CPC F01D 21/003 (2013.01) [F01D 5/06 (2013.01); F02C 7/00 (2013.01); F02C 7/36 (2013.01); F02K 3/06 (2013.01); G01H 1/003 (2013.01); G01H 1/10 (2013.01); G01M 15/14 (2013.01); F02C 3/04 (2013.01); F05D 2220/32 (2013.01); F05D 2240/60 (2013.01); F05D 2260/4031 (2013.01); F05D 2260/80 (2013.01); F05D 2270/304 (2013.01)] | 17 Claims |
1. A drive system of a gas turbine engine, the drive system comprising:
a first drive shaft and a second drive shaft operable to rotate within the gas turbine engine;
a first sensor operable to detect rotation of the first drive shaft;
a second sensor operable to detect rotation of the second drive shaft;
a drive gear system coupled to the first drive shaft and the second drive shaft; and
a processing system coupled to the first sensor and the second sensor, the processing system operable to:
determine a timing variation based on output of the first sensor and output of the second sensor;
determine a torsional deflection between the first drive shaft and the second drive shaft based on the timing variation; and
detect a health status of the drive system based on the torsional deflection, wherein the health status identifies whether a fault condition of the drive gear system is detected based on the torsional deflection.
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