Patents by Inventor Alain Schweitzer

Alain Schweitzer 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 of optimizing the profile of a composite material blade for rotor wheel of a turbine engine, and a blade having a compensated tang
    Patent number: 10539028
    Abstract: A method optimizing a composite material blade profile for a rotor wheel of a turbine engine, and a blade including a tang compensated by the method. The method includes: compensating a blade airfoil by subdividing the airfoil into slices, and for each airfoil slice and a predetermined rotation speed of a disk of the wheel, calculating centrifugal force applied to the slice, calculating an aerodynamic force moment acting on a bottom section of the slice, and calculating shift values to be applied to a center of gravity of the slice to cancel the aerodynamic force moment; and compensating the blade tang by calculating centrifugal force applied to a blade portion situated beyond the airfoil neck, calculating an aerodynamic force moment acting on a bottom section of the blade tang, and calculating shift values to be applied to a center of gravity of the blade tang to cancel the aerodynamic force moment.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: January 21, 2020
    Assignees: SNECMA, HERAKLES
    Inventors: Sylvain Yves Jean Duval, Clement Roussille, Alain Schweitzer, Patrick Joseph Marie Girard
  • METHOD OF OPTIMIZING THE PROFILE OF A COMPOSITE MATERIAL BLADE FOR ROTOR WHEEL OF A TURBINE ENGINE, AND A BLADE HAVING A COMPENSATED TANG
    Publication number: 20130230404
    Abstract: A method optimizing a composite material blade profile for a rotor wheel of a turbine engine, and a blade including a tang compensated by the method. The method includes: compensating a blade airfoil by subdividing the airfoil into slices, and for each airfoil slice and a predetermined rotation speed of a disk of the wheel, calculating centrifugal force applied to the slice, calculating an aerodynamic force moment acting on a bottom section of the slice, and calculating shift values to be applied to a center of gravity of the slice to cancel the aerodynamic force moment; and compensating the blade tang by calculating centrifugal force applied to a blade portion situated beyond the airfoil neck, calculating an aerodynamic force moment acting on a bottom section of the blade tang, and calculating shift values to be applied to a center of gravity of the blade tang to cancel the aerodynamic force moment.
    Type: Application
    Filed: November 8, 2011
    Publication date: September 5, 2013
    Applicants: HERAKLES, SNECMA
    Inventors: Sylvain Yves Jean Duval, Clement Roussille, Alain Schweitzer, Patrick Joseph Marie Girard
  • Tool wear and/or breakage control device for a machine tool
    Publication number: 20040217873
    Abstract: A tool wear and/or breakage control device for a machine tool includes, in one single unit, through which the three motor supply phases pass completely, all of the components required to measure the active power and/or the active currents absorbed by the motor, and digital means for detecting tool wear and/or breakage in comparison to a reference curve which is established during a first machining operation performed by the tool.
    Type: Application
    Filed: February 6, 2004
    Publication date: November 4, 2004
    Applicant: Digital Way
    Inventors: Alain Schweitzer, Pascale Perrin