ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,377, issued on May 5, was assigned to SAFRAN AIRCRAFT ENGINES (Paris) and GENERAL ELECTRIC COMPANY (Schenectady, N.Y.).

"Unducted propeller gas turbine comprising a cooling air channel and a variable bleed valve ejection channel" was invented by Tom Everaets (Moissy-cramayel, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine includes two unducted propellers, a main channel, a compression stage located in the main channel, the main channel supplying the compression stage with air, a cooling channel extending from a cooling inlet opening into the main channel, the cooling inlet being located upstream of the compression stage with refer...