ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,234,775, issued on Feb. 25, was assigned to Rolls-Royce plc (London).
"Rotor bow mitigation" was invented by David M. Donnelly (Bristol, Great Britain) and Derek S. Wall (Bristol, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is disclosed a gas turbine engine comprising: an electrically-powered motor configured to rotate a driven spool of the gas turbine engine; a primary controller configured to conduct a primary function using the motor; and a bow controller configured to selectively control the motor to perform a rotor bow mitigation operation in which the motor drives the driven spool to rotate to mitigate a non-uniform thermal ...