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>
>Stall approach warners are probably not affected though - fixed leading
>edges should still stall at their characteristic angles, regardless of
>flaps (but at a lower airspeed, with flaps).
>
>Jan de Jong.
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>
>
Extending your flaps with fixed leading edges increases lift coefficient
but the angle of incidence becomes smaller, draw a line from l/e to t/e
to see the chord at any given point and configuration and then hold it
against the relative airflow to see incidence.
Extending leading edge devices such as slats or l/e flaps increases the
angle of incidence again given a steady pitch angle.
So thats what you get, a dramatic change one or the other way in pitch
required to stall at a given speed when extending one or the other.
Alex
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