Patent ID: 6918747

Claim:
A method of detecting damage to the rotor of an aircraft engine including means for measuring vibration and speed in order to acquire data relating to rotor speed and to the amplitude and the phase of rotor vibrations during a determined flight, the method comprising the following steps: reading said acquired data; calculating a mean vibration vector over a determined rotor speed range on the basis of said acquired data, the determined rotor speed range corresponding to a value of 1 to 10% of a nominal speed of the rotor; for said rotor speed range, calculating a vector difference between the mean vibration vector of said determined flight and the mean vibration vector of a reference flight; comparing the modulus of said vector difference with a predetermined threshold value; and issuing a warning signal when the modulus of said vector difference exceeds said predetermined threshold value; wherein said steps are performed after said determined flight has been completed.