Snecma

Xavier Flandrois

Jean-Remi Andre Masse

Christian Aurousseau

Aziz Sif

Jean-Rémi André Masse

Regis Michel Paul Deldalle

Franck Godel

Maurice Georges Vernochet

Thomas Deguin

Benjamin Pierre Lamoureux

Jonathan Benitah

Francois Demaison

Pascal Christophe Contini

Julien Ricordeau

Régis Michel Paul Deldalle

Ouadir Hmad

Mickael Sauzedde

Julien Maille

Gilles Massot

Maxime Forte

David Hadida

Nicholas Alain Bader

Mickael Yves Maurice Sauzedde

Jean-Julien Camille Vonfelt

François Demaison

Regis Michel Deldalle

Jean-Rémi Masse

Mickaël Sauzedde

A method of monitoring oil level in a tank of an aircraft engine, including: for at least two predetermined operating stages of the engine, during at least one mission of the aircraft: obtaining a plurality of measurements of an oil level of the tank, each measurement being associated with an oil temperature and with an engine speed of rotation, and selecting measurements representative of oil level variations and associated with oil temperatures that are close to a reference temperature and with engine speeds of rotation that are close to a reference speed of rotation; aggregating the measurements selected over the operating stages and during the at least one mission of the aircraft; and comparing the aggregated measurements with reference data to identify abnormal oil consumption of the engine.

Method and system for monitoring the level of oil contained in a tank of an aircraft engine

A method monitoring a servo-control loop, including: estimating monitoring parameters from operating data of the servo-control loop; obtaining indicators from the monitoring parameters; determining at least one signature from values of at least some of the indicators; and detecting and locating a degradation affecting the servo-control loop as a function of the at least one determined signature.

Method and a device for monitoring a servo-control loop of an actuator system for actuating variable-geometry components of a turbojet

A device and method for monitoring a high-pressure pump in a turbomachine fuel supply circuit by detecting opening of a pressurizing and shut-off valve mounted on an outlet side of a fuel flow regulating valve, by measuring rotational speed of the turbomachine corresponding to the opening of the pressurizing and cut-off valve, and by monitoring change in a value of the rotational speed to propose replacement of the high-pressure pump when the measure value rotational speed reaches a predetermined threshold.

Monitoring of a high-pressure pump in a turbine engine fuel supply circuit

A method for monitoring a servo-control loop () of an actuator system () for actuating variable-geometry components of a turbojet, said method comprising:

A process for monitoring a machine including moving pieces, a lubrication system and an electromagnetic sensor fitted with a magnet and two electrodes is disclosed. The sensor is capable of collecting particles present in the lubrication system between the electrodes. The monitoring process includes a step for obtaining measurements of resistance between the electrodes of the sensor, taken during an operating period of the machine; a step for determining from said measurements a first autoregressive mathematical model characterizing the resistance; a step for comparison between the first model and a predetermined reference model; and a step for working out an opinion on maintenance of the machine as a function of the comparison result.

Monitoring particles in a lubrication system

A system for monitoring a filter used for filtering a fluid in an aircraft engine. The system includes a pressure sensor acquiring over time a differential pressure of the fluid through the filter; a computer for computing a normalized differential pressure under reference conditions by normalizing the measured differential pressure according to conditions for exploiting the fluid; a memory for storing a predetermined reference clogging curve describing a time-dependent change of the normalized differential pressure depending on a pollutant mass injected into the filter. The computer can estimate the pollutant mass injected into the filter by projecting a current value of the normalized differential pressure onto the reference clogging curve; and can generate from the estimated pollutant mass a set of signatures defining the condition and the time-dependent change of clogging of the filter.

Monitoring a filter used for filtering a fluid in an aircraft engine

The method of the invention for monitoring a thrust reverser of a turbojet having an actuator controlled by an electric motor consists in determining a maintenance notice from a weighted combination of provisional notices, each provisional notice relating to a category of parameters associated with at least one phase of an operating cycle of the reverser, the category being selected from a category of parameters representative of a duration of said phase, of an energy seen by the motor during said phase, of a torque seen by the motor at a predefined instant of said phase, and of a duration during which the setpoint speed of rotation and the measured speed of rotation of the motor differ during said phase, each provisional notice being generated by analyzing values obtained during at least one cycle for at least one parameter of said category relative to a degradation threshold.

Method of monitoring a thrust reverser

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Cesson, France

Xavier Flandrois