ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,678, issued on April 22, was assigned to RTX Corp. (Farmington, Conn.).

"Power and energy management for distributed hybrid propulsion" was invented by Zubair A. Baig (South Windsor, Conn.), Martin Amari (Glastonbury, Conn.) and Tyler W. Hayes (Rockford, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A distributed hybrid propulsion system is provided and includes an engine assembly that includes an engine, which is non-propulsive, an energy storage element, a motor-generator and a common bus to which the engine assembly, the energy storage element, the motor-generator and the controller are connected. The common bus includes bi-directional power...