Formed With Main Spar Patents (Class 416/226)
  • Patent number: 10914285
    Abstract: A spar cap for a rotor blade of a wind power installation, having a longitudinal extent from a first end to a second end, a transverse extent orthogonal to the longitudinal extent, and a thickness orthogonal to the longitudinal extent and to the transverse extent. A method for producing a spar cap as mentioned at the outset.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: February 9, 2021
    Assignee: Wobben Properties GmbH
    Inventors: Florian Rubner, Daniel Vinke
  • Patent number: 10858090
    Abstract: A composite assembly has an outer spar component having an outer spar component inner profile, an inner spar component having an inner spar component outer profile substantially complementary to the outer spar component inner profile, and an adhesive disposed between the outer spar component and the inner spar component.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: December 8, 2020
    Assignee: BELL TEXTRON INC.
    Inventors: Ronald J. Measom, Mitchell Elvin Rains
  • Patent number: 10830205
    Abstract: The present disclosure is directed to a modular rotor blade constructed of thermoset and/or thermoplastic materials for a wind turbine and methods of assembling same. The rotor blade includes a pre-formed main blade structure constructed, at least in part, from a thermoset material. The rotor blade also includes at least one blade segment configured with the main blade structure. The blade segment(s) is constructed, at least in part, of a thermoplastic material reinforced with at least one fiber material.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: November 10, 2020
    Assignee: General Electric Company
    Inventors: James Robert Tobin, Christopher Daniel Caruso, Aaron A. Yarbrough, Daniel Alan Hynum
  • Patent number: 10822954
    Abstract: A rotorcraft rotor blade assembly includes a stub spar extending less than a full span of the rotor blade assembly. An upper skin portion extends substantially the full span of the rotor blade assembly. A lower skin portion extends substantially the full span of the rotor blade assembly. The stub spar is positioned between the upper skin portion and the lower skin portion.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: November 3, 2020
    Assignee: BELL HELICOPTER TEXTRON INC.
    Inventors: Paul K. Oldroyd, Drew Sutton, Andrew Maresh, Christopher Foskey
  • Patent number: 10794359
    Abstract: A jointed wind turbine rotor blade includes a first blade segment and a second blade segment extending in opposite directions from a chord-wise joint line. Each of the blade segments includes a pressure side shell member and a suction side shell member. A sealing tape is applied over the shell members so as to bridge across the chord-wise joint line. The sealing tape includes side edges that are aligned parallel with airflow over the shell members at the chord-wise joint line at a defined load and operational condition on the jointed wind turbine blade.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: October 6, 2020
    Assignee: General Electric Company
    Inventors: Thomas Merzhaeuser, Andreas Herrig
  • Patent number: 10773432
    Abstract: The invention concerns a method for the production of a composite component from at least one hollow profile base element and at least one supporting element positioned in the interior of the at least one hollow profile base element.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: September 15, 2020
    Assignee: LANXESS Deutschland GmbH
    Inventor: Boris Koch
  • Patent number: 10760544
    Abstract: A jointed rotor blade assembly may include a first blade segment having a first outer shell terminating at a first joint end and a second blade segment coupled to the first blade segment at a blade joint. The second blade segment may include a second outer shell terminating at a second joint end. The outer shells may overlap one another at the blade joint such that an overlapping region is defined between the first and second joint ends. In addition, the first outer shell may be spaced apart from the second outer shell along at least a portion of the overlapping region such that a gap is defined between the outer shells within the overlapping region. Moreover, the rotor blade assembly may include a sealing member positioned between the outer shells within the overlapping region that is configured to allow relative movement between the outer shells at the blade joint.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 1, 2020
    Assignee: General Electric Company
    Inventors: Aaron A. Yarbrough, Christopher Daniel Caruso, Donald Joseph Kasperski, Daniel Alan Hynum
  • Patent number: 10723090
    Abstract: The present disclosure provides a method of manufacturing a composite laminate structure of a wind turbine blade part by means of resin transfer moulding, preferably vacuum-assisted resin transfer moulding. In a resin transfer moulding, fibre-reinforcement material is impregnated with liquid resin in a mould cavity. The mould cavity comprises rigid mould part having a mould surface defining a surface of the wind turbine blade part. The method comprises alternately stacking on the rigid mould part: i. a number of unidirectional fibre-reinforcement layers comprising electrically conductive fibres, such as carbon fibres, and ii.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 28, 2020
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Lars Nielsen, Klavs Jespersen
  • Patent number: 10710712
    Abstract: An afterbody for a rotor blade of a rotorcraft is unitarily formed of a single material of construction. The afterbody includes an upper surface disposed from a lower surface, a concave leading edge connected to the upper surface and the lower surface, and a trailing edge formed at an intersection of the upper surface with the lower surface.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: July 14, 2020
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Joel J. McIntyre, Michael Christopher Burnett
  • Patent number: 10690111
    Abstract: The present disclosure is directed to a rotor blade that includes a shell defining an interior cavity. The rotor blade also includes exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge. Each of the pressure side, the suction side, the leading edge, and the trailing edge extends between a tip and a root. The shell defines a span and a chord. A shear web is positioned in the interior cavity and coupled to the shell. The shear web includes a lattice structure.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 23, 2020
    Assignee: General Electric Company
    Inventors: Stephen Bertram Johnson, Anne Parsons Kyriakides
  • Patent number: 10682687
    Abstract: The present disclosure is generally directed to a core configured for the manufacturing of a turbine engine blade by lost-wax casting. The core includes a first convex curved outer face and a second concave curved outer face. The first and second faces have a plurality of recesses, each recess including a spherical portion.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: June 16, 2020
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Coralie Cinthia Guerard, Vincent Marc Herb, Jun Ni, Joseph Toussaint Tami Lizuzu, Matthieu Jean Luc Vollebregt
  • Patent number: 10677216
    Abstract: Wind turbine rotor blade components including pultruded rods and methods of manufacturing the same are disclosed. More specifically, the rotor blade component includes a plurality of pultruded rods housed within an enclosed primary outer casing. The enclosed primary outer casing includes a hollow interior, a root end, and an opposing tip. As such, each of the plurality of pultruded rods is received within the enclosed primary outer casing and secured therein via a first resin material. Further, an arrangement of the plurality of pultruded rods within the primary outer casing and a relationship of a maximum dimension of each of the plurality of pultruded rods and a maximum dimension of the enclosed primary outer casing are configured to maximize flexibility of the rotor blade component.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 9, 2020
    Assignee: General Electric Company
    Inventors: Bensely Albert, Nicholas K. Althoff, Jamie T. Livingston, Stephen Bertram Johnson
  • Patent number: 10668648
    Abstract: A mould for moulding a wind turbine blade or an elongate structural part thereof, the mould comprising a plurality of longitudinal elongate mould sections adapted to be fitted together in an end-to-end relationship to form a unitary mould, each mould section having a central mould portion between opposite end portions, each mould section being composed of a fibre reinforced resin matrix composite material, at least one end portion of each mould section forming an integral flange oriented substantially orthogonally downwardly with respect to an upper surface of the mould section, and the upper surface including a moulding surface and a recess located between the flange and the moulding surface, the recess extending across a transverse width of the mould section whereby when the flanges of adjacent mould sections are fitted together in an abutting relationship, the adjacent recesses form a combined recess separating the moulding surfaces of the adjacent mould sections.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: June 2, 2020
    Assignee: Suzhou Red Maple Wind Blade Mould Co., Ltd.
    Inventors: Yiqiang Fan, Qiang Gao, Junyu Min, Xiudong Ying, Jun Gao, Rongying Wu
  • Patent number: 10669036
    Abstract: A turbofan engine including a core engine and at least one fan by means of which fluid is guided to a primary flow channel for the core engine as well as to a secondary flow channel of the turbofan engine, wherein the secondary flow channel is provided for an outer fluid flow that is guided past the core engine, and at least one splitter fairing arranged inside the secondary flow channel around which the fluid flow is flowing during operation of the turbofan engine, which cases at least one component of the turbofan engine that is guided radially through the secondary flow channel, and which has an end element with a leading edge section that is facing towards the fluid flow and/or a trailing edge section that is positioned in the flow direction of the fluid flow.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: June 2, 2020
    Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventor: Robert Thies
  • Patent number: 10662920
    Abstract: The invention relates to a rotor blade of a wind power plant having two rotor blade half-shells (1, 21) with in each case a leading-edge periphery and a trailing-edge periphery (8a, 22a), which rotor blade half-shells are adhesively fastened to each other along the leading-edge and trailing-edge peripheries (8a, 22) and which in case have a trailing-edge girder (3, 25), and each of the trailing-edge girders (3, 25) at least in certain sections is of rectangular design in a cross section along its longitudinal extent.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 26, 2020
    Assignee: Senvion GmbH
    Inventors: Urs Bendel, Markus Werner, Julian Ramm, Enno Eyb, Lenz Zeller
  • Patent number: 10648485
    Abstract: An ceiling fan comprising a motor system. The motor system is mounted around a motor shaft. The motor shaft couples to a downrod for suspending the ceiling fan from a structure. The motor shaft and motor are encased by a motor housing. The motor housing comprises hub arms for mounting a plurality of blade holders. The blade holders coupled to a plurality of blades rotatable about the motor during operation. The downrod comprises a wire disk mounting guy wiring to the downrod. A retention rod is utilized internal of the motor and downrod as a secondary retention method. An electrical connector is internal of the motor shaft and electrically couples to the stator to power the motor.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: May 12, 2020
    Assignee: Hunter Fan Company
    Inventors: Phillip Santolucito, Agustin Chacon
  • Patent number: 10632689
    Abstract: A method of making a wind turbine blade, and the turbine blade resulting form the process, is described in which correct alignment of the shear webs (42a, 42b) upon mould (30) closing is ensured. The method involves providing a first half shell (32a) and a second half shell (32b) to be joined together to form the wind turbine blade. A first edge (46) of a shear web (42) is attached to an inner surface (36a) of the first half shell (32a). A shear web mounting region is defined on an inner surface (36b) of the second half shell (32b). At least one guide block (60a, 60b) is attached to the inner surface (36b) of the second half shell (32b) adjacent to the shear web (42) mounting region. The guide block (60a, 60b) has a guide surface (70) oriented transversely to the inner surface of the second half shell (36b).
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: April 28, 2020
    Assignee: Vestas Wind Systems A/S
    Inventors: Brian Birkemose, Kim Linddal Kristensen
  • Patent number: 10604234
    Abstract: In a first aspect, there is a method for improving a lift to drag ratio of a rotor blade, including providing a blade member having a leading edge and a trailing edge; providing a leading edge extension member; and coupling the leading edge extension member to a portion of the leading edge of the blade member to form the rotor blade. In a second aspect, there is a rotor blade including a blade member having a leading edge, and a trailing edge; and a leading edge extension member disposed on the leading edge of the blade member, wherein the leading edge extension member is configured to extend the chord length of at least a portion of the rotor blade. In a third aspect, there is a leading edge extension member for a rotor blade including a convex exterior surface configured to extend at least a portion of the chord length of the rotor blade.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: March 31, 2020
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Christopher E. Foskey, Brendan P. Lanigan
  • Patent number: 10570879
    Abstract: A joint assembly for a wind turbine rotor blade includes a male structural member extending longitudinally through female structural members configured with a plurality of rotor blade segments. The female structural member includes first bore holes on opposing sides thereof that are aligned in a chord-wise direction. The male structural member includes second bore holes on opposing sides thereof that are aligned with the first bore holes. At least one chord-wise extending gap is defined between an outer side surface of the male structural member and an inner side surface of the female structural member. A chord-wise extending pin extends through the first and second bore holes to join the male and female structural members. At least one flanged bushing is arranged in the first and second bore holes such that a flange of the bushing extends within the chord-wise extending gap.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: February 25, 2020
    Assignee: General Electric Company
    Inventors: Scott Jacob Huth, Donald Joseph Kasperski, Aaron A. Yarbrough, Eric Michael Shain, Jacob Lee Bunch
  • Patent number: 10533534
    Abstract: The present disclosure is directed to a method for bonding composite blade components of a rotor blade of a wind turbine. The method includes providing a first blade component being constructed of a first composite material. The method also includes providing a second blade component being constructed of a second composite material. Further, the method includes arranging the first and second blade components together at an interface. Another step includes placing one or more layers of a wetted composite material between the first and second blade components at the interface. The method also includes allowing the one or more layers of the wetted composite material at the interface to cure.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: January 14, 2020
    Assignee: General Electric Company
    Inventors: Aaron A. Yarbrough, Christopher Daniel Caruso
  • Patent number: 10520804
    Abstract: A portable radiographic imaging apparatus includes a sensor and a case that houses sensor panel. Radiation detector elements are arrayed two-dimensionally in the sensor panel. The case comprises a corner where two side walls are adjacent. The side walls are made of a continuous fiber reinforced resin that comprises one or more fiber layers oriented in a predetermined direction. The fiber layers are oriented in a direction from one to the other of the adjacent side walls in the corner. A breakpoint where the fiber layers are discontinuous over an entire thickness in a wall thickness direction is not present in an area of at least one of the corners.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: December 31, 2019
    Assignee: Konica Minolta, Inc.
    Inventor: Kohei Miyoshi
  • Patent number: 10519928
    Abstract: A rotor blade for a wind turbine includes an upper shell member having a spar cap configured on an internal face thereof, a lower shell member having a spar cap configured on an internal face thereof, and a shear web assembly extending between the spar caps along a longitudinal length of the rotor blade. The shear web assembly includes, at least, a first shear web and a second shear web. The first shear web starts at a blade root of the rotor blade and extends to an intermediate span location. The second shear web overlaps the first shear web at the intermediate span location and extends towards a blade tip of the rotor blade so as to provide increase torsional rigidity to the rotor blade.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: December 31, 2019
    Assignee: General Electric Company
    Inventor: Aaron A. Yarbrough
  • Patent number: 10450870
    Abstract: An airfoil for an aircraft engine is provided. The airfoil may include a plurality of composite plies extending in a chordwise direction from a leading edge to a trailing edge and in a spanwise direction between an airfoil tip and an airfoil base. The airfoil may include at least one discontinuous ply having a first ply segment, a second ply segment, and a butt joint disposed between the first ply segment and the second ply segment. The butt joint may be disposed along a first fragment profile to frangibly attach the first and second ply segments.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: October 22, 2019
    Assignee: General Electric Company
    Inventors: Phani Nandula, Suresh Subramanian, Nicholas Joseph Kray, Gregory Carl Gemeinhardt
  • Patent number: 10436033
    Abstract: A fan system includes a motor, a rotatable hub, and a plurality of fan blades. Each of the fan blades includes a substantially rigid spine member, a resilient leading edge member, and a resilient trailing edge member. The leading edge member and trailing edge members are removably coupled with the spine member, such that different leading edge members and different trailing edge members may be chosen to customize the leading and trailing edges of the fan blades. Each fan blade may have more than one type of leading edge member or more than one type of trailing edge member. The leading edge member and trailing edge member may each be coupled with the spine member by urging the leading edge member and trailing edge member in a direction that is substantially perpendicular to the longitudinal axis defined by the spine member.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: October 8, 2019
    Assignee: Delta T, LLC
    Inventors: J. Carey Smith, Richard W. Fizer, Richard M. Aynsley, Richard A. Oleson
  • Patent number: 10428790
    Abstract: A method of making an elongate wind turbine blade is described. The wind turbine blade extends longitudinally between a root end and a tip end in a spanwise direction, and the method comprises: (a) providing an elongate mould tool (20) extending longitudinally in a spanwise direction; (b) arranging an elongate spar structure (40) in the mould tool, the spar structure (40) N extending longitudinally in the spanwise direction; (c) arranging core material (24) adjacent to the spar structure (40); (d) providing resin-permeable material (114) between the spar structure (40) and the core material (24); and (e) administering resin into the mould during a resin infusion process. The resin-permeable material (114) restricts the flow of resin between the spar structure (40) and the core material (24) in the spanwise direction and thereby substantially prevents lock-offs from forming during the infusion process.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: October 1, 2019
    Assignee: Vestas Wind Systems A/S
    Inventor: Jonathan Smith
  • Patent number: 10422316
    Abstract: The present disclosure is directed to a rotor blade component for a wind turbine. The rotor blade component includes a plurality of pre-cured members arranged in one or more layers. Each of the pre-cured members is constructed of a plurality of fiber materials cured together via a resin material having a first stiffness and at least additional material having a second stiffness. Further, the second stiffness is lower than the first stiffness. As such, the additional low-stiffness material is cured within the resin material so as to increase flexibility of the pre-cured members.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: September 24, 2019
    Assignee: General Electric Company
    Inventors: Aaron A. Yarbrough, Christopher Daniel Caruso
  • Patent number: 10393090
    Abstract: Provided is a blade for a wind power generator comprising: a main spar including: an upper main spar flange and a lower main spar flange whose both ends are protruded towards the front and rear side respectively; a front main spar web and a rear main spar web which are connecting the upper main spar flange and the lower main spar flange; a first body, located in the front side of the main spar, including an inverted D-type rib; and a second body, located in the rear side of the main spar, including a curved rib. The inverted D-type rib includes: a vertical frame; and a block frame extendedly formed from the upper side and the lower side of the vertical frame respectively and convexly formed towards the front side.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: August 27, 2019
    Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION OF KOREA AEROSPACE UNIVERSITY
    Inventors: Jae-Sung Bae, Soo-Yong Lee, Dong-Guk Choi
  • Patent number: 10329925
    Abstract: A turbine engine component (100) comprises a fiber structure (125, 126) forming at least a portion of an airfoil (102). A matrix (128) embeds the fiber structure. A carbon nanotube filler (130) is in the matrix.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 25, 2019
    Assignee: United Technologies Corporation
    Inventors: Sreenivasa R. Voleti, Christopher M. Quinn
  • Patent number: 10273937
    Abstract: A composite member comprises first and second elongate composite elements. Each has a wedge shaped end with a complimentary tapered end surface. At least one of the components is formed of a stack of fiber layers impregnated in resin, with the tapered end surface being formed by each fiber layer extending longitudinally progressively further than the adjacent layer towards the thin end of the wedge at which the fiber layers have the greatest longitudinal extent. The components are joined at their tapered ends by an adhesive, and the properties of the cured composite material of the at least one component and/or the properties of the adhesive are different in the vicinity of the thin end of the wedge as compared to the rest of the tapered surface in order to reduce the stress concentrations in this region.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: April 30, 2019
    Assignee: BLADE DYNAMICS LIMITED
    Inventors: Paul Trevor Hayden, Harald Behmer
  • Patent number: 10150554
    Abstract: An aircraft including a primary-structure connection element for attaching the aircraft skin to the primary structure of the aircraft is provided. The primary-structure connection element is designed as a shearweb, a clip and/or as a frame stabilization element or as a rib stabilization element and is manufactured from a fiber-reinforced thermoplastic material with the use of injection molding. Likewise, an injection molding method for the manufacture of such a primary-structure connection element is provided, in which method the fiber-reinforced thermoplastic material is injected in its melted state into an injection molding device. The manufactured shearweb etc. is removed from the injection molding device. In this method, in particular, chopped carbon fibers and/or glass fibers in combination with polyphenylene sulfide (PPS) and/or polyetherether ketone (PEEK) are used, for example also in pellet form.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: December 11, 2018
    Assignee: Airbus Operations GmbH
    Inventor: Matthijs Plokker
  • Patent number: 10119520
    Abstract: A rotor blade for a wind turbine, having a longitudinal rotor blade base body extending in a longitudinal axis, with the rotor blade base body defining a leading edge and a trailing edge of the rotor blade is provided, wherein the rotor blade base body has a number of panel elements, wherein at least one panel element includes at least one stiffening structure member embedded within the at least one panel element.
    Type: Grant
    Filed: February 14, 2015
    Date of Patent: November 6, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Ashish Pawar
  • Patent number: 10100804
    Abstract: A wind turbine rotor blade (14) comprising a root portion (15) having a substantially cylindrical shape and a longitudinal axis (22), the root portion having a mounting face (25); a plurality of bores (26) in a wall of the root portion and extending from the mounting face into the root portion, the bores being configured to receive respective connecting means for connecting the wind turbine rotor blade to a wind turbine hub; wherein the plurality of bores are inclined at an angle relative to the longitudinal axis of the root portion to define a cone angle.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 16, 2018
    Assignee: Vestas Wind Systems A/S
    Inventors: Arne Haahr, Zhen-Zhe Chen, Manikandan Rajagopal
  • Patent number: 10077757
    Abstract: A rotor blade of a wind power installation for fixing to a rotor hub and having a rotor blade longitudinal axis, including a rotor blade inner part towards the rotor hub, and a rotor blade outer part away from the rotor hub, wherein the rotor blade inner part and the rotor blade outer part are connected together by means of at least one connecting device and the connecting device includes at least one anchoring element anchored in the rotor blade outer part, at least one counterpart element anchored in the rotor blade inner part, and at least one connecting bolt which extends through the counterpart element and is fixed in the anchoring element.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: September 18, 2018
    Assignee: Wobben Properties GmbH
    Inventors: Johannes Kannenberg, Alexander Hoffmann
  • Patent number: 10066600
    Abstract: A wind turbine rotor blade is bonded together at the leading and trailing edges, and including a shear web or webs (the main vertical stiffening member that runs the span of the rotor blade) as an integral part, sharing the inner and outer skins of one or both sides of the blade. The integrated shear web(s) is made into the skin shell, and is an uninterrupted, continuous extension of the shell laminate that is joined to the shell component/components without requiring a secondary bond of any sort. The laminates in the shell and the shear web(s) may differ or be the same.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: September 4, 2018
    Assignee: TPI COMPOSITES, INC.
    Inventor: Zachary Brekenfeld
  • Patent number: 10041472
    Abstract: The present invention relates to a blade for a wind turbine comprising at least a longitudinal component comprising at least two longitudinal stretches with fibers at different orientations depending on the location of these stretches along the blade, where the orientation of the fibers in the stretches of the blade is adapted to the prevailing load states in each of the stretches.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 7, 2018
    Assignee: Acciona Windpower, S.A.
    Inventors: Carlos Donazar Moriones, Alvaro Gorostidi Martinez De Lecea, Sung Kyu Ha, Teresa Arlaban Gabeiras, Jose Miguel Garcia Sayes, Miguel Nunez Polo
  • Patent number: 9981736
    Abstract: A tiltrotor aircraft includes a fuselage, a wing member extending from the fuselage, an engine disposed relative to the wing member, a rotor hub assembly mechanically coupled to the engine and a plurality of proprotor blade assemblies rotatably mounted to the rotor hub assembly and operable for beamwise folding relative thereto. The proprotor blade assemblies each including a spar and a sheath extending spanwise along a leading edge of the spar. The spar has a root section, a main section and a tip section. The spar has a generally oval cross section at radial stations along the main section of the spar with the root section of the spar forming an integral tang assembly operable for coupling the spar to the rotor hub assembly.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: May 29, 2018
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Jared Mark Paulson, Paul K. Oldroyd, Christopher Foskey
  • Patent number: 9970412
    Abstract: A wind turbine blade comprising a fairing with a rigid structural component (12) which forms the majority of the aerodynamic profile and a non-actively controllable elastically deformable trailing edge component (14) mounted on the structural component to complete the aerodynamic profile. The trailing edge component (14) is formed from a material having an elastic modulus in the range of 0.5 to 2.5 GPa such it will elastically buckle when loading on the trailing edge component exceeds a predetermined threshold. The structural component (12) comprises a unidirectional reinforcing layer adjacent to the trailing edge component with at least one layer of unidirectional fibers (26) extending in a substantially spanwise direction.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: May 15, 2018
    Assignee: BLADE DYNAMICS LIMITED
    Inventors: Paul Hayden, Joaquin Gutierrez
  • Patent number: 9945356
    Abstract: A wing or blade in at least two sections facing each other. Each section has a longitudinal bearing structure provided with at least one sole of which the link between the sections includes at least one first link plate linking the end of the soles of the sections facing each other. A method of producing such wing or blade.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: April 17, 2018
    Assignee: AIRBUS DEFENCE AND SPACE SAS
    Inventors: Antoine Humblot, Francois Naud
  • Patent number: 9932109
    Abstract: A method of fabricating a blade spar that includes transversely at least one arrangement. A pressure-side mold and a suction-side mold are defined for each arrangement that is to be fabricated. Each mold includes at least one removable slide and a base. Each slide is then removed from a mold and the tape segments of a hank are laid by a fiber-placement method on each mold. Each mold is closed by putting the slides into place on the mold. During a finalizing step, the molds are juxtaposed and the spar is heated.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: April 3, 2018
    Assignee: AIRBUS HELICOPTERS
    Inventors: Andre Amari, Jacques Gaffiero
  • Patent number: 9889619
    Abstract: A method for manufacturing a rotor blade, including: a) arranging a first layup of fiber material inside a mold, the first layup corresponding to an airfoil of the rotor blade, b) arranging a second layup of fiber material on a core member before and/or after arranging the core member in the mold, the second layup including the core member corresponding to a web of the rotor blade, the core member comprising a recess configured to ensure a smooth transfer of loads into and out of the web, and c) curing a resin impregnating the fiber material of the first and second layup to form the rotor blade.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: February 13, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Klaus Kirkeby, Anders Overgaard
  • Patent number: 9849656
    Abstract: A method of repairing a core stiffened structure, including removing a damaged portion of the core stiffened structure; bonding a shelf onto a first core member; bonding a second core member to a shelf; and securing a skin patch over the second core member.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: December 26, 2017
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Robert Wardlaw, Brian S. Modrzejewski, Byron Mueller, Vance N. Cribb, III
  • Patent number: 9816482
    Abstract: A spar cap for a rotor blade of a wind turbine is disclosed. The rotor blade includes a blade root and a blade tip, leading and trailing edges, pressure and suction sides, and at least one spar cap configured on an internal surface of either or both the pressure or suction sides. The spar cap includes one or more layers of a first material and a second conductive material contacting at least one of the layers of the first material. Further, the conductive material is different than the first material. Thus, the conductive material is configured with the first material so as to create an equipotential spar cap.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 14, 2017
    Assignee: General Electric Company
    Inventors: Christopher Daniel Caruso, Aaron A. Yarbrough, Richard Allen Hardison
  • Patent number: 9739259
    Abstract: A hybrid turbine blade having a box beam assembly structure and method of designing such a hybrid turbine blade are disclosed. The box beam assembly provides the primary structure for supporting loads on the blade, and comprises oppositely positioned spar caps joined by oppositely positioned shear webs. For a portion of the blade, the box beam assembly further comprises a root buildup. In one embodiment, the shear webs comprise foam core sandwiched between two biaxial fiber-reinforced plastic laminates (FRP), the spar caps comprise uniaxial FRP laminates, and the root buildup comprises triaxial FRP laminates. The blades are designed using a novel inside-out method, wherein the box beam is first designed to support expected loads, and an aerodynamic surface is then designed to be supported by the box beam. The blade may be constructed in segments that are joined with connectors that engage the box beam structure.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: August 22, 2017
    Assignee: The Regents of the University of California
    Inventors: Perry M. Roth-Johnson, Richard E. Wirz
  • Patent number: 9709030
    Abstract: Methods of manufacturing rotor blade components for a wind turbine and rotor blade components produced in accordance with such methods are disclosed. In one embodiment, the method generally includes providing a mold of the rotor blade component; coating at least a portion of an interior surface of the mold with an elastomeric material; inserting impletion material within the mold so as to at least partially reduce an open internal volume within the mold; inserting a foam material within the mold; and, removing the rotor blade component from the mold, wherein the elastomeric material forms a cover skin around at least a portion of the rotor blade component. In an alternative embodiment, the method includes providing at least one support member defining a profile for the rotor blade component on a mold surface; coating at least a portion of the support member with an elastomeric material; and, allowing the elastomeric material to cure on the mold surface so as to form the rotor blade component.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: July 18, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: James Robert Tobin, Thomas Joseph Fischetti, William Max Gobeli
  • Patent number: 9701407
    Abstract: Disclosed is a drone having at least one rotor. The at least one rotor comprises a mast and at least two blades having a proximal end and a distal end. The at least two blades are arranged in connection with the mast by their proximal ends. The at least one of the blades comprises an electrically conductive element extending a distance D between its distal end and its proximal end. The electrically conductive element is electrically coupled with means for stopping the blades, thus forming an electrical circuit. The means for stopping the blades is arranged to be actioned when at least one electrical property of the electrical circuit change.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 11, 2017
    Assignee: Sharper Shape Oy
    Inventors: Atte Korhonen, Tero Heinonen
  • Patent number: 9677538
    Abstract: A wind turbine rotor blade assembly and associated method include a rotor blade having a pressure side, a suction side, a leading edge, and a trailing edge extending in a generally span-wise direction between a tip and a root. An edge extension panel is attached along either of the leading edge or trailing edge (or along both edges) in a generally span-wise direction from adjacent the root towards the tip. The edge extension panels include a cured and hardened viscous material continuous core formed onto the leading or trailing edge with a contoured generally aerodynamic outer surface.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: June 13, 2017
    Assignee: General Electric Company
    Inventors: Aaron John Mashue, Bruce Clark Busbey, Christian A. Carroll
  • Patent number: 9638165
    Abstract: It is described a blade for a wind turbine for converting wind energy into electric energy, including: a blade structure longitudinally extending along a blade axis (X1) and including a blade tip, an opposite blade root, a longitudinal leading edge portion and a longitudinal trailing edge portion which are extended between the blade root and the blade tip; and an outer aerodynamic shell defining an airfoil including an airfoil leading edge, an airfoil trailing edge and an airfoil suction side and an airfoil pressure side between the airfoil leading and trailing edges.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: May 2, 2017
    Assignee: ENEL GREEN POWER, S.P.A.
    Inventors: Luigi La Pegna, Renzo Piano
  • Patent number: 9611833
    Abstract: A blade (10) for a rotor of a wind turbine having a profiled contour divided into: a root region (30), an airfoil region (34), and a transition region (32) between the root region (30) and the airfoil region (34). A shoulder (40) is located at the boundary between the transition region (32) and the airfoil region (34). The blade's profiled contour comprises a local relative thickness defined as the local ratio between a maximum profile thickness (t) and the chord length (c). The ratio between the shoulder width (W) and the blade length (L) being less than or equal to 0.075, and the relative thickness (t/c) in a blade length interval of 0-0.8 L is at least 22%.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 4, 2017
    Assignee: LM GLASFIBER A/S
    Inventors: Jesper Madsen, Christian Frank Andersen, Peter Fuglsang
  • Patent number: 9550332
    Abstract: Tapered layers of pre-cured composite material are integrated into a tapered, highly stressed laminate structure in order to provide improved compressive strength. The pre-cured composite material can advantageously be cured under tension as pultruded material, to further augment compressive strength. The thickness of composite layers can be tapered on their termination edges by mechanically abrading, chemical abrading, or other methods. Especially preferred embodiments include aircraft structural components such as wings, wing spars, wing skins, fuselage skins, rotor blades, propellers, and propeller blades. Preferred laminates can be constructed to have at least 6, 10, 30, 50, or 100 layers of material, and can have a maximum thickness of at least 0.15, 0.25, 0.5, 1.0, or 5.0 inches.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: January 24, 2017
    Inventor: Abe Karem
  • Patent number: RE48538
    Abstract: A ceiling fan includes blade (11) that is integrally formed of root (12), vane (13), and step (14) for maintaining vane (13) in a state inclined from horizontal. Blade (11) includes bend (16) on upstream side (11c), first reinforcement (17) on upstream downstream side (11c) (11b), and a plurality of second reinforcements (18) between bend (16) and first reinforcement (17). First reinforcement length (17a) is longer than second reinforcement length (18a). Further, the ceiling fan includes blade drop prevention portion (37) for locking blade (11) to support (10).
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 27, 2021
    Assignee: Panasonic Intellectual Property Mangement Co., Ltd.
    Inventors: Hiroyuki Kuramochi, Hironari Ogata, Daiki Sakito