Dec 28, 2004, 10:45 AM
EDF Jet Jam 2017, June 15-18
Kevin Cox's Avatar
Nice Ed!
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Dec 28, 2004, 10:58 AM
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The twin 90 F-22 fuse is 60.5 inches long. I have a few basic pics on rcuniverse and will get some better ones Thursday.
Dec 28, 2004, 11:19 AM
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Thomas Nelson's Avatar
Actually Mr Boogie (Microjet powered F-35 thread here in Jets) and I had already decided to experiment a bit. Not so much with surface roughness as layout. His access to fast prototyping equipment should allow the reproduction of essentially identical ducting, to which we can make simple, controlled changes. His bird is so close to 1:1 t/w already, that I'm thinking flight testing should be sufficient to "measure" the results. If we get anything worth reporting we'll post a thread. Who knows, perhaps 3D AutoCAD is able to produce surface textures too, thereby allowing THAT area to be explored as well.

Meantime Ed, are you aware of any online resources on the topic? Again, sorry to stray OT. Feel free to PM if that seems more appropriate.



tn


Quote:
Originally Posted by Ed Waldrep
... Maybe someone will build two different versions of the same ducting and mount small turbulators in one to see if there's a difference in performance. The dynamic portion would be hard to test without a wind tunnel I suppose... Making the turbulators would be the hard part... My understanding has always been that turbulence is to be avoided in inlet ducting, but maybe stirring up the boundary layer is a good thing? I doubt it will have a huge impact on performance in though.
Jan 27, 2005, 10:27 PM
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Just wondering...

Bob
Feb 01, 2005, 11:21 AM
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Ed Waldrep's Avatar
Well I've been making slow but sure progress on the F-22 twin. Here's the latest pics. Strip planking was required in some areas like the fan access hatch and around the nose area and cockpit because of the compound curves but most of the plane is sheeted with big sheets.
Feb 01, 2005, 02:15 PM
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Daren's Avatar
Cool. You've got the body part of the lifting body, now all you need is the lifting part.

Daren
Feb 01, 2005, 06:20 PM
EDF rules... :)
AirX's Avatar
Nice work Ed, looking really good...

Eric B.
Feb 01, 2005, 06:20 PM
EDF Jet Jam 2017, June 15-18
Kevin Cox's Avatar
Nice Ed.
Feb 01, 2005, 06:47 PM
Registered User
Looking good!

Keep up the good work.

Phil
Feb 01, 2005, 07:46 PM
Team EJF >>>WHOOSH>>>
AceMigKiller's Avatar
wow...lol,
Victor
Feb 01, 2005, 07:51 PM
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Just awesome!

Ed,
Will you be using functional rudders?

Screaming twins are going to sound sweet!

Bob
Feb 01, 2005, 08:47 PM
wheel chock
mitchamus's Avatar
Quote:
Originally Posted by Ed Waldrep
That's printing on the donut box...but I guess it does sort of make the round shape visible as well! Some may choose Count Chocula cereal or Trix!

Reminds me of the BVM hush kit!
Feb 02, 2005, 01:44 AM
Wof
Wof
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Wof's Avatar
Nice build watching this one.

Regards Mark
Feb 02, 2005, 02:11 AM
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RCParkflyer's Avatar
signing on
Feb 02, 2005, 02:20 AM
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Ed,

It's great. Keep going.

Steve


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