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US 9,689,316 B1Granted
Gas turbine engine overspeed prevention
AssigneeTucson Embedded Systems, Inc.
InventorElden Crom
Life of this patent
Estimating the term…
Abstract
A controller for a gas turbine engine is configured to respond to one or more prescribed engine overspeed conditions. Rather than shutting the engine down, the controller substantially reduces N1 airflow and substantially concurrently activates one or more engine igniters.
Claims17
A method for controlling a gas turbine engine, comprising operations of:
- responsive to the engine reaching a first prescribed engine overspeed condition, managing the engine by conducting operations comprising:
- cutting fuel input to idle;
- partially or completely opening one or more bleed bands;
- constricting inlet guide vanes;
- activating one or more engine igniters for a prescribed duration;
- and
- responsive to abatement of the first engine overspeed condition or a second overspeed condition avoiding shutdown of the engine and continuing to operate the engine.
4 more elements
A method for controlling a gas turbine engine, comprising operations of:
- responsive to sensing a prescribed engine overspeed condition, avoiding shutting down the engine and instead performing operations comprising substantially reducing N1 airflow and substantially concurrently activating one or more engine igniters.
A controller configured to manage a gas turbine engine by performing operations comprising:
- responsive to the engine reaching a first prescribed engine overspeed condition, reducing engine fuel input to a predetermined idle level;
- checking whether the engine is running at less than a second overspeed condition, and if so, configuring the engine for predefined normal ongoing operations, otherwise performing operations comprising:
- partially or completely opening one or more bleed bands;
- constricting inlet guide vanes;
- activating one or more engine igniters for a prescribed duration;
- and
- after completing the cutting, opening, constricting, and activating operations, checking whether the engine has reached the second engine overspeed condition, and if so, configuring the engine for the predefined normal ongoing operations, otherwise shutting down the engine.
4 more elements
Dependencies are inferred from the claim text.