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| Number | Title | Issue Date |
| 8123489 | Hollow aerofoil and a method of manufacturing a hollow aerofoil A hollow aerofoil (30) comprises an aerofoil portion (40) having a leading edge (42), a trailing edge (44), a concave pressure surface wall (46) extending from the leading edge (42) to the trailing edge (44) and a con... | 02/28/2012 |
| 8075278 | Shell structure of wind turbine blade having regions of low shear modulus The torsional rigidity of a wind turbine blade affects the twist response of the blade induced by bending moments within the blade. By including regions having a lower modulus of rigidity than the remainder of the blade shell, the torsional rigidity of the blade she... | 12/13/2011 |
| 7980827 | Method and connecting piece for assembling an arm, preferably a windmill arm, in sections Method and connecting piece for assembling a first and a second arm section in extension of one another in order thus to form at least a part of an arm, preferably a windmill arm, where two arm sections are connected to at least one connecting piece for mounting bet... | 07/19/2011 |
| 7891949 | Lightweight composite truss wind turbine blade A lightweight wind turbine blade formed with a truss support structure assembly of composite truss joints including composite spar and cross members attached to and supporting in spaced relation a spine of lightweight rib panels. The rib panels are oriented in paral... | 02/22/2011 |
| 7891948 | Lightweight composite truss wind turbine blade A lightweight wind turbine blade formed with a truss support structure assembly of composite truss joints including composite spar and cross members attached to and supporting in spaced relation a spine of lightweight rib panels. The rib panels are oriented in paral... | 02/22/2011 |
| 7891950 | Lightweight composite truss wind turbine blade A lightweight wind turbine blade formed with a truss support structure assembly of composite truss joints including composite spar and cross members attached to and supporting in spaced relation a spine of lightweight rib panels. The rib panels are oriented in paral... | 02/22/2011 |
| 7832988 | Turbine blade A turbine blade with an aerodynamically profiled blade leaf which is produced from two assembled shell elements is provided. The shell elements forming the suction-side and the pressure-side blade leaf wall have been assembled by a high-temperature and high-pressure... | 11/16/2010 |
| 7785076 | Refractory component with ceramic matrix composite skeleton Aspects of the invention relate to a construction system and method for components in high temperature environments, such as the hot gas path components of a turbine engine. Such a component can include a skeleton and a coating. The skeleton can be formed by a plura... | 08/31/2010 |
| 7458780 | Hollow fan blade for gas turbine engine Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities machined out to reduce weight and form ribs. The ribs extend continuously and without intersecting one another in order to faci... | 12/02/2008 |
| 7413409 | Turbine airfoil with weight reduction plenum An airfoil for a gas turbine engine includes: opposed pressure and suction sidewalls extending between spaced-apart leading and trailing edges, a root, and a tip; and a hollow plenum disposed between the sidewalls. The plenum has a chordwise first dimension at a rad... | 08/19/2008 |
| 7399162 | Wind turbine A fluid turbine, such as a wind or hydro turbine, for generating electrical power, the turbine having a rotor assembly comprising a hub, a rim and a plurality of tensioned cable members joining them together, the cable members being grouped into sets to define a plu... | 07/15/2008 |
| 7334998 | Low-noise fan exit guide vanes Low-noise fan exit guide vanes are disclosed. According to the present invention a fan exit guide vane has an outer shell substantially shaped as an airfoil and defining an interior cavity. A porous portion of the outer shell allows communication between the fluctua... | 02/26/2008 |
| 7334997 | Hybrid blisk A rotor assembly or “blisk” for a gas turbine engine includes a metallic hub having an annular flowpath surface, and at least one blade extending outwardly from the flowpath surface. The blade includes a metallic body having a first density. The metallic body de... | 02/26/2008 |
| 7334333 | Method for making a hollow fan blade with machined internal cavities Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. The floor and opposite interior walls of each cavity are machined simultaneously. The c... | 02/26/2008 |
| 7329102 | Blade With regard to hollow blades for turbine engines, it will be understood there is a problem with respect to percussive impact resulting in excessive distortion of the blade as well as potential failure as a result of blade tip bulging. By provision of ridges 107, ... | 02/12/2008 |
| 7323791 | Louvered horizontal wind turbine A wind turbine, including: a rotatable frame; a plurality of airfoils extending in a direction parallel to an axis of rotation of the rotatable frame; and an enclosure surrounding the rotatable frame, wherein the enclosure comprises a plurality of moveable members c... | 01/29/2008 |
| 7303376 | Turbine airfoil with outer wall cooling system and inner mid-chord hot gas receiving cavity A turbine airfoil usable in a turbine engine and having at least one cooling system. The cooling system may be positioned in an outer wall of the turbine airfoil, and the airfoil may include a hot gas receiving cavity positioned in a mid-chord region of the airfoil.... | 12/04/2007 |
| 7281901 | Free-form welded power system component The present disclosure is directed to a power system component for a work machine. The power system component may include a wheel having one or more free-form welded members. The wheel may include a front end, a back end, and a central, axial spine member extending ... | 10/16/2007 |
| 7258528 | Internally cooled airfoil for a gas turbine engine and method An internally-cooled airfoil for a gas turbine engine, wherein the airfoil comprises at least one substantially chordwise-extending and internally-projecting stiffener located on an internal surface of one of the sidewalls and adjacent to the insert. ... | 08/21/2007 |
| 7252478 | Fan blade modifications A winglet includes a vertical member and a mounting member. The mounting member is configured to facilitate the mounting of the winglet to the tip of a fan blade. The vertical member is configured to extend perpendicularly relative the tip of a fan blade. Adding win... | 08/07/2007 |
| 7217093 | Rotor blade with a stick damper A rotor blade damper is provided that includes a body having a base, a tip, a first contact surface, a second contact surface, a trailing edge surface, and a leading edge surface. The trailing edge and the leading edge surfaces extend between the contact surfaces. T... | 05/15/2007 |
| 7195456 | Turbine engine guide vane and arrays thereof An exit guide vane array for a turbine engine includes a set of guide vanes 28 having a solidity and defining fluid flow passages 74 with a chordwisely converging forward portion 80. The high solidity and convergent passage portion 80 res... | 03/27/2007 |
| 7189064 | Friction stir welded hollow airfoils and method therefor A hollow component for gas turbine engine, for example an outlet guide vane, is assembled from a body having at recessed pocket formed therein, and an aerodynamic cover bonded over the pocket. Both the cover and the body are constructed from materials which are not ... | 03/13/2007 |
| 7179059 | Blade for a wind turbine and a method of assembling laminated profiles for a blade The invention relates to a blade for use on a wind turbine and a method of assembling laminated profiles (3, 5) for a blade for a wind turbine. The development towards increasingly larger blades requires, that the technology of manufacture is reviewed and nov... | 02/20/2007 |
| 7153090 | System and method for passive load attenuation in a wind turbine In accordance with certain embodiments, a wind turbine blade includes an outer skin and an internal support structure. The skin has a closed airfoil shape and includes an outer surface, an inner surface, and opposite sides along a length of the blade. The internal s... | 12/26/2006 |
| 7144222 | Propeller A propeller or propeller blade is manufactured using lattice block material to provide a structure which is generally hollow but for a three-dimensional lattice of support spars. The propeller or propeller blade, being predominately hollow, is substantially lighter ... | 12/05/2006 |
| 7128536 | Damped aerofoil structure A damped airfoil structure comprises an airfoil having a first wall and a second opposing wall, and vibration damping means for damping relative movement of the first and second wall. The damping means comprises at least two cooperating damping elements, a first dam... | 10/31/2006 |
| 7104756 | Temperature tolerant vane assembly A vane assembly 10 suitable for a turbine engine features a refractory vane 12 with an internal cavity 20 and a pair of flexible metallic baffles 26 extending into the cavity from spanwisely opposite ends of the vane. A rigid fastener ... | 09/12/2006 |
| 7104501 | Blade member for airplane It is an object to provide a blade member for an airplane which is simple in structure, and moreover is excellent with respects to weight, aerodynamic performance, cost, strength and durability. A vane of a double-slotted flap includes: an outer skin area surrounded... | 09/12/2006 |
| 7083388 | Double near-net forging of article A method of forming a blade comprising the steps of forging a part comprising a suction side, a pressure side, and a dividing portion of material greater than a portion of material to be sacrificed between the suction side and the pressure side, splitting the part t... | 08/01/2006 |
| 7070391 | Hollow fan blade for gas turbine engine Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming o... | 07/04/2006 |
| 7063506 | Turbine blade with impingement cooling A hollow turbine blade cooled with compressor air is divided into a cooling air chamber (6) and into impingement air cooling chambers (8, 9) by inner, supporting partitions (3, 4). The cooling air is conveyed from the cooling air chamber into th... | 06/20/2006 |
| 7052238 | Hollow fan blade for gas turbine engine A hollow fan blade for turbo fan gas turbine engines is formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming o... | 05/30/2006 |
| 7021899 | Lightened turbomachine blade and its manufacturing process A turbomachine blade includes a metal alloy airfoil having a cavity closed off by a cover on a hollowed side, the cover providing aerodynamic continuity of the hollowed side and being bonded via an edge thereof to the rest of the airfoil by a weld bead. The weld bea... | 04/04/2006 |
| 7018172 | Airfoil surface impedance modification for noise reduction in turbofan engines In accordance with the present invention, an aircraft engine is provided with a component which helps reduce the noise generated by the engine. The component has a first aerodynamic surface, a second aerodynamic surface, and a system for reducing noise without alter... | 03/28/2006 |
| 7008179 | Turbine blade frequency tuned pin bank A gas turbine engine turbine blade includes a hollow airfoil extending radially from a blade root to a radially outer airfoil tip. The airfoil includes an airfoil outer wall having transversely spaced apart pressure and suction side walls meeting along chordally spa... | 03/07/2006 |
| 7001150 | Hollow turbine blade stiffening An apparatus and method for at least one of stiffening a rotor blade of a gas turbine engine and raising a natural vibration frequency of the blade. The blade has a recess extending radially and inwardly into the blade. A reinforcing element is provided in the reces... | 02/21/2006 |
| 6994524 | Hollow fan blade for gas turbine engine Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming o... | 02/07/2006 |
| 6994525 | Hollow fan blade for gas turbine engine Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming o... | 02/07/2006 |
| 6979180 | Hollow component with internal damping A component, for example a fan blade for a gas turbine engine, comprises panels 2 and 4 which define between them a cavity containing a warren girder structure 6. Internal surfaces of the panels 2 and 4 are provided with a damping ... | 12/27/2005 |
