US Patent Issued to PRATT & WHITNEY CANADA on July 15 for "Hydrogen turboexpander for use in an aviation propulsion system" (Canadian Inventor)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,623, issued on July 15, was assigned to PRATT & WHITNEY CANADA CORP. (Longueuil, Canada).

"Hydrogen turboexpander for use in an aviation propulsion system" was invented by Russell Stratton (Toronto).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft propulsion system includes a gas turbine engine, a hydrogen-exhaust heat exchanger, and a hydrogen turboexpander. The hydrogen-exhaust heat exchanger is disposed relative to a turbine exhaust section so that a flow of exhaust gas exiting the engine is in communication with the hydrogen-exhaust heat exchanger. The hydrogen-exhaust heat exchanger changes a flow of liquid hydrogen to gaseous hydrogen...