Low-power bowed rotor prevention and monitoring system
AssigneeUnited Technologies Corporation
InventorsJesse W. Clauson, Frederick M. Schwarz
Life of this patent
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Abstract
A bowed rotor prevention system for a gas turbine engine includes a core turning motor operable to drive rotation of an engine core of the gas turbine engine. The bowed rotor prevention system also includes a full authority digital engine control (FADEC) that controls operation of the gas turbine engine in a full-power mode and controls operation of the core turning motor to drive rotation of the engine core using a reduced power draw when the FADEC is partially depowered in a low-power bowed rotor prevention mode.
Claims20
A bowed rotor prevention system for a gas turbine engine, the bowed rotor prevention system comprising:
- a core turning motor operable to drive rotation of an engine core of the gas turbine engine;
- and
- a full authority digital engine control (FADEC) that controls operation of the gas turbine engine in a full-power mode and controls operation of the core turning motor to drive rotation of the engine core using a reduced power draw when the FADEC is partially depowered in a low-power bowed rotor prevention mode.
A method of bowed rotor prevention for a gas turbine engine, the method comprising:
- engaging a core turning motor with turbomachinery of the gas turbine engine;
- and
- controlling the core turning motor by a full authority digital engine control (FADEC) to rotate the turbomachinery of the gas turbine engine using a reduced power draw when the FADEC is partially depowered in a low-power bowed rotor prevention mode, wherein the FADEC controls operation of the gas turbine engine in a full-power mode.
Dependencies are inferred from the claim text.