BOWED ROTOR START MITIGATION IN A GAS TURBINE ENGINE
First Claim
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1. A bowed rotor start mitigation system for a gas turbine engine, the bowed rotor start mitigation system comprising:
- a controller operable to receive a vibration input indicative of an actual vibration level of the gas turbine engine and a speed input indicative of a rotor speed of the gas turbine engine, the controller generating a bowed rotor start mitigation request based on comparing the actual vibration level to a modeled vibration level at the rotor speed.
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Abstract
A bowed rotor start mitigation system for a gas turbine engine is provided. The bowed rotor start mitigation system includes a controller operable to receive a vibration input indicative of an actual vibration level of the gas turbine engine and a speed input indicative of a rotor speed of the gas turbine engine. The controller generates a bowed rotor start mitigation request based on comparing the actual vibration level to a modeled vibration level at the rotor speed.
29 Citations
20 Claims
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1. A bowed rotor start mitigation system for a gas turbine engine, the bowed rotor start mitigation system comprising:
a controller operable to receive a vibration input indicative of an actual vibration level of the gas turbine engine and a speed input indicative of a rotor speed of the gas turbine engine, the controller generating a bowed rotor start mitigation request based on comparing the actual vibration level to a modeled vibration level at the rotor speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A gas turbine engine system comprising:
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a motoring system operable to drive rotation of the gas turbine engine; a vibration monitoring system operable to monitor actual vibration of the gas turbine engine; and an electronic engine control operable to receive a vibration input indicative of an actual vibration level from the vibration monitoring system and a speed input indicative of a rotor speed of the gas turbine engine, the electronic engine control generating a bowed rotor start mitigation request that drives the motoring system to perform bowed rotor mitigation based on comparing the actual vibration level to a modeled vibration level at the rotor speed. - View Dependent Claims (10, 11)
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12. A method of bowed rotor start mitigation for a gas turbine engine, the method comprising:
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receiving a vibration input indicative of an actual vibration level of the gas turbine engine; receiving a speed input indicative of a rotor speed of the gas turbine engine; and generating, by a controller, a bowed rotor start mitigation request based on comparing the actual vibration level to a modeled vibration level at the rotor speed. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification