Patent application number | Description | Published |
20100126183 | CMC MIXER WITH STRUCTURAL OUTER COWLING - The invention relates to a mixer ( | 05-27-2010 |
20120073306 | GAS TURBINE COMBUSTION CHAMBER MADE OF CMC MATERIAL AND SUBDIVIDED INTO SECTORS - An assembled annular combustion chamber comprises an annular inner wall and an annular outer wall made of ceramic matrix composite material together with a chamber end wall connected to the inner and outer walls and provided with orifices for receiving injectors. Elastically-deformable link parts connect the inner wall and the outer wall of the chamber to inner and outer casings that are made of metal. The assembly formed by the inner wall, the outer wall, and the combustion chamber end wall is subdivided circumferentially into adjacent chamber sectors, each sector being made as a single piece of ceramic composite material and comprising an inner wall sector, an outer wall sector, and a chamber end wall sector. The link parts connect the inner metal casing and the outer metal casing respectively to each inner wall sector of the combustion chamber and to each outer wall sector of the chamber. The chamber end wall sectors are in contact with a one-piece ring to which they are connected. | 03-29-2012 |
20140356094 | ASSEMBLY PROVIDING A CONNECTION THAT IS SELF TIGHTENING WITH TEMPERATURE - An assembly comprising first and second parts made of composite material held one against the other by at least one fastener system comprising a bolt having a flat head from which there extends a threaded portion, and a nut having a flat head from which there extends a shank including tapping suitable for co-operating with the threaded portion of the bolt. The head of the bolt bears against a countersink formed in the first part. The head of the nut bears against a countersink formed in the second part. The fastener system is suitable, during axial expansion of the fastener system, for causing each head to tilt towards the countersink in which it is housed. | 12-04-2014 |
20140369785 | ASSEMBLY PROVIDING A CONNECTION THAT IS SELF TIGHTENING WITH TEMPERATURE - The invention relates to an assembly comprising first and second parts made of composite material and held against each other by at least one fastener system comprising a rivet having a flat head from which there extends a shank having an enlarged end, and a washer co-operating with the enlarged end of the shank of the rivet, the head of the rivet bearing against a countersink formed in the first part, the washer bearing against the second part. On its face remote from its face bearing against the second part, the washer presents a portion of conical shape. The washer also has a central countersink with the enlarged end of the shank of the rivet pressing thereagainst. | 12-18-2014 |
20150083822 | INTEGRATING AFTER-BODY PARTS OF AN AEROENGINE - The invention relates to an aeroengine after-body assembly comprising an exhaust casing made of metal having a plurality of arms extending radially between an inner shroud and an outer shroud. The assembly comprises at least one axisymmetric part made of composite material extending between an upstream end fastened to said exhaust casing and a downstream end that is free. In accordance with the invention, the axisymmetric part has an annular portion at its upstream end, which annular portion includes a plurality of slots defining between them a plurality of resilient fastener tabs. Each slot co-operates with an arm of the exhaust casing, which further includes fastener parts attached to the resilient fastening tabs. | 03-26-2015 |
Patent application number | Description | Published |
20120291441 | INJECTOR DEVICE AND COMBUSTION CHAMBER FOR A TURBOMACHINE PROVIDED WITH SUCH INJECTOR DEVICE - A low-cost combustion chamber injector device that has sturdier construction and is safer for use. Parts are configured specifically to be nested, to dispense with welding between the cellular parts. The device for injecting a fuel-air mix includes, centered on a single axis, a swirl chamber including at least two annular air suction parts, a centering guide, and a retainer ring. The annular parts have cellular conduits connecting to axial inner and outer Venturi tubes. The parts are coaxially mounted, the inner part being configured to be self-centered in the outer part by engagement of the axial and radial walls and then, after assembly, the outer part is welded to the retainer ring and to the inner part in a single radial plane. | 11-22-2012 |
20130047621 | MULTI-PIERCED COMBUSTION CHAMBER WITH COUNTER-ROTATING TANGENTIAL FLOWS - A combustion chamber, for example for a turbine engine, presenting an inner annular wall, an outer annular wall, and a pierced annular chamber end wall extending around an axis, the chamber end wall including at least one opening receiving a fuel injector, the opening being substantially centered on a circular line defining a first chamber end wall portion extending radially between the circular line and the inner annular wall, and a second chamber end wall portion extending radially between the circular line and the outer annular wall. First and second channels are inclined relative to a normal vector normal to the chamber end wall while extending tangentially, the first channels arranged to provide a flow of air in a first rotary direction, the second channels arranged to provide a flow of air in a second rotary direction opposite to the first rotary direction. | 02-28-2013 |
20130305726 | INJECTOR FOR THE COMBUSTION CHAMBER OF A GAS TURBINE HAVING A DUAL FUEL CIRCUIT, AND COMBUSTION CHAMBER PROVIDED WITH AT LEAST ONE SUCH INJECTOR - A starting injector usable in all flight modes without additional cost or weight. The starting injector includes a dual fuel circuit and an air circuit. An injector for a combustion chamber of a gas turbine includes a dual fuel injection circuit including a starting fuel circuit for ignition and then for all the flight modes, and a main fuel circuit for all the flight modes after starting. The circuits include parallel pipes in a common tube having an axis. The pipe of the starting circuit is substantially in communication with a center of a spherical injector body. At the end, the pipe accommodates an injection manifold coupled to a central channel passing through a central wall of a swirler. The pipe of the main circuit is in communication with an annular channel opposite jet channels. An air circuit is guided between two portions shaped as concentric spheres. | 11-21-2013 |
20140260257 | ANNULAR WALL OF A COMBUSTION CHAMBER WITH IMPROVED COOLING AT THE LEVEL OF PRIMARY AND/OR DILUTION HOLES - An annular wall of a combustion chamber of a turbine engine including: a cold side and a hot side; plural dilution holes to allow circulating air of the cold side to enter the hot side for dilution of an air/fuel mixture; plural cooling orifices to allow the circulating air of the cold side to enter the hot side to form a film of cooling air along the annular wall, the cooling orifices distributed spaced axially from one another and with geometric axes inclined, in an axial direction of flow of combustion gases, by an inclination angle relative to a normal to the annular wall; plural additional cooling orifices arranged directly downstream of the dilution holes and distributed spaced axially from one another, with geometric axes arranged in a plane perpendicular to the axial direction and inclined by an angle of inclination relative to a normal to the annular wall. | 09-18-2014 |
20150247459 | TURBINE ENGINE COMBUSTION ASSEMBLY WITH A VARIABLE AIR SUPPLY - A turbine engine combustion assembly including a casing, a combustion chamber, and at least one fuel injector. The combustion chamber includes an internal wall and an external wall extending one inside the other and connected by an annular chamber base wall. The external wall of the chamber is secured to an annular external wall of the casing. The injector is attached to the annular external wall of the casing and includes a fuel ignition enclosure extending inside the casing successively through openings in the casing wall and in the external wall before opening into the chamber. At least one wall of the ignition enclosure extending between the casing wall and the combustion chamber wall includes at least one air intake port. The external wall of the combustion chamber is solidly connected to a device for plugging the air intake port according to a thermal expansion state of the combustion chamber. | 09-03-2015 |
20150260106 | SUPPLY AND DRAIN DEVICE FOR AN INJECTOR - A device for a turbomachine chamber injector, including a conduit having at least a first opening, and a second opening ( | 09-17-2015 |
Patent application number | Description | Published |
20140109721 | PROCESS FOR THE PRODUCTION OF A PINNED END FITTING OF A LONGITUDINAL PART, END FITTING THUS OBTAINED - A process for the production of an end fitting attached to a body in the form of a longitudinal part such as a tube, with the end fitting including a yoke with two arms ( | 04-24-2014 |
20140112700 | PROCESS FOR STRESS RELIEF OF THE STRESSES OF A PINNED END FITTING, STRESS-RELIEVED END FITTING OBTAINED - A process for relieving stresses in an end fitting ( | 04-24-2014 |
20140112708 | PROCESS FOR BONDING TWO PARTS SUBJECTED TO TENSILE FORCES, BONDED PARTS OBTAINED - A process for producing a bonded connection between a first and a second part, with a length of superposition around a longitudinal axis, these parts being subjected to forces in at least one longitudinal direction, includes producing a bonded connection having at least one interior and/or exterior adhesive joint, over a portion of the length between the parts, the joint having a closed or semi-closed cross-section around the longitudinal axis, the thickness of the joint varying from a free edge on the end-fitting side, to the other free edge on the tube side, and following the direction of forces to which the parts are subjected so as to better distribute the overstresses over at least one part of the length. At least one adhesive joint is produced, having in the longitudinal direction a large thickness facing each of its two free edges relative to the thickness in its median part. | 04-24-2014 |