Aircraft control system, aircraft control method, and storage medium

An aircraft control system comprising:

• a first engine that is attached to an airframe of an aircraft;
• a second engine that is attached to the airframe of an aircraft;
• a first power generator that is connected to an engine shaft of the first engine;
• a second power generator that is connected to an engine shaft of the second engine;
• an electric motor that is driven with electric power supplied from one or both of the first power generator and the second power generator;
• a rotor that is driven with a driving force output from the electric motor;
• and
• a controller configured to estimate whether noise excess conditions have been satisfied on the basis of information for estimating noise of the first engine and to change one or both of a rotation speed of the first engine and a magnitude of a torque of the first engine such that noise is lower than that before the noise excess conditions have been satisfied when it is estimated that the noise excess conditions have been satisfied,
• wherein the controller is configured to control one or both of the rotation speed of the first engine and the magnitude of the torque of the first engine such that a magnitude of noise of the first engine is lower than a noise reference on the basis of a relationship between the rotation speed of the first engine and the magnitude of the torque of the first engine and the magnitude of noise of the first engine when the noise excess conditions have been satisfied,
• wherein the controller is configured to control one or both of the rotation speed of the first engine and the magnitude of the torque of the first engine such that a fuel efficiency of the first engine is lower than a fuel efficiency reference additionally on the basis of a relationship between the rotation speed of the first engine and the magnitude of the torque of the first engine and the fuel efficiency of the first engine.

An aircraft control method that is performed by a control device for an aircraft, which includes:

• a first engine that is attached to an airframe of the aircraft, a second engine that is attached to the airframe of the aircraft, a first power generator that is connected to an engine shaft of the first engine, a second power generator that is connected to an engine shaft of the second engine, an electric motor that is driven with electric power supplied from one or both of the first power generator and the second power generator, and a rotor that is driven with a driving force output from the electric motor, the aircraft control method comprising:
• estimating whether noise excess conditions have been satisfied at the first engine on the basis of information for estimating noise of the first engine;
• and
• based on the noise excess conditions of the first engine being satisfied and based on a fuel efficiency reference, changing one or both of a rotation speed of the first engine and a magnitude of a torque of the first engine such that noise of the first engine is lower than the noise excess conditions.

A non-transitory computer storage medium for an aircraft, which includes, a first engine that is attached to an airframe of the aircraft, a second engine that is attached to the airframe of the aircraft, a first power generator that is connected to an engine shaft of the first engine, a second power generator that is connected to an engine shaft of the second engine, an electric motor that is driven with electric power supplied from one or both of the first power generator and the second power generator, and a rotor that is driven with a driving force output from the electric motor;

• wherein the non-transitory computer storage medium stores a computer program to be executed by a computer to perform at least:
• a process of estimating whether noise excess conditions have been satisfied on the basis of information for estimating noise of first engines;
• and
• a process of changing, based on the noise excess conditions of the first engine being satisfied and based on a fuel efficiency reference, one or both of a rotation speed of the first engine and a magnitude of a torque such of the first engine that noise of the first engine is lower than the noise excess conditions.