Matches 1 - 50 out of 119 1 2 3 >


Match Document Document Title
US20130309091 OIL SUPPLY SYSTEM FOR A PROPELLER TURBINE ENGINE  
An oil supply system for a propeller turbine engine including a propeller, a propeller gearbox connected to the propeller and a propeller adjusting device for altering the pitch angle of the...
US20120014792 CIRCULATION CONTROLLED VERTICAL AXIS WIND TURBINE  
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...
US20090162199 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.
US20120134814 WIND TURBINE ROTOR BLADE WITH FAIL-SAFE AIR BRAKE FLAPS  
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...
US20110070084 ELECTRIC FAN CAPABLE TO MODIFY ANGLE OF AIR SUPPLY  
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...
US20130164130 STIRLING ENGINE WITH FLAPPING WING FOR AN EMISSION-FREE AIRCRAFT  
Aircraft with an emission-free drive and method for emission-free driving of an aircraft. The aircraft includes a drive device, having a flapping wing device, structured and arranged to generate...
US20090285682 Wind Turbine With Deployable Air Deflectors  
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...
US20110255968 ADJUSTER DEVICE FOR AN AIRCRAFT, COMBINATION OF AN ADJUSTER DEVICE AND AN ADJUSTER DEVICE FAULT RECOGNITION FUNCTION, FAULT-TOLERANT ADJUSTER SYSTEM AND METHOD FOR RECONFIGURING THE ADJUSTER SYSTEM  
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...
US20120301296 FLOW CONTROL ON A VERTICAL AXIS WIND TURBINE (VAWT)  
A control system is presented for controlling operation of a vertical axis wind turbine (VAWT) for generating energy from an incoming fluid flow. The control system comprises at least one flow...
US20080145219 VORTEX GENERATORS ON ROTOR BLADES TO DELAY AN ONSET OF LARGE OSCILLATORY PITCHING MOMENTS AND INCREASE MAXIMUM LIFT  
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...
US20140099204 BRAKING DEVICES FOR VERTICAL AXIS WIND TURBINES  
Braking devices for wind turbines having a vertical axis are disclosed. An example braking device includes a flap able to tip about a tipping axis. The example flap has a center of gravity...
US20090191057 Multi-Axis Wind Turbine With Power Concentrator Sail  
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...
US20080226448 PROFILE DEFORMATION USING THE EXAMPLE OF A ROTOR BLADE  
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...
US20090220339 WIND DEFLECTOR FOR WIND TURBINE AND WIND TURBINE INCORPORATING SAME  
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.
US20140044542 MAXIMALLY EFFICIENT VERTICAL AXIS WIND TURBINE  
A maximally efficient vertical axis wind turbine (MEVAWT) includes a rotatable circular frame having upper and lower concentric flat rings or disks which support a plurality of, typically three,...
US20150204307 WIND TURBINE BLADES  
Wind turbine blades comprising a deformable trailing edge (DTE) section extending chordwise and spanwise, wherein the DTE section is split in a suction side subsection and a pressure side...
US20090053060 Wind turbine blade control system  
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...
US20120224965 CONTROL OF WIND TURBINE BLADE LIFT REGULATING MEANS  
The invention involves a wind turbine comprising at least one blade (5) in turn comprising a blade body (501), lift-regulating means (502) adapted for movement in relation to the blade body (501)...
US20150098821 REVERSE FLOW LOAD MITIGATION DEVICE FOR A WIND TURBINE BLADE  
A reverse wind load mitigation device (30) is provided for a wind turbine blade (20). The device (30) comprises a hinge member (32) attachable to a trailing edge (26) of a wind turbine blade (20)....
US20070036651 Fan and blade thereof  
A fan includes a frame and an impeller. The impeller is disposed in the frame and the impeller has a plurality of blades. Each blade has a wing part and a flap part, and the wing part and the flap...
US20120141272 WIND TURBINE ROTOR BLADE WITH PASSIVELY MODIFIED TRAILING EDGE COMPONENT  
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...
US20110110777 ACTIVE FLOW CONTROL DEVICE AND METHOD FOR AFFECTING A FLUID BOUNDARY LAYER OF A WIND TURBINE BLADE  
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...
US20100014970 WIND TURBINE BLADE WITH LIFT-REGULATING MEANS IN FORM OF SLOTS OR HOLES  
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...
US20140003941 HYDRUALIC CONTROL VALVE, A DEVICE FOR ADJUSTING BLADE PITCH, AND AN AIRCRAFT PROVIDED WITH SUCH A HYDRAULIC CONTROL VAVLE  
A hydraulic control valve (10) provided with at least one body (11) having a jacket (12) with a feed orifice (13). The hydraulic control valve (10) has a transfer rod (15) provided with at least...
US20150233342 WIND TURBINE DOME AND METHOD OF ASSEMBLY  
An aerodynamic dome structure that is placed in front of a wind turbine hub includes a plurality of arcuate panels. The arcuate panels are interconnected to form a dome-shaped structure. A...
US20110052391 INDEPENDENT CONTROL OF SHORTENING LINES IN AN AERODYNAMIC WING  
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...
US20130216379 FLUID DRIVEN VERTICAL AXIS TURBINE  
A fluid turbine comprises a rotor rotatable in use about an axis transverse to the direction of fluid flow, the rotor having a first part carrying a plurality of arcuate blades that may be...
US20090269198 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...
US20090074573 WIND TURBINE BLADE WITH CAMBERING FLAPS CONTROLLED BY SURFACE PRESSURE CHANGES  
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...
US20150203182 Propulsion Unit for Maritime Vessel  
Propulsion unit (11) for propulsion and maneuvering of a maritime vessel, which includes a nozzle (12) wherein a propeller section (13, 13a) is arranged, which propeller section (13, 13a) is...
US20110031760 SUPERCONDUCTING TURBINE WIND RING GENERATOR  
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...
US20150232171 ACCESSORY DRIVE GEARBOX FOR CONTROLLING THE FLAPS OF AN AIRCRAFT  
An accessory gearbox for a turboshaft engine of an aircraft, the gearbox including a casing, an aircraft wing flap control rod arranged so as to slide axially inside the gearbox and an actuator...
US20080145220 On-blade actuator for helicopter rotor blade control flaps  
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...
US20120328435 Furling Mechanism for a Vertical Axis Turbine  
A furling mechanism for a sail of a vertical axis turbine, the furling mechanism comprising: first and second elongate furling spars attachable to first and second edges of the sail; wherein each...
US20140112780 WIND TURBINE AND METHOD OF OPERATING THE SAME  
A wind turbine is provided. The wind turbine includes at least one blade having a pressure side, a suction side, a leading edge, and a trailing edge that define an airfoil-shaped profile. The...
US20080145221 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...
US20090126612 Waterwheel  
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...
US20120070283 HINGED CONNECTION APPARATUS FOR SECURING A FIRST WIND TURBINE COMPONENT TO A SECOND  
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...
US20130177414 METHOD AND SYSTEM FOR CONTROLLING THE CLEARANCE AT THE BLADES TIPS OF A TURBINE ROTOR  
A system and method for controlling clearance between tips of moving blades of an aeroplane gas-turbine engine and a turbine shroud of an outer casing surrounding the blades. The method includes...
US20140271192 ACTUATION MECHANISMS FOR LOAD MANAGEMENT DEVICES ON AERODYNAMIC BLADES  
Systems, apparatuses, and methods are provided for actuating one or more load management devices on a wind turbine and/or a wind turbine blade. Each actuator may exhibit one or more beneficial...
US20140186180 Switchable Vortex Generator and Array Formed Therewith, and Uses of the Same  
A vortex generator is useable in a model in a fluid-dynamic channel. In order to save time during the development of vehicles, in particular, aircraft, to save wind tunnel time, it is suggested to...
US20130177419 WIND TURBINE  
The invention relates to a wind turbine, comprising a hub, at least one blade, said blade being pivotably installed at said hub, at least one pitch bearing, said pitch bearing having an inner...
US20130251525 Lift Propulsion and Stabilizing System and Procedure For Vertical Take-Off and Landing Aircraft  
Lift propulsion and stabilizing system and procedure for vertical takeoff and landing aircraft that consists in applying simultaneously and combined as lifters during the initial portion of the...
US20120224964 COMPOUND MOTION STRUCTURE  
A compound motion structure (3) for connection between two surfaces comprising a first arm (5) and a second arm (7) swingable coupled together through a first hinge connection (13), a first...
US20080157528 Wind-Energy Power Machine and Storage Energy Power Generating System and Wind-Driven Power Generating System  
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....
US20110135472 AERODYNAMIC FLIGHT CONTROL SURFACE SAID OF CROCODILE STYLE FOR AIRCRAFT  
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...
US20130022464 Control of a wind turbine, rotor blade and wind turbine  
A wind turbine rotor blade is equipped with an air chamber and equipped via the air chamber to route a modulation beam out of the rotor blade such that the air current along the rotor blade is...
US20090148285 MULTI-SECTION WIND TURBINE ROTOR BLADES AND WIND TURBINES INCORPORATING SAME  
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...
US20150219064 Blade Wheel of a Kaplan Turbine  
The invention relates to an impeller for a Kaplan turbine, comprising the following features or components: a shaft, a plurality of blades; a hollow hub which is located on the free end of the...
US20140234104 ROTOR BLADE WITH CONTROL FLAP  
A rotor blade (1) with an exterior shell (20) extending in a span and chord wise direction and at least one control flap (4) extending in essentially span wise direction to said exterior shell...

Matches 1 - 50 out of 119 1 2 3 >