ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,995, issued on May 6, was assigned to RTX Corp. (Farmington, Conn.).

"Hybrid electric single engine descent power extraction control" was invented by Martin Richard Amari (Glastonbury, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system of a hybrid aircraft includes a first gas turbine engine, a second gas turbine engine, and a controller. The first gas turbine engine includes a first low spool electric machine and a first high spool electric machine. The second gas turbine engine includes a second low spool electric machine and a second high spool electric machine. The controller is operable to determine an operating mode of the hybrid ai...