Method for optimizing the overall energy efficiency of an aircraft, and main power package for implementing same

摘要

A method and system limiting specific consumption of an aircraft by matching sizing of a power supply to actual power needs of a cabin pressure control system. The method optimizes overall efficiency of energy supplied onboard an aircraft including, in an environment near the cabin, at least one main power-generating engine, sized to serve as a single pneumatic energy-generating source for the cabin and as an at most partial propulsive, hydraulic, and/or electric energy-generating source for the rest of the aircraft. The method minimizes power differential between a nominal point of the power sources when the sources are operating, and a sizing point of non-propulsive energy contributions of the sources when the main engine has failed, by equally dividing power contributions of the main engines and the main power generator under nominal operating conditions and in an event of failure of a main engine.

主权项

1. A method for optimizing overall efficiency of energy supplied aboard an aircraft, the energy being propulsive or non-propulsive, the aircraft including a passenger cabin with regulated air flow, and power sources including at least two main engines, the method comprising:
providing, in an environment located near the cabin, at least one main engine-type power-generating unit sized to serve as a single other pneumatic energy-generating source for the cabin and at most partly as an other propulsive, hydraulic, and/or electric energy-generating source for a rest of the aircraft; and minimizing a power difference between a nominal point of the power sources when the power sources are functioning and a sizing point of non-propulsive energy contributions of the power sources in a situation of failure of a main engine; wherein the minimizing includes
dividing the power under nominal operating conditions equally between the at least two main engines and the main engine-type power generating unit, anddividing the power in the event of the failure of the main engine equally between at least one main engine and the main engine-type power generating unit.