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Old 14th Nov 2012, 14:12
  #236 (permalink)  
FlexibleResponse
 
Join Date: May 2002
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A simple intuitive description of lift?

When an air vehicle slides through the air it displaces downwards a mass of air that can be seen as downwash.

When the mass of air being depressed equals the mass of the air vehicle level flight is possible.

When the mass of air being depressed is less than the mass of the vehicle, then the vehicle descends and when the mass of air exceeds the mass of the vehicle, the opposite occurs.

All the rest of the observables are symptomatic of the process of lift production and are for the Aerodynamicists to measure and worry over so that they may optimize design efficiencies for particular applications (and to confuse pilots!).
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