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sorry, no - gravity does not determine the forces that an aircraft engine can generate

there are two ways to address this:

  1.  the lift you can theoretically get from an aircraft wing

  2.  the thrust or torque that an aircraft engine can generate

gravity plays a small part in the lift that you can generate, as a downwards force, but the Bernoulli equation for incompressible fluids (of which air is with a Mach number under .6) is the determining equation here - the lift generated is the result of the pressure differential across a surface (and gravity is taken into account in that equation)

gravity plays no part in the equation of the thrust or the torque that an engine can generate - this is limited by the efficiency of the compressor, which is dictated by its mechanical design and the physical properties of the fluid (air is considered to be a fluid) being used

by manon (m@gmail.com) on Sun Sep 17th, 2006 at 04:30:48 PM EST
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Let's take this to the open thread.

Those whom the Gods wish to destroy They first make mad. — Euripides
by Migeru (migeru at eurotrib dot com) on Sun Sep 17th, 2006 at 04:32:29 PM EST
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