actually, from what I've seen of Heim Theory, it is more like reducing the effects of gravity in the early stages - to the point of turning gravity into a repulsive force IIRC, hence the usefulness for getting to orbit, and other propulsion requirements.
interestingly, elswhere in the full theory, it predicts a particle equivalent to a neutral electron, but this hasnt been spotted in detectors yet. they are looking, BTW...
