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Jagdgeschwader2
10-09-2004, 08:14 PM
I wonder if we can control the oil cooler shutter doors on the Corsair. Cooling should be
easier to manage I suppose with dual oil coolers in addition to cowl flaps. I imagine there will be different drag penalties associated with open doors as apposed to closed doors. Anyone know?

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/22.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/20.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/21.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

Jagdgeschwader2
10-09-2004, 08:14 PM
I wonder if we can control the oil cooler shutter doors on the Corsair. Cooling should be
easier to manage I suppose with dual oil coolers in addition to cowl flaps. I imagine there will be different drag penalties associated with open doors as apposed to closed doors. Anyone know?

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/22.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/20.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/21.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

VF-3Thunderboy
10-09-2004, 09:26 PM
I think you would only use full closed on the ground to warm up? The drag difference would probably be insufficient, unless the air shoots out. I know the exaust in certain planes actualy propelled them forward a bit more.

Jagdgeschwader2
10-09-2004, 10:23 PM
Yes on the ground they would be full closed for warm up. Probably won't have to wait too long for warm up in the pacific. I'm reading through a book and it says depending on the position of the shutters and the aircraft's speed,the F4U emitted it's distinctive whistling sound. So they obviously had different settings in flight.
Different temps at different altitudes would
dictate the amount of cooling required. There
is no mention of drag associated with the doors open. Perhaps it is very minimal.

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

Fliger747
10-10-2004, 03:06 AM
The inlet at the wing root is also used as an intake for the intercooler for the supercharger and the inlet for the supercharger as well.

Difference in positional cooling drag for the oil coolers was minimal compared to the engine!

Snootles
10-10-2004, 12:25 PM
Were the shutters controlled automatically or was it manual?

Fliger747
10-10-2004, 01:22 PM
Good question! My cockpit diagrams for the F4U show three (unidentified) "cooling" levers. 1944 Fighter conf. discusses the advantages of (going to?) automatic controls. Later F4U models had automatic cowl flaps, which could be a disadvantage in formation flying, as they do produce a big drag change!

Fliger747
10-10-2004, 01:25 PM
The diagrams dinn'a show up on my screen the first time around. The shutter vanes on the left side are for the supercharger intake and intercooler. The oil cooler is the 'honeycomb' drum on the right.

Jagdgeschwader2
10-10-2004, 03:08 PM
Thanks for the info Fliger747. I need to get
a more detailed book on this machine.


http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

VF-3Thunderboy
10-10-2004, 03:56 PM
Is that from the Corsair flight manual? Theyre nice pics! - I think lots of airplanes make a whistling sound at high speed. P-51 (from the movie cloudancer) makes a cool sound. (might be "touched up" for the film?- Anyone been to RENO lately?) and I have a 190 folke wulf fly by sound file that whisltles pretty good too!

Yellonet
10-10-2004, 04:05 PM
The opened and closed pictures aren't even the same model http://forums.ubi.com/groupee_common/emoticons/icon_wink.gif

Jagdgeschwader2
10-10-2004, 04:31 PM
The photos are from the Warbird Tech Series Vought F4U Corsair. A good reference but not as detailed as I would have liked. There are actually three photos of the oil cooler
shutters in different positions I only posted
two for my purposes. They operate in the same
manner. I edited the photos due to copyright
restrictions that just occurred to me lol.

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

VF-3Thunderboy
10-10-2004, 07:54 PM
Whats that yellow floatplane?? I wonder how you got in the cockpit without stepping on the flap??

Fliger747
10-10-2004, 10:24 PM
Corsair was boarded from the starboard side, with a steps(push in door) on the flap and on the side of the fuselage. The yell'er float plane, a bipe at any rate, tail doesn't match the 'usual suspects'!

BfHeFwMe
10-10-2004, 10:56 PM
The forward landing gear were rated and designed for use as dive brakes, the tailwheel, doors, and hook would be set back to the up position before diving, they couldn't take the speeds.

Fliger747
10-11-2004, 12:52 AM
Pretty close. Actually this (the drag brake) was the result of field experiments, and later incorporated into production aircraft. Limiting factor on the tailwheel assembly was the doors, which were attached with 'piano' type hinges.

A good expedient, making a suprisingly good dive bomber.

Fliger747
10-11-2004, 01:59 AM
Those yelle'r tail feathers sure look like those on a Stearman. I have some dim recollection that the Naval Academy used some of those once-upon-a-time.

Jagdgeschwader2
10-11-2004, 05:14 PM
I'm curious about that floatplane myself.
I was running all over the place taking
pictures and I forgot to ask about it.
Looks like a Stearman to me although I
could be wrong.

More photos of it:

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/92.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/91.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/90.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

Fliger747
10-11-2004, 06:54 PM
Most civilian restored Stearman's are painted up in some colorful 'pre-war' type 'paint job'. I asked my dad who learned to fly during the war in one, and he said they were all yellow, just like the above example (except on wheels). he didn't get his float rating for another 35 years, when I taught him.

Jagdgeschwader2
10-11-2004, 08:06 PM
Wow I bet he has some great stories to tell.
I took these photos at the Smithsonian Steven F. Udvar Hazy Center. This is a great museum
for all aviation enthusiasts.

Here is an original restored Stearman like your father flew.
http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/93.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

VVS-Manuc
10-12-2004, 03:10 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Jagdgeschwader2:
I wonder if we can control the oil cooler shutter doors on the Corsair. Cooling should be
easier to manage I suppose with dual oil coolers in addition to cowl flaps. I imagine there will be different drag penalties associated with open doors as apposed to closed doors. Anyone know?

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/22.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/20.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/21.jpg

http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg <HR></BLOCKQUOTE>

You are demanding a complex engine management for PF? You will get nothing better than in FB/AEP.

Gunny124
10-12-2004, 12:57 PM
Hey J, I think your amphib there is a Naval Aircraft Factory N3N Canary. Check the link and see but the three view looks awful close.


http://www.daveswarbirds.com/usplanes/american.htm

Jagdgeschwader2
10-12-2004, 01:43 PM
That has got to be it Gunny124. I can't seem to find many photos of this machine so I guess it's a really rare bird these days. I'm glad I was able to photograph it. Also thanks for the great web page that one will come in handy.


http://home.earthlink.net/~jagdgeschwader26/sitebuildercontent/sitebuilderpictures/jagdgeschwader2s.jpg

F16_Fatboy
10-12-2004, 02:44 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Fliger747:
The inlet at the wing root is also used as an intake for the intercooler for the supercharger and the inlet for the supercharger as well.

Difference in positional cooling drag for the oil coolers was minimal compared to the engine! <HR></BLOCKQUOTE>

Yup! And this is how the air went,compicated stuff.From the book "F4U Corsair" F.A. Johnsen/R.Watanabe.

http://img.photobucket.com/albums/v125/F16_fatboy/PICT0003.jpg

No scanner so a photo is the best I can do.

FLSTF

Gunny124
10-12-2004, 03:45 PM
No prob J. Nice little site aint it. There were birds in there I'd never heard of.

Gunny