Aces High Bulletin Board
General Forums => Aircraft and Vehicles => Topic started by: wooly15 on January 29, 2008, 01:09:05 PM
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I did some Geo caching a few years ago in Hawaii to a supposed P-47 crash site, well that's what "they" said. Is there any way any of you can tell from what little was left of the engine is a PW-R-2800. Also, what is the part in the first pic? There was a piece of unpainted aluminum there, no markings though. Hard to tell if the paint weathered away or if it was truly unpainted. Sadly people have picked everything else away from the site. If you guys are ever in HI, its a good hike.
(http://[IMG]http://i67.photobucket.com/albums/h292/wooly15/p47_SC.jpg)[/IMG]
(http://[IMG]http://i67.photobucket.com/albums/h292/wooly15/p47_eng.jpg)[/IMG]
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First pic looks to be a supercharger.
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Or, more acurately, the turbine from the turbo-supercharger. The turbine was located towards the aft, ventral portion of the fuselage, below and behind the intercooler doors, with the turbine exhaust just in front of the tail wheel doors.
The engine is certainly a twin-row radial engine. You can see a small part of the exhaust manifold still attached to a cylinder head in the center bottom part of the engine picture. I believe that is the accesory housing that is on the right side of the engine. Don't know definitively its an R-2800, but it appears to be so.
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The picture was more focused on the cache (plastic jug on top of the engine) and not the engine itself. Thats why the whole engine isn't in view.
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Um. I live in Hawaii. By any chance is that in Manoa Valley? Ive heard of an aircraft wreck up the hill from my house, but its too nasty of a climb to go check out.
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Its actually starts in moanalua valley. You go in that neighborhod and all the way at the end there is a playground. In the back is where the trail starts. It was one helluva hike...around 10 miles one way. That was mostly up 1ft wide pig trails with 100ft drops on either side. Pretty cool view into kaneohe from on top of the cliff, you are right above the tunnel. Not for the faint of heart.
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Alright, Ill do a fly-over first this weekend to see if its anything I can handle. Thanks!
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Originally posted by Stoney74
Or, more acurately, the turbine from the turbo-supercharger. The turbine was located towards the aft, ventral portion of the fuselage, below and behind the intercooler doors, with the turbine exhaust just in front of the tail wheel doors.
What's shown in that first photo appears to be a supercharger turbine...not the turbocharger turbine that you're talking about. The supercharger is inside the engine case. I "think" the structure around what is shown in the photo is part of the engine case. I believe the turbocharge used on the Jug was basically the same one used on the B-17, B-24, P-38 and others. If so those blades are not the correct shape, they should be shorter and straighter.
The case looks like it could be a 2800.
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Originally posted by colmbo
What's shown in that first photo appears to be a supercharger turbine...not the turbocharger turbine that you're talking about. The supercharger is inside the engine case. I "think" the structure around what is shown in the photo is part of the engine case. I believe the turbocharge used on the Jug was basically the same one used on the B-17, B-24, P-38 and others. If so those blades are not the correct shape, they should be shorter and straighter.
The case looks like it could be a 2800.
Well sort of, as the supercharger casing is mounted on the rear of the engine casing.
http://www.nomeking.com/blr.htm
Notice the impeller.
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Originally posted by Serenity
Alright, Ill do a fly-over first this weekend to see if its anything I can handle. Thanks!
What do you fly? Military?
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Originally posted by wooly15
What do you fly? Military?
I wish, lol. Not old enough. I fly a Samba XXL light-sport/motorglider. It has an engine, cruises at 120 kts, but the FAA calls it a glider for some reason, so I can solo it even though im 15. I could jump in something heavier, a King Air or Cessna Caravan with an instructor (Dont know what the point of having him there is, he just talks on the phone the whole time...) but I think the Samba would be better for this. With full flaps, it stalls at around 20 kts, so I can get nice and slow following the trail. I posted a picture a LONG time ago, Ill see if I can dig another one up.
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Originally posted by Serenity
I wish, lol. Not old enough. I fly a Samba XXL light-sport/motorglider. It has an engine, cruises at 120 kts, but the FAA calls it a glider for some reason, so I can solo it even though im 15. I could jump in something heavier, a King Air or Cessna Caravan with an instructor (Dont know what the point of having him there is, he just talks on the phone the whole time...) but I think the Samba would be better for this. With full flaps, it stalls at around 20 kts, so I can get nice and slow following the trail. I posted a picture a LONG time ago, Ill see if I can dig another one up.
(http://a256.ac-images.myspacecdn.com/images01/94/l_180101a27ec9cf0818baad17f8a732d7.jpg)
(http://a756.ac-images.myspacecdn.com/images01/95/l_11c0d25d6c1842c03ad3660a8f28bfb3.jpg)
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Nice, I have never seen one. Is that at Dillingham near Kaena Point? I did alot of offroading at Peacock Flats that overlooks Dillingham and used to get buzzed by the gliders alot...pretty neat, never knew they were coming until they were 10 above your head.
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Serenity you're going to go fly around at low altitude looking for airplane parts and spotting trails to negotiate while next to a mountain?
Godspeed.
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Haha didn't think of that Golfer! Serenity, it's in a heavily wooded area so you probably wont see the wreckage. Here is a map and some more pics to help you find it. Thats my ugly mug on the trail. Also a little better pic on the engine.
http://maps.google.com/maps?f=q&hl=en&q=Moanalua+Valley+Park,+United+States&sll=46.920255,151.083984&sspn=42.469841,82.265625&ie=UTF8&cd=1&geocode=0,21.373920,-157.880145&ll=21.395381,-157.843666&spn=0.113001,0.160675&t=k&z=13&om=0
On the map, "A" is moanolua valley park and you hike to where the tunnel exits the mountain. The wreckage is actually at the base of the cliff that overlooks H3
(http://[IMG]http://i67.photobucket.com/albums/h292/wooly15/hill.jpg)[/IMG]
(http://i67.photobucket.com/albums/h292/wooly15/engine2.jpg)
(http://i67.photobucket.com/albums/h292/wooly15/view.jpg)
(http://[IMG]http://i67.photobucket.com/albums/h292/wooly15/h3_tunnel.jpg)[/IMG]
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Originally posted by MiloMorai
Well sort of, as the supercharger casing is mounted on the rear of the engine casing.
http://www.nomeking.com/blr.htm
Notice the impeller.
That could be part of the turbo supercharger that was in the back of the P-47s fusalage.
The engines supercharger housing looks more or less intact.
Great pics, thanks for sharing, do you have the higher res version, they would be cool desktop backgrounds.
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P-47 Supercharger Diagram (http://rwebs.net/avhistory/history/supercha.htm)
I could be wrong, but it looks like the turbine for the exhaust gas, not the compressor of the supercharger...
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Originally posted by Golfer
Serenity you're going to go fly around at low altitude looking for airplane parts and spotting trails to negotiate while next to a mountain?
Godspeed.
Im going to TRY, lol. But, im trained in gliders, out at dillingham, (Yes, thats dillingham) and as Wooley pointed out, we HUG that mountain for lift sometimes. Ive gotten maybe 10-15 off the treeline before, out at waiamea falls, but only on dead calm days. As I said, I will TRY this saturday. Ill have a photo-guy along for the ride so I can show you what I can see from the air.
Thanks for the pics wooley, thats a great help! Thats a brand new aircraft BTW. My dad and a couple others just bought it and are selling rides in it. Ive got about... 15 hours in it. Its not much, but its all ive had time for with school lately.
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wooly, next time bring a ruler along so you can it put in the pics.
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Godspeed kid. I hear crashing hurts a lot. In your case the good news is if you do it right it's only for an instant.
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Originally posted by Golfer
Godspeed kid. I hear crashing hurts a lot. In your case the good news is if you do it right it's only for an instant.
lol. The plan is to avoid the crash. Im smarter than to go in if conditions arent absolutely perfect. I dont expect to drop below the mountain top my first time in the area. But hey, on the bright side, the plane is fully ensured, and has a ballistic chute, so worts case scenario, I might just survive! lol.
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Originally posted by Stoney74
P-47 Supercharger Diagram (http://rwebs.net/avhistory/history/supercha.htm)
I could be wrong, but it looks like the turbine for the exhaust gas, not the compressor of the supercharger...
I'm an idiot. I was thinking of the "driven" turbine, not the compressor end.
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Originally posted by colmbo
I'm an idiot. I was thinking of the "driven" turbine, not the compressor end.
Not to sure about that, for this diagram has many more blades than in the photo.
http://rwebs.net/avhistory/history/supercha.htm
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Originally posted by MiloMorai
wooly, next time bring a ruler along so you can it put in the pics.
HA! it will be a looooong time before ole wooly makes that hike again. I think that was a one time shot.
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Originally posted by MiloMorai
Not to sure about that, for this diagram has many more blades than in the photo.
http://rwebs.net/avhistory/history/supercha.htm
Maybe Bohdi can clear this up, since he has hands-on R-2800 experience. I'll defer to anyone on this one. I just looked at the construction of the housing and it appeared to be a part of the turbo. What else would use a turbine like this? Some sort of generator or other accessory?
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Originally posted by Stoney74
Maybe Bohdi can clear this up, since he has hands-on R-2800 experience. I'll defer to anyone on this one. I just looked at the construction of the housing and it appeared to be a part of the turbo. What else would use a turbine like this? Some sort of generator or other accessory?
Man you never know, I dont know diddly squat about engines, but it looks like the first picture up there is supposed to be with the engine......:noid
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1st pick is the intake side of the GE turbo that would be mounted in the bottom of the rear fuselage of a P-47. The fact that the GE turbo and the R2800 are together should confirm that the aircraft is indeed a P-47 because as far as I know, no other aircraft used that combo.
The engine definitely looks to me to be an R2800. It also seems to confirm that it is from a P-47 as you can see the remains of the Curtis Electric brush block holder on the front of the nose case.
Hope that helps.