Detecting damage to a gas turbine engine
AssigneeROLLS-ROYCE plc
InventorStefano Loreti
Life of this patent
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Abstract
A computer implemented method for detecting a damage to a gas turbine engine. The gas turbine engine includes a fan and a plurality of turbine stages including a low pressure turbine stage. The fan is drivably coupled to the low pressure turbine stage. The method includes receiving a first signal indicative of a speed of rotation of the fan. The method further includes receiving a second signal indicative of a speed of rotation of the low pressure turbine stage. The method further includes determining a difference metric representative of a difference between the speed of rotation of the fan and the speed of rotation of the low pressure turbine stage. The method further includes determining whether a damage event has occurred based on whether the difference metric passes a threshold.
Claims19
A computer-implemented method for detecting damage to a gas turbine engine having a fan and a plurality of turbine stages including a low pressure turbine stage, the fan being drivably coupled to the low pressure turbine stage, the method comprising:
- receiving a first signal indicative of a speed of rotation of the fan;
- receiving a second signal indicative of a speed of rotation of the low pressure turbine stage;
- determining, based on the first signal and the second signal, a difference metric representative of a difference between the speed of rotation of the fan and the speed of rotation of the low pressure turbine stage;
- determining whether a damage event has occurred based on whether the difference metric exceeds a threshold;
- and
- determining an impact energy associated with the determined damage event based on a magnitude of the difference metric.
Dependencies are inferred from the claim text.