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Old Dec 28, 2004, 10:45 AM
2014 EDF JET JAM We be Jamming
Kevin Cox's Avatar
St. Louis Intl, Missouri, United States
Joined Jan 1997
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Nice Ed!
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Old Dec 28, 2004, 10:58 AM
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Greenwood Indiana
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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.
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Old Dec 28, 2004, 11:19 AM
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Thomas Nelson's Avatar
Calgary, Alberta, Canada
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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.
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Old Jan 27, 2005, 10:27 PM
Watts is life...
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Just wondering...

Bob
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Old Feb 01, 2005, 11:21 AM
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Ed Waldrep's Avatar
Las Vegas, NV
Joined Dec 1996
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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.
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Old Feb 01, 2005, 02:15 PM
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Daren's Avatar
Los Alamos, NM, USofA
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Cool. You've got the body part of the lifting body, now all you need is the lifting part.

Daren
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Old Feb 01, 2005, 06:20 PM
EDF rules... :)
AirX's Avatar
Joined Nov 1999
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Nice work Ed, looking really good...

Eric B.
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Old Feb 01, 2005, 06:20 PM
2014 EDF JET JAM We be Jamming
Kevin Cox's Avatar
St. Louis Intl, Missouri, United States
Joined Jan 1997
6,757 Posts
Nice Ed.
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Old Feb 01, 2005, 06:47 PM
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Oshkosh, WI
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Looking good!

Keep up the good work.

Phil
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Old Feb 01, 2005, 07:46 PM
Team EJF >>>WHOOSH>>>
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Joined Jul 2004
5,219 Posts
wow...lol,
Victor
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Old Feb 01, 2005, 07:51 PM
Watts is life...
rcjetpilot's Avatar
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Just awesome!

Ed,
Will you be using functional rudders?

Screaming twins are going to sound sweet!

Bob
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Old Feb 01, 2005, 08:47 PM
wheel chock
mitchamus's Avatar
NSW, Australia
Joined Nov 2002
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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!
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Old Feb 02, 2005, 01:44 AM
Wof
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Nice build watching this one.

Regards Mark
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Old Feb 02, 2005, 02:11 AM
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signing on
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Old Feb 02, 2005, 02:20 AM
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Ed,

It's great. Keep going.

Steve
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