Systems and methods for active clearance control based on selected operating mode
AssigneeUnited Technologies Corporation
InventorsLeo J. Veilleux, JR., Thomas O. Harris, Lubomir A. Ribarov
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Abstract
An objective-driven system for blade tip clearance control may comprise a BOAS and a controller in operable communication with the BOAS. A tangible, non-transitory memory may be configured to communicate with the controller, the tangible, non-transitory memory may have instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising receiving an operating objective definition, and modulating a location of the BOAS using an optimization loop comprising the operating objective definition, input vector variables, and output vector variables driven by the input vector variables.
Claims20
An objective-driven system of blade tip clearance control for a gas turbine engine, comprising:
- a blade
- a blade outer air seal disposed radially outward of the blade;
- a controller in operable communication with the blade outer air seal;
- and
- a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising:
- receiving, by the controller, an operating objective definition, and
- modulating, by the controller, a distance between the blade and the blade outer air seal based on the operating objective definition.
A method of objective-driven blade tip clearance control for a gas turbine engine, comprising:
- inputting, into a controller, an operating objective definition;
- determining, by the controller, an optimal distance between a blade of the gas turbine engine and a blade outer air seal disposed radially outward of the blade using an optimization loop comprising the operating objective definition, a plurality of input vector variables, and a plurality of output vector variables driven by the plurality of input vector variables;
- determining, by the controller, an optimal engine climb thrust rating using the optimization loop;
- modulating, by the controller, a distance between the blade and the blade outer air seal based on the optimal distance;
- and
- modulating, by the controller, an engine climb thrust rating based on the optimal engine climb thrust rating.
An objective-driven system for blade tip clearance control, comprising:
- a blade outer air seal;
- a controller in operable communication with the blade outer air seal;
- and
- a tangible, non-transitory memory configured to communicate with the controller, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations comprising:
- receiving, by the controller, an operating objective definition, and
- modulating, by the controller, a location of the blade outer air seal using an optimization loop comprising the operating objective definition, a plurality of input vector variables, and a plurality of output vector variables driven by the plurality of input vector variables.
Dependencies are inferred from the claim text.