Method and system for detecting a shaft shear event
AssigneePratt & Whitney Canada Corp.
InventorsPhilippe BEAUCHESNE-MARTEL, Jeremie HEBERT, Pramuk FERNANDO, Jasraj CHAHAL
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Abstract
The method can include monitoring a current value of a rate of reduction of rotation speed of the shaft, including receiving a plurality of values of rotation speed over time, at a sampling rate below 200 ms, and determining a difference between two non-subsequent ones of said plurality of values of rotation speed; providing a threshold value of a rate of reduction of rotation speed of the shaft; and generating a signal indicative of the shaft shear event when the current value exceeds threshold value.
Claims20
A method of detecting a shaft shear event occurring at a shaft of an engine, the method comprising:
- during operation of the engine, at an engine controller:
- monitoring a current value of a rate of reduction of rotation speed of the shaft, including receiving a plurality of values of rotation speed over time, at a sampling rate below 200 ms, and determining a difference between two non-subsequent ones of said plurality of values of rotation speed;
- providing a threshold value of a rate of reduction of rotation speed of the shaft;
- generating a signal indicative of the shaft shear event when the current value exceeds threshold value.
Dependencies are inferred from the claim text.