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Old 07-07-2009, 09:18 AM   #17 (permalink)
Danal Estes
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Quote:
Originally Posted by Finless View Post
Ummm my only question is how can they auto-rotate without some negative? Not sure that is possible.... I don't care if the negative is from blade flex or what but I know the pitch must be some negative as that is how an auto works to keep the head speed up.

Bob

The "requirement" for negative pitch is a common mis-perception among model helicopter pilots. Full scale does not require negative collective pitch to sustain an auto. If so, a gyrocopter could never sustain flight.

See here
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