Patent application number | Description | Published |
20080260456 | ASSEMBLY OF A DEVICE SWIVELING ON A BELL CRANK FORK, CONTROL SYSTEM FOR A VARIABLE PITCH FLOW-STRAIGHTENER COMPRISING SAID ASSEMBLY AND AIRCRAFT ENGINE PROVIDED THEREWITH - The assembly comprises a fixed fork ( | 10-23-2008 |
20090116954 | PITCH CONTROL RING FOR STATOR VANES OF A TURBOMACHINE - A turbomachine including a variable-pitch stator vane stage. A control ring that is coaxial around the casing comprises two segments that are assembled together by side connection straps fastened on either side of the segments with mutual insetting and in the vicinity of the ends of the segments. | 05-07-2009 |
20090238681 | Control device of variable pitch vanes in a turbomachine - Control device of variable pitch vanes in a turbomachine, including a ring ( | 09-24-2009 |
20110182716 | SYSTEM FOR CONTROLLING VARIABLE GEOMETRY APPARATUSES IN A TURBINE ENGINE - A control system for controlling at least two variable-geometry devices of a turbomachine, and a turbomachine including such a control system, the system including an actuator that actuates both devices; one of the devices including at least one stage of variable-pitch stator vanes, and the other device being an air-bleed valve for a turbomachine body. The system is configured to control progression opening of the vane stage and progressive closing of the air-bleed valve as an actuation parameter of the actuator increases. As a result, the control system serves advantageously to control two devices using a single control system. | 07-28-2011 |
20120045334 | UNDUCTED FAN WITH VARIABLE-PITCH BLADES FOR A TURBINE ENGINE - A non-streamlined propeller including blades with a variable setting for a turbine engine, the blades of the propeller being rotatably mounted about the axes thereof in radial recesses of a rotor element, and each blade being supported by a plate held in a recess by a sectored ring, and including an inner portion mounted, by interlocking, in a groove of the plate, the ring sectors being inserted into the recess from the inside and locked by a nut screwed onto the plate. | 02-23-2012 |
20120099989 | PROPELLER HUB - A hub of a propeller with variable-pitch blades for a turbine engine, for example for a propfan engine. The hub of the propeller includes a polygonal ring with substantially radial cylindrical recesses distributed about a central axis of the ring for receiving the blades, a turbine rotor element of the turbine engine, and a securing flange that is attached to the ring so as to connect the ring to the rotor element. The hub further includes a plurality of back-up hooks inserted with clearance in openings, the back-up hooks being connected either to the ring or to the rotor element, and the openings being connected to the other one of the two. | 04-26-2012 |
20120128476 | NOZZLE STAGE FOR A TURBINE ENGINE - A nozzle stage for a turbine engine includes two substantially cylindrical rings, respectively an inner ring and an outer ring, with, extending between them: vanes carried by a first one of the rings; vanes carried by the second ring; and spacer-forming vanes interconnecting the two rings; the vanes of the first and second rings being arranged in alternation. | 05-24-2012 |
20120257975 | PROPELLER HUB HAVING A REINFORCED POLYGONAL RING AND TURBINE ENGINE PROVIDED WITH SUCH A HUB - A variable pitch blade propeller hub for a turbomachine with a longitudinal axis includes a polygonal ring supporting the blades, concentric with the longitudinal axis and including two spaced parallel annular end flanges between which are diametrically fastened, by root areas arising from the annular flanges, collars with cylindrical radial housings to receive the blades. The collars are equi-angularly distributed at the lateral periphery of the polygonal ring and separated from each other by intermediate areas with through-openings. The also includes connectors connecting the polygonal ring to a turbine rotor element of the turbomachine. The intermediate areas defined between two concentric collars and the annular end flanges include elements for reinforcing the collars that are arranged radially and/or tangentially and fastened at least to the lateral walls of two consecutive collars. | 10-11-2012 |
20130011261 | ASSEMBLY HAVING A CONTROL DEVICE WITH RACKS FOR CONTROLLING THE ANGULAR POSITION OF PIVOTALLY-MOUNTED BLADES IN A TURBINE ENGINE - An assembly in a turbine engine for controlling plural toothed pivotally-mounted blades arranged in azimuth around the axis of the turbine engine and including an actuator ring controlling a position of the blades. Racks mounted on the ring present corresponding sets of teeth meshing with the set of teeth of a respective one of the blades to place it in a selected angular position, and they are held in the radial direction by radial positioning mechanism fastened to the blade. Each rack is mounted on the ring by plural guides spaced apart circumferentially around the ring, that connect together movements of the rack and of the ring in the circumferential direction, and that are configured to slide relative to the ring, for each guide in its own radial direction, and relative to the rack in a direction of movement that is substantially radial and specific to the rack. | 01-10-2013 |
20130028716 | TURBINE ENGINE HAVING A STAGE OF VARIABLE-PITCH STATOR VANES WITH INDEPENDENT CONTROL - A turbine engine including a stator including variable-pitch vanes that are controlled stage by stage. An actuator ring connected by crank-arms to the variable-pitch vanes is coupled to at least one adjacent specific drive unit in a general form of an actuator. | 01-31-2013 |
20130094943 | UNDUCTED FAN FOR TURBINE ENGINE - An unducted fan of variable-pitch blades including roots engaged from outside in respective radial housings of an annular rotor element and guided to turn about their respective axes by pairs of rolling bearings, one of which is carried by an annular segment of a cylindrical skirt mounted in a groove of the annular body and by a locknut screwed onto the cylindrical skit. The bearing is covered externally by a ring including outer dog-clutch teeth co-operating with inner dog-clutch teeth of the housing to hold the ring axially in the housing. A blocking mechanism is engaged between the teeth of the housing and the teeth of the ring preventing the ring from turning and preventing the ring from being withdrawn axially from the housing. | 04-18-2013 |