Wire, Fiber, Strand Or Fabric Patents (Class 416/230)
  • Patent number: 10428791
    Abstract: A rotor blade of a wind turbine. The rotor blade comprises at least one rotor-blade inner portion, having a region connecting to the rotor-blade hub, and at least one rotor-blade outer portion, having a rotor-blade tip, the rotor-blade inner portion and the rotor-blade outer portion each being made substantially of a fibre-reinforced plastic, and the rotor-blade inner portion and the rotor-blade outer portion being connected to each other by a connecting device. The connecting device in this case comprises an inner insert that is at least partially wrapped in the fibre-reinforced plastic of the rotor-blade inner portion, an outer insert that is at least partially incorporated in the fibre-reinforced plastic of the rotor-blade outer portion, the inner insert and the outer insert being connected to each other via a connecting element.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 1, 2019
    Assignee: Wobben Properties GmbH
    Inventor: Falk Spieth
  • Patent number: 10400612
    Abstract: An airfoil and a method of manufacturing an airfoil may be provided, where the airfoil comprises a core and a shell. The core comprises core ceramic fibers extending along a span of the airfoil. The shell surrounds the core and includes shell ceramic fibers. Substantially all of the core ceramic fibers are arranged in a radial direction. The airfoil may also be a ceramic matrix composite formed by infiltrating the core and the shell with a matrix material.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: September 3, 2019
    Assignee: Rolls-Royce Corporation
    Inventors: Ted Freeman, Todd Engel, Adam Chamberlain, Aaron Sippel, Sean Landwehr
  • Patent number: 10385869
    Abstract: A composite component comprising a plurality of plies. A first set of pins extend in a direction transverse to the plies and a second set of pins extend in a direction transverse to the plies. The pins of the first set are made of a different material to the pins of the second set.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 20, 2019
    Assignee: ROLLS-ROYCE plc
    Inventors: Beene M'Membe, Mehdi Yasaee, Stephen Hallett, Ivana Partridge
  • Patent number: 10358929
    Abstract: An airfoil includes a core with a first Young's Modulus; and an outer section at least partially surrounding the core with a second Young's Modulus, wherein the first Young's Modulus is higher than the second Young's Modulus.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: July 23, 2019
    Assignee: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Greg C. Ojard, Kevin L. Rugg
  • Patent number: 10352296
    Abstract: Provided is a rotor blade that may include a first layer having first plurality of fibers oriented at first angle of about 20 to 30 degrees relative to a long axis of the rotor blade, a second plurality of fibers oriented at a second angle of about 60 to 75 degrees relative to the first plurality of fibers, and a third plurality of fibers oriented at a third angle of about ?60 to about ?75 degrees relative to the second plurality of fibers.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: July 16, 2019
    Assignee: WEI7 LLC
    Inventor: Kyle K. Wetzel
  • Patent number: 10330075
    Abstract: The invention provides a wind turbine blade having a Radar Absorbing Material (RAM) and a lightning protection system arranged for guaranteeing the performance of the lightning protection system and the integrity of the RAM. The lightning protection system has lightning receptors located at a tip region and one or two down-conductors disposed inside of the wind turbine blade for driving lightning current to ground. The RAM covers the entire wind turbine blade except the tip region and has at least a functional layer and a reflector layer connected to the one or two down conductors by means of auxiliary cables.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: June 25, 2019
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY INNOVATION & TECHNOLOGY, S.L
    Inventors: Victor March Nomen, Juan Madoz Zabalegui
  • Patent number: 10309369
    Abstract: A wind turbine blade for a wind turbine is a shell structure of a fibre-reinforced composite and comprises a root region and an airfoil region. The root region has ring-shaped cross section and comprises a plurality of elongated bushings 7 with an inner thread 22 and embedded interspaced in the fibre-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads. Each fastening member 7 is provided with a notch 60? in the periphery 11 thereof. A rod-shaped locking element 61 passes through the notch 60? in engagement therewith. The locking element 61 is fixedly and tightly fitting arranged in a through-going circular bore 65 extending through the wall of the root region.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: June 4, 2019
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Martin Dahl, Bjarne Krab Mortensen, Benjamin Hornblow
  • Patent number: 10280769
    Abstract: An airfoil is disclosed. The airfoil may comprise a body portion having a leading edge, a trailing edge, a pressure side, and a suction side. The airfoil may further comprise a compliant attachment bonded to the body portion and the compliant attachment may be configured to connect to a support structure. The compliant attachment may have a coefficient of thermal expansion intermediate between a coefficient of the thermal expansion of the body portion of the airfoil and a coefficient of thermal expansion of the support structure.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: May 7, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Grant O. Cook, Benjamin T. Fisk
  • Patent number: 10240466
    Abstract: A fiber preform for a hollow turbine engine vane, the preform including a main fiber structure obtained by three-dimensional weaving and including at least one main part, wherein the main part extends from a first link strip, includes a first main longitudinal portion forming a pressure side wall of an airfoil, an U-turn bend portion forming a leading edge or a trailing edge of the airfoil, a second main longitudinal portion facing the first main longitudinal portion and forming a suction side wall of the airfoil, and terminating at a second link strip. The first and second link strips are secured to each other and form a link portion of the main fiber structure. The main longitudinal portions are spaced apart so as to form a gap between the main longitudinal portions forming a hollow in the airfoil.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: March 26, 2019
    Assignees: SAFRAN AIRCRAFT ENGINES, SAFRAN
    Inventors: Michael Podgorski, Bruno Jacques Gerard Dambrine, Son Le Hong, Dominique Marie Christian Coupe, Ludovic Edmond Camille Molliex, Jonathan Goering
  • Patent number: 10221832
    Abstract: Provided is a rotor blade that may include a first layer having first plurality of fibers oriented at first angle of about 20 to 30 degrees relative to a long axis of the rotor blade, a second plurality of fibers oriented at a second angle of about 60 to 75 degrees relative to the first plurality of fibers, and a third plurality of fibers oriented at a third angle of about ?60 to about ?75 degrees relative to the second plurality of fibers.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: March 5, 2019
    Assignee: WEI7 LLC
    Inventor: Kyle K. Wetzel
  • Patent number: 10184510
    Abstract: A piston engine crankshaft made from carbon composite material molded in two separate moldings is disclosed. According to a preferred embodiment, the first mold is optimized to for the top dead center piston ignition load. The second molding takes the dynamic piston and rod load and contains the counterweight. Accordingly, carbon fiber filaments are aligned in preferred directions to ideally absorb loads at different areas of the crankshaft.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: January 22, 2019
    Inventor: James Walter Linck
  • Patent number: 10179439
    Abstract: A method of manufacturing a portion of a wind turbine blade is described. The method comprising the steps of: laying up a primary fiber material in a mold; infusing said primary fiber material with a primary resin; substantially curing said primary resin in said primary fiber material to form a cured blade element; laying up a secondary fiber material on top of at least a portion of said cured blade element; infusing said secondary fiber material with a secondary resin different to said primary resin, wherein said secondary resin has a higher strength level than said primary resin; and curing said secondary resin in said secondary fiber material to form an integrated reinforced section on said cured blade element.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 15, 2019
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Rasmus C Ostergaard, Lars Nielsen, Klavs Jespersen
  • Patent number: 10145244
    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: July 6, 2015
    Date of Patent: December 4, 2018
    Assignee: BELL HELICOPTER TEXTRON INC.
    Inventors: Paul K. Oldroyd, Drew Sutton, Andrew Maresh, Christopher Foskey
  • Patent number: 10094224
    Abstract: A rotor blade main body includes multiple first composite sheet groups and multiple second composite sheet groups which are provided in a blade thickness direction. Each first composite sheet group includes multiple composite sheets which are stacked one on another from a blade thickness center side toward a dorsal surface. Each second composite sheet group includes multiple composite sheets which are stacked one on another from the blade thickness center side toward a ventral surface. A composite direction of orientation directions of fibers in the multiple composite sheets in each of the sheet groups inclines by 20 degrees to 45 degrees from a span direction.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: October 9, 2018
    Assignee: IHI Corporation
    Inventor: Takeshi Murooka
  • Patent number: 10072632
    Abstract: A spar cap for a rotor blade of a wind turbine may generally include an assembly of pre-cured laminate plates stacked on one top of the other, with the assembly including an outermost pre-cured plate, an innermost pre-cured plate positioned opposite the outermost pre-cured plate and a plurality of intermediate pre-cured plates stacked directly between the outermost and innermost pre-cured plates. The outermost pre-cured plate may be configured to be positioned adjacent to an inner surface of a body shell of the rotor blade. In addition, the outermost pre-cured plate may define a plate thickness that differs from a plate thickness defined by the innermost pre-cured plate by at least 50%.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: September 11, 2018
    Assignee: General Electric Company
    Inventors: Aaron A. Yarbrough, Christopher Daniel Caruso
  • Patent number: 10060411
    Abstract: A root assembly for a rotor blade of a wind turbine includes a blade root section having an inner sidewall surface and an outer sidewall surface separated by a radial gap, a plurality of root inserts spaced circumferentially within the radial gap, and a plurality of spacers configured between one or more of the root inserts. Further, each of the root inserts includes at least one bore hole surrounded by a pre-cured or pre-consolidated composite material. In addition, the pultruded spacers are constructed of a pre-cured or pre-consolidated composite material.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: August 28, 2018
    Assignee: General Electric Company
    Inventors: Christopher Daniel Caruso, Aaron A. Yarbrough, Daniel Alan Hynum, James Robert Tobin
  • Patent number: 10024333
    Abstract: The present disclosure relates to composite airfoils bonded to a metallic root. A composite body (510) may be formed with a metallic co-molded detail (520). The co-molded detail (520) may be transient liquid phase (TLP) bonded to an attachment feature (530). The attachment feature (530) may allow the composite body (510) to be attached to a rotor (200). The airfoil (500) may also have a metallic edge (550) which is TLP bonded to the composite body (510) via a co-molded edge (540).
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: July 17, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: James T. Roach, Grant O. Cook, III
  • Patent number: 9995271
    Abstract: A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a plurality of elongated bushings 7 with an inner thread 22 and which are embedded interspaced in the fiber-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads 22. The bushings 7 are formed conically tapering from a second end towards a first end thereof, the first end of the bushing 7 being arranged at the end face of the root region.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: June 12, 2018
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Martin Dahl, Bjarne Krab Mortensen, Benjamin Hornblow
  • Patent number: 9976537
    Abstract: A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a cylindrical insert 7 embedded in the fiber-reinforced polymer so as to substantially follow the circumference of the root region. The cylindrical insert is provided with a number of mutually spaced threaded bores 12, 15 in a first end 9 thereof being accessible from the outside.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: May 22, 2018
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Martin Dahl, Bjarne Krab Mortensen, Benjamin Hornblow
  • Patent number: 9976429
    Abstract: A gas turbine engine composite disk includes dovetail slots between disk posts extending radially inwardly from a periphery, a hub ring of composite plies circumscribed about a centerline axis, and radial plies extending radially away from hub ring into disk posts. A segmented intermediate ring concentric with and located radially outwardly of hub ring includes intermediate ring segments having nested plies with annular bases circumscribed about centerline axis and substantially radially extending clockwise and counter-clockwise radial ply arms. An outer segmented ring may be concentric with and located radially outwardly of intermediate ring, include annular outer ring segments with circumferentially stacked composite plies disposed within intermediate ring segments between clockwise and counter-clockwise radial ply arms and radially outwardly of annular bases. An outer skin of outermost composite covering plies may extend circumferentially around composite disk.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: May 22, 2018
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Baskaran Bhuvaraghan, Nitesh Jain
  • Patent number: 9970304
    Abstract: The present disclosure is directed to a root assembly for a rotor blade of a wind turbine and methods of manufacturing same. The root assembly includes a blade root section having an inner sidewall surface and an outer sidewall surface separated by a radial gap, a plurality of root inserts spaced circumferentially within the radial gap, and a plurality of spacers configured between one or more of the root inserts. Further, each of the root inserts includes at least one bushing surrounded by a pre-cured or pre-consolidated composite material. In addition, the spacers are constructed of a pre-cured or pre-consolidated composite material.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: May 15, 2018
    Assignee: General Electric Company
    Inventors: Christopher Daniel Caruso, Aaron A. Yarbrough, Daniel Alan Hynum, James Robert Tobin
  • Patent number: 9964096
    Abstract: Provided is a rotor blade that may include a first layer having a first plurality of non-woven fibers oriented at first angle of about 10 to 30 degrees relative to a long axis of the rotor blade, a second plurality of non-woven fibers oriented at a second angle of about 60 to 75 degrees relative to the first plurality of fibers, and a third plurality of non-woven fibers oriented at a third angle of about ?60 to about ?75 degrees relative to the second plurality of fibers.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 8, 2018
    Assignee: WEI7 LLC
    Inventor: Kyle K Wetzel
  • Patent number: 9945234
    Abstract: A composite component having a body formed from a plurality of fiber reinforced non-metallic layers. The body includes a delamination region configured so as to permit delamination; and a deflector region configured so as to resist delamination. In the event of delamination, delamination is deflected to and continues to propagate in the delamination region.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: April 17, 2018
    Assignee: ROLLS-ROYCE plc
    Inventors: Matthew Paul Jevons, Darren Ivor James, Gordon Kalwak
  • Patent number: 9938848
    Abstract: A rotor assembly having a wear member secured to an inner surface of the outer wall of the flow path. The wear member is made of material abradable by the blades. The wear member is located upstream of the blades. A downstream end of the wear member is abradably shaped by the blades upon rotation. An inner surface of the wear member is directed radially inwardly along a direction of flow in the flow path for deflecting a boundary layer of the flow into the annular blade path. A gas turbine engine and a method reducing tip vortices in a rotor assembly are also discussed.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: April 10, 2018
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventor: Enzo Macchia
  • Patent number: 9926791
    Abstract: A ceramic matrix composite article and a process of fabricating a ceramic matrix composite are disclosed. The ceramic matrix composite article includes a matrix distribution pattern formed by a manifold and ceramic matrix composite plies laid up on the matrix distribution pattern, includes the manifold, or a combination thereof. The manifold includes one or more matrix distribution channels operably connected to a delivery interface, the delivery interface configured for providing matrix material to one or more of the ceramic matrix composite plies. The process includes providing the manifold, forming the matrix distribution pattern by transporting the matrix material through the manifold, and contacting the ceramic matrix composite plies with the matrix material.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: March 27, 2018
    Assignee: General Electric Company
    Inventors: Ronald Ralph Cairo, Paul Stephen Dimascio, Jason Robert Parolini
  • Patent number: 9850764
    Abstract: There is provided a blade tip for a rotary blade. The blade tip is formed of a metal foam and comprises at least one vortex generator. The vortex generator may comprise at least one passageway and/or cavity in the blade tip. In use, a vortex is created between the blade tip and a fan casing adjacent the blade tip.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: December 26, 2017
    Assignee: ROLLS-ROYCE plc
    Inventors: Ian Colin Deuchar Care, Stephane Baralon
  • Patent number: 9822759
    Abstract: The blade root or the internal structure of the blade comprise joining elements for joining to the hub disposed between lamination sheets, consisting of a plurality of inserts, designed to receive a fixing element related to the hub, which facilitate the coupling of the blade to the wind turbine hub. It incorporates fibre bands of compact, elongated and enveloping configuration which grip the inserts configuring assemblies embedded between the lamination sheets, wherein the fibre bands guarantee the progressive progression of stresses between blade and hub.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: November 21, 2017
    Assignee: INGENIERIA PROSIX, S. L.
    Inventor: Álvaro Pipo Benito
  • Patent number: 9797257
    Abstract: A composite article including composite component mounted on a spar including a shank extending heightwise from below component base up into composite component. Tab at an upper end of shank substantially or fully embedded in the composite component and at least one ply surface pattern of the composite component contacting and generally conforming to at least one spar surface pattern on the tab. Spar surface pattern may include spaced apart spar surface protrusions with spar surface spaces therebetween and spar surface protrusions extending outwardly from spar and disposed between tows in ply surface pattern. Tows may be layed up in spar surface spaces. Spar surface pattern may include continuous or segmented spaced spar surface protrusions and spar surface spaces therebetween with tows in ply surface pattern disposed in spar surface spaces. The composite article may be a composite blade or vane including a composite airfoil.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 24, 2017
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Scott Roger Finn, Peggy Lynn Baehmann, Joel Primmer White
  • Patent number: 9784112
    Abstract: The invention relates to a turbine engine vane comprising a main body made of composite material, a leading edge, a trailing edge, and at least one metal structural reinforcement, the structural reinforcement comprising a junction surface portion connected to the main body, the structural reinforcement extending between the junction surface portion and one of the leading or trailing edges, the vane being characterized in that the profile of the junction surface portion of the structural reinforcement has a camber less than 30%.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: October 10, 2017
    Assignees: SNECMA, SAFRAN
    Inventors: Maxime Briend, Sebastien Pautard
  • Patent number: 9777579
    Abstract: A composite article including composite component extending heightwise from a component base to a component tip and lengthwise between spaced apart component first and second edges. Component plies having widthwise spaced apart ply first and second sides and ply edges therebetween. Component mounted on a spar which includes a shank extending heightwise into the composite component, tab at upper end of shank and substantially or fully embedded in the composite component, and tab tip. Ply edges of at least a first portion of the plies directly or indirectly contacting or pressing against the tab. Ply edges of at least a second portion of the plies may directly or indirectly contact or press against the tab tip. Ply edges of first portion may press against one or more indented or recessed surfaces in the tab. The composite article may be a composite blade or vane including a composite airfoil.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 3, 2017
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Scott Roger Finn, Peggy Lynn Baehmann, Dong-Jin Shim, Gregory Carl Gemeinhardt
  • Patent number: 9751277
    Abstract: The invention relates to a method of cutting off laminate layers for use in a fiber-reinforced laminate object comprising a number of combined laminate layers, wherein, along a section of the at least one rim of the laminate layer, a tapering cut is performed through the thickness of the laminate layer, whereby the thickness of the laminate layer is reduced. Since not only the number of laminate layers, but also the thickness of the individual laminate layers are reduced, a laminate layer is accomplished that can be used in a laminate object, by which both the issues of areas rich in resin, air pockets and the risk of delamination are reduced. The invention also relates to a laminate layer for use in a fiber-reinforced laminate object comprising a number of combined laminate layers and a fiber-reinforced laminate object in the form of the blade of a wind turbine, wherein the blade of the wind turbine comprises a number of combined laminate layers.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: September 5, 2017
    Assignee: LM GLASFIBER A/S
    Inventors: Torben Krogsdal Jacobsen, Morten Dahl
  • Patent number: 9599094
    Abstract: A method of manufacturing an aerodynamic shell part for a wind turbine blade is described. The aerodynamic she part comprises a recess for arrangement and connection of a spar cap within said recess. The method comprising the steps of: a) providing a first mold part having a first forming surface that defines a part of an exterior of the aerodynamic shell part, b) laying up fiber-reinforcement material and optionally also sandwich core material in the first mold on the first forming surface, c) arranging one or more inserts having an exterior shape corresponding to at least sides of the recess of the aerodynamic shell part, d) supplying resin to said fiber-reinforcement material and optional sandwich core material, e) curing or preconsolidating the resin, and f) removing the one or more inserts.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 21, 2017
    Assignee: LM WP PATENT HOLDING A/S
    Inventors: Martin Dahl, Lars Nielsen
  • Patent number: 9528378
    Abstract: A turbine engine blade of composite material comprising fiber reinforcement obtained by multilayer weaving of yarns and densified by a matrix. The blade has a first portion constituting an airfoil forming a single piece with at least one second portion constituting a blade root. The fiber reinforcement portions corresponding to the first and second portions of the blade are mutually interleaved, at least in part, with yarns of the second fiber reinforcement portion penetrating into the first fiber reinforcement portion.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: December 27, 2016
    Assignees: SNECMA, HERAKLES
    Inventors: Julien Mateo, Clément Roussille, David Marsal, Gilles Ansorena, Ivan Herraiz
  • Patent number: 9505145
    Abstract: A hybrid part for use in a gas turbine engine has a platform and an attachment feature. The platform and an exterior portion of the attachment feature are formed from a monolithic ceramic material. A ceramic matrix composite material is located adjacent interior portions of the platform and the attachment feature and is bonded to the monolithic ceramic material.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: November 29, 2016
    Assignee: United Technologies Corporation
    Inventors: Michael G McCaffrey, John E Holowczak
  • Patent number: 9494135
    Abstract: A wind turbine blade with a blade attachment is provided. A tip end of the wind turbine blade is connected with the blade attachment by a glue-interface. The glue-interface is arranged between the tip end of the blade and the blade attachment. The glue-interface is arranged in a circumferential manner in view to the tip end of the blade and in view to the blade attachment. The blade attachment includes a core with a surface, while the core is surrounded by this surface. The blade attachment, which comprises the core and the surface, is completely made of one foam, showing at least two different densities. That part of the surface of the core, which is arranged adjacent to the glue-interface, is made of foam with a first density, while the chosen first density prevents the infusion of water from the glue-interface into the core.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: November 15, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Jeppe Funk Kirkegaard
  • Patent number: 9441492
    Abstract: An aircraft rotor blade having a root portion having a through seat and designed for connection to the rotor; and a main portion extending from the root portion. The blade is produced by polymerizing an assembly having a main structure of composite material, and a composite material covering defining the outer surface of the blade. At the root portion, the main structure has a contoured block; and a lamina member extending about at least part of the block, and having a first part adhering to a first peripheral portion of the block, and a second part spaced apart from and facing a second peripheral portion of the block to form the seat; the lamina member having a pre-preg of continuous unidirectional fibers.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: September 13, 2016
    Assignee: AGUSTAWESTLAND S.P.A.
    Inventors: Fabio Nannoni, Francesco Scapinello, Giuseppe Manenti
  • Patent number: 9429140
    Abstract: Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: August 30, 2016
    Assignee: SENVION GMBH
    Inventors: Joel D. Gruhn, Ethan Franklin, Kameshwaran Narasimhan
  • Patent number: 9403335
    Abstract: A method for manufacturing a wind turbine rotor blade having a trailing edge by Vacuum Assisted Resin Transfer Molding is described. A number of layers having fiber material are laid up onto the inner surface of a first mold part. A plurality of fiber rovings is laid up onto the number of layers at a position which forms the trailing edge of the blade. The blade is cast using Vacuum Assisted Resin Transfer Molding.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: August 2, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Kristian Lehmann Madsen
  • Patent number: 9394882
    Abstract: Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: July 19, 2016
    Assignee: SENVION GMBH
    Inventors: Joel D. Gruhn, Ethan Franklin, Kameshwaran Narasimhan
  • Patent number: 9334743
    Abstract: A Ceramic Matrix Composites (CMC) airfoil for a gas turbine engine includes a first multiple of CMC plies which define a suction side, a first airfoil portion of the first multiple of CMC plies at least partially parallel to an airfoil axis. A second multiple of CMC plies define a pressure side, a second airfoil portion of the second multiple of CMC plies at least partially parallel to the airfoil axis and bonded to the first airfoil portion.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: May 10, 2016
    Assignee: United Technologies Corporation
    Inventors: Ioannis Alvanos, Gabriel L. Suciu, Douglas M. Berczik, John D. Riehl, Kevin L. Rugg
  • Patent number: 9316203
    Abstract: A blade connection for a rotor blade of a wind turbine having a plurality of receptacles which extend in the longitudinal direction of the rotor blade and can each receive a longitudinal bolt and are in contact with a component having an inner thread for the longitudinal bolt. The rotor blade is manufactured from two materials, at least in the region of the blade connection, wherein a first material is a composite material, and a second material is a composite material provided with at least one reinforcement layer made of metal and/or ceramic. The receptacles are composed of the first material and the second material is bonded to the first material.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: April 19, 2016
    Assignee: Nordex Energy GmbH
    Inventor: Christian Guenther
  • Patent number: 9267388
    Abstract: Disclosed herein is a production method of a shroud segment that includes a forming process of molding a cylindrical fiber fabric (10) into a shroud segment shape by pressing a cylindrical surface of the fiber fabric, and a matrix forming process of impregnating the fiber fabric molded into the shroud segment shape with a matrix.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: February 23, 2016
    Assignee: IHI CORPORATION
    Inventors: Yousuke Mizokami, Nobuya Tao, Takashi Tamura
  • Patent number: 9248612
    Abstract: A containment case comprises a composite core, with an inner and outer surface, at least one puncture resistant layer bonded to the inner surface of the composite core and at least one energy capture layer bonded to the outer surface of the composite core. The puncture resistant layer having a high through-thickness shear strength and high interlaminar toughness at impact. The energy capture layer having a high in-plane tensile strength and low resistance to delamination and fiber-matrix debonding at impact. A method of fabricating a containment case includes the steps of disposing one or more layers of a puncture resistant material on a layup mandrel, disposing one more layers of a structural composite material on an exterior surface of the puncture resistant material, disposing one or more layers of an energy capture material on an exterior surface of the structural material and curing a resin in the plurality of layers.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: February 2, 2016
    Assignee: General Electric Company
    Inventors: Qi Zhu, Scott Roger Finn
  • Patent number: 9234430
    Abstract: A ceramic matrix composite article and a process of fabricating a ceramic matrix composite are disclosed. The ceramic matrix composite article includes a matrix distribution pattern formed by a manifold and ceramic matrix composite plies laid up on the matrix distribution pattern, includes the manifold, or a combination thereof. The manifold includes one or more matrix distribution channels operably connected to a delivery interface, the delivery interface configured for providing matrix material to one or more of the ceramic matrix composite plies. The process includes providing the manifold, forming the matrix distribution pattern by transporting the matrix material through the manifold, and contacting the ceramic matrix composite plies with the matrix material.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: January 12, 2016
    Assignee: GENERAL ELECTRIC CORPORATION
    Inventors: Ronald Ralph Cairo, Paul Stephen DiMascio, Jason Robert Parolini
  • Patent number: 9234497
    Abstract: A rotor blade for a wind turbine is provided. The rotor blade includes an elongate blade base body with a number of connecting elements each having at least one axially extending connecting portion adapted to be connected with at least one corresponding connecting portion of a rotor hub of a wind turbine, wherein the respective connecting elements are connected to at least two circumferentially extending connecting members with the connecting members being adjacently disposed in circumferential direction so as to build a ring-like shape. Further, a wind turbine with such a rotor blade is provided.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: January 12, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Erik Grove-Nielsen
  • Patent number: 9217333
    Abstract: A composite material turbomachine vane comprising a blade is provided, wherein the vane comprises a first resin reinforced with long fibers and a second resin reinforced with short fibers, the first and second resins being chemically compatible or identical, the long fibers serving to stiffen the vane and the short fibers dispersed in the second resin serving to fill in the parts of the vane that are not reinforced by the long fibers and giving the vane its substantially final shape.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 22, 2015
    Assignee: Techspace Aero S.A.
    Inventors: Sacha Berard, Hervé Grelin
  • Patent number: 9212560
    Abstract: A method of forming a component for use in a gas turbine engine includes the steps of forming an airfoil/root assembly; creating a platform assembly structure having an opening; inserting the airfoil/root assembly into the opening; and bonding the platform assembly structure to the airfoil/root assembly to form the component.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 15, 2015
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Michael G. McCaffrey
  • Patent number: 9181927
    Abstract: A lightning protection system for a wind turbine includes at least one insulated high-voltage cable, a pick-up unit and an additional insulated high-voltage cable. The at least one insulated high-voltage cable is electrically connected to a lightning receptor and to the pick-up unit. The pick-up unit is electrically connectable to an electrically grounded member by the additional insulated high-voltage cable.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: November 10, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Bastian Lewke, Kaj Olsen
  • Patent number: 9136685
    Abstract: A blade for wind power generation includes a lightning receptor configured to form a part of the surface of the blade, and a lightning receiving protrusion that protrudes outward from the surface of the lightning receptor. The lightning receiving protrusion is provided to a surface boundary between the blade and the lightning receptor. The surface boundary configured to protect against the lightning is positioned within a radius of a circle, which is centered on a tip of the lightning receiving protrusion and which has a radius of twice the length of the lightning receiving protrusion. A point where electric field concentration on the surface of the lightning receptor is greatest is moved from the boundary to the tip of the lightning receiving protrusion, so as to significantly reduce a possibility of blade damage associated with lightning striking the boundary when being stroke by the lightning.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: September 15, 2015
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Jun Suzuki, Atsutoshi Muto
  • Patent number: 9103214
    Abstract: A vane structure for a gas turbine engine includes an airfoil section with a platform segment adjacent to a ring. An insert is adjacent to the platform segment and an overwrap is wound around the ring and the insert.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: August 11, 2015
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Michael G. McCaffrey