Rtx Corporation

United Technologies Corporation

Raytheon Technologies Corporation

Graham R Philbrick

Gary Collopy

John P Virtue

Patrick D Couture

Jason Arnold

James P Chrisikos

Joseph E Barker

David R Griffin

An operating method is provided during which a command is received to decrease thrust generated by a propulsor rotor from a first thrust level to a second thrust level. The propulsor rotor is operatively coupled to an engine core and an electric machine. The engine core includes a flowpath, a compressor section, a combustor section and a turbine section. The engine core is operated in a transient state to decrease total power of the engine core from a first power level to a second power level in response to the command. The electric machine is operated as a generator to reduce power output from the engine core to the propulsor rotor while the engine core is operating in the transient state. A clearance control system for the engine core is operated based on the operation of the electric machine.

Turbine engine tip clearance control utilizing electric machine

Growing community of inventors

Durham, CT, United States of America

Graham R Philbrick