Yes, but objects falling within the atmosphere don't behave the same as two large objects in space attracting each other... The reason why objects fall at the same rate is that he gravitational acceleration caused by the earth's gravity is constant (at the same point on the surface of the earth, relative to two different objects). This is in part because the falling objects have infintesimal mass compared to that of the earth (though technically they do actually move the earth an infintesimal distance closer to themselves as they fall

). Objects in space are governed by the relation F = G * M1 * M2 / r^2, where F is force, G is a constant, M1 and M2 are the masses of the two objects, and r is the distance between them. A more massive object causes more gravitational force between the objects, and thus greater acceleration.
Now, since a gravitational drive is pure sci-fi at this point in history, how it works is somewhat arbitrary.

How did you envision your gravitational drives as working?
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oh, and the supply usage thing does affect engine supply use, right?
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Right, as long as you are talking about the supply usage on the engine component itself (not any components that provide just bonus movement though; they have to provide strategic movement), or a mount affecting such a component.
[ October 27, 2003, 22:46: Message edited by: Imperator Fyron ]