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Old 03-04-2004 | 01:48 PM
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CafeenMan
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From: Spring Hill, FL
Default RE: Flaperons on GP Slow Poke .40

ORIGINAL: RPM1

ORIGINAL: CafeenMan

If you have separate ailerons and flaps and deflect only the ailerons up, then you have wash-out.
Ok I understand your definition of AOA, totally clear on that. Now I am confused as to the above statement. If I am not dropping an inboard flap what does it matter if they are there? Would not raiseing the Ail. give the same affect on any plane (separate flap or not) in that case?
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Washout is a twist in the wing. If you have strip ailerons and you raise or lower them both then you have simply changed the camber, but you have not twisted the wing. If you have barndoor ailerons and your raise them, then yes, you have wash-out regardless of whether you have flaps or not.

Basically wash-out means the tips are flying at a lower AOA than the root. So strip ailerons won't do it unless you actually build a twist into them.