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Old 05-19-2013 | 06:47 AM
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Rob2160
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From: Sydney, AUSTRALIA
Default RE: Tip Stall


ORIGINAL: Charlie P.

Had one today. I was maidening a G-44 Widgeon (GP electric twin-engine seaplane)and slowing it down in anticipation of landing or some touch-and-goes. She has a 28 oz/in sq wing loading and fully tapered wings. As I lowered throttle at 50 ft to watch the glide characteristics she fooled me andtucked a wing under and went into a beautiful inverted flat spin. Nothing I tried broke the spin and she landed updide-down with a Splash! Underpowered for the weight - but scale so I should have known better and kept the speed up.

Nothing damaged but one nacelle & propand my pride. Came down like a maple seed.
The aircraft will NEVER stall by itself..... A stall will never just Happen to you.. It is a result of what you are doing wtih the elevator. any aircraft will stall if you apply too much elevator..

Depending on a number of factors (control throw, CofG, wing shape, elevator size etc) the elevator position for the stall may be 30% deflection or it may be 90% deflection, but for a given aircraft, and without changing the CofG, the elevator position will always be the same .

The tapered wings will usually stall at the tips first,

When I hear people say.. "The plane just stalled on me, the true answer is.. NO.. you stalled the airplane by using too much elevator... you just may not have realised you were doing it"