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Old Mar 11, 2004, 03:16 PM
Registered User
Joined Jan 2002
104 Posts
Include Elevons in C.G. Calc?

Building a simple delta fanfold bird. Was wondering if I need to include the elevons as part of C.G. calc. Basic planform dimensions are 32" total span with 16" root chord...before elevons. Thinking of starting out with 25% of mean chord.

Also, can deltas exibit tip stall?

Thanks for any help!


P.S. Will be powered by GWS DXA - shooting for a mellow elevon/
delta trainer.
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Old Mar 12, 2004, 07:39 AM
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
You do typically include elevons..
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Old Mar 13, 2004, 04:26 PM
Will work for planes
omega blood's Avatar
Fullerton, California, United States
Joined Jan 2002
1,783 Posts
yes and place your CG between 15 and 20%. 25 is too far back.

As far as tip stall if you are talking about a flying wing like a Zagi , I would guess yes. If you are talking about a plane shaped like a triangle I don't know. I have made 2 pibros (shaped like triangle) gliders a never saw them tip stall.
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