Process and system for detecting aircraft engine rotor damage

Details Process and system for detecting aircraft engine rotor damage Process and system for detecting aircraft engine rotor damage

G - Physics

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G01M 15/00 (2006.01) B64D 47/00 (2006.01) F01D 21/04 (2006.01) F01D 25/04 (2006.01) G01H 1/00 (2006.01) G01M 1/14 (2006.01) G06F 19/00 (2006.01)

Patent

CA 2430153

A method and system for detecting damage to the rotor of an aircraft engine using devices for measuring vibration and speed in order to acquire data relating to the speed of the rotor and also to the amplitude and the phase of rotor vibration during a determined flight. The method includes the following steps: reading (10) the acquired data; calculating (20, 30, 40) a mean vibration vector over a determined rotor speed range on the basis of the acquired data; calculating (61) a vector difference between the mean vibration vector of the determined flight and the mean vibration vector of a reference flight for the rotor speed range; comparing (90) the modulus of the vector difference with a predetermined threshold value; and issuing a warning signal when the modulus of the vector difference exceeds the predetermined threshold value, the steps being performed after the determined flight has been completed.

L'invention concerne la détection d'endommagement de rotor d'un moteur d'aéronef comprenant des moyens de mesure de vibration et de vitesse pour l'acquisition de données relatives à la vitesse du rotor ainsi qu'à l'amplitude et à la phase des vibrations du rotor pendant un vol déterminé et comportant les étapes suivantes : lecture (10) desdites données acquises, calcul (20, 30, 40) d'un vecteur vibration moyen sur un intervalle de vitesse de rotor déterminé à partir desdites données acquises, calcul (61) d'une différence vectorielle entre le vecteur vibration moyen dudit vol déterminé et le vecteur vibration moyen d'un vol de référence pour ledit intervalle de vitesse rotor, comparaison (90) du module de ladite différence vectorielle avec une valeur seuil prédéterminé, et émission d'un signal d'alerte lorsque le module de ladite différence vectorielle excède ladite valeur seuil prédéterminée, lesdites étapes étant réalisées à l'issue dudit vol déterminé.

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