Abstract:
The invention relates to a method for determining the angular position of a first turbojet engine rotor, which consists in: generating at least one vibration while the first rotor is rotating, each vibration being generated as the first rotor passes through one and the same reference angular position; detecting the vibrations generated; obtaining (E30) the angular position at a given moment of a second rotor of the turbojet engine with respect to the angular position that it occupied at a reference instant representative of the detection of one of the vibrations, this second rotor being rotationally coupled to the first rotor and having a rotational speed different from that of the first rotor; and determining (E40), from the angular position of the second rotor, the angular position of the first rotor at this given instant.