Electronic shaft shear detection conditioning circuit

Details Electronic shaft shear detection conditioning circuit Electronic shaft shear detection conditioning circuit

G - Physics

01

M

G01M 15/14 (2006.01) F01D 21/14 (2006.01) F01D 21/20 (2006.01) F02C 9/46 (2006.01)

Patent

CA 2727221

An electrical control system for distinguishing between an electrical fault and a shaft shear condition in a gas turbine engine, the control system including, in one aspect, a detection circuit including: two or more probes, each probe including an associated resistor having a predetermined range of resistance, and each probe being disposed in the engine adjacent a rotary mounted shaft component, where mechanical interference between one or more of the probes and the shaft component renders the associated resistor substantially non-conductive; sensor processor(s) in communication with each probe, determining a probe operational status based on a measured resistance to current conducted through each probe, and generating a fault code when the measured resistance of at least one of the plurality of probes is not within the predetermined range of resistance.

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