Gas turbine engine health determination
First Claim
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1. A method for determining an engine health factor of an aircraft engine comprising:
- determining, by one or more control devices, an engine condition indicative of an engine health during operation of the aircraft engine, the engine condition comprising a temperature value;
accessing, by the one or more control devices, a baseline engine power model representative of a nominal aircraft engine with a nominal degradation;
wherein the baseline engine power model indicates a relationship between an engine torque and a turbine temperature;
modifying, by the one or more control devices, the baseline engine power model using the determined engine condition; and
determining, by the one or more control devices, an engine health factor including a maximum engine torque of the aircraft engine based on the modified engine power model and a maximum turbine temperature.
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Abstract
A method is provided for determining an updated engine health factor of an aircraft engine. The method includes determining an engine health condition indicative of an engine health during operation of the aircraft engine. The method also includes determining a baseline engine power model for the aircraft engine and modifying the baseline engine power model using the determined engine condition. The method also determines an engine health factor based on a modified engine power model.
33 Citations
20 Claims
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1. A method for determining an engine health factor of an aircraft engine comprising:
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determining, by one or more control devices, an engine condition indicative of an engine health during operation of the aircraft engine, the engine condition comprising a temperature value; accessing, by the one or more control devices, a baseline engine power model representative of a nominal aircraft engine with a nominal degradation; wherein the baseline engine power model indicates a relationship between an engine torque and a turbine temperature; modifying, by the one or more control devices, the baseline engine power model using the determined engine condition; and determining, by the one or more control devices, an engine health factor including a maximum engine torque of the aircraft engine based on the modified engine power model and a maximum turbine temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computing device comprising one or more processors and at least one tangible non-transitory computer-readable medium, the computer-readable medium storing instructions that when executed by the processor perform operations, the operations comprising:
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determining an engine condition indicative of an engine health of an aircraft engine during operation of the aircraft engine, the engine condition comprising a temperature value; accessing a baseline engine power model representative of a nominal aircraft engine with a nominal degradation; wherein the baseline engine power model indicates a relationship between an engine torque and a turbine temperature; modifying the baseline engine power model using the determined engine condition; and determining an engine health factor including a current maximum engine torque of the aircraft engine based on the modified engine power model and a maximum turbine temperature. - View Dependent Claims (13, 14, 15, 16)
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17. A method for determining an engine health factor of an aircraft engine comprising the steps of:
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determining, by one or more control devices, one or more engine limit factors during operation of the aircraft engine; determining, by the one or more control devices, one or more ambient conditions; correcting, by the one or more control devices, the one or more determined engine limit factors to a normalized condition; determining, by the one or more control devices, a baseline engine health factor using a baseline engine power model, based on the one or more determined engine limit factors corrected to the normalized condition, wherein, the baseline engine health factor is representative of a nominal degradation of a nominal aircraft engine; and modifying, by the one or more control devices, the determined baseline engine health factor to a real-time engine health factor based on the determined ambient conditions, using a modified engine power model, wherein the modified engine power model is based on the baseline engine power model and the determined one or more engine limit factors; wherein the steps of modifying comprise; accessing, by the one or more control devices, a baseline engine power model for the aircraft engine which indicates a relationship between an engine torque and a turbine temperature; modifying, by the one or more control devices, the baseline engine power model using the determined engine condition; and determining, by the one or more control devices, an engine health factor including a current maximum engine torque of the aircraft engine based on the modified engine power model and a maximum turbine temperature; wherein it is determined whether the aircraft engine needs to be maintained or overhauled based on the current maximum engine torque. - View Dependent Claims (18, 19, 20)
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Specification