Bowed rotor sensor system
First Claim
1. A bowed rotor sensor system for a gas turbine engine, the bowed rotor sensor system comprising:
- a bowed rotor sensor operable to transmit a sensing field in an observation region and receive a signal indicative of a gap between an air seal and a blade tip within the gas turbine engine; and
a controller operable to monitor a plurality of gap data from the bowed rotor sensor indicative of the gap between the air seal and the blade tip of a plurality of blades passing through the observation region and determine a bowed rotor status of the gas turbine engine based on the gap data, and the controller is operable to control rotation of the gas turbine engine based on the bowed rotor status until the gap data received from the bowed rotor sensor meets a modulation amplitude threshold.
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Abstract
According to an aspect, a bowed rotor sensor system for a gas turbine engine is provided. The bowed rotor sensor system includes a bowed rotor sensor operable to transmit a sensing field in an observation region and receive a signal indicative of a gap between an air seal and a blade tip within the gas turbine engine. The bowed rotor sensor system also includes a controller operable to monitor a plurality of gap data from the bowed rotor sensor indicative of the gap between the air seal and the blade tip of a plurality of blades passing through the observation region and determine a bowed rotor status of the gas turbine engine based on the gap data.
150 Citations
20 Claims
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1. A bowed rotor sensor system for a gas turbine engine, the bowed rotor sensor system comprising:
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a bowed rotor sensor operable to transmit a sensing field in an observation region and receive a signal indicative of a gap between an air seal and a blade tip within the gas turbine engine; and a controller operable to monitor a plurality of gap data from the bowed rotor sensor indicative of the gap between the air seal and the blade tip of a plurality of blades passing through the observation region and determine a bowed rotor status of the gas turbine engine based on the gap data, and the controller is operable to control rotation of the gas turbine engine based on the bowed rotor status until the gap data received from the bowed rotor sensor meets a modulation amplitude threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A bowed rotor sensor system for a gas turbine engine, the bowed rotor sensor system comprising:
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a bowed rotor sensor operable to transmit a sensing field in an observation region and receive a signal indicative of a gap between an air seal and a blade tip within the gas turbine engine; and a controller operable to monitor a plurality of gap data from the bowed rotor sensor indicative of the gap between the air seal and the blade tip of a plurality of blades passing through the observation region and determine a bowed rotor status of the gas turbine engine based on the gap data, wherein the gap data modulates as a rotor comprising the blades rotates within the gas turbine engine based on a changing gap between the air seal and the blade tip of the blades. - View Dependent Claims (9, 10)
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11. A method of bowed rotor sensing for a gas turbine engine, the method comprising:
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transmitting a sensing field from a bowed rotor sensor to an observation region within the gas turbine engine; receiving a signal indicative of a gap between an air seal and a blade tip in the observation region; monitoring, by a controller, a plurality of gap data from the bowed rotor sensor indicative of the gap between the air seal and the blade tip of a plurality of blades passing through the observation region; determining a bowed rotor status of the gas turbine engine based on the gap data; and controlling rotation of the gas turbine engine based on the bowed rotor status until the gap data received from the bowed rotor sensor meets a modulation amplitude threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of bowed rotor sensing for a gas turbine engine, the method comprising:
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transmitting a sensing field from a bowed rotor sensor to an observation region within the gas turbine engine; receiving a signal indicative of a gap between an air seal and a blade tip in the observation region; monitoring, by a controller, a plurality of gap data from the bowed rotor sensor indicative of the gap between the air seal and the blade tip of a plurality of blades passing through the observation region; determining a bowed rotor status of the gas turbine engine based on the gap data; and observing a modulation of the gap data as a rotor comprising the blades rotates within the gas turbine engine, the modulation indicative of a changing gap between the air seal and the blade tip of the blades. - View Dependent Claims (19, 20)
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Specification