Patents by Inventor Julien Ricordeau

Julien Ricordeau 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).

  • Method and system for monitoring the level of oil contained in a tank of an aircraft engine
    Patent number: 9540974
    Abstract: 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: Grant
    Filed: April 14, 2011
    Date of Patent: January 10, 2017
    Assignee: SNECMA
    Inventors: Francois Demaison, Xavier Flandrois, Jean-Remi Masse, Gilles Massot, Julien Ricordeau, Ouadir Hmad
  • Method and system for controlling aircraft engine starter/generator
    Patent number: 8979705
    Abstract: A system and a method for controlling an aircraft engine starter/generator. The system includes an AGB of fixed gear ratio for coupling mechanically to a turbine shaft of the engine to enable the engine to be started, a gearbox having multiple gear ratios mechanically coupled to a gearwheel of the AGB, a starter/generator mechanically coupled to a gearwheel of the gearbox, and a controller to cause the gear ratio of the gearbox to be changed as a function of the mode of operation of the starter/generator.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: March 17, 2015
    Assignee: Snecma
    Inventors: Jean Pierre Galivel, Bruno Gaully, Julien Ricordeau
  • METHOD AND SYSTEM FOR MONITORING THE LEVEL OF OIL CONTAINED IN A TANK OF AN AIRCRAFT ENGINE
    Publication number: 20130218399
    Abstract: 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: Application
    Filed: April 14, 2011
    Publication date: August 22, 2013
    Applicant: SNECMA
    Inventors: Francois Demaison, Xavier Flandrois, Jean-Remi Masse, Gilles Massot, Julien Ricordeau, Ouadir Hmad
  • METHOD AND SYSTEM FOR CONTROLLING AIRCRAFT ENGINE STARTER/GENERATOR
    Publication number: 20120122631
    Abstract: A system and a method for controlling an aircraft engine starter/generator. The system includes an AGB of fixed gear ratio for coupling mechanically to a turbine shaft of the engine to enable the engine to be started, a gearbox having multiple gear ratios mechanically coupled to a gearwheel of the AGB, a starter/generator mechanically coupled to a gearwheel of the gearbox, and a controller to cause the gear ratio of the gearbox to be changed as a function of the mode of operation of the starter/generator.
    Type: Application
    Filed: July 7, 2010
    Publication date: May 17, 2012
    Applicant: SNECMA
    Inventors: Jean Pierre Galivel, Bruno Gaully, Julien Ricordeau