On 27/01/2011 05:27, Ing. Marcelo Fornaso wrote:
> I'm sure you understood I was referring to efficient airfoils.
> And what I wanted to stress in may bad english is that the effects produc=
ed in
> the top (upper camber?) are far more important than those produced in the=
 lower
> camber.
> Of course all the effects (even at the top of the wings) result in air mo=
ving
> down.
>
you don't need an aerofoil. A flat plate will work. Just not efficiently=20
or very stable
--=20
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