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Feb 23, 2004, 07:46 AM
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Flyng Wing gravity center calculation


Hi,

I want to build a flying wing but I have a problem : how can calculate position of gravity center ? .

Thank in advance

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Davide
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Feb 23, 2004, 05:04 PM
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The Flying Pig's Avatar
What's the model?
Jun 05, 2004, 12:12 PM
Registered User

Cg


usually on flying wings the center of gravity is around 15% of cord. swept wing may change this slightly.
Jun 07, 2004, 11:51 PM
Registered User
you might try this: (for Flying Wings)
Q = (R x R) + (R x T) + (T x T)
divided by 6(R + T)

P = R + 2T
divided by 3(R + T)

D = Q + SP

WHERE R = Root Chord measurement
T = Tip Chord measurement
S = Sweepback of the leading edge measured at the tip

D = The distance back from the tip of the nose to the point of
balance(c.g.).
AND where the core is standard shape and has a straight leading edge. (i.e. not curved)

This comes pretty close (I found this formula in an article written by Jef Raskin)
Luke
Last edited by sylair; Jun 08, 2004 at 10:30 AM.
Jun 08, 2004, 01:27 AM
Will work for planes
omega blood's Avatar
http://www.coloradogliders.com/tools.htm
Use the CG calc at 15-20% @ the MAC Balance Point.
Last edited by omega blood; Jun 08, 2004 at 01:31 AM.