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Old October 3rd 07, 04:33 AM posted to rec.aviation.piloting
george
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Posts: 803
Default Backwash Causes Lift?

On Oct 3, 1:57 pm, Le Chaud Lapin wrote:

"In addition to the lowered pressure, a downward-backward flow of air
also is generated from the top surface of the wing. The reaction to
this downwash results in an upward force on the wing which demnstrates
Newtons' third law of motion. This action/reaction principle also is
apparent as the airstream strikes the lwoer surface of the wing when
inclinded at a small angle (the angle of attack) to its direction of
motion. The air is forced downward and therefore causes an upward
reaction resulting in positive lift."



I blame the lift pixies myself