With Means Moving Working Fluid Deflecting Working Member Part During Operation (e.g., Aileron, Etc.) Patents (Class 416/23)
  • Patent number: 8251657
    Abstract: The present invention includes a rotor blade (20) having a blade body (30) with a leading edge (26) and a trailing edge (28) and opposed first and second surfaces (34, 36) extending there between defining an airfoil shape (32) in cross-section. A passageway (42) extends through the blade body (30) between the first and second surfaces (34, 36). A flexible member (60) is sealed over one end (50) of the passageway (42). Advantageously, the flexible member (60) is passively responsive to changes in a differential pressure between the first and second surfaces (34, 36) to move between a deactivated position (62) and an activated position (64) where the flexible member (60) extends away from the airfoil shape (32) to function as a load mitigation device (40) for the wind turbine rotor blade (20).
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: August 28, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: John M. Obrecht, Kevin J. Standish, Paul F. Medina
  • Patent number: 8251656
    Abstract: Actuation system for a wind turbine blade flap. A method of actuating a flap (9) in a wind turbine rotor blade (1) is provided wherein a fluid is used for reversibly expanding an actuating element (16, 17, 19) acting a movable part (13) of the flap by varying the fluid pressure in the actuating element (16, 17, 19). Further, a wind turbine rotor with a rotor blade (1) comprising a flap (9) and a flap actuating system, where the flap comprises a fixed part (12) that is fixed to the rotor blade (1) and a movable part (13) that is movable relative to the fixed part (12), is disclosed, in which the flap actuating system comprises an actuating element (16, 17, 19) with a reversible changeable volume located between the movable part (13) of the flap and the fixed part (12) of the flap, a fluid within the actuating element (16, 17, 19) the pressure of which is settable and a pressure setting device which is designed to press fluid into or release fluid from the element (16, 17, 19) as to change its volume.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: August 28, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventor: Henrik Stiesdal
  • Patent number: 8246303
    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. In one embodiment, the actuator is a plurality of thermal expansion material blocks alternating with mechanical compression blocks, the thermal expansion material blocks being heated to cause expansion in the spanwise longitudinal direction. Other alternative actuators include a rotary actuators such as a threaded screw, piezoelectric or magnetostrictive blocks, a hydraulic actuator, or a pneumatic actuator. In an embodiment, the beam is an airfoil shape.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: August 21, 2012
    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
  • Patent number: 8215908
    Abstract: An aerodynamic profile includes a main profile body defining a profile depth direction and being shear-flexible in the profile depth direction, a tension-stiff and compression-stiff upper covering skin, a tension-stiff and compression-stiff lower covering skin, wherein the upper and lower covering skins envelope the main profile body, a bearingless and hingeless rear profile deformation region disposed at a rear edge region, and at least one actuator disposed in the main profile body. The at least one actuator is configured to initiate a flexural motion of the main profile body resulting in a curvature of the upper and lower covering skins and to deform the rear profile deformation region and so as to yield a flap deflection directed opposite to a direction of the flexural motion.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: July 10, 2012
    Assignee: Eurocopter Deutschland GmbH
    Inventors: Andree Altmikus, Rupert Pfaller, Bernhard Enenkl
  • Publication number: 20120169060
    Abstract: A wind turbine blade is described, which extends in a spanwise direction from a root end to a tip end and defines an aerodynamic airfoil cross-section between a leading edge and a trailing edge in a chordwise direction transverse to the spanwise direction. The blade has a camber in the chordwise direction and includes a blade body and a moveable flap. The flap is moveable relative to the blade body to vary the camber of the blade. A deformable panel is located between the blade body and the moveable flap. The panel has an undulating profile comprising an alternating succession of ridges and troughs, which each extend in a first direction. The panel is formed of a material having anisotropic intrinsic stiffness with maximum anisotropic intrinsic stiffness being transverse to the first direction. In a preferred embodiment, the deformable panel is corrugated.
    Type: Application
    Filed: September 9, 2010
    Publication date: July 5, 2012
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Wuh Ken Loh, Ying Ning
  • Patent number: 8202052
    Abstract: A blade for a stator in a torque converter, including: a first blade segment connected to an inner circumferential section of the stator; at least one second blade segment, separately formed from the first blade segment, and connected to the inner circumferential section; and a third blade segment, separately formed from the first and second blade segments, and connected to the inner circumferential section. In some aspects, the first, second, and third blade segments include respective outer radial portions and the outer radial portions are fixedly connected. In some aspects, the first and second blade segments are in contact and the second and third blade segments are in contact. In some aspects, the first, second, and third blade segments include respective edges and the first and second blade segments are in contact along the respective edges and the second and third blade segments are in contact along the respective edges.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: June 19, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: William Brees, Gregory A. Heeke
  • Publication number: 20120141272
    Abstract: A wind turbine rotor blade includes a root portion and an airfoil portion extending from the root portion and defined by a leading edge and a trailing edge. The airfoil portion further includes a main foil section and a trailing edge section that is pivotally connected to the main foil section along a span-wise extending hinge line. A passive torsion element is coupled between the main foil section and the trailing edge section. The torsion element is biased to a neutral position wherein the trailing edge section is pivoted chord-wise to a low wind speed position relative to the main foil section. The trailing edge section is self-actuating from the low wind speed position to an increased wind speed position relative to the main foil section against as a function of the biasing force of the torsion element and wind speed over the airfoil section.
    Type: Application
    Filed: October 6, 2011
    Publication date: June 7, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Megan M. Wilson
  • Publication number: 20120141269
    Abstract: A rotor blade assembly for a wind turbine and a method for increasing a loading capability of a rotor blade within a maximum load limit for a wind turbine are disclosed. The rotor blade assembly includes a rotor blade having 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 assembly further includes an extension connected to a surface of the rotor blade, the extension having at least one design characteristic configured for increasing a loading capability of the rotor blade within a maximum load limit for the wind turbine. The design characteristic is one of extension length, extension width, extension curvature, span-wise extension location, chord-wise extension location, or extension angle with respect to a chord line of the rotor blade.
    Type: Application
    Filed: September 9, 2011
    Publication date: June 7, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Philippe Giguere, Stefan Herr, Peter James Fritz, Scott Gabell Riddell, Jeffrey Eric Bergman
  • Publication number: 20120141271
    Abstract: A rotor blade for a wind turbine is disclosed. The rotor blade may generally include a shell having a pressure side and a section side. The shell may define an outer surface along the pressure and suction sides over which an airflow travels. Additionally, the rotor blade may include a spoiler assembly having a deformable membrane disposed adjacent to the outer surface. The deformable membrane may be configured to be deformed relative to the outer surface such that at least a portion of the deformable membrane is movable between an un-actuated position to an actuated position. Additionally, the at least a portion of the deformable membrane may be configured to separate the airflow from the outer surface when in the actuated position.
    Type: Application
    Filed: September 13, 2011
    Publication date: June 7, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Chad Mark Southwick
  • Publication number: 20120141268
    Abstract: A rotor blade assembly and a method for adjusting a loading capability of a rotor blade are disclosed. The rotor blade assembly includes a rotor blade having 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 assembly further includes a spoiler assembly operable to alter a flow past a surface of the rotor blade. The spoiler assembly is incrementally deployable from the surface along one of a length or a width of the spoiler assembly.
    Type: Application
    Filed: August 25, 2011
    Publication date: June 7, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: David Samuel Pesetsky
  • Patent number: 8192161
    Abstract: An apparatus and system for compensating for various load situations in a turbine includes the use of one or more deployable devices configured to extend an air deflector outwardly from a surface of a rotor blade. The air deflector may subsequently be retracted into the rotor blade once the load falls below a certain threshold. Mechanisms for extending and retracting the air deflector may include pneumatic, hydraulic and/or electromechanical devices. Air deflectors are generally configured to modify the air flow around the rotor blade to increase or decrease power generation, or reduce loads so that the risk of potential damage to components of the wind turbine is minimized. Deflectors may be positioned at various chordwise stations including leading-edge, mid-chord, and trailing-edge locations on the upper and lower surfaces at spanwise positions. Accordingly, a plurality of devices can be actuated to aerodynamically control rotor performance and loads based on wind conditions.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: June 5, 2012
    Assignee: Frontier Wind, LLC.
    Inventors: Jonathon P. Baker, Kevin Lee Jackson, Edward A. Mayda, Cornelis P. van Dam
  • Publication number: 20120134815
    Abstract: A blade extension for a rotor blade and a rotor blade assembly for a wind turbine are 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 each extending in a generally span-wise direction between a tip and a root. The rotor blade assembly further includes a blade extension including a first panel and an opposed second panel. Each of the first panel and the second panel includes an interior surface and an exterior surface each extending between a proximal end and a distal end. The distal end of each of the first panel and the second panel is spaced apart from the rotor blade in a generally chord-wise direction in a standard operation position.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 31, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Christian A. Carroll, Stefan Herr, Aaron Yarbrough
  • Publication number: 20120134814
    Abstract: A wind turbine blade includes an air brake flap flush mounted within a recess in the suction side of the blade. The air brake flap is actuatable from a retracted position within the recess to an open position wherein the air brake flap extends transversely or vertically from the suction side. A fail-safe actuator is operatively coupled to the air brake flap and is configured to hold the air brake flap at the retracted position in a powered state of the actuator and to release the air brake flap to the open position upon loss of power to the actuator.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 31, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Edward Lee McGrath, Robert William Ridgway
  • Patent number: 8182231
    Abstract: Wind turbine with a rotor blade relatively insensitive to turbulence because it is more slender than prior blades and is nevertheless able to generate sufficient lift by virtue of the fact that flow enhancing elements such as vortex generators combat flow separation. The slenderness is defined by the chord numbers C and D of which C is defined as C=Ncrclr?2/R2, in which N is the number of blades, cr is the local chord, cl the lift coefficient, r the radial position, ? the tip speed ratio and R the rotor radius. Subsequently, the chord should be less than what follows from the equation C=M in which M=?1.19+9.74Cp?21.01Cp2+17.50Cp3 and Cp is the power coefficient. This wind turbine is subject to about 2-12% less operational loads and to about 5-40% reduced survival wind speed loads compared to classical designs.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: May 22, 2012
    Assignee: Cortenergy BV
    Inventor: Gustave Paul Corten
  • Patent number: 8167554
    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 opening in at least one of the pressure and suction sides. The rotor blade may also include a base and at least two surface features spaced apart along the outer perimeter of the base. The base may generally be movable relative to the opening between a recessed position and an actuated position. Additionally, the base may be rotatable within the shell in order to adjust which of the surface features is received within the opening when the base is moved to the actuated position.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: May 1, 2012
    Assignee: General Electric Corporation
    Inventors: Jing Wang, Edward Lee McGrath, Thomas Joseph Fischetti
  • Patent number: 8162607
    Abstract: A rotor blade including a rotor blade profile including a profile tip region, a profile trailing edge region including a trailing edge and a profile body having a profile core. A covering skin including an upper skin and a lower skin encase the profile core. A reversibly bendable flexural actuator including a first actuator end disposed at the trailing edge region of the rotor blade profile and a second actuator end projecting past the profile body toward the trailing edge. The second actuator end forms part of the trailing edge region and forms a movable rotor blade flap, the movable rotor blade flap being deformable into an arc-shaped rotor blade flap deflection upon a bending of the flexural actuator.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: April 24, 2012
    Assignee: Eurocopter Deutschland GmbH
    Inventors: Boris Grohmann, Christoph Maucher, Andree Altmikus, Stephan Mangelsdorf
  • Patent number: 8157533
    Abstract: A wind turbine blade comprising an active elastic member arranged with access to the surface of the wind turbine blade is provided. The active elastic member is deformable from a first shape to a second shape and the lift coefficient of the airfoil with the active elastic member in the first shape is larger than the lift coefficient of the airfoil with the active elastic member in the second shape. Furthermore, a wind turbine comprising such a wind turbine blade and a method of operating a wind turbine comprising such a wind turbine blade are provided.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: April 17, 2012
    Assignee: Vestas Wind Systems A/S
    Inventors: Kristian Balschmidt Godsk, Thomas S. Bjertrup Nielsen
  • Patent number: 8152465
    Abstract: A rotor blade comprises an inner rotor blade root area, a rotor blade main area disposed adjacent to the inner rotor blade root area along a length of the rotor blade and having an aerodynamically effective rotor blade profile, the profile including a nose area and a rear edge area, and a rotor blade tip disposed adjacent to the rotor blade main area along the length of the rotor blade. The rotor blade tip is configured to be deformable relative to the rotor blade main area and is operatively connected to a first actuator device. The first actuator device is configured to initiate a vertical movement of the rotor blade tip upwards or downwards relative to the lift direction. The vertical movement starts from a neutral position relative to the rotor blade main area.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 10, 2012
    Assignee: Eurocopter Deutschland GmbH
    Inventors: Peter Jaenker, Valentin Kloeppel
  • Publication number: 20120080885
    Abstract: The invention relates to a rotor for fluid flow power generator comprising a plurality of blades obliquely oriented relative to the axis of the rotor, characterized in that it comprises means for varying the obliqueness of the blades.
    Type: Application
    Filed: March 26, 2009
    Publication date: April 5, 2012
    Applicant: NHEOILS (Societie par Actions (Simplifee)
    Inventor: Nordine Haddjeri
  • Publication number: 20120070282
    Abstract: A high torque vertical axis windmill that has blades with curved parts secured together. The second part of each blade is movable to deploy the maximum surface of the blade to the wind for maximum torque during a portion of the cycle of the blades. The second part of each blade is movable to a second position to deploy the minimum surface of the blade to the wind for minimum drag during another portion of the cycle of the blades.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 22, 2012
    Inventors: Ghulam Murtaza Khan, SR., Ghulam Ahmad Khan, JR.
  • Publication number: 20120070284
    Abstract: A hinged connection apparatus is described for securing a first wind turbine blade component to a second. The first wind turbine component may be a wind turbine blade body (10) and the second wind turbine component may be a control surface such as an aileron (11). The first or second wind turbine blade component comprises at least one hinge housing in which a rotary actuator (26) is retained. The rotary actuator (26) may comprise a motor, or in alternative embodiments a material that changes its shape under the influence of an external stimulus, such as a piezo-electric element or a memory alloy. The rotary actuator may be provided as part of the hinge pin connecting the first component to the second.
    Type: Application
    Filed: March 17, 2010
    Publication date: March 22, 2012
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Carsten Hein Westergaard, Mark Hancock, Srikanth Narasimalu
  • Publication number: 20120070283
    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: Application
    Filed: March 17, 2010
    Publication date: March 22, 2012
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Carsten Hein Westergaard, Mark Hancock, Srikanth Narasimalu
  • Patent number: 8133023
    Abstract: An apparatus and method for reducing wind turbine damage includes a propeller having a plurality of blades projecting radially from a hub. The blades may be adjustably combined to form variable cross-sections that either increase or decrease propeller rotation speed dependent on wind speed and weather conditions.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 13, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: Elliott Reitz
  • Publication number: 20120014792
    Abstract: A circulation controlled vertical axis wind turbine is presented. The circulation controlled vertical axis wind turbine comprise one or more airfoils in communication with the turbine via a rotatable support shaft and an airfoil support structure. The one or more airfoils have a blowing slot disposed near the trailing edge, and a controller and control means modulates a flow of air between the blowing slot and an internal cavity of the airfoil.
    Type: Application
    Filed: February 9, 2010
    Publication date: January 19, 2012
    Applicant: WEST VIRGINIA UNIVERSITY
    Inventors: James E. Smith, Franz A. Pertl, Gerald M. Angle, II, Christina N. Yarborough, Andrew J. Nawrocki, Jay P. Wilhelm, Kenneth A. Williams
  • Publication number: 20120009064
    Abstract: The present invention relates to a wind turbine blade for a rotor of a wind turbine having a substantially horizontal rotor shaft. The blade may comprise a profiled contour comprising a pressure side and a suction side as well as a leading edge and a trailing edge, a chord extending between the leading edge and the trailing edge, and the profiled contour generating a lift when being impacted by an incident airflow. In a cross section of the wind turbine blade perpendicular to a lengthwise direction of the wind turbine blade, a suction side point is defined on the suction side at the trailing edge of the blade, and a pressure side point is defined on the pressure side at the trailing edge of the blade. The suction side point is movable in relation to the pressure side point, and the blade is further provided with a displacement device configured to displace the pressure side point and the suction side point so that a distance between the suction side point and the pressure side point can be varied.
    Type: Application
    Filed: July 1, 2011
    Publication date: January 12, 2012
    Applicant: LM GLASFIBER A/S
    Inventors: Peter BAEK, Peter GRABAU
  • Patent number: 8093483
    Abstract: An interactive water fountain comprising means for providing at least one column or jet (1) of water, means for applying an electrical signal each column or jet (1), detector means (2) for detecting changes in electrical impedance of said water column or jet (1) caused by human interaction therewith and means for activating an electronic device capable of providing an auditory or visual effect upon detection of a change in electrical impedance.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: January 10, 2012
    Inventor: Christopher Dancer
  • Patent number: 8087888
    Abstract: A wind turbine having at least a blade comprising a first component (11) having an aerodynamic profile with a leading edge (5), a trailing edge (7) and suction and pressure sides between the leading edge (5) and the trailing edge (7) and a second component (13) attached to the trailing edge (7) and/or to the leading edge (5) of the first component (11) in at least a part of the blade, in which the second component (13) comprises an upwards and/or downwards deflectable flap (15) that allows changing the flow over the blade and in which the means for deflecting the flap (15) comprise a stiff plate (31) inserted between the first component (11) and the flap (15) and stiff plate actuating means (33, 43).
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: January 3, 2012
    Assignee: Gamesa Innovation & Technology, S.L.
    Inventors: Anders Rebsdorf, Michael Friedrich, Christian Meldgaard
  • Publication number: 20110293420
    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: Application
    Filed: October 14, 2009
    Publication date: December 1, 2011
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventor: Mark Hancock
  • Patent number: 8061986
    Abstract: A wind turbine blade has a suction side surface and a pressure side surface. A plurality of dynamic vortex elements are formed on at least one of the suction side or the pressure side surfaces. The vortex elements are activatable between a first retracted position that is inwardly recessed relative to a neutral plane of the surface on which they are formed and a second extended position that is outwardly protruding relative to the neutral plane of the surface.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: November 22, 2011
    Assignee: General Electric Company
    Inventor: Wei Xiong
  • Patent number: 8052388
    Abstract: Gas turbine engine systems involving mechanically alterable vane throat areas are provided. In this regard, a representative vane for a gas turbine engine includes: a leading edge; a trailing edge; a suction side surface extending between the leading edge and the trailing edge; a cavity having an aperture located in the suction side surface; and a barrel located within the cavity and being moveable therein such that movement of the barrel alters an extent to which the barrel protrudes through the aperture.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: November 8, 2011
    Assignee: United Technologies Corporation
    Inventors: Michael G McCaffrey, Shankar S Magge, Joel H Wagner, Daniel R Sabatino, Joseph Clayton Burge
  • Patent number: 8043056
    Abstract: A self-assembly micro fan includes a body, a plurality of blades and flexible joints, with any one of the blades being connected to the body by one of the flexible joints while each flexible joint is regarded as a pivot to move the blade connected therewith to have an angle relative to a radial direction of the body. Besides, each of the flexible joints has plural link members or at least one link member and extension member to provide variable types of shape of the micro fans, so that the air driving efficiency of the self-assembly micro fan is improved.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: October 25, 2011
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, I-Yu Huang, Yen-Chi Li
  • Patent number: 8043053
    Abstract: A trim tab assembly includes first and second shape memory alloy (SMA) actuators and a trim tab substrate which provide elastic/plastic locking in response to an induced strain actuation.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 25, 2011
    Assignee: Sikorsky Aircraft Corporation
    Inventor: Andreas Bernhard
  • Patent number: 8043045
    Abstract: Actuators utilising shape memory alloy materials are known with regard to gas turbine engines. Such shape memory alloys have been used with respect to deformation provided in vanes and blades as well as nozzle elements in order that variations can be made in engine configuration dependent upon thermal cycling. Unfortunately, pedestals in order to provide spacing between the shape memory alloy and an antagonistic bias has resulted in uneven stress distribution as well as a higher thermal mass for the shape memory alloy. An uneven stress distribution will limit operational life whilst a higher thermal mass will result in slower reaction times. By separation of the shape memory alloy or material from its antagonistic bias through use of a slide element, a reduction in thermal mass is achieved and, more importantly, stress differentiation across the actuator is reduced.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: October 25, 2011
    Assignee: Rolls-Royce plc
    Inventors: Daniel Clark, John R Webster
  • Publication number: 20110255968
    Abstract: An adjustment device to be coupled to an adjustment flap of an aircraft, with an actuator, adjustment kinematics, and a gearing, wherein the adjustment device can be coupled to a controller/monitor for purposes of its actuation. The adjustment device includes a first load sensor, on the input side of the actuator for determining the load arising on the input side due to actuation of the adjustment flap, and a second load sensor, on the output side of the actuator for determining the load arising on the output side due to actuation. The first load sensor and second load sensor are functionally linked with a fault-recognition function for receiving sensor values ascertained by the load sensors, to assign a fault state to the adjustment device. A combination of an adjustment device and a fault recognition function, a fault-tolerant adjustment system, and a method for reconfiguring the adjustment system are also provided.
    Type: Application
    Filed: October 22, 2009
    Publication date: October 20, 2011
    Applicant: AIRBUS OPERATIONS GMBH
    Inventor: Martin Recksiek
  • Patent number: 8038396
    Abstract: A method of manipulating a boundary layer across a wind turbine rotor blade. The method includes coupling at least one vortex generator to the rotor blade. The vortex generator includes at least one sidewall that extends outwardly a radial distance from an outer surface of the rotor blade. The vortex generator is selectively positionable between a first position and a second position. A control system calculates a condition of the boundary layer. The vortex generator is positioned at one of the first position and the second position based on the calculated condition of the boundary layer for moving the vortex generator between the first position and the second position.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: October 18, 2011
    Assignee: General Electric Company
    Inventors: EswaraRao V S J Anjuri, Biju Nanukuttan, Jaikumar Loganathan, Stefan Herr
  • Publication number: 20110236208
    Abstract: A blade (10) of a rotary wing (3), the blade being rigid in twisting and extending from a root (11) to a free end (12), said blade (10) including at least one swept-back segment (23). The blade (10) includes movable twist means (30) fastened to the swept-back segment (23), said blade (10) having actuator means (40) for twisting the blade (10) by varying the angular position of said twist means (30) relative to said swept-back segment (23).
    Type: Application
    Filed: March 17, 2011
    Publication date: September 29, 2011
    Applicant: EUROCOPTER
    Inventors: Jean-Francois Hirsch, Jacques Gaffiero
  • Publication number: 20110229320
    Abstract: The invention further relates to a wind turbine blade comprising at least one device for modifying the aerodynamic surface or shape of the blade. The device is connected to a drive system for operating the device, and the drive system is arranged such that it is drivable by a pressure difference across the drive system. In one embodiment of the invention the wind turbine blade further comprises a number of conduits guiding a flow of air between an outer surface of the wind turbine blade and the drive system. The invention further relates to a method for operating an aerodynamic device for modifying the aerodynamic surface or shape of a wind turbine blade comprising the steps of exploiting a pressure difference across a drive system, inside or around the wind turbine blade in providing operating power for operating said device.
    Type: Application
    Filed: August 28, 2009
    Publication date: September 22, 2011
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Mark Hancock, Nicolas Dudley Barlow, Dick Veldkamp
  • Publication number: 20110223022
    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 movable relative to the outer surface between a recessed position and an actuated position. The spoiler may generally be configured to separate the airflow from the outer surface when the spoiler is in the actuated position. Additionally, the spoiler may generally be linearly displaced between the recessed and actuated positions.
    Type: Application
    Filed: January 28, 2011
    Publication date: September 15, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Jing Wang, Edward Lee McGrath, Thomas Joseph Fischetti
  • Publication number: 20110223021
    Abstract: A wind turbine rotor blade is provided with a mechanism for modifying the camber of the blade. The mechanism acts over a region of the blade surface, the region including a portion of the trailing edge of the blade. Modifying the camber of the blade can increase the lift on the blade and thus the mechanism can be used to optimise blades for operation at high altitude sites where, for example, air density is lower than at sea level. Blades can be produced to the same design and then optimised for operation at differing air densities. The mechanism may be actuated mechanically or hydraulically. In the latter case the mechanism may be operated from the hub of a wind turbine.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 15, 2011
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Ronald Grife, Carsten Hein Westergaard
  • Patent number: 8016544
    Abstract: The vertical windmill includes a rotatable wind wheel column mounted to a base. The column includes a plurality of hollow wheel hubs stacked vertically atop each other. Each wheel hub includes a plurality of radiating mounting arms equidistantly spaced around the axis of the wheel hub such that the arms of an adjacent hub are angularly offset with respect to the other. A plurality of mounting assemblies is disposed on each of the mounting arms for mounting an array of wing blades. Each alternate stacked wheel hub and mounting arms together forms a wind wheel with vertically oriented wing blades mounted between upper and lower spaced arms such that the top wheel is interconnected with the lower wheel at a height less than the height of the blades. Each array of blades may freely rotate or be positively rotated to orient the blades for optimum usage of wind power in rotating the column.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: September 13, 2011
    Inventor: Huy T. Nguyen
  • Publication number: 20110217167
    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: Application
    Filed: August 28, 2009
    Publication date: September 8, 2011
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Mark Hancock, Nicolas Dudley Barlow, Dick Veldkamp
  • Patent number: 8011886
    Abstract: A lift device for a wind turbine blade. The lift device includes a first sidewall and an opposing second sidewall. The lift device is configured to be coupled to the wind turbine blade along a leading edge of the wind turbine blade, and to generate lift when airflow is directed across a surface of the lift device.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: September 6, 2011
    Assignee: General Electric Company
    Inventors: Balaji Subramanian, Kevin Richard Kirtley, Kevin James Standish
  • Patent number: 8011887
    Abstract: A rotor blade assembly is disclosed. The rotor blade assembly includes a main rotor blade, the main rotor blade including a pressure side and a suction side extending between a leading edge and a trailing edge, and an auxiliary rotor blade associated with the main rotor blade, the auxiliary rotor blade including a pressure side and a suction side extending between a leading edge and a trailing edge. The rotor blade assembly further includes a support member connecting the auxiliary rotor blade to the main rotor blade. The auxiliary rotor blade is configured to modify a lift force associated with the rotor blade assembly.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: September 6, 2011
    Assignee: General Electric Company
    Inventors: Murray Fisher, Stefan Herr, David Cole Magnuson
  • Publication number: 20110206509
    Abstract: The present disclosure relates to a wind turbine (10) including: a rotor (18) including a rotatable hub (20) and a plurality of rotor blades (22), each of the plurality of rotor blades (22) being attached to the hub (20); and at least one airfoil body (120) including an aerodynamic profile (156) and an airfoil body root portion (122); wherein the aerodynamic profile (156) is configured for increasing aerodynamic lift of at least an inner portion of a rotor blade (22); and the at least one airfoil body (120) is attached to the hub (20) at the airfoil body root portion (122). In addition thereto, the present disclosure relates to an aerodynamic assembly (118) for a wind turbine (10) and a method of assembling a wind turbine (10).
    Type: Application
    Filed: December 20, 2010
    Publication date: August 25, 2011
    Inventors: Pedro Luis BENITO SANTIAGO, Eugenio Yegro Segovia
  • Patent number: 7989973
    Abstract: Power generation apparatus includes a wing-shaped blade having opposite sides, opposite ends and leading and trailing edges extending between those ends. A lift differential producing device in the blade produces a lift differential at the opposite sides of the blade and that device is switched so that one blade side or the other produces the greater lift. A blade shaft extends along an axis in the blade that is in close parallel relation to the leading edge of the blade and that shaft is fixed to move with the blade. Supports support the blade shaft so that the blade can be positioned in a fluid stream with the leading edge facing upstream and swing about the axis between first and second extreme positions on opposite sides of a neutral position, the blade shaft oscillating with the blade. A coordinating device coordinates the switching of the lift differential producing device with the swinging of the blade so that the switching occurs at the extreme positions of the blade.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: August 2, 2011
    Inventor: Orville J. Birkestrand
  • Patent number: 7980810
    Abstract: A lift-type wind turbine having a substantially vertical rotating shaft and a plurality of substantially vertical blades secured to the shaft. Each blade includes a front portion, a rear portion, and a pivot axis pivotally securing the rear and front portions. The rear portion pivots relative the front portion. The blades additionally include bottom and top edges positioned on each of the front portions. Each bottom edge is arranged substantially equidistant from the shaft proximate a first circumference extending substantially horizontally about the shaft, whereas each top edge is arranged substantially equidistant from the shaft proximate a second circumference extending substantially horizontally about the shaft. The blades are angled relative to the rotating shaft. The blades have an open, drag means position as well as a closed, lift means position, and passively switch between the positions based on wind speed for efficient rotation.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: July 19, 2011
    Assignee: Seabell International Co. Ltd.
    Inventor: Yuji Unno
  • Publication number: 20110164976
    Abstract: A helicopter includes an airframe, and a rotor system mounted to the airframe. The rotor system includes a plurality of rotor blades. Each of the plurality of rotor blades includes a root portion that extends to a tip portion through an airfoil portion. The airfoil portion includes first and second surfaces. An effector is mounted within the airfoil portion of at least one of the plurality of rotor blades. The effector includes a first end portion that extends to a second end portion through an intermediate portion, and a flap arranged at the second end portion. The effector is selectively actuated to shift from a first, stowed, position wherein the flap is positioned within the at least one rotor blade to a second, deployed, position, wherein flap projects through at least one of the first and second surfaces of the at least one rotor blade.
    Type: Application
    Filed: October 22, 2010
    Publication date: July 7, 2011
    Applicant: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Claude G. Matalanis, Brian E. Wake
  • Publication number: 20110142629
    Abstract: A wind turbine blade includes a porous window defined in the suction side of the blade. The porous window is permeable to airflow from within an internal cavity of the blade through the suction side. A deployable cover member is configured with the porous window and is variably positionable from a fully closed position wherein airflow through the porous window is blocked, to a fully open position wherein airflow is established through an entirety of the porous window. An actuating mechanism is disposed within the internal cavity of the blade and is configured with the cover member to move the cover member between the fully closed and fully open positions in response to a control signal.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 16, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: David Samuel Pesetsky
  • Publication number: 20110142628
    Abstract: A wind turbine blade has a suction side surface and a pressure side surface. A plurality of dynamic vortex elements are formed on at least one of the suction side or the pressure side surfaces. The vortex elements are activatable between a first retracted position that is inwardly recessed relative to a neutral plane of the surface on which they are formed and a second extended position that is outwardly protruding relative to the neutral plane of the surface.
    Type: Application
    Filed: June 11, 2010
    Publication date: June 16, 2011
    Applicant: General Electric Company
    Inventor: WEI XIONG
  • Publication number: 20110135472
    Abstract: A trailing edge aerodynamic airfoil of a load-bearing aerodynamic surface of an aircraft of the crocodile type has two airfoil flaps, with each flap being integral in a forward section with a rotational shaft that determines the axis of rotation of the airfoil flap. In a position called the zero setting, the airfoil flaps are essentially joined and form a rear section of the load-bearing surface, and each airfoil flap is movable in translation independently of the other airfoil flap, relative to the load-bearing surface, with each flap being entrained in rotation relative to the load-bearing surface around its axis of rotation by the motion in translation. The ends of the rotational shaft have extensions guided by runners fastened to these ends and acting conjointly with racks fastened to the load-bearing surface.
    Type: Application
    Filed: November 8, 2010
    Publication date: June 9, 2011
    Applicant: AIRBUS OPERATIONS (S.A.S)
    Inventors: Olivier CAZALS, Thierry DRUOT