Safran Aircraft Engines

Snecma

Serge Blanchard

William Bense

Valerio Gerez

Julien Griffaton

François Prost

A method for monitoring at least one engine of an aircraft wherein the aircraft includes a passenger cabin. The method includes a step of acquiring a signal that is at least in part representative of the activity of the engine, using a sensor during a flight of the aircraft, and searching for a defect in the engine by a processing unit using data obtained from the signal. In some embodiments, the sensor is in a mobile device located in the passenger cabin. In some embodiments, the health of the at least one engine uses the signal acquired by a plurality of mobile devices.

Method for monitoring aircraft engines

A method and a system for monitoring an ephemeral event on a vane impeller of an aircraft engine are provided. The method includes: acquiring a time signal relating to movable vanes of the vane impeller; and detecting a disturbance in the time signal with respect to a reference time signal corresponding to a same flight phase, the disturbed time signal being indicative of an ephemeral event on said vane impeller. A system is provided to carry out this method.

System for detecting an ephemeral event on a vane impeller of an aircraft engine

A device for regulating the flow rate of fuel supplied to an aircraft engine, configured to produce a fuel flow rate set value according to a thrust set value supplied by a gas control lever and a measurement of actual thrust of the engine. It extends to a control system including the regulation device and a device for measuring the actual thrust of the engine, to an engine equipped with such a control system, to a regulation method and to a computer program for implementing the method.

Device and method for regulating a motor using a thrust measurement

The invention relates to a method of detecting damage in a bearing supporting at least one rotary shaft of an engine in rotation, the method consisting in: defining a measurement period corresponding to a range of speeds of rotation of the shaft during renewable activity at low speeds of operation of the engine; acquiring over the entire measurement period a vibratory signal representative of acceleration of components of the engine; sampling the vibratory signal as a function of the speed of rotation of the shaft during the measurement period; transforming the sampled vibratory signal into a frequency signal to obtain frequency spectrum lines as a function of the speed of rotation of the shaft; calculating the mean of the amplitudes of the spectrum lines; determining amplitude peaks around multiples of the theoretical frequency of a damaged roller; calculating the ratio between each amplitude peak and the amplitude level determined for a sound bearing; and comparing the ratio that is obtained with at least one predetermined damage threshold.

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Melun, France

Serge Blanchard