PURPOSE: To provide a space drive type propulsion device using space strain energy generated in the space itself as a propulsion force, while controlling the curvature component of the space with magnetic energy, by providing a flying body with a magnetic energy generation means and a magnetism control means.

CONSTITUTION: A flying body 1 or a disc is formed to be, for example, elliptical, and propulsion engines 21 to 26 are respectively laid, for example, at four peripheral positions resulting from the equal division of a disc periphery, and at both center positions on the upper and lower sides of the disc. The engines 21 to 26 are so constituted that magnetic energy generation means and magnetism control means for the control thereof are arranged in such a way as corresponding to each other on a one-to-one basis. In this case, the magnetic energy generation means generates strong magnetic field, and increases the value of the curvature component of space around the body 1, thereby generating acceleration field as space strain energy. Also, the magnetism control means localizes the change of the curvature component in a quasi-antisymmetrical way and, at the same time, changes the magnetic field, for example, like a pulse for obtaining a propulsion force.