BOWED ROTOR PREVENTION SYSTEM AND METHOD FOR A GAS TURBINE ENGINE

A bowed rotor prevention system (100) includes a gas turbine engine (20), an electric motor (102), and a core turning controller (150). The gas turbine engine (20) includes a rotor that is rotatably coupled to a drive shaft (50). The electric motor (102) is rotatably coupled to a motor shaft (108),...

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Bibliographische Detailangaben
Hauptverfasser:	SOLOMONIDES, Jason B, SCHAFER, Bradley C, MULDOON, Marc J, VIRTUE, Jr., John P, WINEBRENNER, Brian V
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A bowed rotor prevention system (100) includes a gas turbine engine (20), an electric motor (102), and a core turning controller (150). The gas turbine engine (20) includes a rotor that is rotatably coupled to a drive shaft (50). The electric motor (102) is rotatably coupled to a motor shaft (108), which is mechanically coupled to the drive shaft (50) so as to rotate therewith. The core turning controller (150) is in signal communication with the electric motor (102). The core turning controller (150) determines whether a rotor bow is present in the rotor based on an operating time of the gas turbine engine (20), determines a motoring time based on the operating time, and invokes an anti-rotor bowing mode configured to control the electric motor (102) to rotate the rotor according to the motoring time.