With Means Moving Working Fluid Deflecting Working Member Part During Operation (e.g., Aileron, Etc.) Patents (Class 416/23)
  • 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
  • Publication number: 20110116927
    Abstract: The invention relates to a wind turbine blade with at least one control surface and an actuator inside the main body of the wind turbine blade for moving the control surface, wherein the actuator comprises a fluidic muscle, a controller and a pump, and wherein the fluidic muscle is adapted to change in length and width when the pressure of the fluid within the fluidic muscle is varied.
    Type: Application
    Filed: December 14, 2010
    Publication date: May 19, 2011
    Applicant: Vestas Wind Systems A/S
    Inventors: Mark Hancock, Wuh Ken Loh, Yun Chong Gabriel Chang
  • Publication number: 20110110777
    Abstract: An active flow control device (10) and a method for affecting a fluid boundary layer of a wind turbine blade (100) are disclosed, as well as a stand-alone module (40) including a plurality of such devices and a wind turbine blade comprising a such devices and/or modules. One or more flow effectors (14) are rotatable back and forth in an oscillating movement (A) in a rotational plane. The flow effectors (14) are also movable in a direction transverse to the rotational plane between a retracted position and an extended position.
    Type: Application
    Filed: December 19, 2008
    Publication date: May 12, 2011
    Applicant: Vestas Wind Systems A/S
    Inventors: Imad Abdallah, Kristian Balschmidt Godsk, Thomas S. Bjertrup Nielsen, Niels Christian M. Nielsen
  • Patent number: 7922450
    Abstract: A wind turbine blade comprises a main blade body and trailing edge section movably connected to the main blade body, and an actuator structure internally within the blade. The actuator interconnects the trailing edge section and the main blade body, and it comprises a stack of a plurality of piezoelectric elements, so that the stack of piezoelectric elements is capable of operating as a linear actuator. The actuator structure is arranged such that it is capable of causing the trailing edge section to move or deform relative to the main blade body in response to aerodynamic loads on the blade. The actuator structure is controllable by a control system applying a voltage to the stack of piezoelectric elements in response to, e.g., detected wind or load characteristics.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 12, 2011
    Assignee: Vestas Wind Systems A/S
    Inventor: Srikanth Narasimalu
  • Publication number: 20110070084
    Abstract: An electric fan can comprise: an oscillating motor configured to drive an upper shell to rotate; a fan motor connected with blades of the electric fan; a control unit mounted with the oscillating motor configured to modify an oscillating angle of the electric fan by changing an interval of positive and negative rotation of the oscillating motor; a control panel connected with the control unit configured to operate the electric fan; and a transformer unit configured to connect supply power to the control unit, the oscillating motor, the control panel, and the fan motor.
    Type: Application
    Filed: September 23, 2009
    Publication date: March 24, 2011
    Inventor: Jing'an Kuang
  • Publication number: 20110052391
    Abstract: The invention relates to an aerodynamic wind propulsion device, particularly for watercraft, comprising an aerodynamic wing being connected to a steering unit located below the aerodynamic wing and coupled to the aerodynamic wing via a plurality of lines, particularly steering lines and/or fixing lines, a tractive cable, wherein a first end of the tractive cable is connected to the steering unit and a second end of the tractive cable is connected to a base platform, the aerodynamic wing having an aerodynamic profile which generates a lifting force in the direction of the traction cable when the air stream direction is about perpendicular to the tractive cable, a plurality of reefing lines located across the aerodynamic wing for increasing and decreasing the lifting force by changing the shape and/or dimension of the aerodynamic wing.
    Type: Application
    Filed: December 4, 2007
    Publication date: March 3, 2011
    Applicant: SkySails GmbH & Co. KG
    Inventors: Bernd Specht, Stefan Wortmann, Hannes Gerdes
  • Patent number: 7896614
    Abstract: A wind turbine includes an electrical stall sensor configured on a pressure surface of at least one turbine blade at a location to detect backflow in a stall condition. The stall sensor includes a flap pivotally configured on the respective pressure surface so as to be moved from a first position towards a second position by backflow over the pressure surface during a stall condition. A sensor circuit responds to movement of the flap between the first and second positions and generates a corresponding electrical signal that indicates the stall condition.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: March 1, 2011
    Assignee: General Electric Company
    Inventor: Murray Fisher
  • Publication number: 20110031760
    Abstract: A wind generator is disclosed in which superconducting ring generators are utilized without the need for a load bearing drive shaft and other mechanical components, decreasing overall weight and enabling the use of variable geometry blades for increased overall efficiency.
    Type: Application
    Filed: October 15, 2010
    Publication date: February 10, 2011
    Applicant: Sonic Blue Aerospace, Inc.
    Inventor: Richard H. Lugg
  • Publication number: 20100310372
    Abstract: A rotor blade for a wind turbine comprises a rotor blade body with a root for connecting the rotor blade to a hub of a wind turbine, a tip, a leading edge and a trailing edge. The blade has a movable part, and motion transmitting means for connecting to an actuator being placed preferably outside the blade body, and transmitting motion from the actuator to the movable part. The motion transmitting means is electrically non-conductive, whereby the risk of lightning stroke accidents is reduced.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 9, 2010
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventor: Srikanth Narasimalu
  • Patent number: 7837141
    Abstract: In an exemplary variable area nozzle, a fixed duct section has an inlet and an outlet oriented approximately perpendicular to the inlet. A controllable nozzle member is disposed adjacent the outlet of the fixed duct section. The controllable nozzle member has an area that is adjustable to maintain a substantially constant nozzle pressure ratio. The controllable nozzle member may include first and second flap doors hinged and pivotable in opposite directions between an open position and a closed position and that also may be hinged and pivotable in a same direction so thrust from gas exiting the nozzle is vectorable. When disposed in rotor tips of an aircraft capable of rotary wing flight and fixed wing flight, the variable area nozzle may maintain a substantially constant nozzle pressure ratio near an optimized nozzle pressure ratio as the aircraft transitions from rotary wing flight to fixed wing flight.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: November 23, 2010
    Assignee: The Boeing Company
    Inventors: Dennis K. Kennedy, Neal W. Muylaert, William J. Bigbee-Hansen
  • Publication number: 20100259046
    Abstract: A wind turbine has a longitudinal airfoil blade that exerts a torque on the generator in response to an impinging air current. A compliant airfoil edge arrangement is disposed along an edge of the airfoil blade for at least a portion of a longitudinal dimension of the airfoil blade. A morphing drive arrangement varies a configuration of the compliant airfoil edge arrangement and consequently the aerodynamic characteristics of the airfoil blade. A drive arrangement applies actuation forces to the upper and lower compliant surfaces via the upper and lower actuation elements. The compliant airfoil edge is arranged as a trailing edge of the airfoil blade.
    Type: Application
    Filed: November 6, 2008
    Publication date: October 14, 2010
    Inventors: Sridhar Kota, Gregory F. Ervin, Dragan Maric, James D. Ervin, Paul W. Keberly
  • Publication number: 20100232960
    Abstract: There is provided a turbine having rotating blade surfaces that adjust their geometry based on incident fluid flow. In one aspect, there is provided a turbine having a least one pair of blades rotatably connected such that their geometry is adjusted based on incident fluid flow. In another aspect, there is provided, a turbine having at least one pair of blades connected such that they self-orient themselves to a neutral position under their own weight. In yet another aspect, there is provided, a control surface for a turbine blade which prevents meta-stable stall of the turbine blade in an fluid stream.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 16, 2010
    Inventor: Christopher Larsen
  • Publication number: 20100215493
    Abstract: A wind turbine blade includes a blade body and lift-regulating mechanism adapted for movement in relation to the blade body by at least one actuation mechanism controlled by an actuation controller. The actuation controller controls a setting of the lift-regulating mechanism based on an input from a sensor, and the sensor is a force sensor adapted for sensing a force from a wind flow acting on the lift-regulating mechanism, whereby a wind turbine blade with fast-responding lift-regulating mechanism is provided.
    Type: Application
    Filed: April 29, 2010
    Publication date: August 26, 2010
    Inventors: Imad Abdallah, Jonas Romblad, Carsten Hein Westergaard, Chee Kang Lim
  • Patent number: 7762770
    Abstract: A helicopter rotor blade that has a blade body and a control flap secured to the blade body. The rotor blade has a first primary mover capable of generating a first linear motion that is sufficient to generate a high amplitude, low frequency motion of the control flap; and a second primary mover capable of generating a second linear motion that is sufficient to generate a small amplitude, high frequency motion of the control flap. Further, the rotor blade has a coupling transmission for combining the first linear motion with the second linear motion that generates a cumulative linear motion; and a second transmission device that causes the cumulative linear motion to rotate the control flap.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: July 27, 2010
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Fanping Sun, Zaffir A. Chaudhry, Jimmy Lih-Min Yeh, Michael G. O'Callaghan, Ulf J. Jonsson, Brian E. Wake, Robert H. Dold
  • Patent number: 7677868
    Abstract: A self-lubricated actuator for a rotor blade flap of a helicopter having a housing; a motor having a shaft disposed in a bearing is provided. The actuator further has an output rod and a mechanism operatively associated with the motor and the output rod to transmit movement from the motor to the output rod. The housing includes a lubrication medium capable of substantially immersing the bearing, the motor shaft and the mechanism during operation.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 16, 2010
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Zaffir Chaudhry, Andrew John Collins, Ulf J Jonsson, Fanping Sun, Brian E Wake, Michael G O'Callaghan, Jimmy Lin-Min Yeh
  • Publication number: 20100014970
    Abstract: A blade (10) for a wind turbine rotor with a hub is described. The blade extends in a longitudinal direction along a longitudinal axis and having a root area (16) closest to the hub and a tip region furthest away from the hub. The blade (10) along at least a portion of the longitudinal direction of the blade has an envelope, which defines an airfoil profile having, in normal operation, a pressure side (20) and a suction side (19), and further having a leading edge (18) and a trailing edge (17), which edges define an airfoil chord line extending between them. The blade (10) comprises adjustable lift-regulating means extending in the longitudinal direction of the blade (10), and activating means by means of which the lift-regulating means can be adjusted and thus alter the aerodynamic properties of the blade (10).
    Type: Application
    Filed: January 4, 2008
    Publication date: January 21, 2010
    Applicant: LM GLASFIBER A/S
    Inventors: Stefano Bove, Peter Grabau
  • Patent number: 7644887
    Abstract: A yaw control system and a method of controlling yaw for an aircraft are provided. The yaw control system includes a first wing set and a second wing set which are rotatable in opposite directions. Each of the wing sets includes at least two wings each including a pivotable flap forming a trailing edge of its respective wing. A flap control assembly controls the pivotable flaps of the first wing set and of the second wing set such that when the pivotable flaps of the first wing set are pivoted in a first direction by a first set angle, the pivotable flaps of the second wing set are simultaneously pivoted by a second set angle in an opposite direction, thereby providing yaw control for the aircraft.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: January 12, 2010
    Inventors: Edward D. Johnson, Howard C. Kress, Jr.
  • Patent number: 7632068
    Abstract: The present invention relates to a design concept by which the power, loads and/or stability of a wind turbine may be controlled by typically fast variation of the geometry of the blades using active geometry control (e.g. smart materials or by embedded mechanical actuators), or using passive geometry control (e.g. changes arising from loading and/or deformation of the blade) or by a combination of the two methods. The invention relates in particular to a wind turbine blade, a wind turbine and a method of controlling a wind turbine.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: December 15, 2009
    Assignee: Technical University of Denmark
    Inventors: Dan Christian Bak, Thomas Buhl, Peter Fuglsang, Helge Aagaard Madsen, Flemming Rasmussen
  • Publication number: 20090285682
    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: Application
    Filed: May 12, 2009
    Publication date: November 19, 2009
    Applicant: FRONTIER WIND, LLC
    Inventors: Jonathon P. Baker, Kevin Lee Jackson, Edward A. Mayda, Cornelis P. van Dam
  • Publication number: 20090269198
    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: Application
    Filed: December 8, 2006
    Publication date: October 29, 2009
    Applicant: Eurocopter Deutschland GmbH
    Inventors: Boris Grohmann, Christoph Maucher, Andree Altmikus, Stephan Mangelsdorf
  • Publication number: 20090220339
    Abstract: A wind deflector for a wind turbine has a vertical wind deflecting surface movable in a circular path about the wind turbine for facing a prevailing wind direction.
    Type: Application
    Filed: December 17, 2008
    Publication date: September 3, 2009
    Applicant: HOPEWELL WIND POWER LIMITED
    Inventors: Gordon Y. S. Wu, Thomas J. Wu, Carol Ann Wu
  • Patent number: 7578654
    Abstract: A rotorcraft rotor blade (1) includes at least one tiltable trailing-edge flap (5), the flap (5) being suitable for pivoting about a virtual hinge axis (Y?) extending substantially along the span of the blade (1) and of the flap (5). The blade (1) is remarkable in that it is provided with at least one main ball joint (30) provided with an inner cage (32) together with a first pin (31) and an outer cage (33), the front portion (33?) of the outer cage (33) of the main ball joint (30) being connected to a linear actuator (10, 10?) arranged in the blade (1) and serving to pivot the flap (5), the first pin (31) of the main ball joint (30) being substantially perpendicular to the virtual hinge axis (Y?) about which the flap (5) pivots.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: August 25, 2009
    Assignee: Eurocopter
    Inventors: François Lorin De La Grandmaison, Michel Morant, Olivier Ardesi, Jacques Gaffiero
  • Publication number: 20090191057
    Abstract: A wind energy to electrical power conversion device provides a protected multiple turbine mechanism axially aligned to convert kinetic energy of air movement, i.e. wind (or other moving fluid such as water), into rotational mechanical power to directly create electrical energy by the reaction of the wind with the turbine. The present wind energy to electrical power conversion device may either be configured as a vertical axis wind turbine (VAWT) or horizontal axis wind turbine (HAWT). An associated wind gathering sail automatically repositions itself to maximize wind intake and to collect and concentrate the wind prior to converting the wind into energy via the axially aligned multi-turbine mechanism into electrical energy. The remaining wind is released via a leeward-facing exhaust. The present axially aligned multi-turbine mechanism avoids interference by birds and other outside objects due to its inherent structural visibility.
    Type: Application
    Filed: January 24, 2009
    Publication date: July 30, 2009
    Inventor: Roger C. Knutson
  • Publication number: 20090184521
    Abstract: This invention relates to a novel twin wind turbine power system. More particularly, this invention pertains to a twin wind turbine power system which has adjustable width blades, adjustable width wind deflectors and a telescoping erection capability. A twin wind turbine electrical power generating system comprising: (a) a first rotatable wind turbine with vertical radially extending blades around its axis; (b) a second rotatable wind turbine deployed parallel to the first turbine with vertical radially extending blades around its axis; (c) a vertical windshield positioned windwardly between the first and second wind turbines; (d) a wind direction member associated with the first and second wind turbines and directing the first and second wind turbines and windshield to face windward; (e) a rotational support upon which items (a), (b), (c) and (d) are mounted; (f) an alternator connected to the first and second wind turbines and generating electricity as the first and second wind turbines rotate.
    Type: Application
    Filed: January 17, 2008
    Publication date: July 23, 2009
    Inventor: Wun C. Chong
  • Publication number: 20090162199
    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: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Inventor: Andreas Bernhard
  • Publication number: 20090148285
    Abstract: A multi-section blade for a wind turbine comprising at least one non-pitchable section and at least one pitchable section is provided. The non-pitchable section is configured to be fixed to a hub of the wind turbine. The pitchable section is configured to be rotated about a pitch axis which is substantially parallel to the span of the multi-section blade. A pitch bearing and a pitch motor are located within the blade and near the non-pitchable section and pitchable section interface.
    Type: Application
    Filed: December 6, 2007
    Publication date: June 11, 2009
    Inventor: Hartmut A. Scholte-Wassink
  • Publication number: 20090126612
    Abstract: An undershot waterwheel is described. The waterwheel has a rotational axis and paddles rotatable about the rotational axis. At least one paddle comprises a blade that is curved when viewed parallel to the rotational axis. Optionally, the waterwheel may be mounted on a watercraft.
    Type: Application
    Filed: November 21, 2007
    Publication date: May 21, 2009
    Inventors: Simon Williams, Anthony M. Stewart
  • Patent number: 7509737
    Abstract: A method of manufacturing a fan blade includes providing a fan blade blank including opposed major faces, opposed inner and outer extremities, and opposed first and second sides defining opposed first and second edges, respectively. The method further specifies cutting the fan blade blank asunder into first and second parts along a cut line extending from the inner extremity of the fan blade blank to the outer extremity of the fan blade blank inboard of one of the first and second edges forming a first cut edge of one of the first and second parts and a second cut edge of the other of the first and second parts, chamfering one of the first and second cut edges forming a chamfered one of the first and second cut edges, and affixing the chamfered one of the first and second cut edges to the other of the first and second cut edges forming a fan blade consisting of the first part affixed to the second part, the first part being angled relative to the second part.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: March 31, 2009
    Assignee: Air Cool Industrial Co. Ltd.
    Inventor: Jen-Lung David Tai
  • Publication number: 20090074573
    Abstract: A wind turbine having at least a blade comprising a first component (11) having an aerodynamic profile with a leading edge, a trailing edge and suction and pressure sides between the leading edge and the trailing edge, and a second component (13), attached to the trailing edge and/or to the leading edge of the first component (11) in at least a part of the blade, comprising one or several upwards and/or downwards deflectable flaps (15, 15?) that allow changing the flow over the blade, in which the means for deflecting each of said flaps (15, 15?) comprise an actuating force or torque provided by scaling devices (21) connected to a predetermined location (17) in the outer surface of the blade, through a duct (19), so that the changes in the wind pressure at said location (17) can be scaled to said actuating force or torque.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 19, 2009
    Inventors: Anders Rebsdorf, Christian Medgaard
  • Publication number: 20090053060
    Abstract: Wind turbines or generators are provided with a larger operating range, and made more efficient through the use of controlling the Bernoulli Effect on air foil blades. The control is effected through the use of rotating bands arranged over at least part of the surface of the blades. The direction of the moving bands is reversible so as to increase or decrease the lift provided by the Bernoulli Effect. In the present invention, greater torque can be developed on the wind generator without increasing the wind speed.
    Type: Application
    Filed: June 5, 2008
    Publication date: February 26, 2009
    Inventor: Theodore M. Garver
  • Publication number: 20090028705
    Abstract: A wind turbine having at least a blade comprising a first component (11) having an aerodynamic profile with a leading edge, a trailing edge and suction and pressure sides between the leading edge and the trailing edge, and a second component (13), attached to the trailing edge and/or to the leading edge of the first component (11) in at least a part of the blade, comprising an upwards and/or downwards deflectable flap (15) that allows changing the flow over the blade, in which the means for deflecting the flap (15) are fluid inflatable means (23) placed in a flap inner chamber (25) close to the first component (11) and in which the wind turbine comprises means for controlling said inflatable means (23) depending on the wind situation and/or the blade loads.
    Type: Application
    Filed: June 16, 2008
    Publication date: January 29, 2009
    Inventors: Christian Meldgaard, Michael Friedrich
  • Publication number: 20090028704
    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: Application
    Filed: June 24, 2008
    Publication date: January 29, 2009
    Inventors: ANDERS REBSDORF, Michael Friedrich, Christian Meldgaard
  • Publication number: 20090001724
    Abstract: Provided are an apparatus and method for controlling a vertical axis wind power generation system that controls the rotation of guide vanes according to wind direction and speed, appropriately controls a direction of wind passing over an impeller, thereby maintaining a rotational speed generating the maximum power, maintains output power of a generator as rated power according to wind direction and speed, and stops the generator when a low or high wind speed outside a setting value range, an error in a structure, a fault in a braking unit, and/or a fault in guide vanes is detected.
    Type: Application
    Filed: June 24, 2008
    Publication date: January 1, 2009
    Applicant: KR CO., LTD.
    Inventors: Seung Bae LEE, Jeoung Ik JANG
  • Patent number: 7467921
    Abstract: To control vortices originating at the tips of a rotor's blades rotating through the air at a revolution frequency f, separation control device(s) are actuated to periodically introduce perturbations into the airflow moving over the blades. The periodic introduction of perturbations is controlled in accordance with a periodic modulating frequency of introduction f0 while the frequency of the perturbations so-introduced is designated as fe. Vortex control is achieved when the periodic modulating frequency of introduction f0 satisfies the relationship nf?f0?fe where n is the number of blades.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: December 23, 2008
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: David Greenblatt
  • Patent number: 7461812
    Abstract: A control system for a rotorcraft is disclosed. The control system includes a stepped mixing linkage, such that a selected amount of right-left lateral cyclic output is generated for certain amounts of forward-aft cyclic input. The stepped mixing linkage includes two supporting links and a floating link pivotally coupled between the two supporting links. The ratio of the lengths of the two supporting links to the length of the floating link is small, thereby generating a selected lateral sinusoidal output, a selected rotation of the sinusoidal output, and a selected ramped output in response to each forward-aft pilot input command.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: December 9, 2008
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Carlos A. Fenny, Duane Hicks
  • Patent number: 7458777
    Abstract: A wind turbine includes a rotor assembly having at least one blade with a blade body defining a leading edge and a trailing edge and adapted for movement in response to a wind flow over the body to produce electricity. A rigid acoustic flap extends outward from the trailing edge, and a distal end of the acoustic flap is substantially smooth and continuous. The flap reduces acoustic noise generated by the blade in use.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: December 2, 2008
    Assignee: General Electric Company
    Inventor: Stefan Herr
  • Publication number: 20080286101
    Abstract: A ceiling mounted fan comprising: a first housing portion; a second housing portion; and a motive unit operably coupled to the second housing portion, wherein the motive unit is configured to adjust a position of the second housing portion from a position proximate to the first housing portion to a position distal to the first housing portion.
    Type: Application
    Filed: May 19, 2008
    Publication date: November 20, 2008
    Applicant: SWISS MODULE GROUP, LLC
    Inventors: Mark Gajewski, William Patrick Conley, Rodger Dale Thomason
  • Publication number: 20080226448
    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: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Inventors: Andree Altmikus, Rupert Pfaller, Bernhard Enenkl
  • Patent number: 7419356
    Abstract: The invention relates to a method and a device for regulating the airflow around a blade of a windmill. The device comprise a spoiler, which is provided with a cavity. The spoiler is mounted to a surface of the blade in connection with an another flow regulating unit, and the spoiler can change the airflow around the blade by assuming different forms. When the spoiler is in a deactivated form no particular changes of the airflow takes place, as the spoiler runs continually and follows the contour of the blade. When the spoiler is in an activated form the airflow, however, is changed in that the spoiler no longer follows the contours of the blade and creates a discontinuity or at least changes the profile of the blade in such way that the airflow conditions are changed. In particular the airflow conditions can be changed so the effect of the second flow regulating unit completely or partly is eliminated.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 2, 2008
    Assignee: Bonus Energy A/S
    Inventor: Henrik Stiesdal
  • Publication number: 20080157528
    Abstract: A wind-energy power machine and it's energy-storage generation system and wind-energy power generation system relate to a field of wind-energy power, generating technology and generating device. The wind-energy power machine is composed of a central rotor, a plurality sets of frames and at least a set of wind-pressure pushing mechanism provided within each set of frame. The central rotor vertically rotatablely mounted within a mounting frame in a special high-story frame structure with wind collecting wall is formed to a large scale power and generating system by means of combining with vertical or horizontal integrated system, or both systems in series and in parallel.
    Type: Application
    Filed: April 25, 2005
    Publication date: July 3, 2008
    Inventors: Ying Wang, Qingwan Lin
  • Publication number: 20080145221
    Abstract: A helicopter rotor blade that has a blade body and a control flap secured to the blade body. The rotor blade has a first primary mover capable of generating a first linear motion that is sufficient to generate a high amplitude, low frequency motion of the control flap; and a second primary mover capable of generating a second linear motion that is sufficient to generate a small amplitude, high frequency motion of the control flap. Further, the rotor blade has a coupling transmission for combining the first linear motion with the second linear motion that generates a cumulative linear motion; and a second transmission device that causes the cumulative linear motion to rotate the control flap.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Fanping Sun, Zaffir A. Chaudhry, Jimmy Lih-Min Yeh, Michael G. O'Callaghan, Ulf J. Jonsson, Brian E. Wake, Robert H. Dold
  • Publication number: 20080145219
    Abstract: An airborne mobile platform generally includes a plurality of rotating rotor blades operating in an airflow that forms a boundary layer on each of the rotor blades. At least one of the rotor blades includes a section that encounters the airflow that includes an unsteady subsonic airflow having at least a varying angle of attack. At least one of the rotor blades also includes one or more vortex generators on the at least one of the rotor blades that generate a vortex that interacts with the boundary layer to at least delay an onset of separation of the boundary layer, to increase a value of an unsteady maximum lift coefficient and to reduce a value of an unsteady pitching moment coefficient for the section.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 19, 2008
    Applicant: The Boeing Company
    Inventors: Michael A. McVeigh, Robert F. Maciolek
  • Publication number: 20080145220
    Abstract: A helicopter rotor blade having a blade body that defines a confined space and a control flap that is secured to the blade body that moves through a range of motion. An electric machine is secured inside of the rotor blade body that rotates a motor shaft. A transmission device is secured to the motor shaft and the control flap that transfers rotary motion of the motor shaft to the control flap to generate movement of the control flap through its range of motion. The transmission device remains substantially within the confined space throughout the range of motion.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Jimmy Lih-Min Yeh, Fanping Sun, Zaffir A. Chaudhry, Robert H. Dold, Ulf J. Jonsson, Brian E. Wake, Michael G. O'Callaghan
  • Publication number: 20080138203
    Abstract: A self-lubricated actuator for a rotor blade flap of a helicopter having a housing; a motor having a shaft disposed in a bearing is provided. The actuator further has an output rod and a mechanism operatively associated with the motor and the output rod to transmit movement from the motor to the output rod. The housing includes a lubrication medium capable of substantially immersing the bearing, the motor shaft and the mechanism during operation.
    Type: Application
    Filed: December 7, 2006
    Publication date: June 12, 2008
    Applicant: Sikorsky Aircraft Corporation
    Inventors: Andrew John Collins, Zaffir Chaudhry, Ulf J Jonsson, Fanping Sun, Brian E. Wake, Michael G. O'Callaghan, Jimmy Lin-Min Yeh
  • Publication number: 20080131278
    Abstract: A turbine blade with improved tip cooling includes an airfoil having a tip cap and a tip wall extending outwardly from the tip cap. A recessed portion of the tip wall forms a tip shelf. At least one tip shelf hole extends through the tip shelf in flow communication with an internal airfoil cooling circuit. At least one tip wall opening extends through the recessed portion of the tip wall radially outward of the tip shelf in flow communication with the internal cooling circuit. The recessed tip wall portion may be tapered from a wider base to a minimum thickness. In a cooling method, cooling air channeled through the tip wall openings joins and mixes with a stream of hot combustion gases downstream of where cooling air channeled through the tip shelf openings joins and mixes with the stream of hot gasses to enhance convection cooling of the blade tip.
    Type: Application
    Filed: November 30, 2006
    Publication date: June 5, 2008
    Inventors: Victor Hugo Silva Correia, Robert Francis Manning, Bhanu Mahasamudram Reddy
  • Publication number: 20080103611
    Abstract: A method for optimization of operating parameters of a wind energy installation defines an upper and a lower interval limit value for a parameter to be optimized. The method includes carrying out a cycle with alternate operations of the wind energy installation with the interval limit values, with a data record in each case being produced with a target variable over a variable number of repetitions. The data records relating to the interval limit values are evaluated to form a quality measure, and the interval limit value with the poorer quality measure is identified. Then, at least the interval limit value with the poorer quality measure is replaced by shifting through a step value ? in a direction of another interval limit value. The cycle is then repeated.
    Type: Application
    Filed: November 22, 2005
    Publication date: May 1, 2008
    Applicant: REpower Systems AG
    Inventor: Jens Altemark
  • Patent number: 7293959
    Abstract: Wind turbine blade (10) including adjustable lift-regulating means (12, 13, 15, 17, 19, 21) arranged on or at the surface of the wind turbine blade (10), said lift-regulating means being provided with activating means by means of which they can be adjusted and thus alter the aerodynamic properties of the blade (10). The lift-regulating means (12, 13, 15, 17, 19, 21) and the activating means are adapted and arranged such that by activation of the activating means, the lift can be reduced in a zone extending in the longitudinal direction of the blade (10) from a first position adjacent the blade tip (14) to a second position between the position and the blade root (16) and this second position is variable in the longitudinal direction of the blade (10) by adjusting activate means. The lift-regulating means are formed of at least one flexible flap (12, 13, 15, 17, 19, 21).
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: November 13, 2007
    Assignee: LM Glasfibeer A/S
    Inventors: Bernt Ebbe Pedersen, Jørgen Dahl Vestergaard, Peter Grabau, Ib Frydendal
  • Patent number: 7204674
    Abstract: A rotor for a wind power installation having at least one rotor blade. The smaller the surface area on which the wind acts, that is to say in particular the rotor blade area, the correspondingly lower is the load level for which installation has to be designed and the correspondingly more easily can the rotor blade be transported. On the other hand the size of the wind power installation entails minimum dimensions which are unavoidable for operation and below which the installation dimensions may not fall. In order to provide a rotor blade which on the one hand has the aerodynamically required surface area but which on the other hand is so designed that the surface area of the rotor blade and therewith the depth thereof can be reduced in predetermined situations a part of the surface of the rotor blade is deformmable or movable.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 17, 2007
    Inventor: Aloys Wobben
  • Patent number: 7101237
    Abstract: The stern end of a seawater hull has a rotor hub with propeller blades thereon. The rotor hub is rotated for propulsion of the hull by means of a propeller shaft extending through a sealed compartment within the hull. Such sealed compartment and an electrically powered control system is disposed within the hull to automatically adjust angular deflection of deformable tip portions of the propeller blades by means of blade embedded actuators, in response to varying input signals which respectively reflect changes in seawater conditions such as temperature and strain imposed on the propeller blades during propelling rotation of the rotor hub.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: September 5, 2006
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Charles M. Dai
  • Patent number: 7045702
    Abstract: A solar-paneled windmill is provided having aerodynamic fan blades provided with solar panels. The windmill produces electricity using wind energy and solar energy. In another embodiment, magnets are provided to the solar-paneled windmill fan blades to generate magnetic fields to increase the amount of electrical energy produced.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: May 16, 2006
    Inventor: Ravindra Kashyap