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Old 12-18-2020, 12:47 PM   #8 (permalink)
Vman455
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If you're arguing what I think you are--that atmospheric pressure integrated over all surfaces, top and bottom, of a vehicle at rest produces a lift force--your conclusion is not correct. It doesn't matter the shape of the surfaces; at rest and with no wind ("in all conditions, by default"), the force resultant from pressure will be *zero*.
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