Patents by Inventor Erwan Botrel

Erwan Botrel 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).

  • Publication number: 20180187553
    Abstract: A turbomachine blade including a hollow body defining a cavity, and including a downstream trailing edge. The blade further includes at least one hole which communicates with the cavity and which opens downstream onto the trailing edge. The trailing edge extends along the main radial direction of the blade, and including a downstream convex face. The blade is characterised in that each hole opens onto a planar rear face of a flat region formed in the trailing edge.
    Type: Application
    Filed: July 1, 2016
    Publication date: July 5, 2018
    Applicant: SAFRAN AIRCRAFT ENGINES
    Inventors: Laurent Patrick Robert COUDERT, Erwan BOTREL
  • Patent number: 8672629
    Abstract: A turbine blade including an open cavity at its distal tip, the cavity being defined by a bottom wall and a side wall extending along the perimeter of the distal tip in an extension of the upper and lower walls of the blade, the side wall of the cavity including an opening in a vicinity of the leading edge of the blade opening into the cavity. A deflector extends at least in the middle portion of the cavity between the leading edge and the trailing edge.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: March 18, 2014
    Assignee: SNECMA
    Inventors: Erwan Botrel, RĂ©gis Grohens
  • Patent number: 8496441
    Abstract: When cold and in the uncoated state, the aerodynamic profile is substantially identical to a nominal profile determined by the Cartesian coordinates X, Y, Z? given in Table 1, in which the coordinate Z? is the quotient D/H where D is the distance from the point in question to a reference plane P0 situated at the base of the nominal profile and H is the height of this profile, measured from the reference plane to the tip of the blade. The measurements D and H are taken radially relative to the axis of the turbine, while the coordinate X is measured in the axial direction of the turbine.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: July 30, 2013
    Assignee: SNECMA
    Inventors: Michel Boquet, Erwan Botrel
  • Publication number: 20110135496
    Abstract: A turbine blade including an open cavity at its distal tip, the cavity being defined by a bottom wall and a side wall extending along the perimeter of the distal tip in an extension of the upper and lower walls of the blade, the side wall of the cavity including an opening in a vicinity of the leading edge of the blade opening into the cavity. A deflector extends at least in the middle portion of the cavity between the leading edge and the trailing edge.
    Type: Application
    Filed: March 4, 2009
    Publication date: June 9, 2011
    Applicant: SNECMA
    Inventors: Erwan Botrel, Regis Grohens
  • Publication number: 20100040475
    Abstract: When cold and in the uncoated state, the aerodynamic profile is substantially identical to a nominal profile determined by the Cartesian coordinates X, Y, Z? given in Table 1, in which the coordinate Z? is the quotient D/H where D is the distance from the point in question to a reference plane P0 situated at the base of the nominal profile and H is the height of this profile, measured from the reference plane to the tip of the blade. The measurements D and H are taken radially relative to the axis of the turbine, while the coordinate X is measured in the axial direction of the turbine.
    Type: Application
    Filed: August 13, 2009
    Publication date: February 18, 2010
    Applicant: SNECMA
    Inventors: Michel BOQUET, Erwan BOTREL
  • Publication number: 20070025857
    Abstract: A turbomachine blade presenting a free end having an end wall from which there projects a rim, the rim comprising a first fraction starting from the trailing edge of the blade and running along the suction side of the blade to a connection zone, and a second fraction of closed outline connected to the first fraction at the region of said connection zone. Said second fraction extends the first fraction, running along the suction side of the blade, along the leading edge of the blade, and then returning to the connection zone. The invention is applicable to high pressure turbine blades of a turbojet.
    Type: Application
    Filed: July 25, 2006
    Publication date: February 1, 2007
    Applicant: SNECMA
    Inventors: Jacques Boury, Erwan Botrel
  • Patent number: 7033136
    Abstract: A gas turbine blade of a turbomachine includes in its central portion a centrally-located first cooling circuit at least a suction side cavity, at least a pressure side cavity, at least a central cavity extending between the suction side cavity and the pressure side cavity, a first air admission opening at a radially bottom end of the suction side cavity, a second air admission opening at a radially bottom end of the pressure side cavity, at least a first passage putting a radially top end of the suction side cavity into communication with a radially top end of the central cavity, at least a second passage putting a radially top end of the pressure side cavity into communication with the radially top end of the central cavity, and outlet orifices opening out both into the central cavity and into the pressure side face of the blade.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: April 25, 2006
    Assignee: Snecma Moteurs
    Inventors: Erwan Botrel, Patrice Eneau
  • Publication number: 20050025623
    Abstract: A gas turbine blade of a turbomachine includes in its central portion a centrally-located first cooling circuit at least a suction side cavity, at least a pressure side cavity, at least a central cavity extending between the suction side cavity and the pressure side cavity, a first air admission opening at a radially bottom end of the suction side cavity, a second air admission opening at a radially bottom end of the pressure side cavity, at least a first passage putting a radially top end of the suction side cavity into communication with a radially top end of the central cavity, at least a second passage putting a radially top end of the pressure side cavity into communication with the radially top end of the central cavity, and outlet orifices opening out both into the central cavity and into the pressure side face of the blade.
    Type: Application
    Filed: July 22, 2004
    Publication date: February 3, 2005
    Applicant: SNECMA MOTEURS
    Inventors: Erwan Botrel, Patrice Eneau