US Patent 10228304 Shaft shear detection through shaft oscillation
Patent 10228304 was granted and assigned to Pratt & Whitney Canada on March, 2019 by the United States Patent and Trademark Office.
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There is described a shaft shear event detection method. The method comprises storing in memory a shaft oscillation signature determined as a function of known characteristics of the shaft and associated with a shaft shear event; monitoring a rotational speed of the shaft; detecting from the rotational speed an oscillation wave superimposed on the rotational speed, the oscillation wave having a wave modulation frequency and a wave modulation amplitude; comparing the oscillation signature to the oscillation wave; and detecting the shaft shear event when the oscillation wave corresponds to the oscillation signature.
US Patent 10228304 Shaft shear detection through shaft oscillation
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