Patents by Inventor Xavier Flandrois
Xavier Flandrois has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9540974Abstract: 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.Type: GrantFiled: April 14, 2011Date of Patent: January 10, 2017Assignee: SNECMAInventors: Francois Demaison, Xavier Flandrois, Jean-Remi Masse, Gilles Massot, Julien Ricordeau, Ouadir Hmad
-
Patent number: 9273613Abstract: 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.Type: GrantFiled: October 21, 2011Date of Patent: March 1, 2016Assignee: SNECMAInventors: Christian Aurousseau, Régis Michel Paul Deldalle, Xavier Flandrois, Jean-Rémi André Masse, Aziz Sif, Benjamin Pierre Lamoureux
-
Patent number: 8857150Abstract: 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.Type: GrantFiled: November 18, 2008Date of Patent: October 14, 2014Assignee: SNECMAInventors: Christian Aurousseau, Jonathan Benitah, Xavier Flandrois, Jean-Remi Masse, Mickael Sauzedde, Franck Godel, Julien Maille
-
Patent number: 8831855Abstract: A method for monitoring a servo-control loop (3) of an actuator system (2) for actuating variable-geometry components of a turbojet, said method comprising: an estimation step of estimating a plurality of monitoring parameters from operating data of the servo-control loop (2); an evaluation step of evaluating a plurality of indicators from the monitoring parameters; an evaluation step for evaluating at least one signature matrix, each signature matrix being representative of the values of at least some of the indicators; and a detection and location step of detecting and locating a degradation affecting the servo-control loop as a function of said at least one signature matrix.Type: GrantFiled: October 21, 2011Date of Patent: September 9, 2014Assignee: SNECMAInventors: Jean-Remi Andre Masse, Christian Aurousseau, Regis Michel Paul Deldalle, Xavier Flandrois, Aziz Sif
-
Patent number: 8756026Abstract: 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.Type: GrantFiled: August 15, 2011Date of Patent: June 17, 2014Assignee: SNECMAInventors: Xavier Flandrois, Jean-Rémi André Masse, Maurice Georges Vernochet
-
Publication number: 20130338898Abstract: 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.Type: ApplicationFiled: October 21, 2011Publication date: December 19, 2013Applicant: SNECMAInventors: Christian Aurousseau, Régis Michel Paul Deldalle, Xavier Flandrois, Jean-Rémi André Masse, Aziz Sif, Benjamin Pierre Lamoureux
-
Publication number: 20130218399Abstract: 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.Type: ApplicationFiled: April 14, 2011Publication date: August 22, 2013Applicant: SNECMAInventors: Francois Demaison, Xavier Flandrois, Jean-Remi Masse, Gilles Massot, Julien Ricordeau, Ouadir Hmad
-
Patent number: 8352200Abstract: 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.Type: GrantFiled: August 31, 2010Date of Patent: January 8, 2013Assignee: SnecmaInventors: Pascal Christophe Contini, Xavier Flandrois, Maxime Forte, David Hadida
-
Publication number: 20120109486Abstract: The invention relates to monitoring a redundant measurement system of an aeroengine by means of an electronic unit. The monitoring comprises a step of obtaining first measurements of a physical magnitude measured in said engine, and a step of obtaining second measurements of said physical magnitude. According to the invention, the method includes a step of calculating detection residues as a function of differences between the first and second measurements, a step of determining a mean-jump flag, a step of determining a variance-jump flag, a step of determining a change-of-slope flag, and a step of generating a diagnostic notice as a function of said mean-jump flag, of said variance-jump flag, and of said change-of-slope flag.Type: ApplicationFiled: October 25, 2011Publication date: May 3, 2012Applicant: SNECMAInventors: Stéphane ECOUTIN, Xavier Flandrois, Jean-Rémi André Masse
-
Publication number: 20120101706Abstract: A method for monitoring a servo-control loop (3) of an actuator system (2) for actuating variable-geometry components of a turbojet, said method comprising: an estimation step of estimating a plurality of monitoring parameters from operating data of the servo-control loop (2); an evaluation step of evaluating a plurality of indicators from the monitoring parameters; an evaluation step for evaluating at least one signature matrix, each signature matrix being representative of the values of at least some of the indicators; and a detection and location step of detecting and locating a degradation affecting the servo-control loop as a function of said at least one signature matrix.Type: ApplicationFiled: October 21, 2011Publication date: April 26, 2012Applicant: SNECMAInventors: Jean-Rémi André Masse, Christian Aurousseau, Régis Michel Paul Deldalle, Xavier Flandrois, Aziz Sif
-
Publication number: 20120046896Abstract: 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.Type: ApplicationFiled: August 15, 2011Publication date: February 23, 2012Applicant: SNECMAInventors: Xavier FLANDROIS, Jean-Rémi André Masse, Maurice Georges Vernochet
-
Publication number: 20110054811Abstract: The invention relates to a system for monitoring a filter (3) used for filtering a fluid (5) in an aircraft engine (7), including: pressure measurement means (27) for acquiring over time a differential pressure of the fluid (5) through the filter (3); computing means (11) for computing a normalized differential pressure under reference conditions by normalizing the measured differential pressure according to conditions for exploiting the fluid (5); storage means (13) for storing in memory a predetermined reference clogging curve (Cr) describing a time-dependent change of the normalized differential pressure depending on a pollutant mass injected into the filter (3); computing means (11) for estimating the pollutant mass injected into the filter (3) by projecting a current value of said normalized differential pressure onto said reference clogging curve (Cr); and computing means (11) for generating from said estimated pollutant mass a set of signatures defining the condition and the time-dependent change ofType: ApplicationFiled: August 31, 2010Publication date: March 3, 2011Applicant: SNECMAInventors: Pascal Christophe Contini, Xavier Flandrois, Maxime Forte, David Hadida
-
Publication number: 20100257867Abstract: 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.Type: ApplicationFiled: November 18, 2008Publication date: October 14, 2010Applicant: SNECMAInventors: Christian Aurousseau, Jonathan Benitah, Xavier Flandrois, Jean-Remi Masse, Mickael Sauzedde, Franck Godel, Julien Maille
-
Publication number: 20100242434Abstract: 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.Type: ApplicationFiled: March 22, 2010Publication date: September 30, 2010Applicant: SNECMAInventors: Alain Nicolas BADER, Thomas DEGUIN, Régis Xavier FLANDROIS, André Jean-Rémi MASSE, Maurice Yves Mickaël SAUZEDDE, Camille Jean-Julien VONFELT