Method for controlling a thrust unit for a propulsion device

A method for correcting the thrust vector delivered by a thrust unit of a thrust system comprising processing means arranged to implement said method, said thrust unit comprising a mechanical rotor moved in rotation by a rotary shaft of an internal combustion engine in response to a power command, said method comprising, iteratively:

• a step of converting a thrust command into a rotation speed setpoint of the shaft of the internal combustion engine of the thrust unit;
• a step of producing an error value between said rotation speed setpoint and the measured rotation speed of said shaft, by a measurement sensor cooperating with said internal combustion engine and with said processing means;
• a step of generating the power command based on said error value between said rotation speed setpoint and the measured rotation speed of said shaft of the internal combustion engine so as to reduce said error value and thus control the rotation speed of the shaft of the internal combustion engine;
• wherein:
• the thrust system also comprises one or more secondary electrical thrusters;
• and wherein said method comprises an iterative step, independent of said speed control of the rotation of the shaft of the internal combustion engine, for generating an actuation command of said one or more secondary electrical thrusters based on said error value between the rotation speed setpoint and the measured rotation speed of the shaft of the internal combustion engine.