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| Number | Title | Issue Date |
| 7182571 | Variable stator vane actuating levers A variable stator vane actuating lever (50) for use in a compressor (20) of a gas turbine engine (10). The lever (50) comprises a first end (52) for pivotal connection to a stator vane actuator ring (36) and a second end ( | 02/27/2007 |
| 7118346 | Compressor blade A compressor blade (26) comprises an aerofoil (36) and a root (38). The aerofoil (36) comprises a concave wall (40) extending from a leading edge (44) to a trailing edge (46) and a convex wall (42) extending fr... | 10/10/2006 |
| 6923877 | Method and apparatus for improving material properties A method and apparatus for improving the properties of a material of a workpiece by laser shock peening in which an overlay which is opaque to a laser beam, and an overlay which is translucent to said laser beam, are applied to a surface of a workpiece. The transluc... | 08/02/2005 |
| 6840737 | Gas turbine cooling system A stage of guide vanes (20) are cooled by compressor air delivered via piping (36,38) and by leakage air in the space volume (28) bounded by the combustion apparatus (14) and turbine shafting. The leakage air is drawn through tubing (4... | 01/11/2005 |
| 6834790 | Friction welding Blades (20) are friction welded onto a disc (10) to form an integrally bladed rotor. To prevent the formation of defects in the weld interface between the blades (20) and the disc (10) a shielding gas is used. The shielding gas is introdu... | 12/28/2004 |
| 6832890 | Gas turbine engine casing and rotor blade arrangement An arrangement for a gas turbine engine comprises a compressor and its surrounding casing. The casing has a generally cylindrical inner surface, one cylindrical section of the inner casing being provided with a circumferential array of recesses. An axially adjacent ... | 12/21/2004 |
| 6829883 | Turbo fan gas turbine engine having a rotor containment assembly A joint assembly for limiting an extension of the joint in the direction of a load path derived from an impact comprising a first member having a portion and a second member having a portion, the portions overlapping one another and arranged generally parallel to on... | 12/14/2004 |
| 6827548 | Rotor assemblies for gas turbine engines A gas turbine engine 10 includes an intermediate pressure compressor 14 connected to an intermediate pressure turbine 22 by a driveshaft 28. The driveshaft 28 comprises a downstream turbine shaft 34 attached to the intermedi... | 12/07/2004 |
| 6825640 | Generator arrangements A permanent magnet fault tolerant generator 32 is driven by a variable speed shaft 34 to create AC power at terminals 36, converted at 40 to DC power before being applied to a load 38. The converter 40 is a bi-directional de... | 11/30/2004 |
| 6813877 | Gas turbine engine exhaust nozzle having a noise attenuation device driven by shape memory material actuators A gas turbine engine exhaust nozzle arrangement for the flow of exhaust gases therethrough between an upstream end and a downstream end thereof comprising a nozzle and a plurality of tabs which extend in a generally axial direction from a downstream portion of the n... | 11/09/2004 |
| 6808180 | Brush seal A brush seal for sealing between a rotor and a stator of a gas turbine engine includes a housing and a plurality of flexible bristles held within the housing. The bristles protrude from the housing so that a free end of each bristle is able to contact and seal again... | 10/26/2004 |
| 6802122 | Method of manufacturing an article A gas turbine engine (10) fan outlet guide vane (34) is manufactured by diffusion bonding titanium alloy sheet metal workpieces (52, 54) together to form an in integral structure (66). A titanium alloy is weld deposited at predetermined p... | 10/12/2004 |
| 6786389 | Method of manufacturing a fibre reinforced metal component A method of manufacturing a fiber reinforced metal disc comprises forming an annular groove in an axial face of a first metallic ring. A plurality of metal coated fibers are arranged in spiral preforms and a plurality of metallic wires are arranged in spiral preform... | 09/07/2004 |
| 6769864 | Gas turbine engine blade containment assembly A gas turbine engine fan blade containment assembly (38) comprising a generally cylindrical, or frustoconical, metal casing (40) has an upstream portion (56), a transition portion (58) and a blade containment portion (54) and a dow... | 08/03/2004 |
| 6765328 | Shaft bearings An inner rotatable shaft 16 is located within an outer rotatable shaft 18. A stator 52 is provided around the shaft 18. The shaft 18 has a circumferential ring of regions 54a, 54b alternately of relative... | 07/20/2004 |
| 6742783 | Seal segment for a turbine A seal segment (66) as described for a seal segment ring (64) of a turbine (16) in a gas turbine engine (10). The seal segment (66) has an inner surface (70) adapted to face the turbine blades (36) in use. Path means ... | 06/01/2004 |
| 6739049 | Method of manufacturing an article by diffusion bonding and superplastic forming A method of manufacturing a gas turbine engine fan blade (10) comprises forming three metal workpieces (50,52,54). A metal slab (30) is upset forged at both ends (32,34) to produce a metal block (40) with increased thickness (42... | 05/25/2004 |
| 6732591 | Device and method for fatigue testing of materials A device (10) for fatigue testing of materials comprises a frame (14), first and second clamping means (16,18) for holding a specimen (12) to be tested. First and second mounting means (20,22) mount the clamping means (16,18... | 05/11/2004 |
| 6729140 | Electrical machine An electrical machine, such as a generator or motor, is incorporated in a gas turbine engine. The engine has compressor blades which are shrouded at. Beyond the shroud, an electrical machine is provided by rotor projections which run in a channel in flux cores, with... | 05/04/2004 |
| 6726761 | Black high temperature emissivity paint A black high temperature emissivity paint comprises 27.5 wt black pigment, 50.5% acrylic resin and 22 wt % silicone resin excluding solvent. The black pigment comprises (Co,Fe) (Fe,Cr)2 O4 and Ni. The black high temperature emissivity paint is ... | 04/27/2004 |
| 6722847 | Fan for a turbofan gas turbine engine A fan (22) for a turbofan gas turbine engine (10) comprises a fan rotor (24) carrying a first set of circumferentially spaced radially extending fan blades (28) and a second set of circumferentially spaced radially extending fan blades ( | 04/20/2004 |
| 6718774 | Fastener A fastener (31) is disclosed for a first article, for example a tile (29), to a second article for example an outer wall (27) of a wall structure (21, 22) of a combustor (15) of a gas turbine engine (10). The fastener (31... | 04/13/2004 |
| 6701716 | Bleed valve assembly A bleed valve 60 for regulating a fluid flow through a bleed hole 88 defined by a casing 49 of a gas turbine engine 10 compressor 22, the bleed valve 60 comprises a central axis 92, a piston 62 and a static structure 70, the static structure 70 generally ... | 03/09/2004 |
| 6688439 | Vibration damping system and a method of damping vibrations A vibration damping system (8) wherein the system (8) comprises a magnetism generating medium (12) and a magnetism energy dissipating medium (16) whereby, in use, vibration of the magnetism generating medium (12) generates a magnetic field, the magnetism ... | 02/10/2004 |
| 6680667 | Electrical conductor winding and a method of manufacturing an electrical conductor winding An electrical conductor winding (70) comprises a plurality of laminates of electrical insulation (72). Each laminate of electrical insulation (72) has a slot (78) on one surface (76). Each laminate of electrical insulation (70) has an electrical conductor... | 01/20/2004 |
| 6673271 | Temperature indicating paint An irreversible temperature indicating paint comprises 25 wt % to 50 wt % cobalt silicate, 0 wt % to 20 wt % alumino silicate, 0.5 wt % to 5 wt % toluidine red, 25 wt % to 40 wt % acrylic resin and 10 wt % to 20 wt % silicone resin excluding solvent. The ... | 01/06/2004 |
| 6669447 | Turbomachine blade A gas turbine engine fan blade (26) comprises a root portion (40) and an aerofoil portion (42). The aerofoil portion (42) has a leading edge (44), a trailing edge (46), a concave metal wall portion (50) extending from the leading edge (44) to the trailing... | 12/30/2003 |
| 6660115 | Method of manufacturing a ceramic matrix composite A method of manufacturing a ceramic matrix composite comprises forming a slurry comprising a ceramic sol, filler particles and a solvent and forming laminates of fibers (12). The laminates of fibers (12) are impregnated with the slurry and are stacked (14... | 12/09/2003 |
| 6659725 | Vibration damping A vibration damper 46 for a gas turbine engine has convergent friction surfaces 48a and 48b and is located radially inward of the platforms 20a and 20b of two adjacent turbine blades. The angle subtended by the friction surfaces 48a and 48b is smaller tha... | 12/09/2003 |
| 6659712 | Apparatus and method for detecting a damaged rotary machine aerofoil A gas turbine engine (10) comprises a fan rotor (26) having a plurality of fan blades (24) and an apparatus (34) for detecting damage to the fan blades (24). The apparatus (34) comprises a transducer (36) arranged to detect the pressure in the gas flow ar... | 12/09/2003 |
| 6655126 | Overthrust protection system An overthrust protection system for a gas turbine in which fuel is supplied at a controlled flow rate to a combustor (4) of the gas turbine. The overthrust protection system uses a bypass valve (24) to divert fuel flow away from the combustor (4). The ope... | 12/02/2003 |
| 6644914 | Abradable seals A sealing element (30) for a turbine of a gas turbine engine includes a radially inner surface region provided with an integrally formed seal structure (38) comprising a plurality of radially inwardly projecting walls (40). The walls may be abradable and ... | 11/11/2003 |
| 6638008 | Gas turbine engine blade containment assembly A gas turbine engine fan blade containment assembly (38) comprising a generally cylindrical, or frustoconical, metal casing (40) has an upstream portion (56), a transition portion (58) and a blade containment portion (54). The upstream portion (56) has a ... | 10/28/2003 |
| 6638006 | Turbine blade locking device A locking device (36) for use in retaining an assembly of rotor blades against movement around a rotor disc on which they are mounted comprises a body member having first and second portions interconnected by a weakened region (66) whereby a force applied... | 10/28/2003 |
| 6598657 | Mould support arrangement A mold support (110) is disclosed for supporting a plurality of molds (109) in a casting apparatus having a first zone for introducing molten material into the molds and a second zone in which the material in the molds can cool. The mold support (110) is ... | 07/29/2003 |
| 6585034 | Heat exchanger The spiral heat exchanger (10) has a hot end (16) and a cold end (18) arranged at opposite ends of the heat exchanger (10). A first, relatively hot, fluid is supplied to the hot end (16) of the heat exchanger (10) and the first fluid is removed from the c... | 07/01/2003 |
| 6582186 | Vane assembly A vane assembly 40 for use within a gas turbine engine has a main vane portion 42 with an internal cavity 44. A cavity insert 46 is located within the cavity 44, close to the wall 48 to define transpiration cooling paths. Cooling air leaves the insert 46 ... | 06/24/2003 |
| 6575699 | Gas turbine engine and a rotor for a gas turbine engine A rotor (38) for a gas turbine engine (10) has a low emissivity surface finish, or high emissivity surface finish (44), on at least a portion of its surface (42) to reduce temperature differentials between an upper portion and a lower portion of the rotor... | 06/10/2003 |
| 6575694 | Gas turbine engine blade containment assembly A turbofan gas turbine engine (10) comprises a fan rotor (32) carrying a plurality of radially extending fan blades (34). A fan blade containment assembly (38) surrounds the fan blades (34) and the fan blade containment assembly (34) comprises a generally... | 06/10/2003 |
| 6569603 | Light-sensitive composition and method for forming relief image using said composition There are disclosed a light-sensitive composition which comprises (A) a polymer having a phenyl group substituted by a vinyl group at a side chain, (B) a photopolymerization initiator and (C) a sensitizer which sensitizes the photo-polymerization initiato... | 05/27/2003 |
