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| Number | Title | Issue Date |
| 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 pressure and suction sides. The rotor blade may also include a base and at ... | 05/01/2012 |
| 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 including an upper skin and a lower skin encase the profile core. A rever... | 04/24/2012 |
| 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 effective rotor blade profile, the profile including a nose area and ... | 04/10/2012 |
| 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 leading edge (5) and the trailing edge (7 | 01/03/2012 |
| 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 vortex elements are activatable between a first retracted position t... | 11/22/2011 |
| 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; a suction side surface extending between the leading edge and the tr... | 11/08/2011 |
| 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 is regarded as a pivot to move the blade connected therewith to have ... | 10/25/2011 |
| 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 trailing edge, and an auxiliary rotor blade associated with the main r... | 09/06/2011 |
| 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 leading edge of the wind turbine blade, and to generate lift when airflow... | 09/06/2011 |
| 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 interconnects the trailing edge section and the main blade body, and it comprises... | 04/12/2011 |
| 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 to generate a high amplitude, low frequency motion of the control fl... | 07/27/2010 |
| 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 operatively associated with the motor and the output rod to transmit ... | 03/16/2010 |
| 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 active geometry control (e.g. smart materials or by embedded mechanical a... | 12/15/2009 |
| 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 of the blade (1) and of the flap (5 | 08/25/2009 |
| 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 produce electricity. A rigid acoustic flap extends outward from the ... | 12/02/2008 |
| 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 surface of the blade in connection with an another flow regulating uni... | 09/02/2008 |
| 7357358 | Aircraft leading edge device systems and corresponding sizing methods Aircraft leading edge device systems and methods for sizing such systems are disclosed. In one embodiment, a spanwise lift coefficient distribution for an airfoil corresponding to at least one design condition and at least one aircraft angle of attack is identified,... | 04/15/2008 |
| 7334755 | Tandem rotor wing and tandem fixed wing aircraft Aircraft comprising an airframe having a fuselage, at least two fixed wing sets. A first fixed wing set of the fixed wing sets is positioned closer to a forward end of the fuselage than a second fixed wing set and the second fixed wing set is positioned closer to th... | 02/26/2008 |
| 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 with activating means by means of which they can ... | 11/13/2007 |
| 7229255 | Fan with driving gear A ceiling fan suspended from a mounting rod and comprising a transverse support. A pair of hanging fans are distally mounted on the transverse support. A motor fixed to the mounting rod and spaced radially therefrom drives a gyro gear about an axis parallel to and s... | 06/12/2007 |
| 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 lower is the load level for which installation has to be designed and t... | 04/17/2007 |
| 7198000 | Shock limited hydrofoil system A hydrofoil craft includes a hull having a longitudinal axis, a pylon secured to and extending beneath the hull and a lifting foil secured to the pylon. The lifting foil has an upper surface and a lower surface. The upper surface of the lifting foil is substantially... | 04/03/2007 |
| 7186083 | Wind energy conversion device A wind energy conversion device includes a propeller in which each of the propeller blades includes a proximal (radially inward) non-airfoil mounting section, a medial section and a distal tip section mounted to pivot relative to the medial section about a pitch axi... | 03/06/2007 |
| 7183680 | Fan with driving gear A ceiling fan suspended from a mounting rod and comprising a transverse support. A pair of hanging fans are distally mounted on the transverse support. A motor fixed to the mounting rod and spaced radially therefrom drives a gyro gear about an axis parallel to and s... | 02/27/2007 |
| 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 compartment within the hull. Such sealed compartment and an electrically powe... | 09/05/2006 |
| 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 are provided to the solar-paneled windmill fan blades to generate magn... | 05/16/2006 |
| 7047167 | Blade shape designing method, program thereof and information medium having the program recorded thereon An initial set of individuals having design parameters of a blade as a gene, is determined at random (S12). Next, an analysis using Navier-Stokes equations is performed. On the basis of the analysis result, ranking (evaluation) of respective individuals are p... | 05/16/2006 |
| 7023105 | Atmospheric density-dependent power adjustment for wind turbines The present invention concerns a wind power installation having a control apparatus for operational management of the wind power installation and a method of controlling a wind power installation having a control apparatus for operational management. In order to tak... | 04/04/2006 |
| 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 wind power. Each windmill blade includes blade bodies mounted to the ro... | 01/10/2006 |
| 6972498 | Variable diameter wind turbine rotor blades A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can ... | 12/06/2005 |
| 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 one laminate having at least two layers of materia... | 11/22/2005 |
| 6955215 | Hybrid cooling system and method for cooling electronic devices A hybrid cooling system for cooling electronic devices includes a heat generating electronic device and an endless metal belt in sliding contact with a surface of the device for removing heat by conduction. The system also includes a fan or jet and an airfoil with a... | 10/18/2005 |
| 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 and the use of thick resilient member isolates the trim tab from norm... | 09/13/2005 |
| 6940185 | Advanced aerodynamic control system for a high output wind turbine An advanced aerodynamic control system for a wind turbine including a drive shaft and blade. The control system includes an air control system coupled to a duct that extends from a first end toward a second end of the blade. A slot extends along a portion of a surfa... | 09/06/2005 |
| 6940186 | Wind turbine having sensor elements mounted on rotor blades The invention relates to a wind power plant with a tower, a rotor having at least one rotor blade being substantially radially distant with respect to a rotor axis and being rotatably supported with respect to a substantially horizontal rotation axis in a portion at... | 09/06/2005 |
| 6902370 | Telescoping wind turbine blade A wind turbine blade made of a fixed blade section with an integral mounting flange for attachment to a wind turbine hub. A moveable blade section is attached to the fixed blade section and is free to move in a longitudinal direction relative to the fixed blade sect... | 06/07/2005 |
| 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 the flight controller is adapted in such a manner that the structural r... | 11/09/2004 |
| 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 of the hub, disposed in the blade proximate the movable edge section,... | 08/17/2004 |
| 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 coupler assembly support the slat therebetween. Centrifugal for... | 12/23/2003 |
| 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 on an axis of rotation and is linked to a control rod of a ... | 12/16/2003 |
