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US 11,230,926 B2Granted
High cycle fatigue design for gas turbine engines
AssigneeROLLS-ROYCE plc
InventorDarrell J. Goodwin
Life of this patent
Estimating the term…
Abstract
Devices, systems, and methods for making gas turbine engine component with high cycle fatigue performance include selecting target airfoils while detuning other airfoils. The selective detuning can reduce resource intensity for realistic testing during build. Conforming detuning masses can reduce the need for outside resources.
Claims19
A method of making an airfoil array of a gas turbine engine by high cycle testing, the method comprising:
- selecting one or more target airfoils of the airfoil array having an existing configuration;
- detuning one or more detuned airfoils of the airfoil array other than the one or more target airfoils such that the selected one or more target airfoils are not detuned and the one or more detuned airfoils are detuned, wherein detuning includes securing detuning mass to the one or more detuned airfoils;
- assessing excitation response of the one or more target airfoils to set a maximum excitation response of the one or more target airfoils;
- determining design compliance by comparing the maximum excitation response to a predicted operational response of the airfoil array under operation of the gas turbine engine;
- and
- responsive to determining design compliance, setting airfoil design configuration for the airfoil array as the existing configuration of the one or more target airfoils.
3 more elements
A method of making an airfoil array of a gas turbine engine by high cycle testing, the method comprising:
- selecting one or more target airfoils of the airfoil array having an existing configuration;
- detuning one or more detuned airfoils of the airfoil array other than the one or more target airfoils, wherein detuning includes securing detuning mass to the one or more detuned airfoils;
- assessing excitation response of the one or more target airfoils to set a maximum excitation response of the one or more target airfoils;
- determining design compliance by comparing the maximum excitation response to a predicted operational response of the airfoil array under operation of the gas turbine engine;
- responsive to determining design compliance, setting airfoil design configuration for the airfoil array as the existing configuration of the one or more target airfoils;
- and
- after assessing excitation response of the one or more target airfoils to determine a maximum excitation response, removing detuning mass from one or more select ones of the detuned airfoils and re-assessing excitation response of the one or more target airfoils to set a revised maximum excitation.
4 more elements
A method of making an airfoil array of a gas turbine engine by high cycle testing, the method comprising:
- selecting one or more target airfoils of the airfoil array having an existing configuration;
- detuning one or more detuned airfoils of the airfoil array other than the one or more target airfoils, wherein detuning includes securing detuning mass to the one or more detuned airfoils;
- assessing excitation response of the one or more target airfoils to set a maximum excitation response of the one or more target airfoils;
- determining design compliance by comparing the maximum excitation response to a predicted operational response of the airfoil array under operation of the gas turbine engine;
- and
- responsive to determining design compliance, setting airfoil design configuration for the airfoil array as the existing configuration of the one or more target airfoils,
- wherein assessing excitation response includes subjecting the airfoil array to output from a signal generator, and
- wherein the signal generator includes a sound wave generator.
5 more elements
Dependencies are inferred from the claim text.