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Old 7th Dec 2012, 04:42
  #350 (permalink)  
Bpalmer
 
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ABSOLUTELY!

F=Ma

Force = Mass x acelleration


That's the forumla. The speed changes, the pressure changes (all over the wing)-
some higher (leading edge) some lower( aft of that). Cause or effect.
The basic principle is that you must acellerate a mass of air (change its direction and/or velocity. The prop, the wing, the rotor, the jet they all do the same thing. Some do a small mass of air with a big acelleration, some to a big mass of air with a smaller acelleration. Diagrams like the rotating cylinder do nobody any good. That was apparently drawn by somebody who didn't get it himself, and had a hard time explaining it to anyone else.
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