System and method for detecting an uncommanded or uncontrollable high thrust event in an aircraft
AssigneePratt & Whitney Canada Corp.
InventorsJasraj Chahal, Zachary Mounir Faty, Carmine Lisio, Darragh McGrath, Giancarlo Zingaro
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Abstract
System and method for detecting an uncommanded high thrust (UHT) event in an aircraft. The method comprises enabling a UHT function associated with an engine when an enabling condition has been met. When the UHT function is enabled, the UHT event is detected when a power lever of the aircraft is at a given position, a parameter indicative of engine speed or power is above a first threshold, and a rate of change of the engine speed is above a second threshold. In response to detecting the UHT event, an alert is output to trigger accommodations to the UHT event for the engine.
Claims16
A method for operating a powerplant of an aircraft during an uncommanded high thrust (UHT) event of the powerplant, the powerplant including an engine and a variable-pitch propeller driven by the engine, the method comprising:
- enabling a UHT detection function associated with the powerplant when an enabling condition has been met;
- when the UHT detection function is enabled, detecting the UHT event when:
- a power lever associated with the powerplant is at a given position;
- a parameter indicative of engine speed or engine power is above a first threshold;
- a rate of change of the engine speed is above a second threshold;
- and
- the aircraft is in a final approach phase of flight;
- and
- in response to detecting the UHT event:
- outputting an alert to trigger accommodations to the UHT event for the engine;
- automatically commanding the engine of the powerplant to shut down;
- and
- automatically commanding the variable-pitch propeller of the powerplant to feather.
A system for operating a powerplant of an aircraft during an uncommanded high thrust (UHT) event of the powerplant, the powerplant including an engine and a variable-pitch propeller driven by the engine, the system comprising:
- at least one processing unit;
- and
- a non-transitory computer-readable medium having stored thereon program code executable by the at least one processing unit for:
- enabling a UHT detection function associated with the powerplant when an engine when an enabling condition has been met;
- when the UHT detection function is enabled, detecting the UHT event when:
- a power lever associated with the powerplant is at a given position;
- a parameter indicative of engine speed or engine power is above a first threshold;
- a rate of change of the engine speed is above a second threshold;
- and
- the aircraft is in a final approach phase of flight;
- and
- in response to detecting the UHT event:
- outputting an alert to trigger accommodations to the UHT event for the engine;
- automatically commanding the engine of the powerplant to shut down;
- and
- automatically commanding the variable-pitch propeller of the power plant to feather.
Dependencies are inferred from the claim text.