Aces High Bulletin Board

General Forums => Aircraft and Vehicles => Topic started by: Stegahorse on April 13, 2010, 04:04:55 PM

Title: P-47-D25-29 Fillet
Post by: Stegahorse on April 13, 2010, 04:04:55 PM
http://www.facebook.com/home.php?#!/photo.php?pid=264407&id=100000075846296 (http://www.facebook.com/home.php?#!/photo.php?pid=264407&id=100000075846296)
This is a picture of the P47-D25 at Lackland AFG that is the memorial for Gen. Gabretski. Notice the fillet in front of the vertical stabilizer. this was added after the fastback was removed and the bubble canopy installed. The removal of the fastback part of the fuselaage resulted in a severe Yaw problem which the fillet fixed. it may seem small, but it is an important feature of the D-25to29 series Thunderbolt. Please add it to ours.
Title: Re: P-47-D25-29 Fillet
Post by: fuzeman on April 13, 2010, 04:12:50 PM
I get a "You must log in to see this page."  I'll die in peace if I never log into Facebook.
Title: Re: P-47-D25-29 Fillet
Post by: uptown on April 13, 2010, 04:14:29 PM
same here


I guess Fuzeman ain't going to be my MySpace buddy now  :cry
Title: Re: P-47-D25-29 Fillet
Post by: Stegahorse on April 13, 2010, 04:15:29 PM
suggest another place to post it please.
 :bolt:
Title: Re: P-47-D25-29 Fillet
Post by: uptown on April 13, 2010, 04:16:49 PM
Photobucket
Title: Re: P-47-D25-29 Fillet
Post by: Stegahorse on April 13, 2010, 04:33:46 PM
Try this

 http://s1002.photobucket.com/albums/af142/Stegahorse/AH/?action=view&current=GabbyMem.jpg (http://s1002.photobucket.com/albums/af142/Stegahorse/AH/?action=view&current=GabbyMem.jpg)
Title: Re: P-47-D25-29 Fillet
Post by: uptown on April 13, 2010, 04:37:19 PM
(http://i279.photobucket.com/albums/kk121/TheAmish/Terminating.gif)


That is interesting. What was the purpose of that i wonder.
Title: Re: P-47-D25-29 Fillet
Post by: Guppy35 on April 13, 2010, 04:39:34 PM
You do understand that the P47 in your photo is a P47N right?  It just happens to be painted as Gabreski's bird which didn't have the fillet in reality.
Title: Re: P-47-D25-29 Fillet
Post by: Stegahorse on April 13, 2010, 04:42:00 PM
The plaque in front of it says P-47D-25 , Gabretski Memorial. :rofl
It sits on the Lackland AFB on the edge of the parade grounds, My Son pointed it out to me at his Graduation Ceremony. :rock
Title: Re: P-47-D25-29 Fillet
Post by: uptown on April 13, 2010, 04:42:08 PM
Our N models in the game doesn't have this fillet......do they?
Title: Re: P-47-D25-29 Fillet
Post by: Stegahorse on April 13, 2010, 04:46:15 PM
D25 not N or M
Title: Re: P-47-D25-29 Fillet
Post by: Guppy35 on April 13, 2010, 05:11:51 PM
The plaque in front of it says P-47D-25 , Gabretski Memorial. :rofl
It sits on the Lackland AFB on the edge of the parade grounds, My Son pointed it out to me at his Graduation Ceremony. :rock
Gabreski flew a D-25.  The memorial is a P47N painted like Gabreski's D-25.  Look at the wing shape as well as the shape of the fillet.  That's all P47N

The N model in game has the fillet as does the D-40 

Go to the 56th Gallery on Little Friends and note that many of the P47Ms also do not have the fillet. 

http://www.littlefriends.co.uk/gallery.php?Group=56&Style=item&origStyle=list&Item=299&Temp=2295&searchString=
Title: Re: P-47-D25-29 Fillet
Post by: MiloMorai on April 13, 2010, 05:13:41 PM
The plaque in front of it says P-47D-25 , Gabretski Memorial. :rofl
It sits on the Lackland AFB on the edge of the parade grounds, My Son pointed it out to me at his Graduation Ceremony. :rock

"This P-47N is painted in colors representing the P-47D flown by Lt. Col. Francis S. Gabreski while leader of the 61st Fighter Squadron 56th Fighter Group, 8th Air Force.  The markings on the plane show the "D" Day invasion stripes and the 28 confirmed air victories made by Lt. Col. Gabreski."

http://www.waymarking.com/waymarks/WM3CTA_P_47_Thunderbolt_Lackland_AFB_San_Antonio_Texas
Title: Re: P-47-D25-29 Fillet
Post by: uptown on April 13, 2010, 05:17:23 PM
Forgive my ignorance, but what is the purpose of the fillet? I believe the 51D also has this too.
Title: Re: P-47-D25-29 Fillet
Post by: Tec on April 13, 2010, 05:48:35 PM
Longitudinal stability.
Title: Re: P-47-D25-29 Fillet
Post by: RTHolmes on April 13, 2010, 06:02:25 PM
yup thats why slow D25 = lotsa yaw. its ok though, at d300 the pendulum effect is only about the wingspan of a fighter :D
Title: Re: P-47-D25-29 Fillet
Post by: Krusty on April 13, 2010, 07:02:58 PM
It's nothing compared to what it used to be. Back in AH1 you could fly an early D-11 and notice the stability compared to a D-40. Same goes for P-51B and P-51D. You used to spin into your tight turns MUCH more easily in the D pony than the B because of the razorback-added-stability.

Sadly, this and a few other things seriously seem to be lacking in current AH2. I don't honestly recall WHEN they went away, but it was AH2 or sometime in the early revisions of AH2 that it happened. The F4u became an uber spit, basically, and lost its torque instability, and some other issues similar to the P51/P47 lack of spins.
Title: Re: P-47-D25-29 Fillet
Post by: Stegahorse on April 13, 2010, 07:07:27 PM
The N has the Squared off wings. The D25 does not. The N, M and D40 have the fillet. Our D25 does not as it should. As Stated Above Gabretski did not transfer to the Ms or Ns. The Air Force museum says the Memorial is a D25. :x
Title: Re: P-47-D25-29 Fillet
Post by: Ack-Ack on April 13, 2010, 07:32:55 PM
From the P-47D-30-RE production lots onward, a dorsal fin was fitted just ahead of the
rudder.


The N has the Squared off wings. The D25 does not. The N, M and D40 have the fillet. Our D25 does not as it should. As Stated Above Gabretski did not transfer to the Ms or Ns. The Air Force museum says the Memorial is a D25. :x

The plaque clearly says it's an N model painted in the colors to represent Grabreski's Jug.

(http://img.groundspeak.com/waymarking/large/5122b926-21b4-4ff4-9949-dccf254ecea3.jpg)


ack-ack
Title: Re: P-47-D25-29 Fillet
Post by: bozon on April 14, 2010, 02:59:14 AM
"This P-47N is painted in colors representing the P-47D flown by Lt. Col. Francis S. Gabreski while leader of the 61st Fighter Squadron 56th Fighter Group, 8th Air Force.  The markings on the plane show the "D" Day invasion stripes and the 28 confirmed air victories made by Lt. Col. Gabreski."
I am sure that many if not most of those 28 kills were in Razorbacks. Those were the real fighter jugs.
Title: Re: P-47-D25-29 Fillet
Post by: Guppy35 on April 14, 2010, 10:58:57 PM
From the P-47D-30-RE production lots onward, a dorsal fin was fitted just ahead of the
rudder.


The plaque clearly says it's an N model painted in the colors to represent Grabreski's Jug.

(http://img.groundspeak.com/waymarking/large/5122b926-21b4-4ff4-9949-dccf254ecea3.jpg)


ack-ack

Sometimes I feel like I'm talking to myself with this stuff :)

Title: Re: P-47-D25-29 Fillet
Post by: Ack-Ack on April 14, 2010, 11:11:16 PM
Sometimes I feel like I'm talking to myself with this stuff :)



Especially when the plaque says it's a P-47N painted to look like Gabreski's P-47D.   But I'm still envious of Stegahorse because he got to see it in person and I can only see it in a picture.


ack-ack
Title: Re: P-47-D25-29 Fillet
Post by: Stegahorse on April 15, 2010, 11:57:46 AM
 :furiousOK, OK! I concede the point, but the
D25 was the first to have the fillet.
All our favorite American Iron is on Lackland AFB.
Most of them are around the parade grounds!
Title: Re: P-47-D25-29 Fillet
Post by: Megalodon on April 15, 2010, 12:08:09 PM
Forgive my ignorance, but what is the purpose of the fillet? I believe the 51D also has this too.

Yes the P-51D recieved the fin on the -10 model -1's and -5's didnt have them and it was for directional stability. We have a P-51D-30 in the game.
Title: Re: P-47-D25-29 Fillet
Post by: Ack-Ack on April 15, 2010, 12:08:35 PM
:furiousOK, OK! I concede the point, but the
D25 was the first to have the fillet.
All our favorite American Iron is on Lackland AFB.
Most of them are around the parade grounds!

No it wasn't.  From the  P-47D-30-RE onward, the dorsal fin was added to the Jug, not the D-25.


ack-ack
Title: Re: P-47-D25-29 Fillet
Post by: Guppy35 on April 15, 2010, 12:22:13 PM
Can't be any more clear then this.  Gabby's bird, bellied in the day he went down.  NO FILLET!

(http://gallery.kitmaker.net/data/20616/Gabby_Bellylanded.jpg)
Title: Re: P-47-D25-29 Fillet
Post by: MiloMorai on April 15, 2010, 03:02:39 PM
Yes the P-51D recieved the fin on the -10 model -1's and -5's didnt have them and it was for directional stability. We have a P-51D-30 in the game.

Earlier models of the 51D got fin fillet kits. Even the razorbacks.
Title: Re: P-47-D25-29 Fillet
Post by: Krusty on April 15, 2010, 03:07:54 PM
Earlier models of the 51D got fin fillet kits. Even the razorbacks.

And many did not.

(http://www.aircrewremembrancesociety.com/usaaf1944/christian_files/col-christian-361fg-p-51d-44-13410-002820029.jpg)

Note the mixed formation? P-51D without fillet, P-51D with fillet, P-51B without fillet. They often just flew the plane until it was replaced, and P-51B/Cs were flying alongside Ds all the way to the end of the war, just about.

EDIT:

don't know if that image likes hotlinking.. Here's a different one:

(http://www.bermuda-triangle.org/assets/images/P-51D.jpg)
Title: Re: P-47-D25-29 Fillet
Post by: MiloMorai on April 15, 2010, 03:51:19 PM
Thanks Krusty. Guess I should have written 'were made available for retro fitting to earlier models'.

The Ds are P-51D-5-NA.
Title: Re: P-47-D25-29 Fillet
Post by: Megalodon on April 15, 2010, 07:37:49 PM
No it wasn't.  From the  P-47D-30-RE onward, the dorsal fin was added to the Jug, not the D-25.


ack-ack

Actually it was the D-40 and kits were made for earlier models to be retrofitted in the field. Bubble-tops started with the D-25.

"The D-25 was followed by similar bubble-top variants, including the P47 D-26, D-27, D-28 and D-30. Improvements added in this series included engine refinements, more internal fuel capacity, and the addition of dive recovery flaps. Cutting down the rear fuselage to accommodate the bubble canopy produced yaw instability, and the P-47D-40 introduced a dorsal fin extension in the form of a narrow triangle running from the vertical tailplane to the radio aerial. The fin fillet was retrofitted in the field to earlier P47 D bubble-top variants. The P-47D-40 also featured provisions for ten "zero length" stub launchers for 5 inch (127 mm) High Velocity Aerial Rockets (HVARs), as well as the new K-14 computing gunsight."

Title: Re: P-47-D25-29 Fillet
Post by: Ack-Ack on April 15, 2010, 08:42:52 PM
The D-30 was the first production model to roll out with the dorsal fin.  Whether or not some of the D-25s were retrofitted on the field to have them still doesn't change the fact that rolled out of the factory, the D-25 did not have the dorsal fin.

Another example, some P-51B/Cs incorporated some of the improvements of the P-51D model, namely the repositioning of the machine guns in the wing to fix the jamming issues with the B/C models.  These changes were done on the field and not rolled out of the factory this way.  Same with the dorsal fin on the D-25 Jug.


ack-ack
Title: Re: P-47-D25-29 Fillet
Post by: lyric1 on April 15, 2010, 08:55:39 PM
Sometimes I feel like I'm talking to myself with this stuff :)


Did any of you hear something?? Never mind guess it was not relevant.




















Sorry about that had to go there.
Title: Re: P-47-D25-29 Fillet
Post by: Wmaker on April 16, 2010, 07:40:02 AM
Longitudinal stability.

Directional stability, actually.
Title: Re: P-47-D25-29 Fillet
Post by: FLS on April 16, 2010, 12:00:41 PM
Yaw stability if you want to get picky.  :old:
Title: Re: P-47-D25-29 Fillet
Post by: Wmaker on April 16, 2010, 04:12:38 PM
Yaw stability if you want to get picky.  :old:

Same difference.
Title: Re: P-47-D25-29 Fillet
Post by: Megalodon on April 18, 2010, 09:55:48 AM
The D-30 was the first production model to roll out with the dorsal fin.  Whether or not some of the D-25s were retrofitted on the field to have them still doesn't change the fact that rolled out of the factory, the D-25 did not have the dorsal fin.

Another example, some P-51B/Cs incorporated some of the improvements of the P-51D model, namely the repositioning of the machine guns in the wing to fix the jamming issues with the B/C models.  These changes were done on the field and not rolled out of the factory this way.  Same with the dorsal fin on the D-25 Jug.


ack-ack

Like I said previous the D-40 was the first to come out with the fin from the factory. The D-30 had it incorporated/added to ..later.


Title: Re: P-47-D25-29 Fillet
Post by: Guppy35 on April 19, 2010, 12:55:32 AM
Like I said previous the D-40 was the first to come out with the fin from the factory. The D-30 had it incorporated/added to ..later.




I wonder if that's completely accurate.  Bodie's P47 'Bible" states that the D-40 was the first production run to all have the fin fillet added during production.   He also comments that 'if dorsal fins were introduced during this series, it had to be very late in the production run".  This was in reference to the D-28 Jug.  Clearly not all D-30s had the fillet, but I think it's closer to the truth that the dorsal fillet was introduced during the D-30 production run and was standardized by the D-40 run

I'm hard pressed not to go with Bodie.  Wonder where Widewing is for this one?
Title: Re: P-47-D25-29 Fillet
Post by: Ack-Ack on April 19, 2010, 01:07:02 AM
I wonder if that's completely accurate.  Bodie's P47 'Bible" states that the D-40 was the first production run to all have the fin fillet added during production.   He also comments that 'if dorsal fins were introduced during this series, it had to be very late in the production run".  This was in reference to the D-28 Jug.  Clearly not all D-30s had the fillet, but I think it's closer to the truth that the dorsal fillet was introduced during the D-30 production run and was standardized by the D-40 run

I'm hard pressed not to go with Bodie.  Wonder where Widewing is for this one?

I've been wondering the same thing, he hasn't been posting very often lately.  Maybe it's time we break out the Widewing signal.


ack-ack
Title: Re: P-47-D25-29 Fillet
Post by: Widewing on April 19, 2010, 07:35:20 PM
I've been wondering the same thing, he hasn't been posting very often lately.  Maybe it's time we break out the Widewing signal.


ack-ack

I've been insanely busy of late... I did find this thread tho..

The first version delivered from the factory with the dorsal fin was the D-40. However, most D-30s were retrofitted either before being shipped overseas, or after arriving during reassembly. You can find D-28s with the fin as well. I think that you'll find very few D-25s, D-26s and only slightly more D-27s so retrofitted. Largely due the time frame when retro kits were being distributed. Retrofits made in the field were usually carried out during major inspections or when tired fighters were sent for overhaul.


My regards,

Widewing
Title: Re: P-47-D25-29 Fillet
Post by: Megalodon on April 24, 2010, 12:00:47 PM
 :aok
Title: Re: P-47-D25-29 Fillet
Post by: bj229r on April 24, 2010, 04:26:11 PM
Can't be any more clear then this.  Gabby's bird, bellied in the day he went down.  NO FILLET!

(http://gallery.kitmaker.net/data/20616/Gabby_Bellylanded.jpg)
Wonder whether he was treated as a celeb or not by the Germans when they got him?
Title: Re: P-47-D25-29 Fillet
Post by: Seadog36 on April 27, 2010, 06:39:56 PM
Wonder whether he was treated as a celeb or not by the Germans when they got him?
In his biography he said that they were expecting him, as he was joining many other 56th officers like Hub Zemke and Jerry Johnson, in the POW camp(Stalag Luft I in Barth, Germany on the Baltic). He was supposed to go home the day of his last mission and bent his props strafing parked HE 111s. The camp  was abandoned by the guards (who tended to be old not fit for combat types) because of fear of the advancing Russians. Compared to German aces Gabby w his 34.5 confirmed was a pretty modest scorer but I'm sure they were glad to have him!