Patents Assigned to SNECMA Moteurs
  • Patent number: 8192560
    Abstract: The invention relates to steel which is characterized by the following composition as expressed in percentages by weight: —C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace?50 ppm, —Ni=10.5-15% with Ni?7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace?500 ppm, —Rare earths=trace?500 ppm, —Ti=trace?500 ppm, —O=trace?200 ppm if the steel is obtained by means of powder metallurgy or trace?50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace?100 ppm, —S=trace?50 ppm, —Cu=trace?1%, and —P=trace?200 ppm, the remainder including iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: June 5, 2012
    Assignees: Aubert & Duval, SNECMA Moteurs
    Inventors: Jacques Montagnon, Philippe Heritier, Isabelle Peslerbe, Claude Mons
  • Patent number: 8153056
    Abstract: The invention relates to steel which is characterized by the following composition as expressed in percentages by weight:—C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace?50 ppm, —Ni=10.5-15% with Ni?7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace?500 ppm, —Rare earths=trace?500 ppm, —Ti=trace?500 ppm, —O=trace?200 ppm if the steel is obtained by means of powder metallurgy or trace?50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace?100 ppm, —S=trace?50 ppm, —Cu=trace?1%, and —P=trace?200 ppm, the remainder comprising iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: April 10, 2012
    Assignees: Aubert & Duval, SNECMA Moteurs
    Inventors: Jacques Montagnon, Philippe Heritier, Isabelle Peslerbe, Claude Mons
  • Patent number: 8152938
    Abstract: The invention relates to steel which is characterized by the following composition as expressed in percentages by weight: —C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace—50 ppm, —Ni=10.5-15% with Ni?7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace—500 ppm, —Rare earths=trace—500 ppm, —Ti=trace—500 ppm, —O=Trace—200 ppm if the steel is obtained by means of powder metallurgy or trace—50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace—100 ppm, —S=trace—50 ppm, —Cu=trace—1%, and —P=trace—200 ppm, the remainder including iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: April 10, 2012
    Assignees: Aubert & Duval, SNECMA Moteurs
    Inventors: Jacques Montagnon, Philippe Heritier, Isabelle Peslerbe, Claude Mons
  • Publication number: 20110048583
    Abstract: The invention relates to steel which is characterized by the following composition as expressed in percentages by weight: —C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace?50 ppm, —Ni=10.5-15% with Ni?7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace?500 ppm, —Rare earths=trace?500 ppm, —Ti=trace?500 ppm, ?O=trace?200 ppm if the steel is obtained by means of powder metallurgy or trace?50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace?100 ppm, —S=trace?50 ppm, —Cu=trace?1%, and —P=trace?200 ppm, the remainder including iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained.
    Type: Application
    Filed: August 26, 2010
    Publication date: March 3, 2011
    Applicants: AUBERT & DUVAL, SNECMA MOTEURS
    Inventors: Jacques MONTAGNON, Philippe HERITIER, Isabelle PESLERBE, Claude MONS
  • Publication number: 20110041961
    Abstract: The invention relates to steel which is characterized by the following composition as expressed in percentages by weight: —C=0.18 0.30%, —Co=5-7%, —Cr=2-5%, —Al=1-2%, —Mo+W/2=1-4%, —V=trace 0.3%, —Nb=trace 0.1%, —B=trace-50 ppm, —Ni=10.5-15% with Ni?7+3.5 Al, —Si=trace 0.4%, —Mn=trace 0.4%, —Ca=trace-500 ppm, —Rare earths=trace-500 ppm, —Ti=trace-500 ppm, —O=trace-200 ppm if the steel is obtained by means of powder metallurgy or trace-50 ppm if the steel is produced in air or under a vacuum from molten metal, —N=trace-100 ppm, —S=trace-50 ppm, —Cu=trace-1%, and —P=trace-200 ppm, the remainder including iron and the inevitable impurities resulting from production. The invention also relates to a method of producing a part from said steel and to the part thus obtained.
    Type: Application
    Filed: August 26, 2010
    Publication date: February 24, 2011
    Applicants: AUBERT & DUVAL, SNECMA MOTEURS
    Inventors: Jacques MONTAGNON, Philippe HERITIER, Isabelle PESLERBE, Claude MONS
  • Publication number: 20100254823
    Abstract: A hollow blade includes an internal cooling passage, an open cavity located at the tip of the blade and bounded by an end wall and a rim and cooling channels that connect the internal cooling passage to the outer face of the pressure wall. The cooling channels are inclined to the pressure wall in such a way that they emerge on the outer face of the pressure wall near the top of the rim. A reinforcement of material is present between the rim and the end wall of the cavity along at least one portion of the pressure wall, whereby the rim is widened at its base adjacent to the end wall in such a way that the cooling channels emerge near the top of the rim without reducing the mechanical strength of the tip of the blade.
    Type: Application
    Filed: January 22, 2007
    Publication date: October 7, 2010
    Applicant: SNECMA MOTEURS
    Inventors: Jacques Boury, Maurice Judet
  • Publication number: 20100247755
    Abstract: The invention provides a method of manufacturing or repairing a coating on a metallic substrate. Production of said coating comprises forming a pre-layer on the substrate or on a sub-layer of the coating placed on the substrate by applying one or more layers of a paint containing at least one metal selected from the group constituted by platinum class metals (platinoids) and chromium. Application to the formation or localized repair of a thermal barrier on a superalloy turbo engine part.
    Type: Application
    Filed: June 4, 2010
    Publication date: September 30, 2010
    Applicant: SNECMA MOTEURS
    Inventors: Catherine RICHIN, Alain Siccat
  • Patent number: 7608301
    Abstract: This relates to an improvement to the process of aluminization or activated cementation in which a donor cement containing the aluminium is attacked at high temperature and in a neutral or reducing atmosphere by a gaseous ammonium halide to form a gaseous aluminium halide which decomposes on contact with a nickel-based substrate depositing aluminium metal thereon. According to the invention the aluminium halide is at least partly replaced by a zirconium halide leading to the inclusion of zirconium in the deposit. Improvement in the protection of the hot parts of aircraft engines made of nickel-based superalloy. No figure is to be published.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: October 27, 2009
    Assignees: ONERA (Office National d'Etudes et de Recherches Aerospatiales), SNECMA Moteurs
    Inventors: Marie-Pierre Bacos, Pierre Josso, Serge Naveos
  • Publication number: 20090148283
    Abstract: A compressor nozzle ring for an aircraft includes an inner shroud, an outer shroud and a multiplicity of blades extending from the inner shroud to the outer shroud. Each blade passes through the inner shroud and is attached to it with sealing cement containing an organic polymer adhesive. The adhesive is polyimide based.
    Type: Application
    Filed: September 20, 2006
    Publication date: June 11, 2009
    Applicant: SNECMA MOTEURS
    Inventors: Claude Marcel Mons, Sandra Andrieu, Manuel Girard, Francois Pierre Ribassin
  • Publication number: 20090087572
    Abstract: A method of forming a gas turbine part includes forming a bonding underlayer on a superalloy metal substrate, the underlayer including an intermetallic compound of aluminum, nickel, and platinum, and forming a ceramic outer layer on the alumina film formed on the bonding underlayer. The bonding underlayer essentially comprises an Ni—Pt—Al ternary system constituted by an aluminum-enriched ?-NiPt type structure, in particular an Ni—Pt—Al ternary system having a composition NizPtyAlx in which z, y, and x are such that 0.05?z?0.40, 0.30?y?0.60, and 0.15?x?0.40.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 2, 2009
    Applicant: SNECMA MOTEURS
    Inventors: Bertrand Saint-Ramond, Manuel Silva, John Nicholls, Maxime Carlin
  • Publication number: 20090071119
    Abstract: The invention relates to a method and a device for protecting fuel injectors in a turboshaft engine. The protection is carried out by injecting compressed air directly into the injectors. The air thus directly purges the injectors and evacuates the fuel present in them into the combustion chamber.
    Type: Application
    Filed: June 8, 2005
    Publication date: March 19, 2009
    Applicant: SNECMA MOTEURS
    Inventors: Robert Kervistin, Marion De Giacomoni, Jose Rodrigues, Gilles Rollin
  • Publication number: 20090074579
    Abstract: A turbine ring made up of an assembly of a plurality of sectors forming the outer shroud of the rotor of said turbine. The sectors are united end to end with interposed sealing systems comprising tongues housed in slots, said tongues being rectilinear and engaged in respective rectilinear slots in the radial faces of said sectors.
    Type: Application
    Filed: April 12, 2005
    Publication date: March 19, 2009
    Applicant: SNECMA MOTEURS
    Inventors: Nicolas Hervy, Marc Marchi, Ludovic Nicollas
  • Patent number: 7422644
    Abstract: The present invention provides non-axially symmetrical manufactured parts of thickness less than 10 mm, made of ? or quasi-? titanium alloy, having a core microstructure constituted by whole grains presenting a slenderness ratio greater than 4 and an equivalent diameter lying in the range 10 ?m to 300 ?m. The invention also provides a method of manufacturing the parts by forging.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: September 9, 2008
    Assignee: Snecma Moteurs
    Inventors: Blandine Barbier, Philippe Gallois, Claude Mons, Agathe Venard, Pascal Vignolles
  • Publication number: 20080090100
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 17, 2008
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Publication number: 20080088067
    Abstract: The invention relates to a composite target in the form of a bar made of ceramic powders and designed to be evaporated under an electron beam, the target comprising zirconia and at least one zirconia stabilizer. In characteristic manner, said target is wherein said zirconia stabilizer is at a molar content lying in the range 2% to 30% and wherein said zirconia is formed by more than 90% of a monoclinic phase. The invention is applicable to fabricating a ceramic thermal barrier of low thermal conductivity and high thermomechanical strength formed by evaporation under an electron beam.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 17, 2008
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Bertrand Saint-Ramond, Andre Malie, Christophe Chaput, Isabelle Porte, Cyrille Delage
  • Patent number: 7351030
    Abstract: A connection device between a nozzle and a feed enclosure for feeding cooling fluid to at least one injector in a turbomachine, the device comprises at least one bushing having open axial ends engaged in orifices in a wall of the nozzle and in a wall of the feed enclosure, together with retaining means for retaining the bushing axially, the retaining means being formed to project from an outer cylindrical surface of the bushing between the axial ends of the bushing and at a distance from said ends.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: April 1, 2008
    Assignee: Snecma Moteurs
    Inventors: Jean-Luc Soupizon, Sebastien Imbourg, Philippe Jean Pierre Pabion
  • Patent number: 7347672
    Abstract: A rotor disc includes a rim and a balancing device, which includes housings formed in the rim, and balancing masses housed in at least some of the housings.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: March 25, 2008
    Assignee: Snecma Moteurs
    Inventors: Jean-Louis Bertrand, Frederic Eichstadt, Joel Mathieu
  • Publication number: 20080069959
    Abstract: The invention relates to a ceramic thermal barrier composition of low conductivity and high high-temperature strength. In characteristic manner, the composition comprises a zirconia base, at least one trivalent oxide enabling the zirconia to be stabilized and enabling the thermal conductivity of the zirconia to be reduced in optimum manner, and at least one pentavalent oxide enabling the content of oxygen vacancies to be reduced so as to make it substantially equal to that of a partially stabilized zirconia. Preferably, said trivalent oxide is present with a molar content constituted by a first portion enabling the zirconia to be stabilized partially and a second portion which introduces point defects into the lattice said pentavalent oxide is present with a molar concentration equal to said molar concentration of said second portion of the trivalent oxide. The invention is applicable to making a superalloy machine part having a ceramic coating with said composition, and possibly also a bonding underlayer.
    Type: Application
    Filed: November 23, 2007
    Publication date: March 20, 2008
    Applicants: SNECMA MOTEURS, SNECMA SERVICES
    Inventors: Berangere Leclercq, Remy Mevrel, Alban Azzopardi, Andre Malie, Bertrand Saint-Ramond
  • Publication number: 20080060341
    Abstract: The invention relates to a turbine engine (1) with a semi-fixed turbine, particularly for aircraft driving a receiver (2) controlled so as to preserve a roughly constant rotation speed. The turbine engine, in particular via a gear system (20), drives the receiver and an LP compressor (6) with an LP turbine (14). According to the invention, the gear system has a torque control system (26) maintaining a constant ratio between the drive torque of the receiver transmitted by the gear system and the drive torque of the LP compressor transmitted by this same gear system.
    Type: Application
    Filed: January 4, 2005
    Publication date: March 13, 2008
    Applicant: SNECMA MOTEURS
    Inventor: Jean Loisy
  • Patent number: 7340882
    Abstract: The turbomachine of the invention extends longitudinally along an axis, and includes a rotor attached to drive shaft, arranged to rotate around an axis, supported by at least a first bearing, mounted on the fixed structure of the turbomachine by a bearing support element. The turbomachine is characterised by the fact that it includes a stop ring, mounted on the fixed structure of the turbomachine, to cooperate with the support element of the first bearing and, in the event of displacement of the rotor in relation to the fixed structure, to perform a function of axial retention of the rotor in an even manner, with no angle effect between the axis of the turbomachine and the axis of the drive shaft.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: March 11, 2008
    Assignee: Snecma Moteurs
    Inventors: Guy Lapergue, Regis Servant, Gael Bouchy, Alain Baum