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General Forums => The O' Club => Topic started by: DaveBB on January 12, 2017, 04:45:43 PM

Title: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 12, 2017, 04:45:43 PM


Interesting fact: At moderate to high angles of attack, aileron reversal occurs unless the turn is coordinated with rudder.  At low angles of attack, this does not happen.

Also, the aircraft became *more* sensitive to pitch the faster it went.  1 inch of stick movement equaled about 6 G's at 'high Q'.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: morfiend on January 12, 2017, 04:58:27 PM
Paging Puma....Puma.... :devil




    :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Oldman731 on January 12, 2017, 07:57:15 PM
Paging Puma....Puma....


I sent out the bat signal.

- oldman
Title: Re: Flight characteristics of the F-4 Phantom
Post by: EskimoJoe on January 13, 2017, 05:57:37 AM
I'd like to hear from Rhino I believe his name was! I still have a saved story somewhere, he told about his buddy G+13 dropping fuel tanks on Vietnamese boaters during the war  :D
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Shuffler on January 13, 2017, 03:29:03 PM
I'd like to hear from Rhino I believe his name was! I still have a saved story somewhere, he told about his buddy G+13 dropping fuel tanks on Vietnamese boaters during the war  :D

Rino is in our squad. He has been out awhile but doing well. We may see him back soon.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rash on January 13, 2017, 09:58:41 PM
Flight characteristics?  They were fast.  I worked the summer of 1980 at an old bomber plant.  They were overhauling F-4's to send to overseas.  They would be out of sight in about 30 seconds on their test flights.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 13, 2017, 10:04:55 PM
Interesting fact: At moderate to high angles of attack, aileron reversal occurs unless the turn is coordinated with rudder.  At low angles of attack, this does not happen.

Also, the aircraft became *more* sensitive to pitch the faster it went.  1 inch of stick movement equaled about 6 G's at 'high Q'.


Rolling an F-4 with high AOA was purely rudder-based.   Using aileron would result in a departure--big time.    I have been lucky enough to fly with some Rhino drivers over the years.    Boy do they have great stories.

I met a guy once who flew them off the boat.   One day he launched and had the stick just slightly aft of where it should be.  (Guys would lock it in with an elbow against the thigh for the cat shot.)  When fully loaded with three bags the CG was pretty far aft.   Well, he wound up doing a rudder dance in the stall when he went off the end.   After about a mile the airplane accelerated enough for him to climb out. 

The Admiral on the bridge cracked, "I can see the tops of  that guy's boots!"

Call sign from that day on?   Yep. "Boots."
Title: Re: Flight characteristics of the F-4 Phantom
Post by: EskimoJoe on January 14, 2017, 02:44:39 PM
Rino is in our squad. He has been out awhile but doing well. We may see him back soon.

Glad to hear he's doing well. I never got to know him, but always liked to read what he had to say when he chimed in on the forums.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Randall172 on January 14, 2017, 03:05:58 PM
Mig21 is the better plane
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 14, 2017, 04:18:45 PM
Mig21 is the better plane

Not on your life.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 05:29:39 PM
Rolling an F-4 with high AOA was purely rudder-based.   Using aileron would result in a departure--big time.

Which model of the F-4 did you fly?

I flew the "E" for two tours, one of which was an air to air squadron in the ROK.  I'll agree with you about rolling with ailerons in a hard wing F-4.  Use any aileron in high AOPA maneuvering and it was off on Mr. Toad's wild ride.  I flew hard wings in the school house.  They harped on not using ailerons during hard maneuvering.  It was a tough habit to break.  During early sorties in BFM, etc, the autopilot wouldn't allow the stick to move laterally. 

After transitioning to the E model it was different.  The leading edge slats would allow for some judicious use of aileron to wrap it around in a fight. 

After the air to air squadron tour, it was off to a multi role mud beater unit.  On one of my instrument checks whilst doing the obligatory confidence maneuvers, the SEFE requested a high AOA rudder roll.  Coming from the air to air unit, I was well aware that such a maneuver was a HUGE energy burner and waste of potential energy.  So, I did a bit of a lazy one in order to preserve energy.  The SEFE didn't like mine, said here let me show you how it's done.  We transferred control of the jet.  He obtained a bunch of airspeed, pitched up aggressively, and stomped a boot of rudder to it.  We promptly went completely out of control, rolling and tumbling as he expertly applied the out of control bold face procedure to recover the jet back to controlled flight.  He passed control of the jet back to me and we proceeded to successfully complete my instrument check.

In fourteen months of very aggressive air to air sorties in the previous flying assignment, I never put the jet completely out of control or heard of anyone else doing it.  We routinely maneuvered the jet in the phone booth to air speeds that didn't register on the airspeed indicator.  Energy management is all important in air to air maneuvering.  Going on Mr Toads Wild Ride, not so much.

It just goes to demonstrate a common saying in the real world of fighters, hamburger is still hamburger, no matter what you wrap it in.  :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 05:56:46 PM
Mig21 is the better plane

Not better, different. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 06:16:39 PM
There's nothing showing up on my IPAD.  What's in the picture?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 14, 2017, 06:29:46 PM
Did not know that about the E.  I knew the slats, which I believe were a later-run mod, made the airplane turn better but that's good info right there.  I didn't fly it just picked the brains of a lot of guys who did.  Any errors in translation are mine, not theirs.

Most of the guys I knew flew Bs and Js with a few C and D drivers thrown in.  I think one of the Marines I knew flew the S but it was on its way out.  Knew a few of the Weasel guys (including one F driver from the GAF) but the mission was different so I never got much of the scoop on the G (converted E). 

Did you ever run into Ed Rasimus?   Cool dude.  Good writer. 

Any way, thanks for shedding some light on that machine.   Great stuff.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 14, 2017, 06:31:21 PM
There's nothing showing up on my IPAD.  What's in the picture?

Click quote and you'll be able to copy and paste. 

I've repeatedly asked ppl to post the link separately for iPad guys to no avail. 

Edit in: https://www.youtube.com/watch?v=Y6RcTtGfG3E&t=747s

What he says at 10:30 or so is pretty much what every F-4 driver I met said about it.    The adverse yaw discussion is prior to that. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 07:07:43 PM
Thanks!  Got a good look at the video.

Another advantage to E with slats is that when they programmed out the jet would dig in with an additional 1/3 of a G.  With practice that could be used to expidite a turn around the corner.

I recognize Ed's name but, don't remember from where.  I have slept a few times since my Rhino days.

In its time the Rhino was king. Anything that could be physically strapped on could be taken out and dropped on someone's head.  One of my favorite mud beater weapons was the 2,000 pound bomb with a laser guidance package on the nose.  The max carriage limit was 600 knots.  Of course, I always tried to be right at 600 knots at pickle time. 

And then there's the E model and it 6,000 rpm 20mm cannon.  Developed during Vietnam to counter the tighter turning Migs and less than stellar missle pk in turning fights.  The gun was a lot of fun to strafe with and shoot at towed targets.  In the air to air arena, we planned on 3 two second bursts before the 640+ rounds were expended.  On the bombing range  when strafing, we would have friendly bets on who could expend the least amount of rounds per pass.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 14, 2017, 07:15:18 PM
That's funny.  What a hoot that must have been.

Ed flew a tour in 105s then came back for a second one in F-4s.  Wrote a book about each (WHEN THUNDER ROLLED and PALACE COBRA, respectively).   Also helped Christina Olds with her book about Robin, her dad.

Ed in Vietnam. 

(https://heritageflightgeardisplays.files.wordpress.com/2011/01/165709_1499769306605_1605356483_1029856_1227763_n.jpg)

To hear guys tell it he was a fighter pilot's fighter pilot. 

Any way, thanks for sharing.   Good stuff.  :salute

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 07:16:08 PM


I sent out the bat signal.

- oldman

Received!  Thanks Oldman.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 07:18:53 PM
Paging Puma....Puma.... :devil




    :salute

Hey ya Morf!  Yer still using a pager?!  Didn't they stop using those back in the 20th century?  :rofl  :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 07:23:35 PM
That's funny.  What a hoot that must have been.

Ed flew a tour in 105s then came back for a second one in F-4s.  Wrote a book about each (WHEN THUNDER ROLLED and PALACE COBRA, respectively).   Also helped Christina Olds with her book about Robin, her dad.

Ed in Vietnam. 

(https://heritageflightgeardisplays.files.wordpress.com/2011/01/165709_1499769306605_1605356483_1029856_1227763_n.jpg)

To hear guys tell it he was a fighter pilot's fighter pilot. 

Any way, thanks for sharing.   Good stuff.  :salute



That's pretty cool!  He got to fly two of the work horses of their time, and in the same war. 

Always glad to share the good times!   :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: morfiend on January 14, 2017, 07:32:26 PM
Hey ya Morf!  Yer still using a pager?!  Didn't they stop using those back in the 20th century?  :rofl  :salute



  Ya I'm just that old.......... :o  Atleast I didnt say Paging Mike Hunt,that sound special over a PA..... :rofl :rofl :rofl


  Hope all's well with you and yours!



    :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 14, 2017, 07:42:07 PM


  Ya I'm just that old.......... :o  Atleast I didnt say Paging Mike Hunt,that sound special over a PA..... :rofl :rofl :rofl


  Hope all's well with you and yours!



    :salute

I heard that guy get paged in a Las Vegas casino once.

Had a challenging end of last year bu, all is well now.  All the best to you and yours my friend!   :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 14, 2017, 08:16:33 PM
That's pretty cool!  He got to fly two of the work horses of their time, and in the same war. 

Always glad to share the good times!   :salute

Yeah, he magaed to finagle his way back over there in '72 and '73 (F-4E) before they pulled the plug.    He served in all sorts of assignments, retiring in 1987.  You might have crossed paths. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 15, 2017, 09:43:47 AM
Quite possibly.  Flew my last Rhino flight in 87.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 15, 2017, 10:58:34 AM
Quite possibly.  Flew my last Rhino flight in 87.

I always thought the Rhino nickname started with the Marines.   Is that right best you can tell?   I still grin every time I hear or read it.   So appropriate. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 15, 2017, 01:58:33 PM
Pretty much everyone I was around in the AF called it the Rhino at one time or another.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 15, 2017, 04:31:08 PM
The F-4 was undoubtedly the best fighter-bomber of its generation. The Mig-21 might have been a better point interceptor, but Soviet doctrine and substandard weapons let it down. In my opinion the best interceptor and air superiority fighter of that generation was the Mirage III. Amazing aircraft, even today.

https://youtu.be/MQU1f_bgPFE?t=11
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 15, 2017, 06:14:50 PM
The F-4 was undoubtedly the best fighter-bomber of its generation. The Mig-21 might have been a better point interceptor, but Soviet doctrine and substandard weapons let it down. In my opinion the best interceptor and air superiority fighter of that generation was the Mirage III. Amazing aircraft, even today.

https://youtu.be/MQU1f_bgPFE?t=11

Was it ever flight tested against the F-4, F-106, Mig-21, or other similar wing configuration?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 16, 2017, 10:39:00 AM
I doubt it ever fought an F-4 in anything other than training, but against the Mig-21 and other types the Mirage III made many Israeli aces in the 60s and 70s.

(http://www.fighterpilotuniversity.com/files/3213/0618/3272/FUIIIYuvalLapid.jpg)

I count 13 Egyptian kills on that one.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 16, 2017, 11:03:06 AM
https://www.youtube.com/watch?v=XNucO0IZ0EU

Good documentary on the Israeli experience with the Mirage. The animations are cartoonish, but there are some great interviews with Israeli pilots.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 16, 2017, 12:35:15 PM
I doubt it ever fought an F-4 in anything other than training, but against the Mig-21 and other types the Mirage III made many Israeli aces in the 60s and 70s.

(http://www.fighterpilotuniversity.com/files/3213/0618/3272/FUIIIYuvalLapid.jpg)

I count 13 Egyptian kills on that one.

I suspect the Israeli's much better training, proficiency, and well maintained aircraft had a lot to do with it.  It would be interesting to see a nose to nose comparison with equally trained and proficient pilots, and maintained aircraft. 

On an exercise deployment to Cairo West Air Base in the F-4, I had opportunity to fly a combined four ship low level and dry ground attack with the Egyptian Wing Commander.  I graciously and stubbornly agreed to him leading the four ship.  Low level was normally flown at 480 knots in the F-4.  As we followed in a tactical formation the airspeed was anywhere from 250 to 540 knots.  There was never a stabilized airspeed during the 200+ mile low level, not to mention altitude deviations.  There was a whole list of others less glaring debriefable items but, you get the picture.  We also had opportunity to examine the Egyptian Rhinos.  They were in horrible condition, sand blasted from being in the elements, didn't have engine inlet and exhaust covers installed while parked, etc.

Later, at home, a tasker came to send to crews to Cairo West to ferry two Egyptian F-4s to Hill AFB, Utah for PDM.  A couple of our younger crews jumped on the opportunity for all that XC time.  They're first stop out of Cairo was Torrejon, Spain.  Both jets landed with multiple red X write ups (groundable maintenance issues) and were stuck there for two weeks waiting for parts to arrive.  They finally arrive at Hill nearly a month later.  PDM personnel told our guys they hated seeing Egyptian F-4s show up because of the incredibly poor maintenance or lack there of.  Apparently, it was typical for the Egyptian jets to have upwards of 2,000 pounds of sand in the bottom of the engine bays. 

Months later, another tasker came down to ferry two more F-4s from Cairo to Hill.  Our same two crews jumped on the opportunity.  They had the same first stop at Torrejon, multiple red Xs, and were stuck there for a full months because of the severity of maintenance issues.  When our guys finally got home, we asked what that did for a whole month in Torrejon.  They just grinned. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 16, 2017, 01:13:17 PM
Was it ever flight tested against the F-4, F-106, Mig-21, or other similar wing configuration?
The IAF considered the Mirage as the better fighter. The F4s did very well in A2A against mig 21s flown by Syrians, Egyptians and Russians, with gun kills taking a very significant fraction of the kills (about half iirc).
Last F4 kill in the IAF was in 1982 over Lebanon. It managed to steal a kill from under the noses of F15s that were supposed to be escorting it - the pilot spotted lower migs and broke formation without alerting the F15s in order to beat them to the enemy.

The Mirage IIIc is my second historical favorite after the mosquito (also served in the IAF). Their graceful arrowhead silluetes filled the skies of my childhood (converted to Kfirs by that time). All old IAF pilots that I talked to or heard speaking of it liked the Mirage III better than any other fighter they flew.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 16, 2017, 02:20:46 PM
Have you talked with a pilot who had flown both the Mirage and the F-4?  It would be interesting to hear that perspective.  I flew both the F-4 and the F-106.  Curious about the Mirage comparison in relation to the Six and the Rhino.  :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 16, 2017, 02:26:01 PM
Last F4 kill in the IAF was in 1982 over Lebanon. It managed to steal a kill from under the noses of F15s that were supposed to be escorting it - the pilot spotted lower migs and broke formation without alerting the F15s in order to beat them to the enemy.

Not surprising. While flying the F-106 against F-15s we routinely came from deep Six with our radar in standby and popped F-15s with heatseekers.  They rarely, if ever, belly checked. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 16, 2017, 03:13:17 PM
The USN and USMC flew the Kfir (F-21A) as aggressors. There must be some data available on how they compared to Navy and Marine fighters in the 1980s.

(https://upload.wikimedia.org/wikipedia/commons/b/bd/DN-ST-85-08601.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 16, 2017, 05:13:46 PM
Puma, was the pK of the Sparrow, and even Aim9, greatly affected by the ROE during LBJ and pre Nixon and Linebacker2/etc?  I also read recently that the F4U had some of the first NCTR capabilities of the USAF, and could detect the Mig21s IFF and other leaking signals and determine if it was an enemy aircraft or not - long before the whole counting of turbine blades and other Star Trek like NCTR stuff.  One of the military dailies I read recently did this article - http://www.wearethemighty.com/articles/what-made-the-f-4-phantom-ii-the-deadliest-fighter-to-fly-over-vietnam

I read all of Mark Berents books a few times growing up, and as much other F4 Phantom stuff I could find, I can't believe that this week is the first time I've ever heard about the no-ailerons deal with high AoA and using just rudder to roll.  How frequently would you be in such a high AoA position and do this, and at what point could you begin to use the aileron again?

Did you ever use the "pistol" centerline gun pod, even with the E model?  Just would like to know how much more accurate the internal gun was to that thing. 

Regarding the Mig21 vs F4 deal, much of what I've read, even from xSoviet pilots who supposedly flew vs the Phantom in the 21, was that in the vertical and E fighting at certain altitudes, the F4 had a pretty large advantage vs the Mig21, so it wasn't all Mig21 all the time, both had advantages and disadvantages IMO.  Also the F4 had another set of eyes and another brain on board, that's a huge plus.  The Mig21 also was pretty limited compared to the F4 in terms of range, payload, a2g capability, radar, and many other things.  The Mig21 was and still is a great fighter for its cost and purpose though, some of the newer ones that have been upgraded by the Israelis are still pretty potent little fighters, with the newer Archer missiles and HMS, better radar, systems, etc. 

Puma = one thing about the F106 I always wanted to ask, is how to you decide which side of the front cockpit to look out of, with the strut being right through 12 oclock in your front view?  Is it dominant eye, or are there avionics or a HUD set up for one side or the other being optimal?

Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 16, 2017, 07:33:04 PM
Now the flight video simply said to keep the turns coordinated.  It didn't say not to use ailerons. 

One trick the F-4 had to turn inside a Mig-21 was to yaw the aicraft at a high angle of attack and temporarily depart it.  When done right, the nose would slew ahead of the mig and then the F-4 would be in the advantageous position.  This maneuver was taught at Top Gun and is covered in about 3 different books.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 16, 2017, 08:09:49 PM
Puma, was the pK of the Sparrow, and even Aim9, greatly affected by the ROE during LBJ and pre Nixon and Linebacker2/etc?  I also read recently that the F4U had some of the first NCTR capabilities of the USAF, and could detect the Mig21s IFF and other leaking signals and determine if it was an enemy aircraft or not - long before the whole counting of turbine blades and other Star Trek like NCTR stuff.  One of the military dailies I read recently did this article - http://www.wearethemighty.com/articles/what-made-the-f-4-phantom-ii-the-deadliest-fighter-to-fly-over-vietnam

I read all of Mark Berents books a few times growing up, and as much other F4 Phantom stuff I could find, I can't believe that this week is the first time I've ever heard about the no-ailerons deal with high AoA and using just rudder to roll.  How frequently would you be in such a high AoA position and do this, and at what point could you begin to use the aileron again?

Did you ever use the "pistol" centerline gun pod, even with the E model?  Just would like to know how much more accurate the internal gun was to that thing. 

Regarding the Mig21 vs F4 deal, much of what I've read, even from xSoviet pilots who supposedly flew vs the Phantom in the 21, was that in the vertical and E fighting at certain altitudes, the F4 had a pretty large advantage vs the Mig21, so it wasn't all Mig21 all the time, both had advantages and disadvantages IMO.  Also the F4 had another set of eyes and another brain on board, that's a huge plus.  The Mig21 also was pretty limited compared to the F4 in terms of range, payload, a2g capability, radar, and many other things.  The Mig21 was and still is a great fighter for its cost and purpose though, some of the newer ones that have been upgraded by the Israelis are still pretty potent little fighters, with the newer Archer missiles and HMS, better radar, systems, etc. 

Puma = one thing about the F106 I always wanted to ask, is how to you decide which side of the front cockpit to look out of, with the strut being right through 12 oclock in your front view?  Is it dominant eye, or are there avionics or a HUD set up for one side or the other being optimal?



Great questions and discussion, Gman.

One of the huge problems during my active duty time was ROE.  We had some pretty decent BVR missiles but, in order to prevent fratricide, we were restrained to make a VID before shooting, which would often force a turning fight, thus preventing the use of the Sparrow.  This, in turn, would require use of a heater.  The ones we had at the time were constrained to an aft shot.  Follow on versions greatly expanded the lethal envelope.  So, with all of this in mind, a gun was the answer and sometimes the only real option once we got in the phone booth with a better turning opponent.

Using the rudder was essential in the hard wing jets or else, as described earlier.  When I got into the E in Korea, it took some time to unlearn the no aileron mantra and take advantage of it during trips into the phone booth.  I grew up in flying using rudders all the time.  In those high AOA arenas, I tended to use a lot of rudder to get it started and use aileron to sweeten the turn as necessary. Pretty much a balancing act.  Hard to say exactly when to and not to use it.  It was more of a seat of the pants thing once I got somewhat proficient in the jet.

In the F-4 school house I flew the D model.  On some of the range rides I got to strafe with the centerline pod.  It had to be boresighted perfectly to be effective.  To the best of my knowledge, it wasn't used on the E model.  Now, would I have liked to have the centerline gun on the E?  You betcha!  Talk about a gun fighter! Somewhere, I saw a picture of a D with three gun pods mounted.   Arrrggghhhh, what a beast that would be.

During our deployment to Cairo West AB, we flew a sortie against the Egyptian Mig-21s.  In the hazy sand filled skies, the Migs where virtually impossible to see when they were pointed straight at us.  All of the Vietnam vets I was privileged to fly with and against, said not to get in a turning fight with the  Mig-21.  The desirable tactic was to keep the airspeed up, maintain energy, and shoot at long range.....outside the phone booth.

In the Six, the strut was really a non player.  It was not wide enough to be noticeable since it was on the centerline of the pilot's field of view.  From the exterior side view there is a black panel in the windscreen forward of the pilot.  This was a thin plate that prevented light glare from reflecting between the two slanted windscreens and creating a distraction, especially at night.  This was also a non issue since it was also directly on the centerline. Below, the black splitter plate is visible in front of the pilot.  "026" was my assigned jet when station with the 5th Fighter Interceptor Squadron at Minot AFB, ND.  Shown here at Davis Monthan AFB, AZ during a visit to our Air Defense Alert Detachment.

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/2616BEB5-33AB-4B74-B3A5-7B7AAEBDB45E_zpsydwfm76s.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/2616BEB5-33AB-4B74-B3A5-7B7AAEBDB45E_zpsydwfm76s.jpg.html)

Here's a different view of the "splitter".

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/5F4593B1-06C1-47FD-98AB-7E380C7AD3DB_zps0les0dol.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/5F4593B1-06C1-47FD-98AB-7E380C7AD3DB_zps0les0dol.jpg.html)







Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 16, 2017, 08:33:12 PM
When you say "hard wing jet", what does that actually mean?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 16, 2017, 08:42:15 PM
When you say "hard wing jet", what does that actually mean?
Without the leading edge slats of the E model.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 16, 2017, 08:42:34 PM

Puma, thanks for the answer, great stuff.

Question about the Aim4 Falcon missile since you brought up the heaters - was it really THAT bad?  I read that Robin Olds got so P/O'd at them that he flipped out, had the techs rewire his entire wing for Sidewinders instead, all without orders, and then even against orders, and procured Aim9s on his own, since the Aim4 on one flight he had went 0 for 8, with 2/3 of them not guiding or just going dumb.  Did they improve post Vietnam?  I know that the 106 had that Genie nuclear bomber formation buster, but did you have the Aim4 nuclear warhead missile as well, with that "small" .25kt warhead?  Heh, small, 250 tons of explosives in an A2A missile.  What kind of range would the ...not really a blast pattern, but I guess the shockwave/firestorm/whatever that an a2a nuke would have?  Not the range of the missile so much, but the range of its warhead.

How did the F106 fly compared to the F4 in your opinion, did you ever do dissimilar air combat training vs the F15 in the F4 as well?  The deep 6 surprise attacks aside, how did the 106 fare vs the F15 in a VID pass then fight sort of engagement, what were your best options to try and beat the F15 in something like that?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 16, 2017, 09:52:53 PM
Puma, thanks for the answer, great stuff.

Question about the Aim4 Falcon missile since you brought up the heaters - was it really THAT bad?  I read that Robin Olds got so P/O'd at them that he flipped out, had the techs rewire his entire wing for Sidewinders instead, all without orders, and then even against orders, and procured Aim9s on his own, since the Aim4 on one flight he had went 0 for 8, with 2/3 of them not guiding or just going dumb.  Did they improve post Vietnam?  I know that the 106 had that Genie nuclear bomber formation buster, but did you have the Aim4 nuclear warhead missile as well, with that "small" .25kt warhead?  Heh, small, 250 tons of explosives in an A2A missile.  What kind of range would the ...not really a blast pattern, but I guess the shockwave/firestorm/whatever that an a2a nuke would have?  Not the range of the missile so much, but the range of its warhead.

How did the F106 fly compared to the F4 in your opinion, did you ever do dissimilar air combat training vs the F15 in the F4 as well?  The deep 6 surprise attacks aside, how did the 106 fare vs the F15 in a VID pass then fight sort of engagement, what were your best options to try and beat the F15 in something like that?

Thanks Gman. 

Yes the AIM-4s were that bad.  The Six had four, two radar guided and two IR guided.  We referred to them as "Hittiles" vs "Missiles" because they were designed to physically hit the target and activate the contact fuses (white strips) located rearward on the fins.  See the photo below.

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/FCB76FCD-0DA0-4D4A-B867-83FD651ADF50_zpstins7zhh.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/FCB76FCD-0DA0-4D4A-B867-83FD651ADF50_zpstins7zhh.jpg.html)

The PK was so poor that they were fired in pairs off the Six. 

The Genie, on the other hand, had a fantastic PK.  The fire control computer in the Six set a timer that would allow for a safe escape distance for the pilot after launch.  At high altitude, the distance was greater than at low altitude.  At launch, the Genie accelerated near instantaneously to Mach 3 in addition to the Mach speed of the Six.  Most of the time, pilots would try to be around Mach 1.5 or more for launch.

The Eagle was quantum leaps above the F-4 in performance.  Typically when fighting them, the ROE would be heaters and guns with no turns until crossing the other guy's 3/9 line.  It was tough to get the advantage on an Eagle driver, unless he made a big mistake. 

The F-106 could make one good bat turn and then it was nose down in full AB to regain speed. 
Again, if the Eagle driver made a mistake a good Six pilot could get a shot.  Occasionally, Eagle guys that didn't know about the Genie, would brief all up weapons and all aspect.  We would of course launch the Genies on a wall of Eagles and call kill shots.  The next time it would be heaters and guns.  The Eagles had better radar and IR missiles.  So, we had to get creative and present them with the unexpected whenever possible.

Again, "Hamburger is hamburger, no matter what you wrap it in".

Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 17, 2017, 02:12:00 AM
The USN and USMC flew the Kfir (F-21A) as aggressors. There must be some data available on how they compared to Navy and Marine fighters in the 1980s.

(https://upload.wikimedia.org/wikipedia/commons/b/bd/DN-ST-85-08601.jpg)
The Kfir was made with A2G in mind. The more powerful american engine was largely offset by the increase in total weight in comparison to the Mirage IIIc. My guess is that turning permormance suffered. By all accounts it was less pleasant to fly, but had much better A2G capabilities.
In the age of the early F15s and F16s in the IAF, the radar-less Kfir was already obsolete as a fighter.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 02:37:37 AM
Jack Broughton thought the Six would have been ideal for CAP/Escort in Vietnam.   Was he onto something?

He loved that jet.  I read RUPERT RED TWO not that long ago and he extolled the jet--though he lamented the heck out of the horrible ejection seat.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 02:38:22 AM
Have you talked with a pilot who had flown both the Mirage and the F-4?  It would be interesting to hear that perspective.  I flew both the F-4 and the F-106.  Curious about the Mirage comparison in relation to the Six and the Rhino.  :salute

I think the F-4 would take the Mirage overall.   If I had to chose one or the other I would pick the F-4 any day.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 04:49:55 AM
I think the F-4 would take the Mirage overall.   If I had to chose one or the other I would pick the F-4 any day.

The problem with that Vraciu is that in the 1960s you would have seriously deficient missiles and no gun, fighting against an opponent that's both faster and more agile and armed with twin 30 mm revolver cannons (and equally crappy missiles). After 1968 you get a very good gun in the F-4E and better missiles, but then you'd be up against the excellent Shafrir-2 missile, and still those excellent DEFA 30 mm revolver cannons. However, you would be more of an equal with an edge in BVR. As we progress into the 1970s both aircraft are getting obsolete, but in the Yom Kippur war of 1973 the Mirage III and the Nesher (Israeli ground attack variant) shot down 246 aircraft to 26 losses of their own, making the Mirage III the second most successful jet fighter of all time in terms of total kills (second only to the Me 262). In total all versions of the Mirage III have destroyed close to 400 enemy aircraft.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 07:49:51 AM
Oh and today your F-4 would be facing the Kfir C.10 Block 60, with advanced AESA radar, helmet mounted sight, Python and Derby missiles. The Mirage III lives on in the Kfir and will be flying for at least 20 more years. Probably a lot longer.

(http://www.aereo.jor.br/wp-content/uploads//2013/11/kfir.jpg)

(http://aviationweek.com/site-files/aviationweek.com/files/archive/cmsfiles/media/images/fullsize/Defense/Fighters/Kfir-IAI.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 09:41:33 AM
I would still take the Phantom.  Better radar, more persistence, and can carry more weapons. 

The Mirage is a one trick pony. 

The biggest problem the Phantom had was ROE.    The Sparrow had its problems but a lot of that had to do with how our guys were forced to employ it.   Slammer is far better though and a Phantom can conceivably carry six of those. 

And if you're gonna switch the argument away from the Mirage to a Kfir..

The F-4 doesn't have all that new stuff because it's retired.   (Iran doesn't count.)  A modernized F-4 would be even more lethal.   F-4 2000 with equivalent electronics?   Boom.   

Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 10:15:59 AM
The F-4 is not retired as far as I know. It still serves with several modern air forces in secondary roles. Japan, Turkey, Greece at least. Probably more. But you're right a modernized F-4 would be an awesome multi-role fighter-bomber! Imagine the power of the radar you could put in that big nose these days! :x Increased ord carriage and new engines. Would be a poor man's F-15E. Upgraded Kfir is like a poor man's F-16. I wouldn't call it a one trick pony though. Not even the old Mirage III from the 60s. It was a competent attacker as well (why it was later developed into a dedicated ground attack aircraft like the original Kfir).

Pakistani Mirage IIIE and Argentinian Dagger (Israeli made bootleg Mirage III/5) in ground attack configurations:

(https://dl.dropboxusercontent.com/u/26232318/AH/PakistanMirageIII112ROSEdroppingBL-.jpg)

(https://dl.dropboxusercontent.com/u/26232318/AH/MIII5.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 10:21:55 AM
Yeah I guess the EJ sorta counts. 

F-4 never got the upgrades it could have had. 

Mirage one trick pony meaning one bat turn them it's out of energy.  Phantom would eat it alive. 

Even the Kfir with more thrust would be in trouble.  Deltas are notoriously bad for E retention. 

An interesting discussion.   :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 10:46:51 AM
The F-4 is also a delta. Clipped delta with a conventional tail. Same with the Mig-21 for that matter. Most jet fighters are deltas in one configuration or another. The Israelis test flew a captured Mig-21 against its Mirages and found the Mirage superior to the Mig-21 in high speed agility and equal at low speed. Given that the Mig-21 is generally considered more agile than the F-4 I cannot agree with you on the 'one trick pony' characterization. I'm still trying to find some info on how the three Kfir's the USN and USMC leased from Israel performed as aggressors. No luck so far.  :salute

Found more Swiss Mirage IIIS pron though from when they were still in service back in the early 2000s: https://www.youtube.com/watch?v=p1PYiDIIZ1U

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 17, 2017, 11:53:03 AM
The J-35 would most likely been a tough opponent to the Phantom (and mig-21), Armed with the same missiles as the Phantom and 2x 30 mm cannons. J-35 was also both fast and a very good turner.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 17, 2017, 12:04:59 PM
The South Koreans operate one of the largest existing F4 fleets, an entire wing of them still, 70+ are still flying in the ROG air force.

Puma - what kind of blast radius or effective range did those Genie nuclear warheads have?  How far would 1.5kilo tons of kaboom kill a target like a bomber or even a fighter?

Puma alluded to how important the gun was in those days, that due to the limitations of systems, ROE, the missiles of the time - even the "good" ones - that having a good gun was critical.  The Mirage/Kfir/Nesher/etc all had a great gun, the gun cam vids of the IAF blowing up Migs shows that it clearly was very effective.  30mms from an accurate reliable cannon = all kinds of bad news for the opposing Migs of the day.

The Kfir is a good little fighter, but every dog has its day - good and bad.  The Daggers that Argentina flew, which is pretty much an early Kfir, got smoked by Harrier fighters, to the tune of 9 to 0 (plus 2 more from AAA/SAMs).  The cannon there played zero role in how things worked out, the Aim9L was just too good of a weapon by then, plus the Brits were good pilots as well, as were the Argentines (The Dagger wing badly damaged 6 Royal Navy ships).
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 17, 2017, 01:41:17 PM
Yeah I guess the EJ sorta counts. 

F-4 never got the upgrades it could have had. 

Mirage one trick pony meaning one bat turn them it's out of energy.  Phantom would eat it alive. 

Even the Kfir with more thrust would be in trouble.  Deltas are notoriously bad for E retention. 

An interesting discussion.   :salute
The IAF considered the Mirage III the better fighter of the two. The F4 was clearly the better attack plane.
Yiftah Spector was a very colorful and controvertial pilot that flew both and got plenty of kills in both. He was a squadron commander of both. Eventually he also flew F16s and participated in the attack on the Iraqi nuclear plant (a total blunder on his side, but that is just another crazy story of his many).

Some of his exploits are described in this thread, which is in Hebrew and WAY too long for me to translate for you. Scroll down for images from his gun cam of many kills of mig21s in both mirages ans phantoms. The yellow certificates are the official kills confirmations.

https://www.fresh.co.il/vBulletin/showthread.php?t=584112#post4468571

Vraciu, the IAF did operate a modernized Phantoms called "Kurnas 2000" (Hebrew for Sledghamer). It got completely new avionics and a special radar capable of creating images of the ground from very large distances in order to recognize components of the target before attacking. It was still considered an inferior fighter to the other F's, but an excellent attack plane with abilities that F16s and F15s still lacked (no F15E at that time). Kfir was already out of the service by that time. The last two squadrons operated these and closed down around the year 2000.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 02:12:02 PM
The F-4 is also a delta. Clipped delta with a conventional tail. Same with the Mig-21 for that matter. Most jet fighters are deltas in one configuration or another. The Israelis test flew a captured Mig-21 against its Mirages and found the Mirage superior to the Mig-21 in high speed agility and equal at low speed. Given that the Mig-21 is generally considered more agile than the F-4 I cannot agree with you on the 'one trick pony' characterization. I'm still trying to find some info on how the three Kfir's the USN and USMC leased from Israel performed as aggressors. No luck so far.  :salute

Found more Swiss Mirage IIIS pron though from when they were still in service back in the early 2000s: https://www.youtube.com/watch?v=p1PYiDIIZ1U

https://www.youtube.com/watch?v=p1PYiDIIZ1U

Simply untrue.

A true delta has entirely different lift and drag characteristics than what the F-4 has.   Deltas get one turn and they're done.  That's been their nemesis from the day they were invented.   The Eurocanards have tried to mitigate this with varying success via thrust to weight, something neither the Mirage III nor the Kfir C2 have.

The Mig-21 wing is a fraction of the size and has far lower drag than it would if it were a pure/true delta.

Agility does not equate to sustained turn performance.   The F-4 is not a turn fighter, but then again, neither is/are the MiG-21/Mirage III.   That they are able to turn marginally better than a Phantom isn't saying much.   The F-16/F-15/F-18 would tear them up BVR and WVR, IMHO.  (Boy that's a lot of acronyms!)

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 02:13:06 PM
The J-35 would most likely been a tough opponent to the Phantom (and mig-21), Armed with the same missiles as the Phantom and 2x 30 mm cannons. J-35 was also both fast and a very good turner.

If you keep it going downhill.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 02:14:51 PM
The IAF considered the Mirage III the better fighter of the two. The F4 was clearly the better attack plane.
Yiftah Spector was a very colorful and controvertial pilot that flew both and got plenty of kills in both. He was a squadron commander of both. Eventually he also flew F16s and participated in the attack on the Iraqi nuclear plant (a total blunder on his side, but that is just another crazy story of his many).

Some of his exploits are described in this thread, which is in Hebrew and WAY too long for me to translate for you. Scroll down for images from his gun cam of many kills of mig21s in both mirages ans phantoms. The yellow certificates are the official kills confirmations.

https://www.fresh.co.il/vBulletin/showthread.php?t=584112#post4468571

Vraciu, the IAF did operate a modernized Phantoms called "Kurnas 2000" (Hebrew for Sledghamer). It got completely new avionics and a special radar capable of creating images of the ground from very large distances in order to recognize components of the target before attacking. It was still considered an inferior fighter to the other F's, but an excellent attack plane with abilities that F16s and F15s still lacked (no F15E at that time). Kfir was already out of the service by that time. The last two squadrons operated these and closed down around the year 2000.

Depends on the mission.   As a short range interceptor with a small radius and lots of radar help the Mirage is okay.

The "true" F-4 2000 (with the big motors) never went beyond a demonstrator.  It would have been a beast.

Another part of the Kurnass 2000 program was to have been a change of engines. In 1986/87, Bedek fitted first one and then two Pratt & Whitney PW1120 turbofans into an IDF/AF F-4E. The aircraft was initially flown on July 30, 1986 with a single PW1120 in the starboard nacelle only, but was flown with two turbofans from April 24, 1987. This re-engined aircraft was initially intended as a test bed for the IAI Lavi project. A similar sort of conversion had been planned for the abortive Boeing-originated "Super Phantom"--in fact Boeing is rumored to have played a cooperative role in this project, although the true extent of IAI-Boeing collaboration is unknown.

The re-engined Phantom was able to exceed Mach 1 without using afterburner, and had a combat thrust-to-weight 17 percent greater than that of the standard F-4E. The sustained turning rate was 15 percent greater, the climb rate was 36 percent faster, and medium-level acceleration was 27 percent greater. The re-engined Phantom was displayed at the 1987 Paris Air Show wearing the civilian registration 4X-JPA. However, plans to re-engine the entire IDF/AF Phantom fleet with PW1120 turbofans were abandoned due to budgetary constraints. In any case, since most IDF/AF Phantoms were already high-time aircraft, such an ambitious conversion program would not have been very cost effective.


(http://img02.deviantart.net/7410/i/2016/095/f/a/f_4_2000_super_phantom_4x_jpa_1987_paris_air_show_by_fighterman35-d9ndbtv.jpg)


Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 03:03:35 PM
Simply untrue.

Completely true. The F-4 is a tailed delta with cropped delta wings.

(https://dl.dropboxusercontent.com/u/26232318/AH/deltawings.JPG)

(https://upload.wikimedia.org/wikipedia/commons/1/10/McDONNELL_DOUGLAS_F-4_PHANTOM_II.png)

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 03:05:12 PM
Completely true. The F-4 is a tailed delta with cropped delta wings.

(https://dl.dropboxusercontent.com/u/26232318/AH/deltawings.JPG)

(https://upload.wikimedia.org/wikipedia/commons/1/10/McDONNELL_DOUGLAS_F-4_PHANTOM_II.png)

It's NOT a delta.  It's not a cranked arrow.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 03:07:21 PM
Yes it is a delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 03:10:34 PM
F-15 also a cropped delta. F-16 also a cropped delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 03:12:07 PM
Yes it is a delta.

No, it is not.

It isn't even close.  It has about 1/3 less wing area than a delta.  The drag parameters are completely different.   It has a swept trailing edge and a shallow-sweep leading edge.  It is not a delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 03:13:00 PM
F-15 also a cropped delta. F-16 also a cropped delta.


These are not deltas.

Good grief, bruh.

(Some will argue the F-16 is a cropped delta, but that's a stretch, IMHO.   The term in that case is so nebulous as to have no meaning.)

For the purposes of this discussion IRT drag "Delta" = Mirage III, Mirage 2000, Mirage 4000, F-102, F-106, etc., not F-4, F-16, F-15, MiG-21, etc.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 17, 2017, 03:44:09 PM
The "delta" wing class of aircraft are defined by a triangular shaped wing, with the trailing edge being perpendicular, or near perpendicular to the fuselage.  Within the class are slight variants.

Carry on.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 03:55:39 PM
According to NASA these aircraft have cropped delta wings.

F-15
(https://history.nasa.gov/SP-468/p338b.jpg)

F-16
(https://history.nasa.gov/SP-468/p341.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 17, 2017, 04:02:52 PM
It is a delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 04:32:34 PM
It is a delta.

Yeah...  Uh.... NO.

A delta is a triangle.  The F-4 is not a triangle.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 04:35:14 PM
According to NASA these aircraft have cropped delta wings.

F-15
(https://history.nasa.gov/SP-468/p338b.jpg)

F-16
(https://history.nasa.gov/SP-468/p341.jpg)

Quite the stretch.

They're not deltas.   To call that a delta is a prime example of expanding a definition to the point of insanity.

In any case, the drag parameters on a wing like the F-15 is COMPLETLEY different from something like a Mirage III.

An actual delta, not the expanded bogus delta, is a different animal.   They have awful subsonic drag characteristics, especially when maneuvering.   That's why we don't see them any more except for the Eurocanards--and that's still not a true delta.   "They finally perfected the F-106."    LOL
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 04:37:47 PM
The "delta" wing class of aircraft are defined by a triangular shaped wing, with the trailing edge being perpendicular, or near perpendicular to the fuselage.  Within the class are slight variants.

Carry on.

Pretty much.

But for the purposes of this discussion, a true delta is F-102, -106, Mirage III, etc. not these hybrids.   A true delta with their huge wing area and insane leading edge sweep angles are terrible for dogfighters.   They dump TREMENDOUS amounts of energy in hard turns.   You'll get one bite at the apple and then you better get the nose going downhill.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 05:19:12 PM
Yes they are deltas. You may deny it all you want, but I'm going to take NASA's (and everyone else) word over yours.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 05:44:43 PM
Yes they are deltas. You may deny it all you want, but I'm going to take NASA's (and everyone else) word over yours.

Don't care.  Words mean things.  Deltas are triangles.  If it isn't a triangle it isn't a delta.    By this ridiculous "definition" everything is a "modified delta".   

Calling an F-15 or an F-4 wing a delta is like calling a magazine a "clip".   

A delta is an F-106, Mirage III, Mirage 2000, etc., not an F-4 or F-15.

This is a fairly good list--though I haven't studied it in depth.   At a glance just about all of these are deltas.   The A-4 in my view is borderline but close enough.   Note the F-16XL not the F-16.

https://en.wikipedia.org/wiki/List_of_delta-wing_aircraft


NASA itself states clearly: "In fact, the wings of some modern fighter aircraft defy classification as simple delta.... "
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 05:55:46 PM
Yes they are deltas. You may deny it all you want, but I'm going to take NASA's (and everyone else) word over yours.

Oh, and if there is one lesson to be learned by the only Man who ever walked on water...    Going with the crowd is usually the wrong answer.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 17, 2017, 06:17:32 PM
Who? David Copperfield?

When the "crowd" are aerodynamicists at NASA I'll go with them rather than some guy on the internet.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 17, 2017, 06:34:27 PM
The "delta" wing class of aircraft are defined by a triangular shaped wing, with the trailing edge being perpendicular, or near perpendicular to the fuselage.  Within the class are slight variants.

Carry on.

 :aok :rofl well interjectd Skuzzy!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 17, 2017, 06:54:19 PM
See Rule #4
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Shuffler on January 17, 2017, 08:36:17 PM
Who? David Copperfield?

When the "crowd" are aerodynamicists at NASA I'll go with them rather than some guy on the internet.

My brother, who did not finish high school, was invited to talk to the engineers as NASA Houston as a thread expert. Most engineers are nothing more than schooled threats to your safety. Few are worth a damn.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 17, 2017, 10:25:47 PM
The South Koreans operate one of the largest existing F4 fleets, an entire wing of them still, 70+ are still flying in the ROG air force.

Puma - what kind of blast radius or effective range did those Genie nuclear warheads have?  How far would 1.5kilo tons of kaboom kill a target like a bomber or even a fighter?

Puma alluded to how important the gun was in those days, that due to the limitations of systems, ROE, the missiles of the time - even the "good" ones - that having a good gun was critical.  The Mirage/Kfir/Nesher/etc all had a great gun, the gun cam vids of the IAF blowing up Migs shows that it clearly was very effective.  30mms from an accurate reliable cannon = all kinds of bad news for the opposing Migs of the day.

The Kfir is a good little fighter, but every dog has its day - good and bad.  The Daggers that Argentina flew, which is pretty much an early Kfir, got smoked by Harrier fighters, to the tune of 9 to 0 (plus 2 more from AAA/SAMs).  The cannon there played zero role in how things worked out, the Aim9L was just too good of a weapon by then, plus the Brits were good pilots as well, as were the Argentines (The Dagger wing badly damaged 6 Royal Navy ships).


I don't recall if we were ever told what the blast radius was for the Genie.  Just found this article that states a blast radius of 300 M.   http://www.designation-systems.net/dusrm/r-2.html

The goal was to aim at the lead of a Russian bomber formation and let the Blast and EMP take care of the rest.  We were only concerned with getting out of Dodge immediately after launching it.  At high altitude we would do a split S type of maneuver, going to full AB once pointed away from the rocket trajectory.  At low altitude, it was a more or less 135 degree turn away and full burner.

The gun in the F-4E was a deadly weapon.  It was common to pull the piper out in front of the cockpit of an opponent, relax the back pressure on the stick as the trigger was pulled and track the piper across the cockpit.  It wa always good to have the gun option when getting in close, someone making a bad move, and a snapshot suddenly presenting itself.  Nothing like the growl of the gun between my feet and the vibration in the rudder pedals.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 17, 2017, 10:30:02 PM
The F-4 is not retired as far as I know. It still serves with several modern air forces in secondary roles. Japan, Turkey, Greece at least. Probably more. But you're right a modernized F-4 would be an awesome multi-role fighter-bomber! Imagine the power of the radar you could put in that big nose these days! :x Increased ord carriage and new engines. Would be a poor man's F-15E. Upgraded Kfir is like a poor man's F-16. I wouldn't call it a one trick pony though. Not even the old Mirage III from the 60s. It was a competent attacker as well (why it was later developed into a dedicated ground attack aircraft like the original Kfir).

Pakistani Mirage IIIE and Argentinian Dagger (Israeli made bootleg Mirage III/5) in ground attack configurations:

(https://dl.dropboxusercontent.com/u/26232318/AH/PakistanMirageIII112ROSEdroppingBL-.jpg)

(https://dl.dropboxusercontent.com/u/26232318/AH/MIII5.jpg)

The USAF flew and retired its last F-4s at Holloman AFB, NM on 21 December 2016.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 04:49:39 AM
See Rule #4
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 04:51:30 AM
The USAF flew and retired its last F-4s at Holloman AFB, NM on 21 December 2016.

That's pretty awesome. Few aircraft types have served longer.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 04:58:27 AM
NASA itself states clearly: "In fact, the wings of some modern fighter aircraft defy classification as simple delta.... "

And to address your little edit there: NASA defines the F-15's wing as a "modified cropped delta" and the F-16's as a "cropped delta". You're the only person using the word "simple" in this discussion, which I find very appropriate.  :D

https://history.nasa.gov/SP-468/ch11-6.htm
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 09:57:58 AM
And to address your little edit there: NASA defines the F-15's wing as a "modified cropped delta" and the F-16's as a "cropped delta". You're the only person using the word "simplea" in this discussion, which I find very appropriate.  :D

https://history.nasa.gov/SP-468/ch11-6.htm

Little edit?   You mean adding bold?

It's a cropped swept wing.  Extend the outer section of the F-15 wing and you have a 757.

A delta is a triangle. 

Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 09:59:48 AM

Only some guy who has been at this intimately for half a century. 

Ok, I'll bite.  In what capacity?  What fighters have you flown?

More on topic...  I had a civilian sim instructor at Laughlin AFB back in 1995 who went by "Stimpy", and who had the distinction of spinning an F-4 in the break turn, coming up initial.  He punched out.  Some of the other instructors would give him grief over it and he was a bit touchy about the subject so I never got the full story.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 10:02:44 AM
Ok, I'll bite.  In what capacity?  What fighters have you flown?

More on topic...  I had a civilian sim instructor at Laughlin AFB back in 1995 who went by "Stimpy", and who had the distinction of spinning an F-4 in the break turn, coming up initial.  He punched out.  Some of the other instructors would give him grief over it and he was a bit touchy about the subject so I never got the full story.

Flying fighters is irrelevant to knowing what a delta wing is. 

That stated I've flown a few in my day, but I won't claim to be in the same league as Puma. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 18, 2017, 10:08:20 AM
More on topic...  I had a civilian sim instructor at Laughlin AFB back in 1995 who went by "Stimpy", and who had the distinction of spinning an F-4 in the break turn, coming up initial.  He punched out.  Some of the other instructors would give him grief over it and he was a bit touchy about the subject so I never got the full story.

Sounds like he accomplished a tournament level "Mr Toad's Wild Ride" and made the correct decision to jettison the jet.  It's certainly understandable that he would be sensitive about a very embarrassing self initiated event.

One of my squadron mates in the F-106 had a similar event pitching out at Pete Field.  Story had it that the Six started whipping around and he managed to regain control and land safely.  He was met on the ramp by the local very POed Wing King who promptly crawled up the boarding ladder and wanted to know what my friend thought he was doing.  As he was still securing the jet with the after shutdown checklist, he looked the O-6 straight in the eye and told him to get the F off his jet, which the Wing King did.  Supposedly, they had a more civilized discussion on the ramp.  Don't recall what, if anything mx found after the jet was written up.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 10:36:33 AM
Ok, you claim to be an expert including disputing NASA's description of the F-15 and F-16 wings as "modified cropped delta", but give no details.

Going through my own fighter training (I flew the F-15E), the great low speed handling of the mig-21 was attributed to it having a delta wing with a conventional tail.  The F-15 wing was described essentially as a modified delta in order to retain the positive attributes of the delta wing (primarily high lift due to vortices generated near the root and interactions between the wing shoulder, wing root, and vortices effects on the twin vert stabs), without completely giving in to the very high drag you get when you put a pure delta wing up at high AOA.  The tailed delta maintains maneuverability at low speed and high AOA without suffering from the drag losses a pure delta has.  Same decision with the F-16, except of course the relaxed stability was intended to permit the pilot to consistently fly right up to the aero limits without crossing them, giving some margin of performance advantage to other acft with similar aero characteristics but with conventional stability and non-FBW controls. 

In actual flight, the F-15 does have some of the characteristics of a delta wing planform.  Specifically, the enormous increase of drag above a certain AOA without losing all the lift (the very flat stall curve typical of a delta planform), while maintaining controllability and pitch authority, are characteristics of a tailed delta.

The point being that you can dispute the terminology used by established experts in the field (NASA) without establishing your own credibility, because this is the internet of course.  On the other hand, nobody's gonna give you any credit and you come off looking like an argumentative armchair internet warrior.  Actually flying the aircraft and receiving both theoretical and hands-on training on what the actual practical differences mean in real-life goes beyond looking at a simple diagram and proclaiming that it is or is not "pure" anything, and yet you dispute the value of actual hands-on practical experience in the field.

And here's the bottom line - Whether you call it "swept" or "modified cropped delta", planforms like the F-15 maintain many of the flight characteristics of a delta wing while taking advantage of having a conventional tail and other planform modifications to address the drawbacks of a pure tailless delta planform.  The F-15 handles more like a plane with a delta wing than it does like a plane with a swept wing, which is why the experts in the USAF describe it using the word "delta" not "swept".  Because in both theory and practice, the F-15E wing planform has more in common with a delta wing than it does with a swept wing.

Feel free to establish your credentials and explain why your half-century of experience tells you that the modified cropped delta wing of the F-15 is actually "swept".  I'm not proud, I'll listen to your opinion if you have info I don't have or a logical argument more detailed than "it isn't any sort of delta because it isn't an exact triangle".

And back on topic...  A description of the F-4 planform is here:
https://books.google.com/books?id=twH0AwAAQBAJ&pg=PA31&lpg=PA31&dq=WEFT+description+F-4&source=bl&ots=e7J9q7FDli&sig=qYE4y3Ytzz7OYf-oNYHp32aJAQw&hl=en&sa=X&ved=0ahUKEwj0z4-5jMzRAhVL2GMKHSHzAoMQ6AEIJjAE#v=onepage&q=WEFT%20description%20F-4&f=false

(edit - that book has multiple errors throughout, however it still illustrates the usefulness of using certain descriptive terms in an inexact world)

Sorry for the ugly URL, not sure how to shorten that.  If the link doesn't work, the description given is "Low-mounted, swept-back, and semi-delta with square tips.  Positive slanted wing tips.  There is a saw-tooth in leading edges of the wings."  The trailing edge does indeed sweep, however the overall planform and difference between leading and trailing edge sweep is significantly different to the traditional swept wing planform for almost all aircraft that went before the F-4 phantom, which shows that aerodynamic thinking at the time was leaning in the direction of the efficiencies and benefits of the tailed-delta planform on fighter aircraft and away from the early swept designs that the US had been using with early aircraft such as the F-86 and many of the century series aircraft.  The F-15, F-16, and others are clear examples that the delta planform, modified to address some of the drawbacks to a pure delta wing, had benefits that were very apparent to designers at the time.

By the way, that book I linked in the url uses the word "delta" in its wing description of the F-16, F-18, and F-15.  The F-15 is called "semi-delta with angular, blunt tips."

Lots of experts, lots of use of the word "delta".  Maybe in actual use, a "delta" wing planform description isn't only a pure geometrical triangle when drawn on a line diagram.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 10:44:46 AM
A delta is a triangle.

These are all triangles Vraciu.

(http://www.formsbirds.com/formimg/triangles-calculation-worksheets/17270/calculate-the-area-and-perimeter-of-various-triangles-rotated-triangles-a-l1.png)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 10:51:51 AM
Only #6 is a triangle.  The rest are swept or tapered 3-sided polygons.   :devil
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 11:07:49 AM
 :rofl
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 18, 2017, 11:17:09 AM
Eagl, did the conformals on the E have any affect on handling characteristics other than drag?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 18, 2017, 11:18:05 AM
who cares if a wing is labeled "delta" or not?
I couldnt care less.
OK, I could... so now following the above thread I care even less then before.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 18, 2017, 11:45:43 AM
I like the F-5 as well, maybe not an uber fighter but a really good looking plane. The sleek lines and the delta wing makes the proportions just right.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 11:48:18 AM
Eagl, did the conformals on the E have any affect on handling characteristics other than drag?

The conformal tanks increased pitch authority so we could get a couple more degrees AOA if we wanted it.  High drag up at that high AOA made it of limited usefulness except maybe when forced into in a knife fight with a superior performing fighter, in which case the extra pitch authority could be used to try to get a first-shot advantage.  That could force the other plane to defend instead of pressing its offensive advantage.  That could permit a first shot and a separation attempt in some circumstances.  However, if the shot missed or the other pilot didn't flinch, it would leave the F-15E very slow and vulnerable.

The flight control stability rules also had to be modified slightly from the F-15C/D since the CFTs and nav/targeting pods made the F-15E slightly more prone to spins.  The modifications made the plane a touch less agile in some areas, but you could still fool the stability system to get it to flip-flop around. Again, this was of limited utility due to lower thrust/weight and extra drag compared to other fighters but could sometimes be useful in a last-ditch scenario or if flying against clearly inferior opponent.

Also, the CFTs and other added airframe weight increased pitch momentum and inertia.  So while pitch authority was greater, pitch rate and response was slightly slower sometimes.  Again, there were ways to exploit this and make the plane do some unexpected things, but the tactical usefulness of this is limited.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 11:55:55 AM
I like the F-5 as well, maybe not an uber fighter but a really good looking plane. The sleek lines and the delta wing makes the proportions just right.

It's not DELTA its TAPERED!  Get it right!

 :x
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 12:22:53 PM
These are all triangles Vraciu.

(http://www.formsbirds.com/formimg/triangles-calculation-worksheets/17270/calculate-the-area-and-perimeter-of-various-triangles-rotated-triangles-a-l1.png)

Yep.  And the F-4 and F-15 wings are not.   Thank you for making my point--again.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 12:56:21 PM
A delta wing is a triangle but not necessarily a right triangle.  The trailing edge can have some sweep and the tips can be clipped.  An ogival delta can even have a curved leading edge which means it isn't even a triangle at all (like the concorde).

Vraciu you're beating a really small drum here.  Once again, where exactly is your claimed half-century of expertise in this area that makes you so certain that the only possible planform that can conceivably be called a delta wing is a right triangle with pointy wingtips?

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 01:06:43 PM
A delta wing is a triangle but not necessarily a right triangle.  The trailing edge can have some sweep and the tips can be clipped.  An ogival delta can even have a curved leading edge which means it isn't even a triangle at all (like the concorde).

Vraciu you're beating a really small drum here.  Once again, where exactly is your claimed half-century of expertise in this area that makes you so certain that the only possible planform that can conceivably be called a delta wing is a right triangle with pointy wingtips?

I love how you all use terms like MODIFIED, CLIPPED, CRANKED, ad nauseum. 

It's either a triangle or its not. 

I have repeatedly stated that deltas have poor drag characteristics.   You have proven my point over and over by restating this very thing as to why these wings are modified.   So they're either deltas or they're not.  If they're modified from something they're no longer that something and all the pretzel twisting on earth doesn't change that. 

By this insane reasoning, any wing is a modified delta.    After all, you are saying a delta (triangle) can have more than three sides.  My jet on the ramp right now must be a modified, tapered, extended, cropped delta.    :O

So, it's a delta (102, Mirage) or it isn't (F-15, F-4).   

At least the ogival can approximate three sides.    It's basically a triangle.   Not a polygon. 

I'm not getting into a sizing contest with you either.  It's not important.   Words have meaning.  Eager isn't anxious and Eagle wings are not deltas. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 18, 2017, 01:18:21 PM
Just as an aside, the drag characteristics, of any given wing shape, has nothing to do with it being a "delta" configuration, or not.  The definition of the "delta" design has never included any statement as to its flight characteristics.

Carry on.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 18, 2017, 01:28:50 PM
Oh, and all the aviation articles I can find about the F15 suggests it is a modified cropped delta shape with a leading-edge sweepback angle of 45°.  Does that sound about right eagl?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 18, 2017, 01:47:01 PM
Clearly not a triangle so no delta:
(https://upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Saab_AJS-37_Viggen_37098_52_(SE-DXN)_(9256079273).jpg/300px-Saab_AJS-37_Viggen_37098_52_(SE-DXN)_(9256079273).jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 02:05:58 PM
 :rofl

(That's one of my favorite Cold War planes  :aok)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 18, 2017, 03:39:48 PM
Oh, and all the aviation articles I can find about the F15 suggests it is a modified cropped delta shape with a leading-edge sweepback angle of 45°.  Does that sound about right eagl?

I've seen it referred to as "trapezoidal" also.

My mistake, the article was talking about the X-15, not F-15.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 03:39:52 PM
Just as an aside, the drag characteristics, of any given wing shape, has nothing to do with it being a "delta" configuration, or not.  The definition of the "delta" design has never included any statement as to its flight characteristics.

Carry on.

Not true.  Pure delta wings are notorious for high drag particularly at lower speeds.   This is why they're not used. 

The F-15 has traditionally been referred to as a cropped swept back wing, revisionist history aside. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: zxrex on January 18, 2017, 03:44:47 PM
Loved the F4.  Last time I saw one fly was at the Battle Creek, MI airshow a few years ago.  They had a F4 and F22 doing a demo, was pretty cool.  Don't think it was the same year, but the F15E demo was really impressive. He did a 360 around crowd at low alt with burners lit.  That thing was shaking the ground with vapor streaming off the wings all the way around.  I'm sure he was light.  He didn't seem to have much of a slowing down problem. :rock
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 03:45:13 PM
I've seen it referred to as "trapezoidal" also.

My mistake, the article was talking about the X-15, not F-15.

More accurate than saying delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 18, 2017, 03:47:40 PM
Every book I can put my hands on defines "delta" wing as a shape with no mention of flight characteristics.  I am talking about the definition.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 03:49:48 PM
Every book I can put my hands on defines "delta" wing as a shape with no mention of flight characteristics.  I am talking about the definition.

I see.  Yes that would be accurate.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 04:15:32 PM
Not true.  Pure delta wings are notorious for high drag particularly at lower speeds.   This is why they're not used.

What is a "pure delta" and when did anyone but you use that definition in this thread? And what do you mean "they're not used?"



(http://www.adl.gatech.edu/f15tail/6modelstested.JPG)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Shuffler on January 18, 2017, 04:28:05 PM
I make pure delta wing paper planes. They have blue lines... is that still a delta?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 18, 2017, 04:37:01 PM
The conformal tanks increased pitch authority so we could get a couple more degrees AOA if we wanted it.  High drag up at that high AOA made it of limited usefulness except maybe when forced into in a knife fight with a superior performing fighter, in which case the extra pitch authority could be used to try to get a first-shot advantage.  That could force the other plane to defend instead of pressing its offensive advantage.  That could permit a first shot and a separation attempt in some circumstances.  However, if the shot missed or the other pilot didn't flinch, it would leave the F-15E very slow and vulnerable.

The flight control stability rules also had to be modified slightly from the F-15C/D since the CFTs and nav/targeting pods made the F-15E slightly more prone to spins.  The modifications made the plane a touch less agile in some areas, but you could still fool the stability system to get it to flip-flop around. Again, this was of limited utility due to lower thrust/weight and extra drag compared to other fighters but could sometimes be useful in a last-ditch scenario or if flying against clearly inferior opponent.

Also, the CFTs and other added airframe weight increased pitch momentum and inertia.  So while pitch authority was greater, pitch rate and response was slightly slower sometimes.  Again, there were ways to exploit this and make the plane do some unexpected things, but the tactical usefulness of this is limited.



Thanks!  Always wondered what the effect was re the conformals.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 18, 2017, 04:40:48 PM
For what it's worth, in the 106 community, it was commonly referred to as the "Six" or "Iron Triangle".  I guess "Iron Delta" just didn't have the same ring to it.  Did it make a difference calling it a delta or a triangle?  Not a bit.  It still burner climbed to 45,000 feet and sped along like a scalded ape!

Don't recall anyone ever going at it over the popular vs actual description of the wing shape.  :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 18, 2017, 05:16:12 PM
The 106 was such a beautiful plane. I wish there was more info on how it stacked up against its contemporaries. Unfortunately it being mostly limited to the continental US and serving in a strict interceptor role makes that difficult.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 18, 2017, 06:45:36 PM
Yes it was.  The Lamborghini of the fighter world.  The F-4, more like the Hummer. :rofl
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 18, 2017, 10:14:56 PM
The "Iron Triangle"

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/9CD2E4D9-3C2D-471A-9D1E-843018BAF117_zpsuacz8yvi.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/9CD2E4D9-3C2D-471A-9D1E-843018BAF117_zpsuacz8yvi.jpg.html)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 11:02:37 PM
Oh, and all the aviation articles I can find about the F15 suggests it is a modified cropped delta shape with a leading-edge sweepback angle of 45°.  Does that sound about right eagl?

Yes.  And the flight characteristics do indeed support the broad general characterization of the wing planform shape as a modified cropped delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 11:05:13 PM
Not true.  Pure delta wings are notorious for high drag particularly at lower speeds.   This is why they're not used. 

"not used" = false.  Eurofighter, Rafale, Gripen all use a delta wing plus canard.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 11:13:36 PM
"not used" = false.  Eurofighter, Rafale, Gripen all use a delta wing plus canard.


I have repeatedly stated "with the exception of the eurocanards".

And these are still not true deltas, but they're as close as we will see because of the inherent disadvantages of deltas overall.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 11:16:17 PM
Yes.  And the flight characteristics do indeed support the broad general characterization of the wing planform shape as a modified cropped delta.


Incorrect.   It is a cropped swept wing--by your logic a 757 is a modified cropped delta.


In any case, it is not a delta.   Period.   Read your own words.
 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 11:17:35 PM
Every book I can put my hands on defines "delta" wing as a shape with no mention of flight characteristics.  I am talking about the definition.

My aero engineering class at the USAF academy, and later on courses during fighter pilot training, all contained specific behavioral characteristics that were generally common or similar among pretty much all delta wing designs.  The term "delta" wing was applied to any wing ROUGHLY triangular in shape, although a great number of variations such as cranked arrow, ogive delta, clipped delta, etc. were accepted and considered as "delta wings" in general because their performance characteristics were so similar.

Specifically noteworthy were descriptions of how in all of the delta shape variations, the lift generation would SMOOTHLY transition from traditional "airfoil" lift/drag profiles to a profile driven by strong vortices generated from the wing root as AOA increased.  While this significantly increased drag, it also dramatically flattened the lift curve, nearly eliminating traditional stalling behavior.  While the drag increase could be partially mitigated by features such as a drooped leading edge, combining a delta wing with a traditional horizontal stabilator or canards (lifting, fixed, or free-floating) provides a huge increase in performance and maneuverability.  Still, even with a tail or canard, all "delta" style wings (modified, cranked, clipped, whatever) will feature a flat lift curve due to the vortices generated at the wing root.

This is a direct contrast to "swept" wings, which have completely different characteristics at high AOA such as a tendency to tip stall and a much more abrupt "stall" drop-off in lift as AOA is increased.

As for the utterly ignorant statement that a delta wing isn't useful because it has too much drag, take a good look at the B-58 hustler...  That's one FAST airplane created with low drag in mind, very well designed for its purpose, and proof positive that a delta wing is sometimes the best (or only) way to achieve performance requirements.  That's just as true today as it was 50 years ago.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 11:19:04 PM
They have low drag in cruise.   They have high drag in maneuver and when slow. 

Yello?  Yello?   Is this thing on?   *tap* *tap* *tap*  :old:

The Concorde and Hustler were designed for missions that delta wings are good for--high speed level flight.   They're not dogfighters and they chew up runway like there is no tomorrow.   

Deltas give you one good hard turn and that's it because they are draggy as hell.    They're not optimal for sustained maneuvering compared to other designs.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 18, 2017, 11:48:02 PM
They have low drag in cruise.   They have high drag in maneuver and when slow. 

You don't even make any sense.  What is "in maneuver" and "when slow", in aerodynamic terms?  I thought you had half a century in this field and would know the right words.  Do you even realize that "at high AOA", regardless of "maneuvering" or "speed", is the specific condition where a delta wing's drag really increases?

No of course you don't know such a basic aerodynamic principle, because you're also either ignorant of, or deliberately ignoring, the fact that accompanying the drag increase is a consistently high and flat lift curve that makes a delta wing planform desirable in an aircraft with a high thrust-weight ratio or a need to go FAST yet still slow down enough to land on a reasonably sized runway (concord, B-58, SR-71, etc).

This is what is so amazing about the F-18 design - the leading edge extension strakes generate vortices (and drag) at high AOA, far more so than would otherwise be generated by the rest of the wing with its relatively low leading edge sweep.  The comparatively low leading edge sweep gives higher lift at lower AOA and at lower speed which permits carrier landings, yet the AOA can be spiked to previously unheard of angles in combat to permit weapons employment advantages.  That takes advantage of a general characteristic of a delta wing planform, and that's why the delta wing is still used today in modified forms and configurations.

You keep blathering about how "my logic" would consider a 747 wing to be a modified delta... except that anyone with any education in the field of aerodynamics, or any real experience flying high performance aircraft with various wing shapes, can look at it and see that the basic shape is swept and anticipate likely performance properties and handling behaviors.  Not only that, any investigation into the handling characteristics of a 747 (or any modern airliner) would make it clear that the wing actually behaves aerodynamically like a swept wing, not a delta wing.

Anyone with the background and experience can see and understand this, just by looking at it.  Look at an F-15 wing planform and anyone with aero experience can instantly predict that the lift/drag curves and likely handling characteristics most closely resemble those of a delta wing.  Knowledge of the airfoil and leading edge droop in the F-15 wing would make it even more clear that the wing's aero characteristics are generally that of a delta wing, not a traditional swept wing.  A swept wing does not generally benefit from a permanent fixed leading edge droop while a delta wing does, and guess what - the leading edge of the F-15 has a fixed drooping leading edge airfoil shape.

While arguing this has been stupidly entertaining, there is one final point.  By your argument, there never has been and never will be a real "delta" wing on a real aircraft, because no aircraft ever produced had a true triangle shape with a tip that ended in a geometrically precise point.  They all have at least a small "clipped" wingtip due to the physical characteristics of the materials used to construct the aircraft.  For that matter, simple manufacturing variations would ensure that the trailing edge of the wing is never precisely 90 degrees from the aircraft's centerline.  There will always be a variation, hence by your definition, there will never be a true delta winged aircraft.

You can't even get the basic aero terminology right, your overly narrow definition of a "delta" wing is physically impossible to manufacture, and you are ignoring the fact that the aerodynamic properties inherent in a "delta" wing are the product of airflow over a wing planform that is roughly a right triangle but not necessarily a precisely true or simple right triangle.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 18, 2017, 11:50:32 PM
Thanks for repeating so many points I've already made.   You know precisely what I mean.  Being obtuse when discussing delta wings...  Ironic.

...

I happen to be a huge Hornet fan, by the way, but ask anyone who knows anything about it and they'll tell you there's nothing worse than being out of energy in a fight with no choice but to go downhill RIGHT NOW.  It's draggy, underpowered, and mostly outclassed.   You pay a price for the LERX layout.   (Just like a delta, you get tremendous drag especially when slow or loaded up or high AOA, whatever term you care to use--you know what is meant.  That vortex lift isn't free.)  They don't call it the Super Slow Hornet for nothing.

...

Lots of airplanes have permanent droops and they're not all deltas. 

  :eek:

"In fact, the wings of some modern fighter aircraft defy classification as simple delta or swept wings since they have some of the geometric characteristics of both."   

- HISTORY.NASA.GOV

 :eek: :eek:

Whatever.    I'm not gonna be insulted by someone who doesn't bother to read what I've said. 

Have fun.  I'm out. 

Apologies to the OP for my part in the thread hijack.

Thanks Puma for the great info you shared and the classy manner with which you shared it   I will take your advice about that electric fence.  Lol  :salute

Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 19, 2017, 03:50:42 AM
See Rule #4
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 19, 2017, 05:48:28 AM
The poor low-speed high-alpha characteristics of a "pure" delta...  :rofl




https://www.youtube.com/watch?v=rCzy_BI9QnU
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 19, 2017, 06:43:19 AM
My aero engineering class at the USAF academy, and later on courses during fighter pilot training, all contained specific behavioral characteristics that were generally common or similar among pretty much all delta wing designs.  The term "delta" wing was applied to any wing ROUGHLY triangular in shape, although a great number of variations such as cranked arrow, ogive delta, clipped delta, etc. were accepted and considered as "delta wings" in general because their performance characteristics were so similar.

Specifically noteworthy were descriptions of how in all of the delta shape variations, the lift generation would SMOOTHLY transition from traditional "airfoil" lift/drag profiles to a profile driven by strong vortices generated from the wing root as AOA increased.  While this significantly increased drag, it also dramatically flattened the lift curve, nearly eliminating traditional stalling behavior.  While the drag increase could be partially mitigated by features such as a drooped leading edge, combining a delta wing with a traditional horizontal stabilator or canards (lifting, fixed, or free-floating) provides a huge increase in performance and maneuverability.  Still, even with a tail or canard, all "delta" style wings (modified, cranked, clipped, whatever) will feature a flat lift curve due to the vortices generated at the wing root.

This is a direct contrast to "swept" wings, which have completely different characteristics at high AOA such as a tendency to tip stall and a much more abrupt "stall" drop-off in lift as AOA is increased.

As for the utterly ignorant statement that a delta wing isn't useful because it has too much drag, take a good look at the B-58 hustler...  That's one FAST airplane created with low drag in mind, very well designed for its purpose, and proof positive that a delta wing is sometimes the best (or only) way to achieve performance requirements.  That's just as true today as it was 50 years ago.

Maybe it was just my own interpretation, but I always felt like the flight characteristics were a manifestation of the design, while the definition of the design was described by the physical attributes.  At least, that is how I always read it.

In a gross analogy, it is like claiming a DOHC engine would be defined by how much more efficient it is over a single, in-block, cam engine.  While true, it is not the actual definition of DOHC, it is the manifestation of the design.

Correct me on this eagl, as I am not an expert in this area, but I do endeavor to be accurate. Thanks.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: rabbidrabbit on January 19, 2017, 07:54:19 AM
It's good to finally see a spirited exchange here remain unlocked.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 19, 2017, 08:18:18 AM
....and thus endeth the discussion on F-4 flight characteristics.   :salute

Then again, there's a whole other discussion about the wide range of "stuff" the Rhino could carry.

Vraciu, you're welcome!  Always good to use a tool for its intended purpose.  :rofl

Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 19, 2017, 08:48:32 AM
Payload capacity was the one characteristic where the F-4 truly shined brighter than all others. As a bomb truck it has few rivals.

(https://s-media-cache-ak0.pinimg.com/564x/e2/e1/ab/e2e1ab427f0c02f0b13a32b4ea151cf9.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 19, 2017, 08:59:20 AM
Come to think of it the F-4 was the first of the jet "heavy fighters" wasn't it. The first member of an exclusive club that includes the F-14, F-15, F-22, Tornado, Mig-25/31, Su-15 and Su-27 (+variants). All other planes in that size category are bombers or perform other missions than air superiority.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 19, 2017, 09:18:08 AM
Come to think of it the F-4 was the first of the jet "heavy fighters" wasn't it. The first member of an exclusive club that includes the F-14, F-15, F-22, Tornado, Mig-25/31, Su-15 and Su-27 (+variants). All other planes in that size category are bombers or perform other missions than air superiority.
Yes, heavy and beast come to mind.  Pretty much anything that could physically be strapped under the jet could be flown out and dropped on someone's head.  One of my favorites was the GBU-10 2,000 lb bomb. Delivered using the Pave Spike system carried on the F-4.  A very accurate and powerful weapon.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 19, 2017, 11:56:30 AM
Since this thread has become a general aviation/delta/other planes deal, I wonder what you both (Puma/Eagl) can say about the B58 Huslter that Eagl brought up.  Went and read more about it last night, really interesting bomber.  Fast - mach 2 at alt, but the climb rate is what caught my eye, a couple sources claimed with a light weapons load it could do nearly 50k/m from the deck on up with its 4 engines on max cook. 

I really was interested in the tail defenses, I've often wondered why they were removed from the B52 when they did get kills on Mig21s in Vietnam.  These days with all the ECM stuff going on, I often wonder if our bombers would be most vulnerable to gun kills from fighters, and wouldn't having at least some sort of gun defenses be a very good thing?  (This thread has lots of "gun" discussion so I figure this fits in too).  The gun on the B58 was radar guided, the 3rd crewman just had to designate the target and fire the rotary 20mm.  Really interesting I found, and again, wonder why the non-stealth bombers like the B52 deleted the tail defenses.

The B58 also had one of the first squeakin betties.  (edit - Squekin...seriously?!?!).  The Hustler was flying only 12 years after the B29 went in service, pretty incredible.  All sources say that its high alt/speed capability was made irrelevant by the SA2 and other defenses, but that when it switched to a low alt/high speed penetrator, it did well.  Any ideas on how fast it was on the deck Puma/Eagl?

Can anything be learned from the B58 regarding the USAF's current bomber fleet?  The B21 is coming soon, and the B2 is still being used, front page news today is 2 of the B2 fleet just dropped 100+ bombs in one sortie - must be the small diameter bomb I think, maybe the GBU38 500lb JDAM,  in order to have 50+ on board, but that's a guess.

Quote
After looking at various options including rear-firing missiles and twin 30mm cannons, the General Electric T171 (first designation of the M61 Vulcan cannon) 20mm rotary cannon was selected in early 1954. The tail gun of the B-58 boasted many firsts for an aircraft defensive gun including the first fully automatic defensive gun fire control system for a production aircraft, the first aircraft gun unit to use a 3-axis inertially-stabilized platform to increase the gun's accuracy, the first aircraft gun to use a self-contained environmental control unit for the gun and ammunition storage, first aircraft gun to use a solid state analog fire control computer for fire control and the first to use a hinged turret arrangement for maintenance work.

(http://4.bp.blogspot.com/_8DAL7gPYBiM/SuewiJ1OACI/AAAAAAAAAEY/y0AyPotwOLQ/s1600/HustlerTail.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 19, 2017, 03:51:10 PM
Gman, while on active duty I met a Colonel who flew the Hustler.  He said it would do high Mach (upwards of Mach 2 as I recall) all day long at low altitude.  He also mentioned that if it lost an engine at high Mach, the resulting yaw would be catastrophic.  When everything was working correctly, it was a joy to fly, according to him.

The tail gun in the Buff was supposed to be pretty lethal.  While in the F-106, we would work with the local Buffarillo squadrons.  We would run intercepts on them, convert to the stern, and work on slashing gun shots while staying out of their lethal 60 degree out to 6,000ft cone of death.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 19, 2017, 04:03:53 PM
Due to its honeycomb structure, the B-58 was subject to corrosion.  Moisture simply couldn't escape from some of the areas, creating many corrosion cells.  Also, it was almost strictly a nuclear bomber.  The weird aircraft/pod configuration didn't lend itself to carrying conventional weapons.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Shuffler on January 19, 2017, 04:17:28 PM
Glad this thread was posted up. Always interesting reading.

Thanks to you fellas contributing!!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: puller on January 19, 2017, 04:52:36 PM
I too went and read about the B58...I really thought that the ejection pods it had were really cool...wish I could post the pic of them...really neat
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 19, 2017, 07:14:37 PM
I guess the Mirage 2000 doesn't count either.  :rolleyes:  As "pure" a delta wing you can get.



For the purposes of this discussion IRT drag "Delta" = Mirage III, Mirage 2000, Mirage 4000, F-102, F-106, etc., not F-4, F-16, F-15, MiG-21, etc.


Title: Re: Flight characteristics of the F-4 Phantom
Post by: Oldman731 on January 19, 2017, 09:29:45 PM
Gman, while on active duty I met a Colonel who flew the Hustler.  He said it would do high Mach (upwards of Mach 2 as I recall) all day long at low altitude.  He also mentioned that if it lost an engine at high Mach, the resulting yaw would be catastrophic.  When everything was working correctly, it was a joy to fly, according to him.


Summer of 1972 I was AFROTC at Plattsburgh AFB (New York).  They had a wing of KC135s and another of FB-111s.  At the time, the FB-111s were fairly new, and fairly rare (most of those loser planes went to TAC).  Seemed to me that about 1/3 of the 111 pilots were ex-B52 people, and the remainder ex-58s.  I would ask the 58 people, "So how does this plane compare to your old B-58?"  They would put on the Official Face and say, "Well, of course the 111 is far more advanced, with terrain-following radar and digital avionics and variable-sweep wings."  I would just look at them, and they would relax and say things like, "Of course, there's nothing like the push you used to get on takeoff with the 58.  That was something to remember!"  One of them said that on scramble from the alert shack, they would still be starting some of their engines during the takeoff roll.  Even the wing exec, who was obligated to host a couple of us for one meal, got that faraway look in his eyes when speaking of the B-58.  I had no doubt in my mind that they missed that plane.

- oldman
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 19, 2017, 09:36:23 PM
By the way, the Six also had a curved leading edge.

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/3C4A5095-5979-403B-9801-F07DEB12273F_zpsvn4pn9qz.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/3C4A5095-5979-403B-9801-F07DEB12273F_zpsvn4pn9qz.jpg.html)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 20, 2017, 12:00:21 AM
Skuzzy,

It's semantics at this point, but the broad approach I was taught dealt with wing design almost like a series of families or categories of wing shapes.  Straight unswept without taper would in general behave like *this*, swept would behave like *this*, add taper to the chord and *this* happens, thin the airfoil out towards the tip to address *this* performance drawback which results in *this* other thing...  A "delta" wing was merely a roughly triangular shape that would have basic characteristics that were similar and predictable to all "delta" shapes.  So you could either pick a generic planform based on the performance characteristics you wanted when you were designing a plane, or if you had an existing design you were trying to test or characterize, you could predict various performance and behavior modes just by looking at the shape and airfoil, and make some assumptions as you started collecting hard data to refine the predictive models, come up with stability augmentation laws, or whatever.

I can look at the planform of any opponent's fighter, and just from looking at the planform view make a good guess as to how I want to fight it, what its good at, and what it sucks at.  Without anyone telling me, I can look at a mirage 2000 and know it has one awesome bat-turn that would be deadly at the merge, and it can probably cruise very fast and efficiently with a fairly heavy loadout.  But in a sustained turn I can probably out rate it unless I get way too slow as well.  The mig-21 has great low speed handling so don't try to win a flat scissors against one, because he can roll faster than I can at low speeds and he can probably get some good AOA to point the nose even when slow, but he'll be bleeding speed fast if he keeps pulling.

Just look at the differences between a spitfire with elliptical wingtips and a cropped-tip spitty.  The elliptical planform has very low drag and good handling up to the stall, but the stall almost immediately makes the ailerons useless because of where the flow separation begins on that kind of wing.  Crop the tips and you get a completely different (and predictable) set of behaviors in various flight regimes.  Adding winglets is another way you can have a very wide variety of wingtip shapes, but they all do things like change the lift distribution across the span and increase loading on the outboard wing, in addition to reducing wingtip vortice drag.  The exact shape doesn't matter when considering what ought to happen, you get certain performance changes almost no matter what the actual winglet looks like.  The shape DOES matter when you need to know how much things have changed, but only in terms of how much each aero characteristic is changed by the presence or absence of the wingtip device.

And that's because wing shapes can be understood in terms of very broadly defined categories, and you can make a good guess as to how it'll fly in general.  Knowing this, you can even predict what happens when the general shape is modified in some way.  Like putting swept and cropped wingtips on an F-15 for the area that has the ailerons, you get some behaviors of a delta wing but the wing will have some of the airflow characteristics of a swept wing over just the ailerons and wingtips.  They started with a delta wing shape, and modified it to achieve certain behaviors.

Does that make any sense or are we talking in circles still?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 20, 2017, 12:06:54 AM
Regarding the B-58 performance down low...  Remembering when it was originally designed and the materials available at the time, my suspicion is that low altitude speed would be significantly limited by airframe heating.  The F-111 had a simple temperature overheat light on the panel.  You could take the F-111 about as fast as you wanted down low, until that light came on. Then you slowed down or risked structural damage/failure. 

I don't know for sure and don't know any B-58 pilots I could ask, but I suspect that they had the same issue to deal with during sprints.

And it isn't just low altitude... I know an F-15E driver who took a clean F-15E up past mach 2 out by Nellis.  He was pretty high, at least in the high 30k+ or 40k+ region, and he took it up to around 2.2 if I recall correctly.  When he pulled the throttles back to slow back down, the engine controllers flipped him the bird and the motors remained in full burner.  The engine controllers probably knew that the motor was only marginally stable at that point and any reduction in thrust would cause a damaging compressor stall.  He had to fly a series of descending S-turns still doing well over mach 2 in full afterburner until he got low enough for the engine controllers to throttle the motors back down.  Heading back to base, he noticed that he couldn't receive the usual navaid stations, and had to get vectors for his approach to the field.  After landing, he discovered that he had melted a couple antennas completely off the plane and deformed other bits and pieces that stuck out from the airframe.

So... my *guess* is that the B-58 had some airframe heating limitations down low, but I can't verify that.


Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 20, 2017, 12:16:41 AM
Back on topic... I read somewhere that the F-4 Phantom wing had no "max" speed. The wing shape and airfoil was good to well beyond limitations imposed by other parts of the plane or the materials the plane was made of.  But if you made the wing out of unobtanium and the motors were good to mach 5, the wing would still work predictably.  At least that's what I heard, not sure if its true or not.

BUT... its still a significant achievement.  A great many earlier planes were speed restricted due to the formation of shock waves or other instability due to the wing design.  The F-4 was apparently unique in that unlike most other earlier planes, the max speed wasn't set based on when the wing started acting badly.  No control reversion/reversal, no locked controls due to shock wave formation, no unreasonable changes in pitching moment, no tail blanking, etc.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 20, 2017, 02:23:57 AM
For the purposes of this discussion IRT drag "Delta" = Mirage III, Mirage 2000, Mirage 4000, F-102, F-106, etc., not F-4, F-16, F-15, MiG-21, etc.

Then why did you claim "they're not used"? You're contradicting yourself.

Not true.  Pure delta wings are notorious for high drag particularly at lower speeds.   This is why they're not used.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 20, 2017, 03:05:26 AM
Greek Mirage 2000 owning a Turkish F-16C. The "pure" delta-winged Mirage can certainly hang with a Viper.



https://www.youtube.com/watch?v=7hLsWKrEAhM
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 20, 2017, 03:51:13 AM
Greek Mirage 2000 owning a Turkish F-16C. The "pure" delta-winged Mirage can certainly hang with a Viper.



https://www.youtube.com/watch?v=7hLsWKrEAhM

That's just two delta-winged aircraft fighting each other.  Tailless delta vs cropped delta. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 20, 2017, 04:03:16 AM
That's just two delta-winged aircraft fighting each other.  Tailless delta vs cropped delta.

Indeed, but Vraciu insists that the "pure" delta can't turn worth a damn.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 20, 2017, 05:27:38 AM
...
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 20, 2017, 06:07:52 AM
<snip>
Does that make any sense or are we talking in circles still?

Perfect.  Thank you eagl.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 20, 2017, 08:08:57 AM
Excellent overview Eagl!  Thanks!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 20, 2017, 03:34:13 PM
Question:  Do the F-14 and B-1b have delta wing flight characteristics with wing fully swept?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 20, 2017, 03:41:10 PM
Yes.  :aok

One of the major advantages to the swing-wing concept. Delta-wing characteristics + swept-wing characteristics + straight wing characteristics, whenever the pilot wanted.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 20, 2017, 04:23:49 PM
I remember reading that during mock dogfights that pilots could easily tell the F-14's energy state just by looking at the position of the wings.  So savvy F-14 pilots would manually change the position of the wings instead of setting it to "auto".  Guess it maneuvered decently in delta configuration too (large part of lift was produced by the body of the aircraft iirc).

There is a great book on one of the last F-14 squadrons called "Black Aces High".  Details their combat actions during the 99 Serbian air war. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 20, 2017, 04:24:36 PM
At the cost of increased weight and increased complexity of course. And since the swept wing fighters were relatively short lived (in terms of when they were designed and produced) I guess that in the end it wasnt worth that cost.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 20, 2017, 04:41:53 PM
It was worth it at the time, but advances in aerodynamic design and engine power has made swing-wing obsolete. However... Shape changing aircraft may see a revival in the not so distant future.

https://www.nasa.gov/press-release/nasa-successfully-tests-shape-changing-wing-for-next-generation-aviation
Title: Re: Flight characteristics of the F-4 Phantom
Post by: rabbidrabbit on January 20, 2017, 05:01:55 PM
Having read all this, I still have concerns about a Delta style wings performance when taking off from a treadmill.  Can it be done or will excessive drag combined with the treadmill speed negate the vortices lift benefits?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 20, 2017, 05:31:12 PM
I remember reading that during mock dogfights that pilots could easily tell the F-14's energy state just by looking at the position of the wings.  So savvy F-14 pilots would manually change the position of the wings instead of setting it to "auto".  Guess it maneuvered decently in delta configuration too (large part of lift was produced by the body of the aircraft iirc).

There is a great book on one of the last F-14 squadrons called "Black Aces High".  Details their combat actions during the 99 Serbian air war. 

We in the F-106 were also savvy when flying against F-14s.  We had a data link UHF receiver that could be used to monitor their inter plane tactical frequency and be up to date with what they were going to do prior to and during a dog fight.  On one occasion, we briefed a two v two for some aerial jousting.  My wingman had a mechanical at the quick check before takeoff and had to abort the sortie.  So, I launched, checked in with GCI and started making radios calls in two different voices to myself over our briefed frequency.  Not knowing what kind of secondary radio the Tomcats had, I figured, why not.   I was also monitoring their frequency on my data link receiver.  So, when both "sets" of fighters called ready to GCI, it was fight's on.  Our ROE was heaters and guns, and nor turns or altitude deviations until passing the 3/9 line.  On the first pass I aimed straight at the two of them as my wingman and I made the appropriate tactical calls.  With a visual on both, I picked the closest one and went nose to nose, with briefed altitude separation, and rolled inverted to pass canopy to canopy at the merge.  They were both hesitant to turn because my wingman was still not in sight.  So, as a I blew straight through, they did the same.  Well, on the second engagement the exact same thing occurred.  Engagement three was different.  I could hear them chattering back and forth about not ever seeing a second Six and that they were probably fighting a single ship.  This time, as we made the canopy to canopy pass, we all turned, I got my one good bat turn out of the way, and the two of them ate my lunch. 

In the F-4, the opponent F-4's energy state in a turning fight was reasonably easy to measure by the amount of stabilator deflection the pilot was inputting.  Near full deflection=nearly out of airspeed and ideas.  Additionally, observing the amount of aileron and spoiler deflection was also telling.  With both of these near full deflection, there soon had to be some sort of nose down, full AB maneuver in an attempt to regain speed and avoid a snap shot.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 20, 2017, 05:52:19 PM
So when your F-106 blew past the F-14s, and they kept on going straight, was the fight over? Considered a draw?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 20, 2017, 09:37:24 PM
So when your F-106 blew past the F-14s, and they kept on going straight, was the fight over? Considered a draw?

They also blew through because they couldn't find my wingman.  If they had turned on me, he would have jumped them........well, if he was really there.  So, they extended out and we called a mutual "knock it off" and set up for another one.  Yes, a draw, and another one, and then they figured out what I was doing to them.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: 1Duke1 on January 20, 2017, 11:43:18 PM
Ever wonder why the Tomcat came into the break with wings swept back?? :evil:

I bet Mace knows...
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 20, 2017, 11:52:21 PM
Mace has posted about that before - anyone know where Mace went? 

Great posts Puma/Eagl.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 21, 2017, 12:23:29 AM
Ever wonder why the Tomcat came into the break with wings swept back?? :evil:

I bet Mace knows...
Tactical speed up initial, faster roll rate in the break,.......?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 21, 2017, 09:56:54 AM
Having read all this, I still have concerns about a Delta style wings performance when taking off from a treadmill.  Can it be done or will excessive drag combined with the treadmill speed negate the vortices lift benefits?

Good one!  :D
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Devil 505 on January 21, 2017, 10:44:00 AM
Ever wonder why the Tomcat came into the break with wings swept back?? :evil:

I bet Mace knows...

Because it looks cooler.  :aok
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 21, 2017, 10:46:05 AM
That too!  It sounds pretty cool also!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Nilsen on January 21, 2017, 03:57:11 PM
This is a true Delta shape

(http://l7.alamy.com/zooms/65e1fb614d084121be0751d9fe16bebd/delta-force-2-delta-force-2-the-colombian-connection-anne-1990-usa-b7rkad.jpg)

Title: Re: Flight characteristics of the F-4 Phantom
Post by: 1Duke1 on January 21, 2017, 11:14:03 PM
Because it looks cooler.  :aok

You sir are correct!!  It was the only reason :rock

If you were going to do anything in the Turkey, you had better have looked cool doing it!!!!

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Oldman731 on January 21, 2017, 11:34:07 PM
You sir are correct!!  It was the only reason :rock

If you were going to do anything in the Turkey, you had better have looked cool doing it!!!!


Good lord, it's Duke.  Dude!

- oldman
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 21, 2017, 11:39:05 PM
 :rofl Go out on a training sortie and completely screw it up by the numbers and it'll get worked out in the debrief.  Coming into the pattern and up initial, ya dang well better look good because EVERYONE on base will be watching and critiquing it.  Screw that up and look anything other than "way cool" and you'll hear about it for a month.  :salute

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/7A7CE08A-6803-4E32-8E05-3A6D643E702F_zpsec4ucyjg.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/7A7CE08A-6803-4E32-8E05-3A6D643E702F_zpsec4ucyjg.jpg.html)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 22, 2017, 04:03:55 AM
"way cool" is nailed on that one  :aok
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 23, 2017, 11:02:12 PM
Speaking of that B2 strike (military dailies/etc said it was 500lb JDAMs used), one of the sites confirming the strike/weapons posted this vid of a B2 dropping 80 500lb JDAM in a test.  Wow, pretty crazy effects, even without explosives, seeing what that plane can do to a large area with various targets in a blink of the eye...
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on January 25, 2017, 03:10:07 PM
Beautiful Phantom video.

https://theaviationist.com/2017/01/25/this-video-will-literally-bring-you-to-the-paradise-of-phantoms/
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Devil 505 on January 25, 2017, 03:41:48 PM
Skuzzy,

It's semantics at this point, but the broad approach I was taught dealt with wing design almost like a series of families or categories of wing shapes.  Straight unswept without taper would in general behave like *this*, swept would behave like *this*, add taper to the chord and *this* happens, thin the airfoil out towards the tip to address *this* performance drawback which results in *this* other thing...  A "delta" wing was merely a roughly triangular shape that would have basic characteristics that were similar and predictable to all "delta" shapes.  So you could either pick a generic planform based on the performance characteristics you wanted when you were designing a plane, or if you had an existing design you were trying to test or characterize, you could predict various performance and behavior modes just by looking at the shape and airfoil, and make some assumptions as you started collecting hard data to refine the predictive models, come up with stability augmentation laws, or whatever.

I can look at the planform of any opponent's fighter, and just from looking at the planform view make a good guess as to how I want to fight it, what its good at, and what it sucks at.  Without anyone telling me, I can look at a mirage 2000 and know it has one awesome bat-turn that would be deadly at the merge, and it can probably cruise very fast and efficiently with a fairly heavy loadout.  But in a sustained turn I can probably out rate it unless I get way too slow as well.  The mig-21 has great low speed handling so don't try to win a flat scissors against one, because he can roll faster than I can at low speeds and he can probably get some good AOA to point the nose even when slow, but he'll be bleeding speed fast if he keeps pulling.

Just look at the differences between a spitfire with elliptical wingtips and a cropped-tip spitty.  The elliptical planform has very low drag and good handling up to the stall, but the stall almost immediately makes the ailerons useless because of where the flow separation begins on that kind of wing.  Crop the tips and you get a completely different (and predictable) set of behaviors in various flight regimes.  Adding winglets is another way you can have a very wide variety of wingtip shapes, but they all do things like change the lift distribution across the span and increase loading on the outboard wing, in addition to reducing wingtip vortice drag.  The exact shape doesn't matter when considering what ought to happen, you get certain performance changes almost no matter what the actual winglet looks like.  The shape DOES matter when you need to know how much things have changed, but only in terms of how much each aero characteristic is changed by the presence or absence of the wingtip device.

And that's because wing shapes can be understood in terms of very broadly defined categories, and you can make a good guess as to how it'll fly in general.  Knowing this, you can even predict what happens when the general shape is modified in some way.  Like putting swept and cropped wingtips on an F-15 for the area that has the ailerons, you get some behaviors of a delta wing but the wing will have some of the airflow characteristics of a swept wing over just the ailerons and wingtips.  They started with a delta wing shape, and modified it to achieve certain behaviors.

Does that make any sense or are we talking in circles still?

This was very informative. Are there any flight characteristics based on how high on the fuselage the wings are placed? IE: F-4's are low wing, F-16's are mid wing, and F-15's are high wings.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bustr on January 25, 2017, 04:03:05 PM
In 1965 were any of you F4 drivers the ones who would take off from Kelley AFB with your after burners. From all of the boys at Winston Elementary School 3rd grade, we salute you. We lived for your takeoffs to rattle the windows and rumble the floors while we were in class. The B52's were the warmup show. :lol
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 25, 2017, 04:46:48 PM
Beautiful Phantom video.

https://theaviationist.com/2017/01/25/this-video-will-literally-bring-you-to-the-paradise-of-phantoms/

Thanks Gman!  That brings back so many vivid sensory memories.  I can even smell the JP-4 and burnt rubber.   :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 25, 2017, 04:50:57 PM
In 1965 were any of you F4 drivers the ones who would take off from Kelley AFB with your after burners. From all of the boys at Winston Elementary School 3rd grade, we salute you. We lived for your takeoffs to rattle the windows and rumble the floors while we were in class. The B52's were the warmup show. :lol

I was still in grade school then but, remember the constant rumble and sonic booms of Phantoms over the Tularosa Basin while growing up.  I still remember the first time a four ship buzzed the neighborhood around my elementary school.  I was instantly hooked and knew that's what I wanted to do some day.  A dream come true.  Never stop chasing your dreams!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 25, 2017, 07:34:08 PM
This was very informative. Are there any flight characteristics based on how high on the fuselage the wings are placed? IE: F-4's are low wing, F-16's are mid wing, and F-15's are high wings.

Not really sure. There are lifting body aircraft with all 3 wing positions so I'm not sure the exact benefit.  I do know that the high wing does permit carriage of larger payloads on wing pylons...
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 26, 2017, 08:07:06 PM
Indeed, but Vraciu insists that the "pure" delta can't turn worth a damn.

After mastering the Lightning  and Tornado, the RAF’s Ian Black volunteered to fly France’s hottest fighter, the superb Mirage 2000. Black explains what is was like to fly the ultimate Mirage, and how it fared in dogfights against the most formidable fighters of the 1980s. Ian flew the Mirage 2000 from 1993-97.

Is it easy to fly?

“Yes and no. It’s easy to fly once you get the hang of it but the delta wing takes a unique approach to flying – it’s not like a conventional wing. It generates huge amounts of lift but also an enormous amount of drag – great for a ‘Bat Turn’ but you always end low on energy afterwards.

What is the hardest thing about flying the Mirage 2000- any quirks?

“As mentioned, the delta wing could catch you out, it would give you 9G+ performance but at a penalty...

How would you compare the aircraft to an F-16?

“I’d say the F-16 has the edge – whilst the M2000 evolved from the RDM – RDi to RDY versions they were pretty small upgrades in terms of airframe performance – The latest Block F16s are a world apart from the original F-16As. Part of the Mirage 2000’s problem was the arrival of Rafale, which pretty much stopped any further development.”

(Edit In: This is in line with my buddy "Jihad" who was an F-16 FW Instructor.   His verdict: A [properly flown] big mouth F-16 should have no trouble against a Mirage 2000.   The following F-16 FW Instructor concurs.)

_______________

Lt. Col. Fred "Spanky" Clifton is one of the most experienced aggressor pilots ever, having flown the F-15, F-5, F-16 and the notorious MiG-29. He's been in dogfights with pretty much every fighter out there and is a graduate of the prestigious Fighter Weapons School. Now he's here to share his expertise with you.


Over the years you have flown against so many different fighters from around the globe, what foreign fighter aircraft surprised you as to their capabilities, or lack thereof, during dissimilar air combat training events (fighting against a different fighter types)?

    Probably the most I've ever been surprised by a DACT adversary was flying against Mirage 2000s from the French Air Force when I was flying the MiG-29. I had read all kinds of glowing reports about the Mirage. The few times I did fly against them, either the jet isn't all it's cracked up to be or we were flying against the worst Mirage 2000 pilots in the French Air Force. I was not impressed.

...

F-16C/D: The Viper is, in my opinion, what a fighter should be. It is small, nimble, accelerates like a bullet and is a pure joy to fly. Instead of loading it down with bombs, the radar should have been improved to give it Eagle-like capabilities and the jet should have taken more of an air-to-air role. While I said that the F-15 is like a Mercedes, The F-16 is like a Formula One race car. The cockpit is tight and it gives you more of the sensation that you're actually wearing the jet than actually sitting in it. The side-stick controller takes about as much time to get used to as it takes to read this sentence.

I've flown all the C/D versions – Blocks 25, 30, 32, 40, 42, 50, 52. The Pratt-powered Blocks 25, 32 and 42 are good performers, but not great. The GE-powered Blocks 30, 40 and 50, plus the Pratt-powered Block 52 are absolute beasts. The GE-powered fleet is flown by the active-duty F-16 squadrons while Air National Guard and Reserve squadrons operate a mixed bag of GE-powered and Pratt-powered Vipers. I've never flown a jet that will out accelerate the GE-powered F-16. At low altitude, GE Vipers will step out to its airspeed of 810 knots indicated airspeed like nobody's business. The limit is based on the polycarbonate canopy and not the engine. At higher speeds the canopy starts to get warm due to air friction. At some point the canopy will start to deform if the jet gets much faster. At high altitude, I've had the jet out to Mach 2.05. This limit is due to the fixed air inlet and opposed the F-15's variable geometry inlet.

In his book, Sierra Hotel: Flying Air Force Fighters in the Decade After Vietnam, Col C.R. Anderegg, USAF (ret), former F-15 pilot and F-4 Fighter Weapons School graduate, wrote this about the F-16: "The pure joy of the F-16, though, was in the furball (complex dogfight with many aircraft), where the aircraft had the edge over the F-15 and a significant edge over everything else. With the F-16's incredible agility and power, the pilot could get close and stay close. He was less a viper than a python gradually squeezing the fight closer while beating down his victim's energy and resistance until the time came for a mortal blow. Chaff might spoof a radar missile or flares might decoy a heat-seeker, but as one pilot said, 'The gun is stupid. You can't jam it and you can't fool it.' The F-16 was a superb gunfighter, and in the furball it was the top cat."


Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 26, 2017, 08:10:44 PM
:rofl Go out on a training sortie and completely screw it up by the numbers and it'll get worked out in the debrief.  Coming into the pattern and up initial, ya dang well better look good because EVERYONE on base will be watching and critiquing it.  Screw that up and look anything other than "way cool" and you'll hear about it for a month.  :salute

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/7A7CE08A-6803-4E32-8E05-3A6D643E702F_zpsec4ucyjg.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/7A7CE08A-6803-4E32-8E05-3A6D643E702F_zpsec4ucyjg.jpg.html)

That's a beautiful photo.

Funny thing about the Six that sticks in my mind...   The F-4 was supposed to replace it with ANG but it soldiered on until the F-16 did instead.    Could be a faulty memory but that's how I recall it.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 27, 2017, 12:12:19 AM
After mastering the Lightning  and Tornado, the RAF’s Ian Black volunteered to fly France’s hottest fighter, the superb Mirage 2000. Black explains what is was like to fly the ultimate Mirage, and how it fared in dogfights against the most formidable fighters of the 1980s. Ian flew the Mirage 2000 from 1993-97.

Is it easy to fly?

“Yes and no. It’s easy to fly once you get the hang of it but the delta wing takes a unique approach to flying – it’s not like a conventional wing. It generates huge amounts of lift but also an enormous amount of drag – great for a ‘Bat Turn’ but you always end low on energy afterwards.

Let's not quit there, let's quote Ian some more:

"DACT was interesting in the M2000 – if your opponent was new to fighting a delta it could make his eyes water! At the merge the initial 9G+ turn was eye-watering, despite having a single engine it could still reach heights other fighters like the F-16 couldn’t. It also possessed, in my opinion, a far more sophisticated fly-by-wire system – it was in effect limitless. I managed to put a Mirage 2000 into the vertical whilst being chased and held the manoeuvre a few seconds too long – when I looked into my HUD I was in the pure vertical at 60 knots and decelerating ! As we hit Zero the aircraft began to slide backwards and the ‘burner blew out. My heart-rate increased. As the aircraft went beyond its design envelope, the nose simply flopped over pointing earthwards – with a few small turns the airspeed picked up. As I hit 200 knots I simply flew the aircraft back to straight and level."

How would you rate the M2000 in the following:

 Instantaneous turn rates (at low/medium and high altitudes)

“Stunning – at all altitudes – with its big wing even at 50,000 feet using the leading edge slats it could still turn well.”

Sustained turn rates (at low/medium and high altitudes)

“Sustained turn was still good, especially at low level where you had sufficient energy to maintain speed.”

High Alpha

“The Mirage 2000 was legendary at its low speed high Alpha Passes -120 knots was pretty easy to fly.”

Which three words best describe the M2000?

“Vive La France !  It’s Sexy. It’s French – Dassault make fine aircraft and apart from the ejector seat it pretty much is 100%. Future-Proofed – The M2000 first flew in 1978 and it’s still in service in 2016 – despite its sleek frame it’s built like a tank and can pull 9G all day long.”

How does it compare to the other aircraft you have flown?

“The Mirage 2000 is a fourth generation fighter – and extremely capable in both air-to-air and air-to-ground roles – as well as being highly manoeuvrable even when loaded up. The Tornado was extremely competent at the role of interceptor, but lacked the agility of Dassault’s masterpiece.”

 :aok
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 27, 2017, 12:24:12 PM
He is talking about durability, not sustained turn. 

The only way you'll sustain a 9G turn in a Mirage is downhill.  Eventually the ground wins.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 27, 2017, 12:56:10 PM
If you bother to actually read, he's absolutely talking about sustained turns.

Sustained turn rates (at low/medium and high altitudes)

“Sustained turn was still good, especially at low level where you had sufficient energy to maintain speed.”
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 27, 2017, 01:02:14 PM
No, he isn't.   

The airplane gets one hard (in this case 9-G) turn and it's out of energy.   

Sustained turn is "okay" not world-beating.  This is typical for a delta.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 27, 2017, 01:20:39 PM
Try reading his words here. I'll adjust the font size to help you out:

“Sustained turn was still good, especially at low level where you had sufficient energy to maintain speed.”
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 27, 2017, 09:39:51 PM
When the difference between winning and losing is only a few percent (as it is in most things), small differences like having cropped wingtips (like the F-16) which reduce drag could be a major factor over the traditional delta wing.  Thrust to weight ratios, wingloading, and other goodies like that come in to play.  Of course like Eagl said, all the various forms of delta wings share the same basic characteristics.  But that doesn't mean there aren't small differences between different styled delta wing aircraft.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: eagl on January 28, 2017, 01:01:04 AM
I got first-shot opportunities on occasion flying an F-15E against an F-16 when the viper driver sailed on past riding his AOA limiter, while I was free to spike the AOA deep into the "bad" part of the lift/drag chart, giving me a shot while he was still trying to slow down enough to use his turn rate and radius advantages.

I've also flown an F-15E (the big motor variant) and accelerated during an 8G 180 deg turn at low altitude.  If you're talented enough to ride the best sustained turn AOA instead of stupidly automatically spiking the AOA past best L/D, even a pure delta design like the mirage has a hell of a sustained turn, like that pilot was writing about when comparing the mirage to the F-16.  The trick is to fight your best fight against your opponent's worst fight.  In an F-15, I could on occasion exploit the F-16's AOA limiter by using my ability to swing the nose around and decelerate inside his turn circle faster than the viper could react, and get off a first shot.  Not always, and not even most of the time because the viper can turn up its own bunghole.  But that was my best fight against his worst fight.

Assuming I was dumb enough to get within visual range of the little bastages anyhow...  A talented F-15E crew could usually keep SA on 2-4 vipers as they wormed their way to the merge, picking them off one by one with high Pk shots before they got within 10 miles.  Its hard for even a viper to defend against a well timed no-lock heater in the face as he pitches hot, and thanks to *gadgets* I could often accurately cue weapons long before they could see me.

I can easily see a mirage sustaining very high Gs at lower altitudes, as long as the pilot kept it at or below his best sustained turn AOA.  The delta wing only has a drag spike if you keep pulling the AOA up, and modern high lift devices like drooping leading edges and flaperons combined with fly-by-wire and relaxed stability are very effective at improving the lift/drag curves of even a pure delta design.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 28, 2017, 01:33:14 AM
Good write-up Eagl!  :aok  I'd just like to add that there is also a biological limit to how long high-G turns can be sustained. At some point the pilot will have to ease off on the Gs or nature will do it for him.

Unless Vraciu or someone else wants to continue this digression I'd like to end with a superb video I found. These aerial shots are some of the best I've ever seen. Simply stunning!

https://www.youtube.com/watch?v=m15Jd1A5OPU
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Brooke on January 28, 2017, 02:12:12 AM
Beautiful, Pr3d4tor.  :aok
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 04:17:49 AM
Try reading his words here. I'll adjust the font size to help you out:

“Sustained turn was still good (NOT OUTSTANDING), especially at low level where you had sufficient energy to maintain speed.”

FIFY.


Try reading his words here...

“Yes and no. It’s easy to fly once you get the hang of it but the delta wing takes a unique approach to flying – it’s not like a conventional wing. It generates huge amounts of lift but also an enormous amount of drag – great for a ‘Bat Turn’ but you always always always ALWAYS end low on energy afterwards."


ALWAYS.

Not sometimes.  Not once in awhile.  Not "only against F-16s" or on Tuesdays or holidays, or when Predator says so.

ALWAYS.

This is exactly what Puma said.  It is exactly why eagl said he uses planforms to determine how to fight other airplanes, and that he knows a delta will not have the same sustained energy he does.



And here...


“As mentioned, the delta wing could catch you out, it would give you 9G+ performance (NOT SUSTAINED 9-G performance) but at a penalty...


That penalty is drag and a significant loss of energy that will turn you into a 2- or 3-G guns target.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 28, 2017, 09:27:00 AM
Good write-up Eagl!  :aok  I'd just like to add that there is also a biological limit to how long high-G turns can be sustained. At some point the pilot will have to ease off on the Gs or nature will do it for him.

Unless Vraciu or someone else wants to continue this digression I'd like to end with a superb video I found. These aerial shots are some of the best I've ever seen. Simply stunning!

https://www.youtube.com/watch?v=m15Jd1A5OPU

Excellent point PR3D4TOR.  Great video!  Thanks!

It appears this dead horse has been beaten to a pulp.

As Eagl said, his best fight against the other guy's worst fight.  It is usually the first one to make a mistake that loses the fight, no matter how cosmic a ride he's flying. 

"Hamburger is still hamburger, no matter what you wrap it in".  :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 11:02:11 AM
Excellent point PR3D4TOR.  Great video!  Thanks!

It appears this dead horse has been beaten to a pulp.

As Eagl said, his best fight against the other guy's worst fight.  It is usually the first one to make a mistake that loses the fight, no matter how cosmic a ride he's flying. 

"Hamburger is still hamburger, no matter what you wrap it in".  :salute

If there's anything I've learned in AH it's that my first ground instructor's hyperbole was not too far from the truth.   "Give me a Cessna 152 and a pistol and I can whip anyone if I fly my airplane right." He was a retired Marine with 250+ missions in Vietnam. 

He had a funny story about doing an ADIZ intercept on a wayward 172 near Florida and their attempt to get the N-number off the tail.   Something about how the guy would turn at just the right moment to keep the backseater from getting a good look.   Vroom they would stagger by with everything hanging out trying to reset.    It was hilarious. 

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Ack-Ack on January 28, 2017, 11:34:39 AM
It's great reading these kinds of posts from resident experts (like eagl and puma44) that know what they are talking about and very funny reading posts from people that think they are.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 12:39:23 PM
It's great reading these kinds of posts from resident experts (like eagl and puma44) that know what they are talking about and very funny reading posts from people that think they are.


What's your expertise in flying, of any kind?   (Since people like to throw that question around.)

Funny enough they're both saying things I've said repeatedly.   But I guess I don't know anything. 


Insert eyeroll. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 28, 2017, 12:50:00 PM
I would have to agree with Ack-Ack. Im not saying that you dont know anything, im sure you know a lot of stuff, but  your arguments are basically "Deltas bleed a lot of E when they turn so no Delta wing aircraft can turn very well" and this have been disproved but you are still fighting your fight, without backing it up with anything.

That makes it a bit hard to take your opinions seriously.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 01:36:45 PM
I would have to agree with Ack-Ack. Im not saying that you dont know anything, im sure you know a lot of stuff, but  your arguments are basically "Deltas bleed a lot of E when they turn so no Delta wing aircraft can turn very well" and this have been disproved but you are still fighting your fight, without backing it up with anything.

That makes it a bit hard to take your opinions seriously.

I just quoted a Mirage 2000 pilot who said EXACTLY what I stated.

You have an F-106 driver IN THIS THREAD saying the same thing about the Six.

You have an F-15 driver in this thread noting the deficiencies in sustained turn of a delta like the Mirage (and how this affects his approach to the fight).

I have two F-16 FW instructors, one of whom I flew with for two years, both saying the Mirage 2000 is not that great, particularly against the Viper.

The delta wing planform has significant and well-known disadvantages as stated by the pilots who actually flew the darned things.

So, yeah, don't take what I say seriously.    :rolleyes:

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 28, 2017, 01:54:06 PM
Dont worry, I dont.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 02:39:27 PM
See Rule #4
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 28, 2017, 09:20:05 PM
Making fun of Zimme83's English. Classy. How's your Swedish Vraciu?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 09:52:02 PM
See Rule #12
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 28, 2017, 09:57:26 PM
See Rule #2
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 28, 2017, 10:00:39 PM
See Rule #4
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 28, 2017, 10:11:05 PM
See Rule #4
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Zimme83 on January 29, 2017, 01:49:25 AM
See Rule #12
Title: Re: Flight characteristics of the F-4 Phantom
Post by: 1Duke1 on January 29, 2017, 01:51:26 AM

Good lord, it's Duke.  Dude!

- oldman

Still lurking the boards OM :)  Don't have the system specs anymore to run AH like I want it to, but keeping up on the changes.  Due for an upgrade soon when I can get CINCHOUSE to agree to the budget proposal :bolt:
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 29, 2017, 02:58:32 AM
See Rule #12
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Skuzzy on January 29, 2017, 07:23:07 AM
Next person who violates this thread, with a personal attack (of any kind) is going to get a 30 day suspension from the board.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on January 29, 2017, 07:27:37 AM
This thread has run its course.  Let's just shut it down. OP.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 29, 2017, 02:58:18 PM
Still lurking the boards OM :)  Don't have the system specs anymore to run AH like I want it to, but keeping up on the changes.  Due for an upgrade soon when I can get CINCHOUSE to agree to the budget proposal :bolt:

In the same boat.  My F-4 era computer was on the cutting edge in its day.  Now, it has to load shed a lot of bells and whistles to break even.  But, it can still get one good "bat turn" in once in while.

Back to F-4 flight characteristics, then there was the time we deployed eight F-4s to Cairo West from Moody AFB one hot August night.  High cruise altitude with all the stuff the mx guys could hang on the external racks, behind two KC-10s, air refueling through the tops of towering cumulus.........12.6 hours logged that night/day/early evening........... :O

....11 ARs before we landed.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rich46yo on January 29, 2017, 03:28:57 PM
Funny story, when I was stationed at Incirlick in S/E Turkey back in the '70s, indeed at every base I personally was stationed at, the only fighter I ever saw myself was the F-4 Phantom. We were getting 15's and 16's into USAF but I was never at a base that had them.

During the Iran Hostage crisis I saw one of the last operational B-57 Canberra's that was set up for Intel gathering. But I never saw a different kind of fighter.

Now my kid just caught orders to the very same base, which has me concerned, but he will see a totally different USAF there then I did. He will see all kinds of war planes, including drones, because the base is ground zero for a shooting war USAF is in against terrorists.

The Phantom was the fighter of my youth and I'd spend hours on the flight line watching them fly, or many more hours protecting them while they were in their hangars. Squadrons would rotate in from all over Europe. I remember those old smokey engines on some of them. Many of the Pilots were 'nam vets, some had kills, and they knew they were just riding out their careers in an airframe that didnt have much more life left in it.

I once saw a squadron commander hit both burners right over the base and go, what looked like, straight vertical. I'll always love that airplane.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Arlo on January 29, 2017, 03:36:42 PM
The first Blue Angels show I went (as a Navy brat at Corpus Christi NAS) to was a Phantom one.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 29, 2017, 08:39:29 PM
I'd like to hear from Rhino I believe his name was! I still have a saved story somewhere, he told about his buddy G+13 dropping fuel tanks on Vietnamese boaters during the war  :D

     Well technically the Phantom wasn't a true aircraft.  It was a flight demonstrator
for General Electric J-79s :)  Also in fairness, Major G+13 didn't actually hit the
sampan, he just got the DT close enough to make the VC jump for it.

     I was a radar mech, so I worked the pointy end of the jet more than
the flight controls.  I do remember being very impressed by the sheer
amount of moving parts on the wings during preflights when we did a
stick stir. 

     I heard some numbnut on the Hitler Channel describe the F-4 as a
long series of mistake corrections in the flight control regimen.  He
obviously did not appreciate the "Double Ugly" for the magnificent
machine it was.  Over 40 years in service..yeah what a piece of crap...
moron.  Stick to stories about Hitler's psychic's magic dog or something
more up your alley :)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 29, 2017, 08:55:23 PM
Did not know that about the E.  I knew the slats, which I believe were a later-run mod, made the airplane turn better but that's good info right there.  I didn't fly it just picked the brains of a lot of guys who did.  Any errors in translation are mine, not theirs.

Most of the guys I knew flew Bs and Js with a few C and D drivers thrown in.  I think one of the Marines I knew flew the S but it was on its way out.  Knew a few of the Weasel guys (including one F driver from the GAF) but the mission was different so I never got much of the scoop on the G (converted E). 

Did you ever run into Ed Rasimus?   Cool dude.  Good writer. 

Any way, thanks for shedding some light on that machine.   Great stuff.

     We had block 35 Es from 67-8 at Moody in the 80s.  They had the leading
edge slats but no TISEO <Target Identification System Electro Optical> so I
imagine they couldn't be that late a model.

     I always loved the sound those slats made overhead, sort of an spooky
Whooo-Whooo-Whooo.

     When I went to school out at Lowery in Denver/Aurora, the only two birds
I was authorized to work were the E and G.  The F was German only, basically
a very late E also with the M-61 nosegun.  The G replaced the gun with a
special radar receiver which helped track SAMs.  Still weasel drivers had great
big ones that clanged when they walked.  :aok
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 29, 2017, 09:09:53 PM
I suspect the Israeli's much better training, proficiency, and well maintained aircraft had a lot to do with it.  It would be interesting to see a nose to nose comparison with equally trained and proficient pilots, and maintained aircraft. 

On an exercise deployment to Cairo West Air Base in the F-4, I had opportunity to fly a combined four ship low level and dry ground attack with the Egyptian Wing Commander.  I graciously and stubbornly agreed to him leading the four ship.  Low level was normally flown at 480 knots in the F-4.  As we followed in a tactical formation the airspeed was anywhere from 250 to 540 knots.  There was never a stabilized airspeed during the 200+ mile low level, not to mention altitude deviations.  There was a whole list of others less glaring debriefable items but, you get the picture.  We also had opportunity to examine the Egyptian Rhinos.  They were in horrible condition, sand blasted from being in the elements, didn't have engine inlet and exhaust covers installed while parked, etc.

Later, at home, a tasker came to send to crews to Cairo West to ferry two Egyptian F-4s to Hill AFB, Utah for PDM.  A couple of our younger crews jumped on the opportunity for all that XC time.  They're first stop out of Cairo was Torrejon, Spain.  Both jets landed with multiple red X write ups (groundable maintenance issues) and were stuck there for two weeks waiting for parts to arrive.  They finally arrive at Hill nearly a month later.  PDM personnel told our guys they hated seeing Egyptian F-4s show up because of the incredibly poor maintenance or lack there of.  Apparently, it was typical for the Egyptian jets to have upwards of 2,000 pounds of sand in the bottom of the engine bays. 

Months later, another tasker came down to ferry two more F-4s from Cairo to Hill.  Our same two crews jumped on the opportunity.  They had the same first stop at Torrejon, multiple red Xs, and were stuck there for a full months because of the severity of maintenance issues.  When our guys finally got home, we asked what that did for a whole month in Torrejon.  They just grinned.

     There was an interesting story making the rounds at Moody just when I got
there in 82.  We sent over 24 birds to Bright Star to play with the Egyptians.
They had birds that were 5 years younger than ours, but we had to drop our
surge sortie rates from 70-80 flights a day down to 25.

     The reason we had to slow down was that the Egyptians with the same
number of birds could only generate 5! flights a day.  Now I wasn't there so
I got this 2nd hand.  Evidently the mechs over there would work a bird for
2 hours, then pray to Allah and go home.  Apparently Allah was not a very
good aircraft mechanic  :neener:
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 29, 2017, 09:39:00 PM
Payload capacity was the one characteristic where the F-4 truly shined brighter than all others. As a bomb truck it has few rivals.

(https://s-media-cache-ak0.pinimg.com/564x/e2/e1/ab/e2e1ab427f0c02f0b13a32b4ea151cf9.jpg)

     That picture is not complete, it's missing a GPU-5!  Ok, we didn't use it long
because it tried to kill one of our Es, but we did mount it.

http://weaponsystems.net/weaponsystem/HH13%20-%20GPU-5.html (http://weaponsystems.net/weaponsystem/HH13%20-%20GPU-5.html)

     Basically a 4 barrelled GAU-8A <A-10 gun>.  The recoil was so bad it broke
a bunch of hydraulic lines on one of the first birds we mounted it on.  It was
also so fat that the poor weapon load crews had to load it by hand because
we didn't have a loader that would fit under the centerline.

     I also saw a picture in a book of an A-7 SLUF carrying two on the wings in
addition to the internal 20mm.  Yeah right, fire all those guns at once and you'd
go from a Slow Low Ugly Blanker to a Stopped Low Ugly Blanker  :rofl
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 29, 2017, 09:54:27 PM
In the same boat.  My F-4 era computer was on the cutting edge in its day.  Now, it has to load shed a lot of bells and whistles to break even.  But, it can still get one good "bat turn" in once in while.

Back to F-4 flight characteristics, then there was the time we deployed eight F-4s to Cairo West from Moody AFB one hot August night.  High cruise altitude with all the stuff the mx guys could hang on the external racks, behind two KC-10s, air refueling through the tops of towering cumulus.........12.6 hours logged that night/day/early evening........... :O

....11 ARs before we landed.

     Wow!  That sounds like a marathon for sure.  Most of the ARs
mid atlantic by any chance?
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 29, 2017, 10:00:12 PM
     Btw Puma, one of my strongest memories of the 106 was watching a
pair "attack" us during an ORE at Moody.  These guys obviously came from
Tyndall, so their idea of mud movng was to come down the runway heading
from S-N at 15 feet in burner.

     The best part was watching the end of runway crew hit the deck when they
made their pass.  One of my pals was working the EOR at the time and he said
he could feel the exhaust on the back of his neck!

     That was a fun exercise, we got attacked by everyone from A-10s to F-15s
to Hueys from the Ga Air Guard.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 29, 2017, 10:27:16 PM
     Wow!  That sounds like a marathon for sure.  Most of the ARs
mid atlantic by any chance?

Yeah, great circle route up the east coast and across the Atlantic, Straits of Gibraltar, through the Med and into Egypt.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 29, 2017, 10:34:41 PM
     Btw Puma, one of my strongest memories of the 106 was watching a
pair "attack" us during an ORE at Moody.  These guys obviously came from
Tyndall, so their idea of mud movng was to come down the runway heading
from S-N at 15 feet in burner.

That would have been my preferred method also, clean the runway with the shockwave.  :bolt:
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 30, 2017, 12:27:07 AM
Was the F4 phantom the only plane to serve both in the Navy and the USAF?

It seems like the two services do not like to adopt each other's aircrafts.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 01:14:31 AM
Was the F4 phantom the only plane to serve both in the Navy and the USAF?

It seems like the two services do not like to adopt each other's aircrafts.

A-7 Corsair also did.  I am sure there are others.   
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on January 30, 2017, 02:02:01 AM
     That picture is not complete, it's missing a GPU-5!  Ok, we didn't use it long
because it tried to kill one of our Es, but we did mount it.

http://weaponsystems.net/weaponsystem/HH13%20-%20GPU-5.html (http://weaponsystems.net/weaponsystem/HH13%20-%20GPU-5.html)

     Basically a 4 barrelled GAU-8A <A-10 gun>.  The recoil was so bad it broke
a bunch of hydraulic lines on one of the first birds we mounted it on.  It was
also so fat that the poor weapon load crews had to load it by hand because
we didn't have a loader that would fit under the centerline.

     I also saw a picture in a book of an A-7 SLUF carrying two on the wings in
addition to the internal 20mm.  Yeah right, fire all those guns at once and you'd
go from a Slow Low Ugly Blanker to a Stopped Low Ugly Blanker  :rofl

What a beast!  :eek:
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 30, 2017, 09:16:26 AM
Was the F4 phantom the only plane to serve both in the Navy and the USAF?

It seems like the two services do not like to adopt each other's aircrafts.

The Skyraider also comes to mind.

The Phantom definitely had some Navy genealogy.  The main landing gear struts are very large and robust in order to withstand the punishment of carrier landings.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 10:59:33 AM
A-3 / B-66 is another. 

C-130.

Technically F-5 and F-16, but that's a stretch. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: bozon on January 30, 2017, 12:51:24 PM
The Skyraider also comes to mind.
Thanks, I did not know that. Thought it was only Navy. I need to do some more reading on that beast.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 01:22:30 PM
Thanks, I did not know that. Thought it was only Navy. I need to do some more reading on that beast.

I believe the Air Force got most, if not all, of their A-1s from the Navy.   I'd have to look that up though. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 02:22:22 PM
     Well our E models still had tailhooks and folding wingtips  And as
Puma can attest it took a long time to hand Jack those wheels off
the tarmac.  One of my more nervous moments was helping my
hydraulic buddies do a gear retraction test.  The Phantom didn't
seem that tall until it started wiggling around the jacks with
the gear up...whew.

     We also didn't have the easy mode hyd for raising the tips either
Imagine 4 guys trying to lift about 400 lbs of wing with their
fingertips about 6-8 inches from the fold point.

     I really. love this thread, bringing back fond memories.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 30, 2017, 02:26:05 PM
I really. love this thread, bringing back fond memories.

Indeed!  👍  A lot of great adventure memories coming out of storage.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 02:29:50 PM
Was the F4 phantom the only plane to serve both in the Navy and the USAF?

It seems like the two services do not like to adopt each other's aircrafts.

     It's all about the money,  if you don't spend it all, you don't get
more next year..   McNamara tried to force the F-111 on the Navy
and Marines, but it really wasn't suitable for cv ops.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 02:55:54 PM
     Well our E models still had tailhooks and folding wingtips  And as
Puma can attest it took a long time to hand Jack those wheels off
the tarmac.  One of my more nervous moments was helping my
hydraulic buddies do a gear retraction test.  The Phantom didn't
seem that tall until it started wiggling around the jacks with
the gear up...whew.

     We also didn't have the easy mode hyd for raising the tips either
Imagine 4 guys trying to lift about 400 lbs of wing with their
fingertips about 6-8 inches from the fold point.

     I really. love this thread, bringing back fond memories.

A buddy told me a story about stuffing the speed brakes under the wings of their Marine F-4Bs with toilet paper and dropping them on a Navy or Air Force parade/inspection formation as a prank.   

Another was less funny (still funny though).   Will tell that later. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 04:00:49 PM
     Was just screwing around looking for some decent F-4E pics when I
ran across this one.  This bird is kind of unique.  Notice the triple tail
stripes and the 347 tail number?  That means this was the wing-king's
bird.  <wing commander of the 347th TFW>.  It's also painted in the
spinach paintjob so it's pre 1983 when we went to a Euro-One camo
scheme where we eliminated the white and brown shown here,

(https://upload.wikimedia.org/wikipedia/commons/7/79/F-4_Phantom_II_in_flying.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 04:10:19 PM
     Here is a 70th squadron bird with the Euro-One and a target tow at Tyndall AFB.

(https://upload.wikimedia.org/wikipedia/commons/6/6b/F-4E_70_TFS_with_tow_target_at_Tyndall_AFB_1986.JPEG)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 30, 2017, 04:35:22 PM
     Here is a 70th squadron bird with the Euro-One and a target tow at Tyndall AFB.

(https://upload.wikimedia.org/wikipedia/commons/6/6b/F-4E_70_TFS_with_tow_target_at_Tyndall_AFB_1986.JPEG)

Nice photos Rhino!  I was a 70th White Knight.  I'm going to check my logbooks and see if I flew that tail#.  :salute

Yep!  Last flew 390 19 June 1987.  Last flight in the Rhino was 22 September 1987.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 04:38:16 PM
I really liked the all-gray Marine low-vis scheme right before it got retired.

This one here was a short-lived one but as a kid we always thought it was pretty bad a.

(http://dmn.wpengine.netdna-cdn.com/wp-content/uploads/2011/04/F-4J_VF-194_Tu-95_1977-1600.jpg)

Another story from a Marine Rhino buddy involves "looking cool" as discussed before.   Guys would select the gear lever up when lined up with the runway.   As the nose gear came up and the WOW decreased enough the gear would retract while still basically on the runway.   Well, one jarhead got airborne a little slower than was ideal and settled back onto the runway, skidding along on his drop tanks until the jet decided to finally fly.    Oops!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 30, 2017, 04:47:49 PM
(http://i906.photobucket.com/albums/ac270/puma44/F-4s/MePhantomandPhtogr.jpg) (http://s906.photobucket.com/user/puma44/media/F-4s/MePhantomandPhtogr.jpg.html)

Me on the left taking an Air Force photographer on an "incentive" ride.  We put the Rhino through the wringer.  He did really well and didn't spill anything on himself or my jet, in spite of looking through his camera for much of the sortie.

(http://i906.photobucket.com/albums/ac270/puma44/F-4s/783765C1-7B00-4EE6-9101-62BBBF7EDC11_zpsscjsvihf.jpg) (http://s906.photobucket.com/user/puma44/media/F-4s/783765C1-7B00-4EE6-9101-62BBBF7EDC11_zpsscjsvihf.jpg.html)

During my 83-84 tour with the 36th Tactical Fighter Squadron, aka "The Fantastic Flying Fiends".  This was perhaps the most amazing flying environment on the planet.   :x

(http://i906.photobucket.com/albums/ac270/puma44/F-4s/4A66D42C-3E3F-4DFE-A236-925A7ABFDF37_zpspcmoromz.jpg) (http://s906.photobucket.com/user/puma44/media/F-4s/4A66D42C-3E3F-4DFE-A236-925A7ABFDF37_zpspcmoromz.jpg.html)

An opportunity to pet a defector's MIG that had been flown around the various fighter bases in the ROK for examination.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: icepac on January 30, 2017, 05:03:22 PM
Marines also flew skyraiders.

Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 05:17:32 PM
     Man those Koreans did wild shark's mouths <and hats too!>.  I was in
the 339th AMU aka the "Fighting Dragons", then was renamed to the 69th
"Licking Lizards"  to bring us in line with the 68th and the 70th.

     After we had a few birds deployed to ROK, they came back with coolest
shark's mouths, then some 23rd weenies from England AFB in La cried about it
because they were Flying Tigers from WWII.  Yeah, yeah...get off my base!  :banana:

      I'm not sure it was true, but they claimed they were the only unit in
the continental US allowed to have the shark teeth.  They look stupid on an
A-10 anyway  :rofl

     Joe Cool after school..F4 with shark teeth.
(http://farm2.static.flickr.com/1599/24852605130_940067f3ff.jpg)

      Goofy looking fighter wannabe  :O
(http://www.dcmi.com/englandafb/images/A-10.jpg)

     I actually like the A-10, when they weren't giving us tude :airplane:
In fact, when I got out, it used to drive me crazy listening to the Canadair
Challengers start up.  Their CF-34s sounded just like the TF-34s on the
Warthog.  Bom...Bom...Bom...Ptooooooooo o   :headscratch:
     
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 05:32:56 PM
Marines also flew skyraiders.

     I know they hate to admit it, but technically attached to
Naval Aviation, no?  :P
     Know what I like best about Marine aviators?  They're very
fun to watch because they don't know what airplanes can't
do  :rofl
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 06:37:16 PM
http://s906.photobucket.com/user/puma44/media/F-4s/MePhantomandPhtogr.jpg.html

Me on the left taking an Air Force photographer on an "incentive" ride.  We put the Rhino through the wringer.  He did really well and didn't spill anything on himself or my jet, in spite of looking through his camera for much of the sortie.

http://s906.photobucket.com/user/puma44/media/F-4s/783765C1-7B00-4EE6-9101-62BBBF7EDC11_zpsscjsvihf.jpg.html
During my 83-84 tour with the 36th Tactical Fighter Squadron, aka "The Fantastic Flying Fiends".  This was perhaps the most amazing flying environment on the planet.   :x

http://s906.photobucket.com/user/puma44/media/F-4s/4A66D42C-3E3F-4DFE-A236-925A7ABFDF37_zpspcmoromz.jpg.html
An opportunity to pet a defector's MIG that had been flown around the various fighter bases in the ROK for examination.

Check you out!!!    Right on!!!   :rock
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 06:39:36 PM
     I know they hate to admit it, but technically attached to
Naval Aviation, no?  :P
     Know what I like best about Marine aviators?  They're very
fun to watch because they don't know what airplanes can't
do  :rofl

My buddy who was the Viper FW guy had a great story about a Marine Hornet driver they had attached on an exchange tour to his squadron.    Somehow a canopy malfunctioned and closed on his helmet which was hanging on the sill, destroying said helmet.    The jarhead was undeterred.   He made the comment (appropriately laced with a few nonchalant F-bombs) that he could still fly if someone would just find him some duct tape so he could put on his oxygen mask.      :rofl
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Arlo on January 30, 2017, 06:42:00 PM
     I know they hate to admit it, but technically attached to
Naval Aviation, no?  :P
     Know what I like best about Marine aviators?  They're very
fun to watch because they don't know what airplanes can't
do  :rofl

All Marine Corps aviation is part of Naval aviation.  :D
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rich46yo on January 30, 2017, 07:14:51 PM
All those pictures I had of F4's from my day? I lent them to a friend who was going home on leave, hundreds of them, cause he wanted to show his friends, and he ended up going AWOL. I never saw him, or them, again.

Heres a picture of when we were parked at the end of the main runway watching Rhinos, tankers, choppers, spy planes, all coming in a day or two after the embassy was over ran in Tehran in Nov. '77. Carter put us on a war footing but we never went.

(http://i478.photobucket.com/albums/rr149/Rich46yo/incirlick-1%20copy_zpsneoza9sl.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Vraciu on January 30, 2017, 08:50:50 PM
Nice pics, guys.   :aok
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rino on January 30, 2017, 09:57:51 PM
All those pictures I had of F4's from my day? I lent them to a friend who was going home on leave, hundreds of them, cause he wanted to show his friends, and he ended up going AWOL. I never saw him, or them, again.

Heres a picture of when we were parked at the end of the main runway watching Rhinos, tankers, choppers, spy planes, all coming in a day or two after the embassy was over ran in Tehran in Nov. '77. Carter put us on a war footing but we never went.

(http://i478.photobucket.com/albums/rr149/Rich46yo/incirlick-1%20copy_zpsneoza9sl.jpg)

     I had a similar experience, except my photos got lost during a move.
On the plus side, at the Carolinas Aviation Museum here in Charlotte they
just got one of the Op Eagle Claw C-130s...sitting outside on the ramp.

http://www.carolinasaviation.org/military/mc-130-hercules (http://www.carolinasaviation.org/military/mc-130-hercules)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 30, 2017, 10:25:15 PM
All those pictures I had of F4's from my day? I lent them to a friend who was going home on leave, hundreds of them, cause he wanted to show his friends, and he ended up going AWOL. I never saw him, or them, again.

Heres a picture of when we were parked at the end of the main runway watching Rhinos, tankers, choppers, spy planes, all coming in a day or two after the embassy was over ran in Tehran in Nov. '77. Carter put us on a war footing but we never went.

(http://i478.photobucket.com/albums/rr149/Rich46yo/incirlick-1%20copy_zpsneoza9sl.jpg)

That's a real crying shame!
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rich46yo on January 31, 2017, 02:16:49 PM
And 38 years later on the very last day I carried arms to protect others. Got a little old eh?
(http://i478.photobucket.com/albums/rr149/Rich46yo/retire-1_zpswfanm3yb.jpg)
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on January 31, 2017, 05:35:13 PM
And 38 years later on the very last day I carried arms to protect others. Got a little old eh?
(http://i478.photobucket.com/albums/rr149/Rich46yo/retire-1_zpswfanm3yb.jpg)

Thanks for your service, TWICE, Rich!  :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rich46yo on January 31, 2017, 06:18:11 PM
Thank you.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on February 01, 2017, 09:07:53 PM
Gman, earlier you asked about the splitter in the front of the F-106.  This just popped up on a a feed that I watch.  It provides a good visual of what I was explaining.


(http://i906.photobucket.com/albums/ac270/puma44/F-106s/9D0C82E7-25FC-43CF-9D00-F4B94F3E1B23_zpsqspp3sdv.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/9D0C82E7-25FC-43CF-9D00-F4B94F3E1B23_zpsqspp3sdv.jpg.html)

Here's a good perspective of the cockpit view.

(http://i906.photobucket.com/albums/ac270/puma44/F-106s/F42A46D5-020F-4C60-AEDE-A0A441667E34_zpsclohnd2f.jpg) (http://s906.photobucket.com/user/puma44/media/F-106s/F42A46D5-020F-4C60-AEDE-A0A441667E34_zpsclohnd2f.jpg.html)

No bump intended, just adding to the previous explanation.    :salute
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Devil 505 on February 01, 2017, 09:30:45 PM
Good stuff Puma. I remember when I was in middle school taking a tour of Otis AFB and seeing their old 106 simulator pit in the museum there, I was like "how the hell do they see out of this thing?"
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on February 01, 2017, 10:55:20 PM
Thanks!  The Six had a lot better vis from the cockpit than the pictures show. 
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Shuffler on February 03, 2017, 01:25:05 PM
I nominate this for TOTM (Thread Of The Month)  January 2017
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on February 03, 2017, 01:32:37 PM
I nominate this for TOTM (Thread Of The Month)  January 2017

Cool! Is there a prize? 😉
Title: Re: Flight characteristics of the F-4 Phantom
Post by: DaveBB on February 03, 2017, 03:45:25 PM
Cool! Is there a prize? 😉

Yeah, for me.   :D
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Gman on February 03, 2017, 04:44:11 PM
Thanks Puma, great stuff, what a good thread this has turned out to be for info.

Rich46yo - congrats on making it to retirement, and for all your years of service to the people of Chicago and the USA.  Great pic.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Rich46yo on February 04, 2017, 12:23:42 PM
Thanks Gman. Its a big relief actually to know I'll never have to make those kinds of decisions again.
Title: Re: Flight characteristics of the F-4 Phantom
Post by: PR3D4TOR on March 13, 2017, 07:43:50 AM
Last flight of the QF-4 in case you missed it:



https://www.youtube.com/watch?v=4LSKE2lU0Lk
Title: Re: Flight characteristics of the F-4 Phantom
Post by: Puma44 on March 13, 2017, 09:37:32 AM
A sad day indeed for those of us who flew, maintained, and were fanatics about the Phantom. Thanks for posting!  :aok

(http://i906.photobucket.com/albums/ac270/puma44/F-4s/f4lowlevel.jpg) (http://s906.photobucket.com/user/puma44/media/F-4s/f4lowlevel.jpg.html)