A method and means to produce a propulsion force comprises a source of electrons and means to produce pseudoelectrons. A gravitating body such as the Earth provides a repulsive fifth force on the pseudoelectrons. Pseudoelectrons are produced by absorption of high-energy photons by electrons. The pseudoelectrons experience a fifth force (F ) away from the Earth and move upward away from the Earth. To use this F device for propulsion, the repulsive fifth force on the pseudoelectrons is transferred to a negatively charged plate. The Coulombic repulsion between the pseudoelectrons and the negatively charged plate causes the plate to lift. The craft may additionally be imparted with angular momentum along an axis defined by the gravitational force, and the craft may be tilted to move the vector away from the axis where a component of acceleration tangential to a surface of a gravitating body is achieved via conservation of angular momentum.