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Old July 17th 04, 01:18 AM
Bruce Hoult
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In article ,
Andreas Maurer wrote:

But if the tip is already stalled it doesn't matter a lot if it has
exceeded its maximum AoA by 2 degrees or 6 - the resulting stall is
the same.


No it's not. There isn't a "maximum angle of attack". There is only an
"angle of attack for maximum lift". As you approach that angle of
attack the rate of lift increase gets smaller and smaller, then you get
the same amount of lift at slightly increasing angles of attack, and
then with still more angle of attack you get less lift. The more you
take the angle of attack past the point of maximum lift the less lift
you get.

So, yes, it does matter whether you are 2 degrees or 6 degrees past the
angle of attack for maximum lift.

-- Bruce