Anti-gravity Machine concept
The basic premise of the idea is the use of angular momentum to overcome the force of gravity. Imagine if you will, a gyroscope spinning at such a high velocity that its outward force overcomes the downward force of gravity. Naturally, one of the big obstacles is generating the speeds necessary to create the velocity such that angular momentum is greater than downward force.
What I essentially propose is a spinning ring that is propelled in the same way as a maglev train. Using Electromagnetic propulsion or EMP to accelerate a ring in a vacuum by the utilization of a flowing electrical current and magnetic fields may in theory generate the speeds necessary for the force to overcome gravity. Unfortunately, the power to run such a vehicle and the weight to power ratio are significant obstacles.
Two of these rings above one another I theorize can create tremendous propulsion if the angles of the rings were changed. Using hydrolics to change the angle of alignment of these two rings may create incredible forward momentum. Once more, such a vehicle would not be limited to operation within Earth's atmosphere unlike jet or other propulsion mechanisms. In fact, it should operate at peak efficiency in a zero gravitational environment.
This is all theory... and I'd love to know if it is indeed as crazy as it sounds.