ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,116, issued on June 10, was assigned to ROLLS-ROYCE plc (London).
"Thermal soak-back mitigation" was invented by David M Donnelly (Bristol, Great Britain), Derek S Wall (Bristol, Great Britain) and Jonathan Wieland (Bristol, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of operating a gas turbine engine having a spool includes executing, by a controller, a pre-shutdown procedure. The pre-shutdown procedure includes: determining a parameter associated with a thermal condition of the gas turbine engine; and calculating an idle period for an idle rotation operation to be performed in a shutdown procedure. Calculation of the idle...