ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,388, issued on Aug. 25, was assigned to RTX Corp. (Farmington, Conn.).
"Cryogenic fuel semi-closed recirculating bottoming cycle" was invented by Brandon M. Evans (San Antonio) and Neil J. Terwilliger (Cheshire, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft propulsion system includes a cryogenic fuel system and a fuel flow path where a fuel flow is circulated from upstream in a direction downstream to a combustor of the core engine. A first heat exchanger inputs heat into the fuel flow downstream of the first heat exchanger is used to heat the fuel flow from the fuel storage tank and a second heat exchanger inputs thermal energy f...