Aces High Bulletin Board
General Forums => Aces High General Discussion => Topic started by: mussie on June 22, 2007, 07:49:02 PM
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Hey ppl
My 7 year old son just asked me how long the takeoff run for an SR-71 was (he is only 7 so i thought it was a cool question for him to ask).
I have Googled and searched the net for the answer, but I cant find it even in a pilots manual I found online.
Can anyone here tell me what it is, or perhaps some of you RL Pilots and Ground Crew could give me an estimate.
Thanks
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http://www.sr-71.org/blackbird/manual/
have fun looking through that ;)
also:
http://letectvi.xf.cz/enu/lockheed-sr-71-blackbird
field takeoff distance: 5,413 feet
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Great question. Just spent 20min looking myself and came up with nada.
Surely SOMEBODY here knows this one...
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Originally posted by WMLute
Great question. Just spent 20min looking myself and came up with nada.
Surely SOMEBODY here knows this one...
I'll quote myself just to be sure...
Originally posted by JB73
also:
http://letectvi.xf.cz/enu/lockheed-sr-71-blackbird
field takeoff distance: 5,413 feet
;) :D
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i lol'd :)
Hey 73, i'm flying in next Wednesday (27th) for a week and a half. Planning on seeing a few bands Thursday night and more than likely Tool on the 4th... you heading to the fest at all? We should hook up for drunken shenanigans.
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Originally posted by Octavius
i lol'd :)
Hey 73, i'm flying in next Wednesday (27th) for a week and a half. Planning on seeing a few bands Thursday night and more than likely Tool on the 4th... you heading to the fest at all? We should hook up for drunken shenanigans.
sure!
I don't have plans yet, new job and all no vacation days, but I do have some walking around money ;)
email me mustaine at wi . rr . com
I'll give Steve a call too if thats cool
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Mussie....I used to talk with a SR71 technician regulary at one time. While there was a lot he couldnt talk about he gave me a few stories. I found out that the altitude records and speed records were a joke. The national record is by my reasoning 300-400mph less than the actual top speed. Even today the way they talk its easy to tell the records were BS. The SR-71 was also the first true stealth airplane and the most technologically advanced bird for its time.
Excuse me while I go throw this tissue paper away.:D
CFYA
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oh yeah... edit your post AFTER I post....
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Originally posted by WMLute
oh yeah... edit your post AFTER I post....
ummm....
EDIT @ 8:19 PM, literally 2 minutes, but more like 65 seconds after the post...
your reply 8:34...
I was watching the thread in real time too, hoping for a "wtg" with the pilot manual link I found. :D
:p on you :D :aok
oh yeah I edited this post for typos 2 times... yet before a minute
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Originally posted by CFYA
Mussie....I used to talk with a SR71 technician regulary at one time. While there was a lot he couldnt talk about he gave me a few stories. I found out that the altitude records and speed records were a joke. The national record is by my reasoning 300-400mph less than the actual top speed. Even today the way they talk its easy to tell the records were BS. The SR-71 was also the first true stealth airplane and the most technologically advanced bird for its time.
Excuse me while I go throw this tissue paper away.:D
CFYA
Am I correct in understanding the plane is MORE kick-prettythang than even the "official" reports say?
or are you saying the time they clocked it from LA to NY it did not make that time and it was slower?
I am a bit confused
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Originally posted by JB73
ummm....
EDIT @ 8:19 PM, literally 2 minutes, but more like 65 seconds after the post...
your reply 8:34...
I was watching the thread in real time too, hoping for a "wtg" with the pilot manual link I found. :D
:p on you :D :aok
oh yeah I edited this post for typos 2 times... yet before a minute
U was editing as I was searching.
No worries.
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I am saying the plane is faster than the national records say it is by at least 300-400mph.
CFYA
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sounds about right. they just accelerate to evade G2A missiles don't they?
pretty awesome bird.
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We are lucky enough to have one on display!
(http://img.photobucket.com/albums/v284/alizinat/100_2515.jpg)
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Kind of an ugly platypus looking thing from that view...
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Originally posted by nirvana
Kind of an ugly platypus looking thing from that view...
That's no way to talk about someone's kid! :eek:
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Those takeoff distances are not adjusted for Density Altitude I bet. I have seen a SR take 8000 to take off in Arizona. ITs all in the Temps folks.
The JUG man
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Originally posted by miraj
We are lucky enough to have one on display!
(http://img.photobucket.com/albums/v284/alizinat/100_2515.jpg)
Wow I never realized how such speed affected the Pilot's height... or does having all that adrenalin stunt your growth? :D
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tell your son about how the gas tanks are designed, he'll get a kick out of that.
all those who know about the SR-71's tanks are most likely very impressed by the engineering behind it... i know i still am :)
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Major Yes they did accelerate to evade SAMs. They couldnt however out run them. The state of the art missiles back then could reach Mach 4 while the SR-71 had a top speed of 3.5 or so. What really occured is the guidance computers could not adjust to the sudden increase of speed. At that alt the SR-71 could still gain speed in a matter of seconds throwing off the intercept point. I have read that with the SR-71's speed SAM sites had only 30 seconds of a launch commit window. That is to say only 30 seconds of time to track, identify, and launch before the missiles would not be able to intercept before reaching maximum range.
JE you have peaked my curosity. Will you elaborate or post links? I have spent hours searching for technical reports on this aircraft. I know that they are designed to leak at ambient temperature. Once flight temp is reached however they expand and the joints sealed.
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the plane gets so hot from travelling so fast that they designed the whole plane to be too small and not fit properly. because of it, fuel leaks out the tanks and there are huge gaps in the fuselage. once it gets going though, the parts expand and end up fitting perfectly
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Originally posted by CFYA
Mussie....I used to talk with a SR71 technician regulary at one time. While there was a lot he couldnt talk about he gave me a few stories. I found out that the altitude records and speed records were a joke. The national record is by my reasoning 300-400mph less than the actual top speed. Even today the way they talk its easy to tell the records were BS. The SR-71 was also the first true stealth airplane and the most technologically advanced bird for its time.
Excuse me while I go throw this tissue paper away.:D
CFYA
This from the guy who thinks the US have shot down incoming ICBM's.
:noid
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he knows because of his CIA and Scorpion background.. :noid
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Vulcan........nice troll but aint worth it my friend.
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On other thing......wasnt this the first aircraft to use titanium as a major percentage of build material? Specifically 6AL-4V?
I have a picture somewhere of a YF-12 with buckets everywhere with JP-8(?) fuel dripping. Its a wonder the whole thing doesnt go up in smoke on the ground. They use tetraborane to light the engines (ignites spontaneously in air). Lot of neat stuff on the fuel side of that plane.
FYI-......YF-12 was CIA version of SR-71.
CFYA
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Originally posted by Major Biggles
the plane gets so hot from travelling so fast that they designed the whole plane to be too small and not fit properly. because of it, fuel leaks out the tanks and there are huge gaps in the fuselage. once it gets going though, the parts expand and end up fitting perfectly
exactly what Biggles said, the designers for that plane were brilliant to determine the exact measurement, up to a millimeter on how the metal would expand when reaching high temperatures
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LOL He said millimeter.......some one tell him this is America.....we dont need no stinking metric units!
(In the 60s anyway):D:rofl
CFYA
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During some alerts my dad pulled in a Thud he spoke about seeing SR's taxi by with fuel pouring out of the wings. He was not real fond of getting to takeoff in full burner behind the fuel trail the SR's left on the runway. I guess I would not either.
After my dad retired he went to the airlines and one of his FE's was a SR pilot. My dad tried to pry out of him some tech specs but he was lips were sealed. Information on the exact specs are sketchy due to the fact some of the technology stems from the SR flights. Shows how a few guys with slide rules can make a plane state of the art and undeniably before its time. Simply amazing
Jugman
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there's no millimeters in America anymore? i coulda sworn there are millimeter measurements on rulers you buy at the Longs or Rite-Aid or whatever
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Actually, The A-11 and A-12 were the CIA birds. The YF-12A was an prototype interceptor version for the USAF.
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Originally posted by JE.
there's no millimeters in America anymore? i coulda sworn there are millimeter measurements on rulers you buy at the Longs or Rite-Aid or whatever
Nope, they got rid of millimeters right before those Mars Landers went missing.
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A good little SR-71 speed check story.
In his book, Sled Driver, SR-71 Blackbird pilot Brian Shul writes: "I will always remember a certain radio exchange that occurred one day as Walt
(my back-seater) and I were screaming across Southern California 13 miles high. We were monitoring various radio transmissions from other aircraft
as we entered Los Angeles airspace. Though they didn't really control us, they did monitor our movement across their scope.
I heard a Cessna ask for a readout of its ground speed."90 knots" Center replied. Moments later, a Twin Beech required the same. "120 knots," Center
answered. We weren't the only ones proud of our ground speed that day as almost instantly an F-18 smugly transmitted, "Ah, Center, Dusty 52 requests
ground speed readout." There was a slight pause, then the response, "525 knots on the ground, Dusty." Another silent pause.
As I was thinking to myself how ripe a situation this was, I heard a familiar click of a radio transmission coming from my back-seater. It was at that
precise moment I realized Walt and I had become a real crew, for we were both thinking in unison. "Center, Aspen 20, you got a ground speed readout
for us?" There was a longer than normal pause.... "Aspen, I show 1,742 knots" (That's about 2004.658 mph for those who don't know)
No further inquiries were heard on that frequency.
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I was joking about the whole millimeters thing.........making fun of the fact that America is one of the last nations to adopt the metric system.
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Takes up a hundred miles or so to do a 180.
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lol i gotcha, I got really confused.. thought the world was turnin upside down on me haha
!
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Yeah I heard that one Miraj. I dad told me that one. His experience was when he was on a trip from LA to Dallas and they crossed 100 miles south of the Skunk works. He swore he saw a SR on his right wing and climbing. He called ATC and queried traffic. The controller said that that traffic would not be a factor because he was 15,000 feet above him. In 2 minutes that is amazing.
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You can tell your son that the former CIA guy said:
Take off distance: A long way.
Cruising Height: Very High.
Cruising Speed: Very Fast.
Max Speed: Really Fast.
Landing Distance: Longer than the take off distance.
Pictures it took: Priceless ;-)
Softail
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Originally posted by CFYA
I was joking about the whole millimeters thing.........making fun of the fact that America is one of the last nations to adopt the metric system.
Why mess with a system that works?
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Originally posted by Softail
Why mess with a system that works?
Because ours works better :lol
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Originally posted by mussie
MUSSIE
Grounded Indefinitely
Mate... grounded indefinitely?
What's the go!?
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Originally posted by CFYA
On other thing......wasnt this the first aircraft to use titanium as a major percentage of build material? Specifically 6AL-4V?
I have a picture somewhere of a YF-12 with buckets everywhere with JP-8(?) fuel dripping. Its a wonder the whole thing doesnt go up in smoke on the ground. They use tetraborane to light the engines (ignites spontaneously in air). Lot of neat stuff on the fuel side of that plane.
FYI-......YF-12 was CIA version of SR-71.
CFYA
Also, the US procured A LOT of the said Titanium, from "false companies" that the CIA Fronted to Import the Titanium into the US. I've read over 100+ companies were falsely created for this purpose.
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Originally posted by Xasthur
Because ours works better :lol
Well at least the Brits and US still use Miles Per Hour instead of Kilometers. So we aren't the only hold out :D The US and UK vs the Metric World. Bring it on!!! :t
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I was an SR-71 Crew Chief for 4 years, stationed at Beale in the mid 80's. The Aircraft would use up about half of the runway there at Beale to take off, but of course that depended on the takeoff weight, and the density altitude. Figure on about 5000 feet on average.
The fuel was JP-7. We called it "essence of seven" since we wore it all the time from being dripped on. The fuel has such a high flash point that a match dropped into a bucket of JP-7 would just go out. Triethyl Borane (TEB) was used to ignite the engines. Each engine carried 16 "shots" of TEB, and placing the throttles into full afterburner would also dump a shot into the afterburner section. We would run look at the TEB counters after a flight to see how many times they went super sonic, or at least that is what we thought we were seeing. We would also sneek a peek at the map strips that were loaded into the cockpits just before launch to get an idea of where our airplane was going.
An average training flight would leave Beale with 45000 lbs of fuel (6.57 lbs to the gallon), and immediately hit the tanker somewhere over Nevada. After a top off, they would accelerate south and turn somewhere around San Diego. They would then fly north to Seattle, then turn back to Beale. this typical flight would be 2 hours 45 minutes total. In that flight, they would hit the tanker twice, or occasionally three times. Of course, they had other training routes, and we did fly HHQ "clipper" missions out of Beale to places near Florida...
It was quite an airplane, but one may be surprised at how low tech it realy was. Considering that they were designed in the late 50's and built in the early 60's, it was way ahead of its time. It was a maintenance nightmare compared to other airplanes in the USAF inventory, requiring an average of 2-3 days between flights to get them back to "Fully Mission Capable" status.
Sorry... I get to rambling when I start talking about the blackbird.
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Originally posted by Major Biggles
sounds about right. they just accelerate to evade G2A missiles don't they?
Ahhhh.....no.
A lil background...A buddy swapped me a walk around of the Habu if I'd take him up in the cockpit of our 747 while we were doing some Okinawa - Clark runs. He was the spy and sat in the back seat. He was also on the plane that N. Korea fired a missle at. That was the official word. My bud said they actually had two missels fired at them. They have to turn to avoid then since they are fired almost 100 miles before they arrive overhead. After the turn they are long gone.
We had the priviledge of watching the runup and launch of a mission while done there on the island. We led the Habu out to the end of the runway then ran down the runway to check for FOD. We pulled off the runway onto the grass at his rotation point. The commander told me to get my camera out for the pics since its was gonna be gone in about 20 seconds. He rotated about 85 feet in front of me and was out of sight and sound inside of 30 seconds.
How far down the runway? About half way...:) They are very light as they leak fuel on the ground and take on gas from a tanker after they got airborne.
I got the whole tour and it's still the coolest snake around. :)
Ren
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parents were stationed at kadena, okinawa when i was a kid, 82-85. we used to watch the Habu take off alot. awesome sight.
NOT
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I was stationed at Beale as a Security Policeman(LE) from 1974 to 1976. I saw many flights of the SR71. It was an amazing plane. I saw it take off at dusk a few times. The blue flames with shock rings streaking out of the engine were something to see. It would climb out of sight in about 30 seconds. You could see it until it cut the burners off.
-SR-:aok