System and method for removing rotor bow in a gas turbine engine using mechanical energy storage device
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United States of America Patent
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Sep 1, 2020
Grant Date -
Jul 4, 2019
app pub date -
Jan 4, 2018
filing date -
Jan 4, 2018
priority date (Note) -
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Abstract
The present disclosure is directed to a gas turbine engine structure and method for reducing or mitigating bowed rotor. The method includes coupling a rotor assembly to a mechanical energy storage device via a clutch mechanism when the rotor assembly is at or below a speed limit below an idle speed condition; storing mechanical energy at the mechanical energy storage device via rotation of the rotor assembly at or below the speed limit; releasing mechanical energy from the mechanical energy storage device to rotate the rotor assembly following shutdown of the gas turbine engine; and rotating the rotor assembly via the mechanical energy from the mechanical energy storage device.
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