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Thread: Theory on lift
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Old 23rd Oct 2012, 16:07
  #197 (permalink)  
A Squared
 
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Originally Posted by Lyman
That is fundamentally the point I try to make, the wing compresses air,.....
Nope. Wrong again. At the airspeeds encountered in a typical general aviation aircraft, (less than 200 knots) there is no significant compression of the air.

Originally Posted by Lyman
Air is not a liquid
Uhh, yeah, for the purposes of understanding the aerodynamics of a low speed airfoil it is in fact, essentially an incompressible fluid. There is no significant change in the volume of the air as it flows around an airfoil at say 150 knots. A change in pressure, but not in volume.

This gets back to my earlier comment. Most of what you "know" is wrong.

Originally Posted by Lyman
It is the wing that moves, not its medium...
A meaningless distinction. What matters is that there is relative motion. Which is moving and which is not is completely dependent on the frame of reference, arbitrary, and completely irrelevant.

The fact that you beleive that this is meaningful is only an illustration of how poorly you understand physics.
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