pluto wrote:
You may find thinteresting to read.

http://arxiv.org/abs/astro-ph/0605213

That is an interesting article.

For instance, on the top of any aircraft can be put a high-speed rotational mass. The rotational gravity produced by the mass can partially offset the earth gravity from beneath the aircraft. Because rotational gravity is squarely proportional to the rotation speed, rotational gravity can be comparable to aircraft weight if the speed is large enough.

Hmm. So one could construct a spacecraft by having a big spinning gyroscope and underneath it you have your cabin. The spinning gyroscope generates its own gravitational force that pulls on the cabin, and it rises. Since it is connected to the gyroscope, the gyroscope is lifted as well. Sort of pulling itself up by its own bootstraps.

The cabin would be in the plane of rotation (perpendicular to the axis of rotation). Seems like it would be trivial to test this. Have a very accurate scale with a weight on it underneath a spinning object, see if the scale changes as the spinning object goes faster and faster.

Personally I’d love if GR were disproved.