초록 ▼

A fuel control (23) for an aircraft engine (10) employs super contingency logic (76) in response to low rotor speed of a helicopter (130) engine failure (131) or entry into an avoid region of a flight regime following engine failure (133) to alter (161, 166-169) limits on the gas generator (30) of a

A fuel control (23) for an aircraft engine (10) employs super contingency logic (76) in response to low rotor speed of a helicopter (130) engine failure (131) or entry into an avoid region of a flight regime following engine failure (133) to alter (161, 166-169) limits on the gas generator (30) of a free turbine gas engine (10), whereby following engine failure or in periods of extreme power need, risk of stressing an engine to its failure point is undertaken in favor of acquiring enough power to avoid a certain crash.

대표청구항 ▼

A control for an aircraft engine, comprising: means for providing a speed signal indicative of engine speed; means for providing an engine signal indicative of at least one additional engine operating parameter; means for metering fuel to the engine in response to a fuel command signal provided ther

A control for an aircraft engine, comprising: means for providing a speed signal indicative of engine speed; means for providing an engine signal indicative of at least one additional engine operating parameter; means for metering fuel to the engine in response to a fuel command signal provided thereto; and signal processing means for providing, in response to said speed signal and said engine signal, said fuel command signal under constraint of normal engine limits; wherein the improvement comprises: means for providing a flight parameter signal indicative of an aircraft flight parameter directly dependent on engine power; and said signal processing means comprising means responsive to said flight parameter signal for providing a super contingency signal indicative of a need for engine power in excess of engine power available at rated engine conditions, and responsive to said super contingency signal for providing, in response to said speed signal and said engine signal, said fuel command signal under constraint of super contingency engine limits which are higher than said normal engine limits.