X-Mozilla-Keys:                                                                                 
Quote from NASA:

"To find the net lift force provided by an airfoil with a given set of
parameters, subtract the force pushing down on the upper surface from
the force pushing up on the lower surface."


WRONG!

How about that? I was unaware that airfoils worked this way.

I always thought the force on the top pulled up
and the force on the bottom pushed up and therefore
you added them. 


Yes! I know exactly what they mean. The force
on the top is a negative force! 

Negative force???  Is that a black hole??? ha.. ha.. ha..


Paul Lamar
 
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