A wind energy generation turbine is built to take advantage of high winds in mountain passes and other areas of extreme wind velocity. A windmill section is raised high by support structures. Electricity generators are kept in the base of the windmill to reduce elevated weight. A nozzle or shroud channels wind into a narrow raceway to take advantage of the Venturi effect. Windmill blade tips housed within a circular raceway are strengthened by blade tip connectors and blade spar struts against high wind forces. Windmill blade angle and windmill wind facing are dynamically altered by computerized motors for maximum efficiency. Windmill blade angle and/or generator load maintain ratio of windmill blade tip speed to wind speed for efficiency. Turbine speed translation gears are able to decouple windmill from 60 Hz cycle or use water pumps and gravity to store energy at peak generation times.

A blade or wing element includes a plurality of ribs (20) rotatable and/or slidable with respect to one another whereby to vary the aerodynamic configuration of the blade or wing element by causing a twist thereof. A blade or wing or blade or wing assembly, including such a blade or wing element is disclosed, as well as an aerodynamic apparatus such as an aircraft, or a wind turbine. A method of assembling a blade or wing element is also disclosed.

An apparatus with rotating turbine including: a cage rotating around a cage axis, wherein the rotation of the cage around the cage axis induces a lift of the apparatus above the ground; and a plurality of turbines located within the cage, each turbine rotating around a respective turbine axis different from the cage axis, and including a turbine blade having an adaptable shape; a frame including a first frame portion and a second frame portion coupled to the first frame portion, and wherein the first frame portion pivots relative to the second frame portion; a connection between an end of the frame and a region of the frame away from the end of the frame.

The lengths and/or chords and/or pitches of wind turbine or propeller blades are individually established, so that a first blade can have a length/chord/pitch that is different at a given time to the length/chord/pitch of a second blade to optimize performance and/or to equalize stresses on the system.

The invention relates to a renewable energy power generating device for converting wind and/or water-flow energy into useable electrical power. The power generating device includes a support structure (112 A) rotatable about a first axis of rotation (C), a plurality of aerofoil blades rotatably mounted on the support structure (112 A) and free to rotate relative thereto about a second axes of rotation (Q) substantially parallel to and radially spaced from the first axis of rotation (C), and a means (162, 166, 168) for actuating the aerofoil blades (114) between first (114 A) and second (114 B) reflexed camber aerofoil section conditions such that the aerofoil blades (114) are freely rotatable to automatically set an angle of attack relative to a fluid flow direction (D) thereby to generate a lift force thereover and transmitting a torque to the support structure (112 A) to drive it through a repeating 360 degree rotary cycle.

A hydraulic rotary drive includes a stator and an impeller rotatably connected to the stator. The stator has a liquid chamber defining a liquid inlet, a liquid outlet, and a flow circuit extending between the liquid inlet and the liquid outlet. The impeller is rotatably has a plurality of butterfly blades positioned in the flow circuit, and a rotation axis. Each butterfly blade extends radially away from the rotation axis, and includes first and second wings that are rotatable relative to each other about a radial axis between an open position and a closed position.

The lengths and/or chords and/or pitches of wind turbine or propeller blades are individually established, so that a first blade can have a length/chord/pitch that is different at a given time to the length/chord/pitch of a second blade to optimize performance and/or to equalize stresses on the system.

The present invention describes a wind turbine whose blades have: a differentiated slope intended to compensate for the structural deformations caused by the wind action; a pitch control mechanism for better use of wind speed and direction in each section of blade length; parallel internal and movable structural tubes with each other that make the blade structure more flexible; steel wires connecting the blade ends so that they remain cable-stayed and rigid against wind forces; besides a tubular structure for wind blade; a wind turbine; and a method of controlling wind utilization. The present invention is in the field of renewable energy technologies.

A system and method for damage detection and for evaluating the real operation conditions for structural platforms using structural health monitoring is integrated to a system and method that permits for the platform to provide a flexible geometric control considering a self-adapting morphing which is capable of providing better operating structural platform performance.

A vertical axis wind turbine with variable thickness blade is disclosed. The wind turbine may include a blade including a skin having a first skin section and a second skin section. A first skin section thickness may be greater than a second skin section thickness. The blade may further include a bracketed structural member disposed on the first skin section. The bracketed structural member may include one or more L-shaped brackets. The wind turbine may further include a nut bar, which may be a flat nut bar. The bracketed structural member may be configured to hold the nut bar between the L-shaped brackets. The wind turbine may further include an arm connecting bracket that may be configured to attach the arm to the blade via the nut bar. The wind turbine may further include a transition fairing that may attach to the blade via the nut bar.