Patents Assigned to Turbomeca
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Publication number: 20120174587Abstract: A fuel flowmeter for being fed by a pump including an inlet and an outlet, including: a metering valve including an inlet and an outlet, and arranged downstream from the outlet of the pump; a return circuit connecting the inlet of the metering valve to the inlet of the pump; and a pressure regulator device including: a movable valve member to close and open the return circuit, a pressure difference detection surface fastened to the valve member and axially separating a first chamber in communication with the inlet of the metering valve from a second chamber in communication with the outlet from the metering valve, a piston axially separating the second chamber from a third chamber connected to the outlet of the metering valve, and a channel putting the second chamber in communication with the third chamber.Type: ApplicationFiled: August 26, 2010Publication date: July 12, 2012Applicant: TURBOMECAInventors: Philippe Jean Rene Marie Benezech, Bruno Facca, Ludovic Alexandre Leglise, Cedric Roger Zordan
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Publication number: 20120167591Abstract: A free-turbine turboshaft engine including a gas generator including at least one compressor supplied with air, a combustion chamber receiving the compressed air at the output of the compressor, and at least one generator turbine mechanically connected to the compressor by a drive shaft and driven by gases from combustion of fuel carried out in the combustion chamber, and including a free turbine supplied by the gases from the combustion after passing through the generator turbine and which drives a power shaft positioned non-coaxially relative to the drive shaft of the gas generator and supplying the power of the turboshaft engine via a reduction gear. The combustion chamber is a substantially cylindrical or frusto-conical chamber, coaxial with the axis of the generator turbine, and includes a single injector.Type: ApplicationFiled: September 29, 2010Publication date: July 5, 2012Applicant: TURBOMECAInventors: Antoine Drachsler, Alain Michel Perbos, Joel Silet
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Publication number: 20120163957Abstract: A device for supporting a ring of a gas turbine, the ring configured to surround mobile blades of the turbine which are driven by a gas stream flowing upstream to downstream. The device includes at least one upstream hook facing upstream, to be housed in an upstream groove of the ring, opened toward the downstream direction, and at least one downstream hook facing downstream, to be housed in a downstream groove of the ring, opened toward the upstream direction. The hooks are protected and clearances at apexes of the blades are more easily controlled. The device further includes, upstream from the upstream hook, a mechanism injecting cooling gas to cool the upstream hook and/or includes, downstream from the downstream hook, a mechanism injecting a cooling gas to cool the downstream hook.Type: ApplicationFiled: September 2, 2010Publication date: June 28, 2012Applicant: TURBOMECAInventors: Christophe-Olivier Moraines, Frederic Philippe Jean-Jacques Pardo
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Patent number: 8201414Abstract: A turbine engine for a helicopter, including a gas generator and a free turbine driven in rotation by the gas flow generated by the gas generator is disclosed. The turbine engine further includes a motor/generator coupled to a shaft of the gas generator, to provide a quantity of additional rotational kinetic energy to the shaft during a stage of turbine engine acceleration, or to draw a quantity of rotational kinetic energy from the shaft during a stage of turbine engine deceleration.Type: GrantFiled: April 4, 2008Date of Patent: June 19, 2012Assignee: TurbomecaInventors: Edgar Haehner, Gerald Senger
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Publication number: 20120087800Abstract: A centrifugal impeller for a compressor, through which a fluid is to pass. The impeller includes blades each having a leading edge and a trailing edge, the rotation of the impeller sucking fluid in through the front of the impeller, the fluid leaving the impeller via its outer periphery, the trailing edges of the blades being such that in a radial section plane intersecting the trailing edges of the blades, they are curved in the direction opposite to the direction of rotation of the impeller, and the trailing edge portions of the blades are redirected in the direction of rotation of the impeller to form respective end fins serving to deflect the flow of the fluid by redirecting it radially.Type: ApplicationFiled: June 2, 2010Publication date: April 12, 2012Applicant: TURBOMECAInventors: Jerome Porodo, Nicolas Rochuon, Laurent Tarnowski
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Publication number: 20120055169Abstract: A gas turbine engine, in which gases flow upstream to downstream, including a combustion chamber, a high-pressure turbine placed downstream from the combustion chamber, arranged so as to receive combustion gases from the combustion chamber, a free turbine, and an exhaust-gas guide cone attached to the free turbine downstream from the free turbine, the turbine engine emitting sound waves during operation. The guide cone includes a sound suppressor, for example with a Helmholtz resonator structure, with a resonant cavity and a resonator neck in communication with an opening, arranged so as to suppress the sound waves emitted by the turbine engine.Type: ApplicationFiled: May 27, 2010Publication date: March 8, 2012Applicant: TURBOMECAInventors: Eric Jean-Louis Bouty, Pierre-Luc Regaud, Antoine Vallon
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Publication number: 20120036865Abstract: The invention relates to a secondary air system for a compressor of centrifugal or mixed type including a rotor presenting an axis of rotation, said compressor being adapted to compress an oxidizer gas. The secondary air system includes an oxidizer gas bleed system arranged in the rotor.Type: ApplicationFiled: March 31, 2010Publication date: February 16, 2012Applicant: TURBOMECAInventors: Christophe Michel Georges Marcel Brillet, Jérôme Yves Félix Gilbert Porodo, Laurent Pierre Tarnowski
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Publication number: 20120037280Abstract: A method for manufacturing a blank part in Ni-base superalloy, wherein an alloy is prepared and heat treatments are conducted characterized in that: the said superalloy contains at least a total of 2.5% of Nb and Ta; heat treatment is conducted comprising a plurality of steps: a first step at between 850 and 1000° C. held for at least 20 minutes to precipitate the ? phase at the grain boundaries; a second step held at a temperature higher than the temperature of the first step allowing partial dissolution of the ? phase obtained at the first step; ageing treatment comprising a third step and optionally one or more additional steps at a temperature below the temperature of the first step and allowing precipitation of the hardening phases ?? and ??. Part thus obtained.Type: ApplicationFiled: February 5, 2010Publication date: February 16, 2012Applicants: AUBERT & DUVAL, SNECMA, TURBOMECAInventor: Alexandre Devaux
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Publication number: 20120041723Abstract: A data structure for a parts list of a mechanical device, the parts list including at least one set including at least one element selected from a component and a set of components. The structure includes: an identifier of the set; an identifier of the element; at least one link between the identifier of the element and at least one CAD file including a geometrical representation of the element; at least one link between the identifier of the set and at least one data file including a three-dimensional positioning matrix of the at least one element of the set, together with at least one pointer to the CAD file containing the geometrical representation of the element of the set; and a three-dimensional positioning vector for positioning the element in the set.Type: ApplicationFiled: May 3, 2010Publication date: February 16, 2012Applicant: TURBOMECAInventor: Gregory Perasso
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Publication number: 20120020789Abstract: A turbine wheel including: a plurality of first and second blades, at least one of the first blades being adjacent to at least one of the second blades; a disk presenting an axis of rotation and a periphery having the blades mounted thereat, each of the blades including a head solid with a root engaged in a housing that opens to the periphery of the disk, each of the blades including a keying mechanism including a respective shelf arranged between the head and the root of the blade, the shelves of the first blades presenting an azimuth length different from the azimuth length of the shelves of the second blades; and a damper device arranged at least between the adjacent blades, the damper device being arranged between the shelves of the blades and the periphery of the disk.Type: ApplicationFiled: March 31, 2010Publication date: January 26, 2012Applicant: TURBOMECAInventors: Marc Dijoud, Jean-Philippe Ousty
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Publication number: 20110318188Abstract: A mobile wheel for a centrifugal or axial centrifugal compressor for a turbine engine, that includes a base on which a plurality of vanes are attached at their feet and extend between a leading edge and a trailing edge, the trailing edge being inclined at the base of the vane by a slope angle relative to the middle plane extending through the base thereof in the rotation direction of the compressor. The trailing edge has at the head of the vane a slope angle smaller than the slope angle at the vane base.Type: ApplicationFiled: March 10, 2010Publication date: December 29, 2011Applicant: TURBOMECAInventors: Geoffroy Louis Henri Marie Billotey, Jean-Philippe Ousty, Nicolas Rochuon
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Publication number: 20110311366Abstract: A turbine wheel including a plurality of blades, each of the blades presenting an airfoil, a platform, and an attachment member, a disk having the blades mounted at the periphery thereof, the attachment member of each blade being engaged in a housing that opens into a periphery of the disk and extending axially between two opposite faces of the disk, the housings being separated by teeth, and an axial retention device for retaining the blades. The disk includes a first stop member, and the platform of the blade includes a projection projecting axially beyond one of the faces of the disk. The projection includes a second stop member. The axial projection, the second stop member, and the face of the disk together form a groove facing towards the axis of the disk, the groove serving to receive the axial retention device.Type: ApplicationFiled: December 10, 2009Publication date: December 22, 2011Applicant: TurbomecaInventor: Denis Chanteloup
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Patent number: 8074493Abstract: The invention relates to a signaling magnetic plug for a liquid circuit, the plug including a first magnetic electrode and a second magnetic electrode for coming into contact with the liquid flowing in the liquid circuit when the magnetic plug is mounted so as to detect the presence of metal particles that might be contained in the liquid. According to the invention, the plug also includes a preferably non-magnetic intermediate electrode disposed between the first and second magnetic electrodes while also being designed to be in contact with the liquid flowing in the liquid circuit when the magnetic plug is mounted, whereby said plug enables the presence of such metal particles to be detected early.Type: GrantFiled: February 10, 2009Date of Patent: December 13, 2011Assignee: TurbomecaInventors: Philippe Augros, Gérald Senger
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Publication number: 20110299987Abstract: A centrifugal compressor wheel including a hub, a web extending radially from the hub, and a plurality of blades carried by the wheel. The web includes an erosion indicator of the wheel.Type: ApplicationFiled: February 9, 2010Publication date: December 8, 2011Applicant: TURBOMECAInventors: Geoffroy Billotey, Olivier Descubes, Sylvain Gourdant, Olivier Tuot
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Publication number: 20110284318Abstract: The soundproofed exhaust duct for a turbine engine comprises a perforated inner shell defining a flow passage, and a solid outer shell, the inner and outer shells defining between them a space that is closed at the upstream and downstream ends of said space. A core extends between the inner and outer shells at a distance therefrom, and contains at least one sound energy dissipating layer made up of hollow beads that are held against one another. A frame with upstream and downstream portions connected together by longitudinal members supports the core and partitions it into a plurality of boxes that are filled with hollow beads that are held between perforated textures, the frame being secured to the outer shell and/or to the inner shell via at least one of its upstream and downstream portions.Type: ApplicationFiled: January 14, 2010Publication date: November 24, 2011Applicant: TURBOMECAInventors: Jean-Baptiste Arilla, Pierre Michel Baude, Stephane Didier Durand, Isabelle Germaine, Claude Ladeveze
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Publication number: 20110283712Abstract: A device for producing electrical power in a gas turbine or the like of an aircraft, the device including a plurality of thermoelectric cells having a face surrounding a hot source. A cold source is constituted by a cold fluid flowing over the other face of the thermoelectric cells.Type: ApplicationFiled: February 4, 2010Publication date: November 24, 2011Applicant: TURBOMECAInventor: Christophe Brillet
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Publication number: 20110255962Abstract: A diffuser for a mixed flow or centrifugal compressor of a gas turbine. The diffuser includes at least one vane presenting a pressure side, a suction side, and a first flank. The vane includes a plurality of orifices opening out into the suction side and/or the pressure side and communicating with at least one cavity formed in the vane, the cavity extending transversely relative to the vane and opening out into its first flank. The cross section of the cavity varies in the transverse direction of the vane, the cross section increasing towards the first flank.Type: ApplicationFiled: October 15, 2009Publication date: October 20, 2011Applicant: TURBOMECAInventors: Jérôme Porodo, Laurent Tarnowski, Hubert Vignau
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Publication number: 20110250071Abstract: A turbine wheel includes: a plurality of blades, a rotor including a disk having the blades mounted at a periphery thereof, each blade including an airfoil with a foot secured to a platform carrying an attachment member engaged in a housing that opens into the periphery of the disk and that extends axially between two opposite side faces of the disk, the housings being spaced apart from one another by portions of the disk that form teeth, and an axial retention plate retaining the blades on the disk and including a retention plate situated on one side of the disk.Type: ApplicationFiled: December 16, 2009Publication date: October 13, 2011Applicant: TURBOMECAInventors: Jean-Baptiste Arilla, Michel Beaucoueste, Denis Chanteloup, Michel Clastre
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Publication number: 20110236203Abstract: A positioning member for presenting a ring segment for a turbine wheel mounted to rotate about an axis inside a casing. The member presents: a fastener portion for fastening to the casing; a resilient portion forming a spring; and a bearing portion connected to the resilient portion and serving to bear axially against the ring segment such that when the member is mounted the ring segment is pressed axially against a portion of the casing by the positioning member.Type: ApplicationFiled: November 20, 2009Publication date: September 29, 2011Applicant: TurbomecaInventors: Jean-Baptiste Arilla, Denis Chanteloup, Yvan Lameignere
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Patent number: 7993099Abstract: A helicopter gas turbine engine having a combustion chamber, at least one turbine arranged downstream from the combustion chamber to receive combustion gases emitted by the latter and a nozzle is disclosed. The nozzle has one part forming a diffuser, connected downstream from the turbine and an ejector which has an upstream part surrounding the downstream end of the diffuser and defining therewith an outlet passage for an engine compartment cooling air secondary flow, the ejector running in the downstream direction beyond the downstream end of the diffuser. The ejector has a wall formed at least partially by a sound attenuator calculated to attenuate sound frequencies generated by the rotation of the or each turbine and/or by the combustion chamber.Type: GrantFiled: September 13, 2007Date of Patent: August 9, 2011Assignee: TurbomecaInventors: Pierre Michel Baude, Didier Jacques Andre Jouanchicot