Method and system for regulating power in the event of at least one aircraft engine failure

A method for regulating power in event of failure of at least one aircraft engine including a central digital data processing unit providing an emergency function capable of triggering an emergency signal, the method comprising:

• using an engine-class main power unit, as a GPP, managed by a control and monitoring function and operating constantly in flight, while taking up some of nominal total non-propulsive power of an aircraft, to extend its operational limits on receipt of the emergency signal to be able to supply increased non-propulsive power instantaneously, based on at least three emergency regimes at a time of an engine failure in response to increased consumption demands on the GPP, each emergency regime having a maximum activation period, which is carried over from one regime to another regime and is distributed over plural alternate sequences,
• wherein the regimes comprise, classified in order of decreasing power level, a super-emergency regime, in which all or some of the non-propulsive power, plus additional power, is taken over to attempt to restart the failed engine, a maximum emergency regime, in which all or some of the non-propulsive power is taken over, and an intermediate emergency regime, in which a fraction of non-propulsive power is taken over, corresponding to power remaining constantly available up to an end of the flight,
• wherein the control and monitoring function of the GPP calculates an elapsed time for each emergency regime and informs the central processing unit thereof, while emitting an alarm when maximum operating periods allocated to each emergency regime are exceeded, and
• wherein the emergency function adjusts the non-propulsive power demands made by the aircraft between main engines and the GPP, either automatically or on orders of a pilot, based on information about elapsed time in a regime and a warning that a limit for using one of the at least three emergency regimes has been exceeded.