With Means Moving Working Fluid Deflecting Working Member Part During Operation (e.g., Aileron, Etc.) Patents (Class 416/23)
  • Patent number: 10094358
    Abstract: Double blade airfoils and related systems are disclosed. The double blade design may efficiently use a minimal amount of material yet achieve exceptional aerodynamic efficiencies well above the previously understood theoretical maximum. The disclosed designs may operate at lower wind speeds than those known in the art. Furthermore, the balance of forces generated by the disclosed designs may also reduce the stress felt by the airfoils and rotor, enhancing the longevity of the system.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: October 9, 2018
    Assignee: Winnova Energy LLC
    Inventor: Yücel Hökelek
  • Patent number: 9932965
    Abstract: A vertical wind generator with at least two blades which are rotatably mounted with regard to a central vertical rotation axis, wherein the blades each comprise a main blade with a longitudinal side and a fore blade attached to the longitudinal side of the main blade, wherein the fore blade is movable between a first position and a second position each with regard to the main blade.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: April 3, 2018
    Assignee: Thorsten RATH
    Inventor: Thorsten Rath
  • Patent number: 9815553
    Abstract: According to some embodiments, a rotorcraft includes a secondary rotor control system located proximate to the empennage of the rotorcraft. The secondary rotor control system includes at least one hydraulic pump and at least one hydraulic actuator. The at least one hydraulic pump is located proximate to the empennage. The at least one hydraulic actuator is located proximate to the empennage and configured to adjust at least one operating characteristic of the at least one secondary rotor blade.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: November 14, 2017
    Assignee: Bell Helicopter Tectron Inc.
    Inventors: James M. McCollough, Carlos A. Fenny
  • Patent number: 9732769
    Abstract: A servo-control having at least one movable cylinder that includes a hydraulic directional control valve. The hydraulic valve includes a control shaft that is rotatable about a longitudinal axis, the control shaft being connected to a distributor slide. The servo-control including a stationary abutment member secured to a cylinder and an input lever situated outside the cylinder. The input lever is connected to the control shaft and includes a stop portion arranged in the abutment member. The servo-control includes movement means for moving the input lever longitudinally, a first abutment surface of the abutment member limiting a travel amplitude of the stop portion when the input lever is in a first position.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: August 15, 2017
    Assignee: AIRBUS HELICOPTERS
    Inventors: Jean-Romain Bihel, Thibaut Marger, Christophe Pujol, Alexandre Pantaine
  • Patent number: 9714642
    Abstract: A lifting device for connecting two rotor blade segments of a wind turbine at the location of the wind turbine is adapted to move in the longitudinal direction of the rotor blade. The lifting device includes a frame structure, means for supporting and guiding the frame structure in relation to the rotor blade, means for lowering and/or lifting the frame structure in relation to the rotor blade, and means for lifting and/or lowering a rotor blade segment.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: July 25, 2017
    Assignee: PP Energy ApS
    Inventor: Paul Teichert
  • Patent number: 9670902
    Abstract: One or more blades for a wind turbine have at least one guide vane (20) having a vane leading edge (22) and vane trailing edge (23), arranged in such that the guide vane (20) is substantially placed over a blade surface (8) of a suction side (16) of the blade (1) and extends in longitudinal direction (5) at least partly along the surface (8) of the root segment (12), wherein a line between the vane leading edge (22), the longitudinal axis (5) of the blade (1) and the chord (3) form at least one starting angle (?), and further wherein a second starting angle (?II) in the transition portion (14) is greater than a first starting angle (?I) in the plain portion (13) and less than a third starting angle (?III) in the profiled portion (15).
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: June 6, 2017
    Assignee: SE Blades Technology B.V.
    Inventor: Iwan Philipsen
  • Patent number: 9651024
    Abstract: Rotor blade assemblies and wind turbines are provided. A rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge and a trailing edge each extending between a tip and a root, the rotor blade defining a span and a chord, the exterior surfaces defining an interior of the rotor blade. The rotor blade assembly further includes a loading assembly, the loading assembly including a weight disposed within the interior and movable generally along the span of the rotor blade, the weight connected to a rotor blade component such that movement of the weight towards the tip causes application of a force to the rotor blade component by the weight. Centrifugal force due to rotation of the rotor blade biases the weight towards the tip.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: May 16, 2017
    Assignee: General Electric Company
    Inventor: Daniel David Soloway
  • Patent number: 9458825
    Abstract: Systems, apparatuses, and methods are provided for actuating one or more load management devices on a wind turbine and/or a wind turbine blade. Each actuator may exhibit one or more beneficial qualities including appropriate actuation speed/force characteristics, size and/or weight characteristics, and/or increased reliability and consistent operation in a variety of operating conditions. According to some aspects, the actuator may be a direct pneumatic actuator, a ramp slide pneumatic actuator, a scissor actuator, a linear induction actuator, a belt actuator, a closed cam follower actuator, a screw drive actuator, a solenoid actuator, a rack and pinion actuator, a cylindrical cam follower actuator, a Y-belt actuator, an offset rotary drive actuator, a tape style actuator, a rigid tape actuator, a deformable membrane actuator, a memory alloy actuator, and/or a crank slide actuator.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 4, 2016
    Assignee: Frontier Wind, LLC
    Inventors: Peter Everett Brooks, Nathan John Burgess, Myron Floyd Miller, Thomas Jay Green
  • Patent number: 9408281
    Abstract: Provided is a wind turbine that includes a tower, a nacelle, a plurality of light sources mounted within the tower and the nacelle, and a wireless lighting control system. The wireless lighting control system includes a first locally controllable switch for controlling power to the plurality of light sources and a second locally controllable switch for controlling power to the plurality of light sources. The first and second locally controllable light switches are located remotely from each other. The wireless lighting control system further includes a remotely controllable light switch located at each of one or more of the light sources. The remotely controllable switch is configured to wirelessly receive a switch-on signal generated in response to manipulation of at least one of the first and second locally controllable switches, and switch on power to the corresponding light source in response to receiving the switch-on signal.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: August 2, 2016
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Michele Lucente, Paw Rosenvard, Peter Rasmussen, Carsten Lindgaard Jensen
  • Patent number: 9200614
    Abstract: A wind turbine with a rotor mounted on a hub section, wherein the rotor comprises a plurality of blades, at least one of which comprises a main blade section, which is optionally pitchable, and an auxiliary blade section mounted to the hub section. The auxiliary blade section is arranged in the area of a leading edge or of a trailing edge of the main blade, so that each blade is thereby provided with a leading edge slat or a trailing edge flap formed by the auxiliary blade section to increase the planform area of the blade and increase aerodynamic lift. A control method for a wind turbine controls a main blade section and an auxiliary blade section to provide different angles of attack to reduce undesired loads at sudden extreme changes of wind speed, e.g. during idling of the wind turbine. In a separate aspect, the invention provides a wind turbine having a blade with a non-pitchable leading edge slat, which extends at most 40% of the radius of the rotor in a longitudinal direction of the blade.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: December 1, 2015
    Assignee: Vestas Wind Systems A/S
    Inventor: Kristian Balschmidt Godsk
  • Patent number: 9181982
    Abstract: A blade bearing for mounting a blade of a wind turbine to a hub of the wind turbine comprises inner and outer rings arranged next to each other. One of the inner and outer rings is configured to mount to the blade, and the other is configured to mount to the hub. At least two rows of rolling elements are positioned between the inner and outer rings. Upper and lower rows of the rolling elements are located in respective upper and lower planes. A support structure is secured to the inner ring and extends in a substantially radial direction between the upper and lower planes. The support structure has non-uniform stiffness characteristics in a circumferential direction. A method of manufacturing a blade bearing is also provided.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 10, 2015
    Assignee: Vestas Wind Systems A/S
    Inventors: Peter Lindholst, Jesper Lykkegaard Neubauer, Ole Mølgaard Jeppesen, Torben Friis Baun
  • Patent number: 9181924
    Abstract: An exchange of momentum wind turbine vane having a large area for exchange of momentum which is made rigid with buckleable wing columns capable of automatic self-feathering the vane to protect it from damaging high-speed wind. The large vane area provides very low windspeed startup. In the preferred embodiment the vane is plastic and very inexpensive to manufacture. Four embodiments are described and shown.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: November 10, 2015
    Inventor: Alan J. Smith
  • Patent number: 9175666
    Abstract: A slat (30) extending along an inboard portion of a wind turbine main blade element (22). The slat may have an end vortex modification appendage, such as winglet (34), endplate (64), raked wingtip (70), or down turned wingtip (72), and may be located behind a line defined perpendicular to a mean camber line of the main blade element at a leading edge of the main blade element. At least the leading edge (42S) of the slat may be disposed within a zone (48) of airflow that generally parallels the suction side (40) of the main blade element. The slat may have a flatback trailing edge (44F). Vortex generators (60) may be attached to the slat. Slats may be retrofitted to a wind turbine rotor (20) by attaching them to the spar caps (56) of the blades or to the hub (26) of the rotor.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: November 3, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Drew Eisenberg, Arni T. Steingrimsson, Alonso O. Zamora Rodriguez
  • Patent number: 9151270
    Abstract: An aerodynamic slat (30F) having a flatback trailing edge (44F) extending along and spaced proximate an inboard portion of a wind turbine blade (22). At least the leading edge (42F) of the slat may be disposed within a zone (48) of airflow that is generally parallel to the suction side (40) of the wind turbine blade over a range of air inflow angles. A splitter plate (52) may extend aft from the flatback trailing edge to reduce vortex shedding and extend the effective chord length of the slat. Vortex generators (60) may be attached to the slat. Flatback slats may be retrofitted to a wind turbine rotor (20) by attaching them to the spar caps (56) of the blades or to the hub spinner (28). The flatback slat provides lift on low-lift inboard portions of the wind turbine blade over a range of angles of attack of the inboard portion.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: October 6, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Drew Eisenberg, Peder Bay Enevoldsen
  • Patent number: 9046078
    Abstract: The invention relates to a rotor blade for a wind power plant comprising a rotor blade body, wherein the rotor blade body encloses a hollow space, wherein the rotor blade body comprises a penetration for draining the hollow space, and a functional element, wherein the functional element is displaceably connected to the rotor blade body and is disposed at the penetration. According to the invention, the functional element can be transferred from a closed position into an open position, wherein the functional element can be displaced purely by translation. Improved drainage is thereby achieved and clogging of the drain is prevented, with reduced noise production.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: June 2, 2015
    Assignee: Kenersys GMBH
    Inventor: Alexander Miller
  • Patent number: 9033661
    Abstract: A rotor blade assembly is disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade includes a skin layer that includes the exterior surfaces. The rotor blade assembly further includes a passive spoiler assembly operable to alter a flow past an exterior surface of the rotor blade. The spoiler assembly includes a spoiler feature movable between a non-deployed position and a deployed position. Movement of the spoiler feature from the non-deployed position to the deployed position is caused by a change in an applied force to the spoiler feature by the skin layer.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: May 19, 2015
    Assignee: General Electric Company
    Inventor: David Samuel Pesetsky
  • Publication number: 20150098821
    Abstract: A reverse wind load mitigation device (30) is provided for a wind turbine blade (20). The device (30) comprises a hinge member (32) attachable to a trailing edge (26) of a wind turbine blade (20). The separated flow inducer (34) is associated with the hinge member (32) and is configured to pivot about or with the hinge member (32) toward at least one of the surfaces (40, 42) in response to wind (45) traveling from a direction of the trailing edge (28). The separated flow inducer (34) is effective to induce flow separation (50) over at least one of the surfaces (40, 42).
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Inventors: Edward A. Mayda, Kristian R. Dixon
  • Publication number: 20150098820
    Abstract: An adjustable lift regulating device (30, 32, 40, 50, 52, 56, 60, 68, 72, 76) on an inboard portion of a wind turbine blade (28). The lift regulating device is activated to reduce lift on the inboard portion of the blade by causing flow separation (41) on the suction side (22) of the blade. To compensate for the lost lift, the blade pitch is increased to a running pitch that facilitates stalling on the outer portion of the blade in gusts. This provides passive reduction of fatigue and extreme loads from gusts while allowing full power production under non-gust conditions.
    Type: Application
    Filed: December 5, 2014
    Publication date: April 9, 2015
    Inventors: Kristian R. Dixon, Edward A. Mayda
  • Publication number: 20150064003
    Abstract: A rotor blade assembly is provided having an airflow modifying element for suppressing airflow noise caused by a drain hole. The rotor blade assembly includes at least one rotor blade including a body shell extending between a blade root and a blade tip. Further, the rotor blade includes at least one drain hole having a diameter. The drain hole is configured within the body shell of the rotor blade. At least one airflow modifying element is configured on the body shell a predetermined distance from the drain hole such that the airflow modifying element reduces airflow noise caused by the drain hole. In one embodiment, the predetermined distance is substantially equal to the diameter of the drain hole.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: General Electric Company
    Inventor: Roger Drobietz
  • Patent number: 8956114
    Abstract: There is provided a free standing tidal power plant without a dam structure set to take up kinetic energy from a water flow. The tidal power plant includes a propeller-shaped water turbine in horizontal rotor configuration with rotor blades, the rotor blades having bidirectional profiles, wherein the rotor blades are fastened to a revolving unit, which defines a rotational plane, and an electric generator at least indirectly driven by the water turbine. Each rotor blade is associated with a first swivel axis and a second swivel axis, the first axis and the second swivel axis extending substantially along a longitudinal axes of a first coupling element and a second coupling element, respectively. The revolving unit includes a planar guide region having a sliding apparatus, a first guide groove and a second guide groove, the sliding apparatus connected to the rotor blade to transmit rotor blade forces.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: February 17, 2015
    Assignee: Voith Patent GmbH
    Inventors: Raphael Arlitt, Ralf Starzmann, Frank Biskup
  • Publication number: 20150037149
    Abstract: A multirotor rotorcraft control system for effectuating flight control. The multirotor rotorcraft has at least two or more rotor assemblies. The control system preferably includes at least one flap for each rotor blade and at least one actuator for each rotor assembly. The rotor assemblies and the flap(s) and actuator(s) for each assembly are used for flight control. This invention does not require a complex fixed pitch control system or a high frequency servo control system. This invention can control blade angle of attack during autorotation.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Inventors: Alfred Alan Gates, Fu-Shang John Wei
  • Patent number: 8936435
    Abstract: A wind turbine blade includes a root region. A first extension (LEX) is attached to the leading edge side of the root region while a trailing edge strake (TES) is attached to the trailing edge side of the root region. The LEX and TES each include an outer profile that becomes more pronounced relative to their respective locations in the root region as the root region of the wind turbine blade morphs from a substantially cylindrical shape to a substantially airfoil shape. The LEX provides both optimal angle of attack and lift generation in the root region, while the TES mitigates airflow separation and enhances airfoil lift in the root region.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: January 20, 2015
    Assignee: General Electric Company
    Inventors: Anurag Gupta, Arathi Kamath Gopinath
  • Publication number: 20150010401
    Abstract: A flexbeam for a rotor blade is provided and includes a first end coupled to a body of the rotor blade and a second end coupled to a flap disposed along a trailing edge of the body to pitch about a pitching axis defined along a span of the body and a flexbeam body extending from the first end to the second end and being configured to retain the flap under a first loading and being flexible about the pitching axis.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 8, 2015
    Inventors: Kris Kopanski, Devon Cowles, David E. Bruno, Frederick J. Miner, Benjamin Reed Hein
  • Publication number: 20150010400
    Abstract: A rotor blade for a wind turbine is disclosed. The rotor blade may generally include a shell having a pressure side and a suction side. The shell may define an outer surface along the pressure and suction sides over which an airflow travels. The rotor blade may also include a spoiler having a fixed end and a free end. The fixed end is connected to the outer surface so as to enable a hinge action, such as a living hinge. The free end includes a top flange and a bottom flange configured to engage opposite sides of the shell and is pivotal relative to the fixed end between a recessed position and an elevated position. The free end has a range of motion limited by contact of the top flange and the bottom flange with the shell. Further, the spoiler is configured to separate the airflow from the outer surface when the spoiler is in the elevated position.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 8, 2015
    Inventors: Alexander William Vossler, Aaron A. Yarbrough, Christopher Daniel Caruso
  • Publication number: 20150003985
    Abstract: Rotor blades for a wind turbines include a shell having a pressure side and a suction side and a plurality of surface features disposed adjacent at least one of the pressure side and the section side. The plurality of surface features is further moveable between a spoiler position and a vortex generator position.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 1, 2015
    Inventors: Christopher Daniel Caruso, James Robert Tobin
  • Patent number: 8915710
    Abstract: A device for controlling the pitch of a helicopter's rotor blade, the device having a BLDC motor based actuator; and at least one control surface operatively connected to the BLDC motor based actuator. The actuator and the control surface are preferably fully integrated into the interior profile of the rotor blade and are capable of controlling the PFC of the helicopter and improving HHC during operation by reducing noise and vibration. The motor is preferably a high power density motor incorporating rare earth permanent magnets connected to a roller/ball screw or planetary gear set to provide the right combination of force/torque, stroke and frequency.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 23, 2014
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Zaffir Chaudhry, Brian E. Wake, Fanping Sun, Richard Jeremy Bedwell, Jimmy Lin-Min Yeh, Lee A. Hoffman
  • Patent number: 8899923
    Abstract: The invention relates to a wind turbine blade comprising a device for modifying the aerodynamic surface or shape of the blade in an area of the trailing edge, and activation mechanisms for controlling the position and/or movement of the device. The device is at least partly divided into a number of sections by interstices or connecting portions having a higher elasticity. Hereby the overall longitudinal bending flexibility of the device is increased which in turn increases the operability of the aerodynamic device and reduces the wear of the system. The interstices may be open, comprise a filler material, or optionally be covered by an elastic film.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: December 2, 2014
    Assignee: Vestas Wind Systems A/S
    Inventor: Mark Hancock
  • Publication number: 20140334928
    Abstract: A control method for a wind turbine, in particular for a wind turbine blade is described. The control method makes use of the blade mode shapes, or natural vibration shapes, of the blade to detect the excitement level of the blade natural vibrations, and controls active lift devices on the blade in an effort to reduce the excitement levels, to reduce loading in the blade and the overall wind turbine structure. There is also provided a method of designing a wind turbine blade for use in such a method.
    Type: Application
    Filed: December 5, 2012
    Publication date: November 13, 2014
    Inventors: Peter Baek, Christian Frank Andersen, Mark Olaf Slot, Casper Skovby, Simon Berg Bojesen, Morten Ravn, Michael Klitgaard
  • Patent number: 8876473
    Abstract: A hinged connection apparatus is described for securing a first wind turbine component to a second. The first wind turbine component may be a wind turbine blade (10) and the second wind turbine component may be a control surface such as an aileron (11). The first or second wind turbine component comprises at least one hinge housing in which a hinge pin (16, 26) is retained. The hinge pin (16, 26) may be extended from a retracted position into an extended position in which it engages with a hinge recess on the other wind turbine component to form a connection. A locking mechanism is provided for securing the hinge pin in place. The hinge pin may be extended manually or automatically by an actuator.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: November 4, 2014
    Assignee: Vestas Wind Systems A/S
    Inventors: Carsten Hein Westergaard, Mark Hancock, Srikanth Narasimalu
  • Patent number: 8864462
    Abstract: An active sensing system for wind turbines is described. The sensing system may include a plurality of ports, a local sensing device and a load mitigation device and may be operably coupled to a control system. The plurality of ports, local sensing device, and load mitigation device may be operably coupled and configured to monitor air pressure on wind turbine blades, determine if proper sensing operation is occurring, and eradicate an obstruction if proper sensing operation is being prevented by the obstruction. Associated methods performing the sensing and eradication of the obstruction including purging and deicing are disclosed. Wind turbines and wind turbine blades with the active sensing system are also described.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: October 21, 2014
    Assignee: Frontier Wind, LLC
    Inventors: Edward A. Mayda, Jonathon P. Baker, Leigh Zalusky, Thomas Jay Green
  • Patent number: 8851840
    Abstract: The invention relates to a wind turbine blade with devices for modifying the aerodynamic surface or shape of the blade. The position and movement of these devices are controlled by a pneumatic actuator powered by pressure from a pressure chamber connected to the actuator via a valve system controlling the powering. The valve system in return is operated by a control unit conveying control signals to the valve system via a signal communication pathway. The communication pathway may comprise a power link or pressure tubes with a liquid or a gas. In one embodiment the gas used is of a lower molecular weight than 28.9 kg/kmol and thereby lower than air, whereby the speed of the pressure signals being sent from the control unit is increased and thereby the operational speed of the aerodynamic devices. The invention further relates to a wind turbine comprising a tower, a nacelle mounted to one end of the tower, and a rotor with at least one wind turbine blade according to the above.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: October 7, 2014
    Assignee: Vestas Wind Systems A/S
    Inventors: Mark Hancock, Nicolas Dudley Barlow, Dick Veldkamp
  • Publication number: 20140271191
    Abstract: A mounting arrangement for a load compensating device is provided. The mounting arrangement includes a cover sheet connected to a housing via a plurality of protrusions. The cover sheet may form a portion of a surface of an airfoil rotor blade. The housing may include a plurality of clamps extending outward from the housing and configured to contact an inner surface of the airfoil rotor blade. By tightening the clamps onto the interior surface, the device is mounted to the blade and the cover sheet may deform to correspond to the airfoil geometry of the airfoil rotor blade. The mounting arrangement may further include a mounting plate configured to permit the housing to float within the aperture formed in the airfoil rotor blade, and a tab arranged on one end of the mounting plate to distribute centrifugal force to the surface of the airfoil rotor blade.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: FRONTIER WIND, LLC
    Inventors: Peter Everett Brooks, Nathan John Burgess, Myron Floyd Miller
  • Publication number: 20140271192
    Abstract: Systems, apparatuses, and methods are provided for actuating one or more load management devices on a wind turbine and/or a wind turbine blade. Each actuator may exhibit one or more beneficial qualities including appropriate actuation speed/force characteristics, size and/or weight characteristics, and/or increased reliability and consistent operation in a variety of operating conditions. According to some aspects, the actuator may be a direct pneumatic actuator, a ramp slide pneumatic actuator, a scissor actuator, a linear induction actuator, a belt actuator, a closed cam follower actuator, a screw drive actuator, a solenoid actuator, a rack and pinion actuator, a cylindrical cam follower actuator, a Y-belt actuator, an offset rotary drive actuator, a tape style actuator, a rigid tape actuator, a deformable membrane actuator, a memory alloy actuator, and/or a crank slide actuator.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Peter Everett Brooks, Nathan John Burgess, Myron Floyd Miller, Thomas Jay Green
  • Publication number: 20140241878
    Abstract: In one aspect, a method for controlling a wind turbine based on an identified surface condition of a rotor blade may include monitoring an operating parameter of the wind turbine to obtain parameter data related to the operating parameter as an operating input of the wind turbine changes, analyzing the parameter data to identify a roughness state of the rotor blade and performing a corrective action in response to the identified roughness state.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Andreas Herrig, Saskia Gerarda Honhoff
  • Publication number: 20140234104
    Abstract: A rotor blade (1) with an exterior shell (20) extending in a span and chord wise direction and at least one control flap (4) extending in essentially span wise direction to said exterior shell (20). Load transmission means inside said blade chamber (7) comprise piling type housings (13) respectively with one actuator (8, 9), one flap drive (10, 11) and a longitudinal girder (15). Said at least one piling type housing (13) comprises at least one upper strap (14) and at least one lower strap (14) oriented essentially in said chord direction in between said longitudinal girder (15) on the one side and the support for said at least one actuator (8, 9) on the other side, each of said upper and lower straps (14) being symmetric aligned in chord direction relative to at least two pivot bearings (35, 36). Said upper and lower straps (14) are stiff in chord direction and flexible in span wise direction.
    Type: Application
    Filed: February 14, 2014
    Publication date: August 21, 2014
    Applicant: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
    Inventors: Rupert PFALLER, Bernhard ENENKL
  • Publication number: 20140186180
    Abstract: A vortex generator is useable in a model in a fluid-dynamic channel. In order to save time during the development of vehicles, in particular, aircraft, to save wind tunnel time, it is suggested to configure the vortex generator to be switchable. A switchable vortex generator can be used, in particular, on models in fluid-dynamic channels and in fluid-dynamic channel tests.
    Type: Application
    Filed: November 26, 2013
    Publication date: July 3, 2014
    Applicant: Airbus Deutschland GmbH
    Inventors: Klaus-Peter Neitzke, Karin Bauer, Christian Bolzmacher, Winfried Kupke
  • Patent number: 8757557
    Abstract: According to an embodiment disclosed herein, a gurney flap assembly includes an actuator, and a flexible body attaching to the actuator, the body having a downwardly depending flap for moving into and out of an airstream in a pressure side of a wing, wherein the flexible body flexes in reaction to motion of the actuator. This increases the lift force of the rotor blade, wing or aerofoil blade.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: June 24, 2014
    Assignee: Claverham Ltd.
    Inventors: Paul R. Brewer, Steven Shorcott, Reg R. Raval
  • Patent number: 8734104
    Abstract: A wear-free, self-contained control device for an aerodynamic emergency brake of a wind energy converter is presented that comprises multiple components in order to provide a most effective means to control the rotation of a vertical axis wind turbine by a brake, which is able to activate itself without external actuation in malfunction situations and is able to shut down the vertical axis wind turbine. Therefore, a mass element is utilized to store mechanical energy which in turn is used to deploy an aerodynamic braking operation. It also represents a means to control and limit the amount of torque, as absorbed by the turbine in high-wind conditions, and thus provides the ability to harvest electrical/mechanical energy, beyond the normal operational wind speeds of turbines.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: May 27, 2014
    Inventor: Claus Colling
  • Patent number: 8727722
    Abstract: A system and methods for reducing vibration in a rotatable member are provided. The system includes a blade tracking sensor, a rotatable member comprising an adjustable aspect, and a control computer. The control computer is configured to determine an axial position of each blade, determine a first blade that is displaced by a greatest distance along the axis in a first direction, modify an aspect of the first blade to facilitate reducing a vibration in the rotary blade system, determine if the vibration level in the rotary blade system is reduced, and select another rotatable member to modify such that a vibration in the rotary blade system is facilitated being further reduced.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: Peter B. Houser, John Henry Studer, Gerald L. Vossler, John Hafer
  • Patent number: 8721282
    Abstract: A system for actively controlling the span-wise rotational twist of a hollow beam along its longitudinal axis, including a hollow beam structure having a leading edge and a trailing edge region, the beam being split along its length, an actuator arranged between split surfaces of the beam, the actuator adapted to move the split surfaces in a longitudinal direction relative to each other, inducing a twist in the beam. The hollow beam is affixed to an external structure at one or both ends, with only the zero warping displacement points of the beam being attached to the external structure, material or device. In one embodiment, the actuator is a plurality of solid blocks with high thermal expansion coefficients arranged between frames of the split surfaces of the beam, with alternating blocks being heated by resistance heaters to cause expansion in the spanwise longitudinal direction.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: May 13, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: James P. Thomas, Michael J. O'Brien, William R. Pogue, III
  • Publication number: 20140127016
    Abstract: A band-type fan structure includes a transmission band body and multiple blades. The transmission band body has a lengthwise direction and a widthwise direction. The blades are side by side disposed on the transmission band body in parallel to each other and arranged in the lengthwise direction of the transmission band body. Each two adjacent blades define therebetween a flow way. The transmission band body is movable in the lengthwise direction, whereby the blades are driven by the transmission band body to transversely move to create an air volume. The band-type fan structure has a greatly minified volume. Also, the band-type fan structure overcomes the shortcoming of unstable operation of the conventional fan caused by deflection of the blades.
    Type: Application
    Filed: November 7, 2012
    Publication date: May 8, 2014
    Applicant: ASIA VITAL COMPONENTS CO., LTD.
    Inventors: Bor-Haw Chang, Liang-Ji Chang
  • Patent number: 8714925
    Abstract: An aerodynamic brake assembly for use with an airfoil such as the blade of a wind turbine rotor comprises deployable upper and/or lower spoiler plates incorporated in or attached to the airfoil. The spoiler plates can deploy under the influence of centrifugal forces when the rotating airfoil or rotor blade reaches a pre-determined rotational speed. The aerodynamic brake assembly may be integrated within the airfoil or attached to the tip of the airfoil such that, when not deployed, the upper and lower spoiler plates have a profile that approximately conforms to the profile of the part of the airfoil to which it the brake assembly is attached. Thus in a non-deployed state, the spoiler plates have a non-detrimental effect on the performance of the airfoil, and may even contribute to its aerodynamic lift properties.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: May 6, 2014
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Christopher C. Langenfeld, Stanley B. Smith, III, Christopher M. Werner
  • Publication number: 20140112780
    Abstract: A wind turbine is provided. The wind turbine includes at least one blade having a pressure side, a suction side, a leading edge, and a trailing edge that define an airfoil-shaped profile. The pressure side has a morphable region. The wind turbine also includes a control system configured to activate the morphable region to alter the airfoil-shaped profile and reduce negative lift generated by the blade when the blade is oriented at a negative lift angle.
    Type: Application
    Filed: December 31, 2013
    Publication date: April 24, 2014
    Inventors: Andreas Herrig, Biju Nanukuttan, JR., Christian Aloysius Carroll
  • Publication number: 20140099204
    Abstract: Braking devices for wind turbines having a vertical axis are disclosed. An example braking device includes a flap able to tip about a tipping axis. The example flap has a center of gravity positioned outside the tipping axis. In addition, the example braking device disclosed herein includes a torque limiter having a disengagement torque. In addition, the example flap is mounted on the torque limiter, and the torque limiter is to allow the flap to tip through a tipping angle about the tipping axis for a rotational speed of the flap about the vertical axis which induces a torque at the torque limiter greater than or equal to the disengagement torque.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 10, 2014
    Inventor: Yves Debleser
  • Patent number: 8690535
    Abstract: A sensor system for measuring aerodynamic loads acting on a wind turbine rotor blade is disclosed. The measured aerodynamic loads can be converted to an angle of attack of the resulting wind which flows past the moving rotor blade. The sensor is realized as a trailing edge flap which is elastically moveable relative the main part of the wind turbine blade. By measuring motion of the trailing edge flap or corresponding motions of components of the sensor system, the aerodynamic forces acting on the blade can be determined. Due to the relative small dimensions of the sensor flap and the relative small displacements of the flap, the sensor system only affects the aerodynamic properties insignificantly.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: April 8, 2014
    Assignee: Vestas Wind Systems A/S
    Inventors: Chee Kang Lim, Teck Bin Arthur Lim, Kok Leong Chong, Li Hong Idris Lim, Whye Ghee Kim, Tian Lim
  • Patent number: 8684690
    Abstract: A variable chord morphing helicopter rotor blade is disclosed. The variable chord morphing helicopter rotor blade includes an extensible quasi-static chord section connected to the rotor blade, an adjusted airfoil chord length of the rotor blade corresponding to extension of the quasi-static chord section relative to a baseline airfoil chord length, the adjusted airfoil chord length determined according to helicopter flight conditions.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: April 1, 2014
    Assignees: Agustawestland North America, Inc
    Inventor: Farhan Gandhi
  • Publication number: 20140083216
    Abstract: A rotor blade assembly includes a rotor blade, a rotatable flap portion disposed along a span of the rotor blade. A rotary actuator is located inside the rotor blade and is operably connected to the flap portion to rotate the flap portion about a flap axis. A rotary-winged aircraft includes an airframe and a main rotor assembly operably connected to the airframe. The main rotor assembly includes a plurality of rotor blade assemblies rotatable about a rotor assembly axis. At least one rotor blade assembly of the plurality of rotor blade assemblies includes a rotor blade and a rotatable flap portion disposed along a span of the rotor blade. A rotary actuator located inside the rotor blade and is operably connected to the flap portion to rotate the flap portion about a flap axis. The rotary actuator is absent oil, grease or other fluid lubricant.
    Type: Application
    Filed: May 15, 2013
    Publication date: March 27, 2014
    Inventors: Paul R. Brewer, Suat Bekircan, Reg R. Raval
  • Publication number: 20140064965
    Abstract: In accordance with one embodiment of the present application, an actuation system is configured for actuation of an airfoil member with a flap mechanism. The actuation system can include an upper drive tape and a lower drive tape, each partially wrapped around a first bearing and second bearing. An inboard frame can be actuated by at least one linear actuator. Similarly, an outboard frame can be actuated by at least one linear actuator. The inboard frame is coupled to the upper drive tape, while the outboard frame is coupled to the lower drive tape. An actuation of the inboard frame and outboard frame in a reciprocal manner acts move a flap input lever reciprocally upward and downward. A flap mechanism is configured to convert the movement of the flap input lever into rotational movements of the airfoil member.
    Type: Application
    Filed: August 28, 2012
    Publication date: March 6, 2014
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Troy C. Schank, Peter H. Kintzinger, Jonathan A. Knoll, Christopher E. Foskey
  • Publication number: 20140064962
    Abstract: A rotor blade assembly includes a rotor blade and a movable trim tab located along a span of the rotor blade. A linear positioner is located inside the rotor blade and operably connected to the trim tab to move the trim tab thereby reducing rotor blade vibration. A method for reducing vibration of a rotor assembly includes energizing a linear positioner located inside a rotor blade of the rotor assembly and moving an output piston of the linear positioner. A trim tab located at the rotor blade is moved to a selected trim tab angle relative to the rotor blade by the output piston, and the linear positioner is deenergized thereby locking the trim tab at the selected trim tab angle.
    Type: Application
    Filed: July 23, 2013
    Publication date: March 6, 2014
    Applicant: Claverham LTD.
    Inventors: Paul R. Brewer, Suat Bekircan
  • Publication number: 20140064960
    Abstract: In accordance with one embodiment of the present application, an actuation system is configured for actuation of an airfoil member with a flap mechanism. The actuation system can include an upper drive tape and a lower drive tape, each partially wrapped around a first bearing and second bearing. An inboard frame can be actuated by at least one linear actuator. Similarly, an outboard frame can be actuated by at least one linear actuator. The inboard frame is coupled to the upper drive tape, while the outboard frame is coupled to the lower drive tape. An actuation of the inboard frame and outboard frame in a reciprocal manner acts move a flap input lever reciprocally upward and downward. A flap mechanism is configured to convert the movement of the flap input lever into rotational movements of the airfoil member.
    Type: Application
    Filed: August 28, 2012
    Publication date: March 6, 2014
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Troy C. Schank, Peter H. Kintzinger, Jonathan A. Knoll, Christopher E. Foskey