Abstract: A propulsion engine and its use in a vehicle and method for space propulsion of a vehicle in a gravitational field for orbital altitude control or travel in deep space. The propulsion engine of the vehicle employs non-ejectable propellant masses that are accelerated cyclically in a selected average vectorial direction between two random and distinctive points following any random path with a mean central point, thereby generating and amplifying local gravity assist. The acceleration of the non-ejectable propellant masses causes the propulsion engine to accelerate the vehicle away from the source of the gravitational field to a tangential velocity that matches or exceeds the stable tangential velocity to maintain or raise the vehicle to a second stable orbital altitude, or continuously and locally generates gravity assist boost moving through the cosmic gravitational field lines in deep space.

Abstract: An example power delivery network includes an energy transfer element, a main power port, and a main port interface. The energy transfer element includes multiple windings, where a first power converter transfers power between a first power port and a first winding, and a second power converter transfers power between a second winding and a second power port. The main port interface is coupled cyclically reverse a dc voltage received at the main power port and provides a cyclically reversed voltage to a third winding of the energy transfer element at a fixed duty ratio, where the transfer of power between the first power port and the first winding is independent of the transfer of power between the second winding and the second power port. Also, the main power port has an effective impedance less than an effective impedance of the first power port and the second power port.

Abstract: An example power delivery network includes an energy transfer element, a main power port, and a main port interface. The energy transfer element includes multiple windings, where a first power converter transfers power between a first power port and a first winding, and a second power converter transfers power between a second winding and a second power port. The main port interface is coupled cyclically reverse a dc voltage received at the main power port and provides a cyclically reversed voltage to a third winding of the energy transfer element at a fixed duty ratio, where the transfer of power between the first power port and the first winding is independent of the transfer of power between the second winding and the second power port. Also, the main power port has an effective impedance less than an effective impedance of the first power port and the second power port.