ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,680, issued on June 17, was assigned to RTX Corp. (Farmington, Conn.).
"Turbine engine bottoming cycle heat exchanger bypass" was invented by Neil J. Terwilliger (Cheshire, Conn.) and Brandon M. Evans (San Antonio).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft propulsion system includes a core engine assembly that generates an exhaust gas flow, a bottoming cycle that includes a bottoming fluid flow that is expanded through a bottoming turbine, a first heat exchanger where heat from the exhaust gas flow is transferred to heat the bottoming fluid flow, and a second heat exchanger where heat from a secondary heat source is transferred to he...