ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,447, issued on Nov. 25, was assigned to RTX Corp. (Farmington, Conn.).
"Real-time optical coking sensor" was invented by Stephen K. Kramer (Cromwell, Conn.) and Amanda B. Graves (Stuart, Fla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas turbine engine fuel system includes a fuel delivery system, an oil cooling subsystem, a fuel delivery conditioning system, and one or more optical coking sensors. The fuel delivery subsystem delivers fuel to a gas turbine engine and the oil cooling subsystem receives heated oil from the gas turbine engine. The fuel delivery conditioning system includes a fuel/oil cooler that is in fluid communication with the...