Patents by Inventor Mickaël CAVAREC

Mickaël CAVAREC 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: 11891901
    Abstract: A variable-pitch stator blade includes an airfoil having a central portion with a first chord and a first skeleton line delimited by a leading edge and a trailing edge. An end portion has a second chord and a second skeleton line delimited by the leading edge and a downstream limit. A skeleton angle at a first length I1 of the first chord is defined by a function G1(l1), and the skeleton angle at a second length l2 of the second rope being chord is defined by a function G2(l2). The absolute value of the average increase A2 of G2?(l2) between the leading edge and the downstream limit is greater than the absolute value of the average increase Al of Gl?(l1) between the leading edge and a point P, wherein the first length I1 corresponds to the total length of the second chord.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: February 6, 2024
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Mickael Cavarec, Sébastien Claude Cochon, Pierre-Hugues Ambroise Maxime Victor Retiveau
  • Publication number: 20240035385
    Abstract: Assembly comprising a body extending around a central axis, the body having an outer surface from which a plurality of blades extend, each of said blades having a blade root and a blade tip, defining an inner radial end and an outer radial end of the blade relative to the central axis, said blades having the same blade height measured radially relative to the central axis, characterized in that each of the blades is connected to the body by its blade root via a connection having a nonzero connection height, so that for the plurality of said blades, the connection height of two successive blades is different.
    Type: Application
    Filed: February 1, 2022
    Publication date: February 1, 2024
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Sylvain PHOURATSAMAY, Sylvain Frédéric AVAKIAN, Mickael CAVAREC
  • Patent number: 11846194
    Abstract: A set of compression stage(s) of a turbomachine, forming an annular fluid passage and comprising at least one annular stator platform and/or at least one annular rotor platform having an outer longitudinal profile inclined (ISi/IRi) inwards and upstream with respect to a nominal profile of the fluid stream, where the inclination (ISi/IRi) of the outer longitudinal profile of the or each of the annular platforms, relative to the nominal profile of the fluid stream, oscillates along the circumference of the annular platform or platforms, between a maximum value in front of the blades of the annular platform and a minimum value between each pair of adjacent blades of the annular platform.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: December 19, 2023
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Michaël Franck Antoine Schvallinger, Mickael Cavarec
  • Patent number: 11753943
    Abstract: A turbomachine rotor blade includes plural blade sections stacked along an axis between a blade root and a blade head defining between the blade root and the blade head the height of the blade, each blade section including a chord and a maximum sweep defined by the maximum length of a segment perpendicular to the chord line and connecting a point of the chord line and a point of a camber line formed of all points located equidistant from the extrados and the intrados in the section, and verifying that the ratio between the maximum sweep and the chord at mid-height of the blade and the same blade head ratio is between 25% and 40% of the ratio between a maximum sweep and a blade root chord.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: September 12, 2023
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Guillaume Pascal Jean-Charles Gondre, Nicolas Pierre Alain Edme De Cacqueray-Valmenier, Mickaël Cavarec, Sadim Dieudonne
  • Patent number: 11634988
    Abstract: A turbomachine rotor blade is formed of plural blade sections stacked along an axis extending from a blade root to a blade tip. Each blade section located at various heights along the blade is designed to have a given ratio between a maximum thickness, which is measured between a suction side and pressure side of the blade, and a chord, which is defined by a line connecting a leading edge and a trailing edge of the blade. Each blade section is further designed to have a ratio of the maximum thickness to the chord at a given height of the blade relative to a ratio of the maximum thickness to the chord of another blade section located at a different height of the blade.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: April 25, 2023
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Sadim Dieudonne, Mickaël Cavarec, Guillaume Pascal Jean-Charles Gondre, Nicolas Pierre Alain Edme De Cacqueray-Valmenier
  • Publication number: 20230081671
    Abstract: A set of compression stage(s) of a turbomachine, forming an annular fluid passage and comprising at least one annular stator platform and/or at least one annular rotor platform having an outer longitudinal profile inclined (ISi/IRi) inwards and upstream with respect to a nominal profile of the fluid stream, where the inclination (ISi/IRi) of the outer longitudinal profile of the or each of the annular platforms, relative to the nominal profile of the fluid stream, oscillates along the circumference of the annular platform or platforms, between a maximum value in front of the blades of the annular platform and a minimum value between each pair of adjacent blades of the annular platform.
    Type: Application
    Filed: January 22, 2021
    Publication date: March 16, 2023
    Inventors: Michaël Franck Antoine SCHVALLINGER, Mickael CAVAREC
  • Publication number: 20220162954
    Abstract: A variable-pitch stator blade includes an airfoil having a central portion with a first chord and a first skeleton line delimited by a leading edge and a trailing edge. An end portion has a second chord and a second skeleton line delimited by the leading edge and a downstream limit. A skeleton angle at a first length I1 of the first chord is defined by a function G1(I1), and the skeleton angle at a second length I2 of the second chord is defined by a function G2(I2). The absolute value of the average increase A2 of G2?(I2) between the leading edge and the downstream limit is greater than the absolute value of the average increase Al of Gl?(I1) between the leading edge and a point P, wherein the first length I1 corresponds to the total length of the second chord.
    Type: Application
    Filed: April 2, 2020
    Publication date: May 26, 2022
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Mickael CAVAREC, Sébastien Claude COCHON, Pierre-Hugues Ambroise Maxime Victor RETIVEAU
  • Publication number: 20220018259
    Abstract: A turbomachine rotor blade includes plural blade sections stacked along an axis between a blade root and a blade head defining between the blade root and the blade head the height of the blade, each blade section including a chord and a maximum sweep defined by the maximum length of a segment perpendicular to the chord line and connecting a point of the chord line and a point of a camber line formed of all points located equidistant from the extrados and the intrados in the section, and verifying that the ratio between the maximum sweep and the chord at mid-height of the blade and the same blade head ratio is between 25% and 40% of the ratio between a maximum sweep and a blade root chord.
    Type: Application
    Filed: December 10, 2019
    Publication date: January 20, 2022
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Guillaume Pascal Jean-Charles GONDRE, Nicolas Pierre Alain Edme DE CACQUERAY-VALMENIER, Mickaél CAVAREC, Sadim DIEUDONNE
  • Publication number: 20220018257
    Abstract: The invention relates to a turbomachine rotor blade which is characterized in that:—the ratio between the maximum thickness and the chord at 30% of the height of the blade is between 20% and 42% of the ratio between the maximum thickness and the chord at the blade root,—the ratio between the maximum thickness and the chord at 70% of the height of the blade is between 10% and 30% of the ratio between the maximum thickness and the chord at the blade root,—the ratio between the maximum thickness and the chord at 90% of the height of the blade is between 10% and 30% of the ratio between the maximum thickness and the chord at the blade root,—the ratio between the maximum thickness and the chord at the blade head is between 3% and 21% of the ratio between the maximum thickness and the chord at the blade root.
    Type: Application
    Filed: December 10, 2019
    Publication date: January 20, 2022
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Sadim DIEUDONNE, Mickaël CAVAREC, Guillaume Pascal Jean-Charle GONDRE, Nicolas Pierre Alain Edme DE CACQUERAY-VALMENIER
  • Patent number: 11098590
    Abstract: A turbine engine rotor blade including a plurality of blade cross sections stacked along an axis Z between a blade root and a blade tip defining therebetween the height of the blade, each blade cross section including a leading edge (16) and a trailing edge (17) and a chord defined by the length of the segment which extends from the leading edge to the trailing edge and ensuring that: the ratio of the chord at mid-height and of the chord at the blade root is comprised between 140% and 160%; the ratio of the chord at the blade tip and of the chord at the blade root is comprised between 115% and 135%; the chord is locally constant in a blade root zone and in a blade mid-height zone.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: August 24, 2021
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Mickael Cavarec, Sadim Dieudonne, Nicolas Pierre Alain Edme De Cacqueray-Valmenier, Guillaume Pascal Jean-Charles Gondre
  • Publication number: 20200182064
    Abstract: A turbine engine rotor blade including a plurality of blade cross sections stacked along an axis Z between a blade root and a blade tip defining therebetween the height of the blade, each blade cross section including a leading edge (16) and a trailing edge (17) and a chord defined by the length of the segment which extends from the leading edge to the trailing edge and ensuring that: the ratio of the chord at mid-height and of the chord at the blade root is comprised between 140% and 160%; the ratio of the chord at the blade tip and of the chord at the blade root is comprised between 115% and 135%; the chord is locally constant in a blade root zone and in a blade mid-height zone.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 11, 2020
    Inventors: Mickael CAVAREC, Sadim DIEUDONNE, Nicolas Pierre Alain Edme DE CACQUERAY-VALMENIER, Guillaume Pascal Jean-Charles GONDRE