Patents by Inventor Olivier CRASSOUS

Olivier CRASSOUS 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 for suppressing the pogo effect
    Patent number: 10914268
    Abstract: A field of vehicles propelled by reaction, and more specifically to a method of suppressing the pogo effect in such a vehicle. A feed system for feeding a reaction engine of the vehicle includes a hydraulic accumulator enabling a selection to be made from among a plurality of predetermined operating levels, each corresponding to a different volume of gas. In the method, if a first reference criterion is not satisfied by the current level, the hydraulic accumulator is ordered to make a transition, preferably to an alternative level selected from among alternative levels for which the first reference criterion is satisfied and for which no hydraulic resonant frequency crosses any current mechanical resonant frequency during the transition.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: February 9, 2021
    Assignee: ARIANEGROUP SAS
    Inventors: Serge Daniel Le Gonidec, Jeremy Toutin, Alain Kernilis, Olivier Crassous
  • METHOD FOR SUPPRESSING THE POGO EFFECT
    Publication number: 20170226965
    Abstract: A field of vehicles propelled by reaction, and more specifically to a method of suppressing the pogo effect in such a vehicle. A feed system for feeding a reaction engine of the vehicle includes a hydraulic accumulator enabling a selection to be made from among a plurality of predetermined operating levels, each corresponding to a different volume of gas. In the method, if a first reference criterion is not satisfied by the current level, the hydraulic accumulator is ordered to make a transition, preferably to an alternative level selected from among alternative levels for which the first reference criterion is satisfied and for which no hydraulic resonant frequency crosses any current mechanical resonant frequency during the transition.
    Type: Application
    Filed: September 21, 2015
    Publication date: August 10, 2017
    Applicant: SNECMA
    Inventors: Serge Daniel LE GONIDEC, Jeremy TOUTIN, Alain KERNILIS, Olivier CRASSOUS