ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,892, issued on Sept. 23, was assigned to Rolls-Royce North American Technologies Inc. (Indianapolis).
"Hybrid turbine engine with selective electrical module engagement" was invented by Richard Keller (Indianapolis) and Dwayne Bevis (Bloomington, Ind.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hybrid propulsion system for an aircraft includes a gas turbine engine, an energy storage device, at least one propulsor configured to use energy provided by one or both of the gas turbine engine and the energy storage device to provide thrust. The system also includes a controller configured to vary the power provided to the propulsor(s) in response to...