On Wed, 28 Jul 2004 23:55:09 +0200 Erik Hofman <[EMAIL PROTECTED]> wrote:
Jon S Berndt wrote:
That's because it's _mostly_ (or entirely) the "sucking" action above the wing that contributes the most to lift.
No, that is the *result* of lift, not the *cause*.
Erik
No, you're mixing up cause and effect.
From "Fundamentals of Aerodynamics" (John Anderson) is this succinctly put explanation: "No matter how complex the body shape may be, the aerodynamic forces and moents on the body are due entirely to the above two basic sources." The two sources were listed as, Pressure distribution over the body surface, and shear stress distribution over the body surface. If you integrate the pressure distribution over the body (a wing, for instance), you get lift (and drag, if you componentize them in a coordinate system aligned with the velocity vector).
Jon
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