Airbus Helicopters

Nayibe Gomez

A method of optimizing the noise generated by a hybrid power plant of a rotorcraft in flight, the hybrid power plant driving a main rotor of the rotorcraft in rotation and being provided with at least one engine, with at least one electric machine, and with at least one electrical energy source that electrically powers the electric machine. The method includes a determination step for determining a required power delivered by the hybrid power plant and that is required for the flight phase, and a distribution step for distributing the required power between the at least one engine and the electric machine as a function of a target noise level and of the required power for the flight phase, as well as of a model for the noise generated by the at least one engine as a function of one of its parameters.

Method of optimizing the noise generated in flight by a rotorcraft

A method of optimizing the noise generated by a rotorcraft on the ground, said rotorcraft including a hybrid power plant, at least one rotor, and an electrical energy source. Said method makes it possible to monitor whether each engine of said power plant is on or off, and to monitor the state of each electric machine of said hybrid power plant. Said method also makes it possible to monitor whether said rotorcraft is on the ground. Then, each engine that is on is controlled to reach an idling speed, or indeed to be caused to stop by being switched off, and said electric machine Is regulated on a setpoint speed of rotation of a rotor so as to drive each rotor while also limiting the noise generated by said hybrid power plant.

Method of optimizing the noise generated on the ground by a rotorcraft

An aircraft () having a rotary wing () and at least one main gearbox () for driving rotation of said rotary wing (), said aircraft () having a first main engine () and a second main engine () driving said main gearbox (), said aircraft () being provided with a main regulation system () regulating the first main engine () and the second main engine () in application of a setpoint that is variable. A secondary engine () is also capable of driving said main gearbox (), said aircraft () having a secondary regulation system () that regulates the secondary engine () in application of a setpoint that is constant and that is independent of said main regulation system ().

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Aix en Provence, France

Nayibe Gomez