US Patent Issued to RTX on March 31 for "Hybrid-electric aircraft propulsion system" (Connecticut, North Carolina, Maine Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,878, issued on March 31, was assigned to RTX Corp. (Farmington, Conn.).

"Hybrid-electric aircraft propulsion system" was invented by Thomas E. Clark (Wells, Maine), John Akin (Charlotte, N.C.), Jung Muk Choe (Glastonbury, Conn.) and Andrew E. Breault (Bolton, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft propulsion system includes a gas turbine engine, an electric machine, and a drive train. The gas turbine engine includes a first spool and a second spool. The electric machine includes a first rotor and a second rotor. The first rotor and the second rotor are concentric about a first axis. The drive train couples the first spool ...