In article ,
"Morgans" wrote:

"Alan Baker" wrote

Anyone who thinks that the pressure of a fluid on a surface can act in
any direction but towards the surface is simply wrong.

I see. You are not lookng at the wing as a system, but taking an
observation at one point only, without reguard to what is happening around
it.

Point made.

Nope.

I'm making the point that the upper surface contributes absolutely *no*
lifting force.

None.

Zero.

In fact, it provides a downward force. Every time.

--
Alan Baker
Vancouver, British Columbia
http://gallery.me.com/alangbaker/100008/DSCF0162/web.jpg