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8182231 |
Wind turbine with slender blade
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...
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8167554 |
Actuatable surface features for wind turbine rotor blades
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...
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8162607 |
Rotor blade for a rotary wing aircraft
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...
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8157533 |
Wind turbine blade with variable aerodynamic profile
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...
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8152465 |
Rotor blade for a rotor airplane
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...
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8133023 |
Wind turbine with variable area propeller blades
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...
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8093483 |
Interactive water fountain and a method of interacting with water to provide an auditory or visual effect
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...
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8087888 |
Wind turbine blade with cambering flaps
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...
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8061986 |
Wind turbine blades with controllable aerodynamic vortex elements
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...
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8052388 |
Gas turbine engine systems involving mechanically alterable vane throat areas
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;...
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8043045 |
Actuator
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...
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8043056 |
Self-assembly micro fan
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...
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8043053 |
Self locking trim tab
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.
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8038396 |
Vortex generator assembly for use with a wind turbine rotor blade and method for assembling a wind turbine rotor blade
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...
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8016544 |
Vertical windmill
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...
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8011886 |
Method and apparatus for increasing lift on wind turbine blade
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...
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8011887 |
Rotor blade assembly
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...
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7989973 |
Fluid-responsive oscillation power generation method and apparatus
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...
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7980810 |
Vertical axis windmill and wind turbine system for generating electricity from wind energy
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,...
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7922450 |
Wind turbine blade comprising a trailing edge flap and a piezoelectric actuator
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...
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7896614 |
Wind turbine blade with integrated stall sensor and associated method of detecting stall of a wind turbine blade
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...
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7837141 |
Reaction drive rotor/wing variable area nozzle
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...
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7762770 |
Hybrid actuator for helicopter rotor blade control flaps
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...
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7677868 |
Self-lubricated actuator for on-blade rotor control
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...
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7644887 |
Yaw control system and method
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....
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7632068 |
Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control
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...
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7578654 |
Rotorcraft blade provided with a tiltable flap
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 o...
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7509737 |
Fan blade manufacturing methods
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...
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7467921 |
Vortex control for rotor blade devices
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...
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7461812 |
Rotorcraft control system with stepped mixing linkage
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...
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7458777 |
Wind turbine rotor assembly and blade having acoustic flap
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...
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7419356 |
Method for regulating a windmill, and an apparatus for the use of said method
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...
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7293959 |
Wind turbine blade with lift-regulating means
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...
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7204674 |
Rotor blade for a wind power installation
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...
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7101237 |
Propellor blade adjustment system for propulsion through fluid environments under changing conditions
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...
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7045702 |
Solar-paneled windmill
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...
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6984110 |
Windmill blade and apparatus for generating power using the blade
Disclosed is a wind power generating apparatus in which windmill blades are mounted in a multi-stage fashion to a rotating shaft while being spaced apart from one another to efficiently generate...
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6966758 |
Wind turbine rotor blade comprising one or more means secured to the blade for changing the profile thereof depending on the atmospheric temperature
A wind turbine rotor blade (10) comprising one or more means (4) secured to the blade (10) for changing the profile thereof depending on the atmospheric temperature. The means comprises at least...
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6942455 |
Strain isolated trim tab
A rotor blade assembly system includes a trim tab assembly which utilizes relatively thick resilient members bonded between a trim tab and the two trim tab doublers. Spanwise segmenting of the tab...
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6816823 |
Process for designing flight controllers
Process for designing flight controllers, in which first for the rigid airplane and then for the elastic airplane the damping and the phase delay for each excitation frequency is determined, and...
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6776580 |
Variable edge rotor blade
A variable edge rotor blade adapted to be driven by the rotor hub includes an airfoil section; a movable edge section coupled to the airfoil section, and an actuator device operating independently...
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6666648 |
Directional elastomeric coupler
An elastomeric coupler assembly having a helical elastomeric bearing movably supports an active slat relative to a main element. An inner elastomeric coupler assembly and an outer elastomeric...
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6663345 |
Rotor blade with control flaps
Rotor blade for a helicopter having an aerodynamic control flap, particularly a camber flap, is integrated essentially in the contour of the blade profile. The camber flap is swivellably arranged...
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6648599 |
Method and control arrangement for adjusting a flap that is pivotally supported in a rotor blade of a helicopter
A force transmitting linkage connects a piezoelectric actuator to a flap that is pivotably connected to a helicopter rotor blade. In a flap actuation control arrangement and method, a force...
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6644919 |
Rotor blade with flap and flap drive
A rotor blade arrangement includes a rotor blade with a hollow blade chamber therein, and a flap module removably arranged and secured in the blade chamber. The flap module includes a module...
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6544000 |
Magnetostrictive adjustment of propeller blade
A magnetostrictive rod subject to a magnetic field generated by an electrical activating coil within a pocket of a propeller blade is held in abutment with the body of the blade to effect its...
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6481964 |
Rotor blade having a control flap
A rotor blade for a helicopter has a blade root for a fastening in the area of the rotor mast and a radially exterior blade tip. An aerodynamic control flap is integrated essentially in the contour...
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6478541 |
Tapered/segmented flaps for rotor blade-vortex interaction (BVI) noise and vibration reduction
An active control device for reducing blade-vortex interactions (BVI) noise generated by a rotorcraft, such as a helicopter, comprises a segmented trailing edge flap located near the tip of each of...
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6474945 |
Flap hinge mechanism, method for manufacturing the same, and flap hinge apparatus
A flap hinge mechanism has a blade-secured portion secured to blade, a flap-secured portion secured to flap, and a coupling portion which couples the blade-secured portion and the flap-secured...
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6474184 |
Tilt and swivel positioning device
A tilt and swivel positioning device for positioning a servo flap in a rotor blade. The device contains a tilt element and a bearing element. The tilt element is swivellably attached to the bearing...
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