If the theory is verified then heim suggested that a properly scaled system could possibly be used as a propulsion device.

The only energy required would be that needed to accelerate the ring and generate the magnetic field. 

Theoretically the gravitophotons would be produced from the vacuum of space, so there is no need to carry large quantities of propellants.

And the acceleration of such a craft would be limited by the rotational velocity of the disc and the strength of the magnetic field, so theoretically a craft could have an unlimited acceleration.

This is about as far as heim took his theory with respect to propulsion.