ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,748, issued on Sept. 30, was assigned to ROLLS-ROYCE plc (London).

"Aircraft power and propulsion systems comprising permanent magnet electrical machines" was invented by David R Trainer (Derby, Great Britain), Ellis F H Chong (Derby, Great Britain), Mark Sweet (Chesterfield, Great Britain) and Gian Incerpi (Buckingham, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "Reconfigurable permanent magnet electrical machines and aircraft power and propulsion systems comprising such electrical machines are described. In one aspect, an aircraft power and propulsion system comprises: a gas turbine engine; a permanent magnet electrical machine co...