Gyrogravitic drives are fundamentally just a different form of inertial drive. They use spinning masses to produce thrust.
Where they differ, though, is that instead of using torque transition or un-balanced centifugal force to produce that thrust, they use smooth, fluid rotation of gyroscopes to wrap their action/reaction in a circle if you will, making the universe interpret their complex movements as accelerating mass in one direction, and reacts by allowing the drive to move in the opposite direction.
Their are literally dozens of theories describing mechanical devices that could acomplish this. Some are very simple, some are so complex that looking at a picture of them gives you a headache. But they are all the same in the fundamental trait that they consist of gyroscopes, being forced to move in various manners around a central axis.
I am most familiar with one of these devices, the DST, short for Double Spin Torus. It consists of two gyroscopes, arranged so that their planes of rotation are parrellel, but their spins opposite, fixed on either side of an axis in a manner such that the gyroscopes (minor axis) rotate about the major axis, whose plane of rotation is perpendicular to that of the gyroscopes. Did you get all that? Good. I'm horrible at describing things, so I'll just give you a picture.
To my knowledge, no one has built one of these yet. Except for myself. I haven't finished it yet, but when I do you can be sure that I'll publish the testing results and pictures onto this page. When I first came up with the idea, little did I know that dozens of other had thought of it as well, and published their ideas to the net. This makes it incredibly difficult to patent, but I always have a plan B.....
