Methods and apparatus for operating gas turbine engines
AssigneeGeneral Electric Company
InventorWilliam J. Myers, Jr.
Life of this patent
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Abstract
A method for controlling an aircraft engine using a control system enables an engine to be operated at low power while hail is ingested. The control system includes a processor coupled to the aircraft engine. The method comprises receiving a plurality of sensed inputs from the aircraft engine, receiving current engine environmental operating conditions, determining a reference value for a controlled variable from a fuel flow schedule, generating a fuel-air-ratio for the reference value based on current engine environmental operating conditions, and enriching combustor fuel staging in response to the fuel-air-ratio.
Claims12
A control system for controlling an aircraft engine including a combustor, said control system coupled to the aircraft engine for receiving a plurality of reference inputs from engine sensors coupled to the engine, including at least one input indicative of engine environmental operating conditions, said control system configured to produce a commanded fuel flow in response to engine environmental operating conditions and the engine sensor values, said control system further configured to predicate a fuel-air-ratio at which the combustor will flame-out based on current actual operating conditions.
An aircraft engine fuel control system, said system coupled to the aircraft engine to receive reference inputs from the engine to determine a state of the aircraft engine including at least one input indicative of engine hail ingestion, said system configured to enrich combustor fuel operations in response to engine hail ingestion and the engine sensor values, said fuel control system further configured to predicate a fuel-air-ratio at which the combustor will flame-out based on current actual operating conditions.
Dependencies are inferred from the claim text.