Abstract: A solar panel support apparatus comprising: a support frame for holding the solar panel; a support post pivotally connected to the support frame at a post pivot connection and anchored to an adjacent supporting surface, the support post for positioning the support frame above the supporting surface; and a linear actuator coupled at a proximal end to the support post by a support pivot connection and at a distal end by a frame pivot connection with the support frame, the post pivot connection and the frame pivot connection spaced apart from one another on the support frame; wherein a change in a length of the linear actuator results in pivoting of the support frame about the post pivot connection.

Abstract: The nacelle of a horizontal axis wind turbine is fixedly mounted on a tower, and the tower is mounted off-center with respect to a ring around which it is rotatable. The tower is a tripod. Two legs of the tripod are of fixed length and lie in a plane perpendicular to the axis of rotation of the turbine blades. The third leg of the tripod is of adjustable length and is aligned with the axis of rotation of the turbine blades. The third leg thus may be controlled to adjust for pitching of the base and other purposes. Multiple turbines, spaced apart laterally, may be mounted on a platform in a fixed orientation, with the platform rotatably mounted off-center relative to a base.

Abstract: A vane ring for a gas turbine engine includes a contoured stop that extends from the static flowpath wall, the contoured stop being of an airfoil shape such that a first side of the contoured stop matches a portion of a first side of the first variable vane along a chord length when the first variable vane is pivoted about the longitudinal axis to a first position.

Abstract: A multiple radial gap BLPMDC/BLPMAC motor/generator suitable for direct drive wind or other fluid medium driven turbines or other rotary machine application. Each rotor and stator segment are housed in a fixture having an intermediate interior ramp angularly inclined at an angle of from about 10° to about 80° to cause the rotor/stator segments to interact at the axis of rotation of the fluid medium driven rotating machine at the same angle.

Abstract: A controller of a wind turbine for causing the wind turbine to perform rotor turning includes: an input part for receiving a target azimuth angle at which a rotor of the wind turbine is to be stopped; and a pitch control part configured to cause the wind turbine to perform a pitch control to stop the rotor at the target azimuth angle. The pitch control part is configured to: control a pitch angle of a wind turbine blade of the wind turbine so that the rotor rotates at a predetermined rotation speed which is constant, in a first period until the rotor reaches a control-switch azimuth angle immediately before the target azimuth angle; and control the pitch angle so that a rotation speed of the rotor decreases from the predetermined rotation speed in a second period after the rotor reaches the control-switch azimuth angle and before the rotor reaches the target azimuth angle.

Abstract: The present invention relates to a wind turbine blade for a rotor of a wind turbine having a substantially horizontal rotor shaft, the rotor comprising a hub from which the blade extends in a substantially radial direction when mounted to the hub. The wind turbine blade comprises a profiled contour defining a leading edge and a trailing edge, a pressure side and a suction side connecting the leading edge and the trailing edge, the profiled contour generating a lift when being impacted by an incident air-flow, and a slat assembly located on the blade, the slat assembly comprising a slat device being supported by a support device positioning the slat device in a distance from the surface of the blade.

Abstract: Stator vane assembly includes plurality of vanes arranged in circumferential array, radially proximal mounting portion, radially distal mounting portion, and first latching mechanism. Each of plurality of vanes extends radially between radially proximal mounting portion and radially distal mounting portion, with each of plurality of vanes being pivotally mounted between radially proximal mounting portion and radially distal mounting portion. Plurality of vanes is movable between first arrangement allowing gas to flow across vanes, and second arrangement blocking gas flow across vanes. Pivot axis of each of plurality of vanes is offset from the line of aerodynamic center of pressure of vane towards trailing edge of vane, and first latching mechanism holds plurality of vanes in first arrangement. Upon receipt of signal, first latching mechanism releases plurality of vanes so that gas flow through vane assembly causes plurality of vanes to move from first arrangement to second arrangement.

Abstract: Systems and methods related to linear turbine systems are presented. Each embodiment described herein may be designed as a single-stage, linear, impulse turbine system. In an embodiment, a linear turbine includes a first shaft extending along a first axis; a second shaft extending along a second axis, the second axis being separated from and substantially parallel to the first axis; a first plurality of buckets to travel a first continuous path around the first shaft and the second shaft along a first plane, the first path including a first substantially linear path segment between the first axis and the second axis; and a nozzle configured to direct a first fluid jet to contact the first plurality of buckets in the first linear path segment.

Abstract: A method and apparatus for generating electrical power are disclosed. The method includes the steps of turning turbine blades of at least one turbine provided at a region of a subsea pipe or umbilical via a respective motion of seawater through a swept area associated with the turbine blades and generating electrical power responsive to turning of the turbine blades.

Abstract: An assembly of rotor blades and hub for a turbine, such as a tidal current turbine. Each rotor blade includes a cavity and at least two ribs extending into the cavity at a radially inward (lower) region of the rotor blade. The hub includes a journal for each blade and the journal extends into the cavity and is supported by the at least two ribs.

Abstract: A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially comprised of an electrically conductive material and configured to conduct electrical electricity from at least one of the connecting nodes to the other of the connecting nodes.

Abstract: A vertical-axis wind power generator having adjustable-angle rotating blades is provided, which can maximize generation efficiency through angle adjustment of rotating blades for upper and lower support arms. The vertical-axis wind power generator having adjustable-angle rotating blades is configured such that a rotation angle range, in which forward-rotation wind power is applied to the rotating blades, can be maximized and a rotation angle range, in which reverse-rotation wind power is applied to the rotating blades, can be minimized through angle adjustment of the rotating blades so as to apply maximum forward-rotation wind power to the rotating blades and to apply minimum reverse-rotation wind power thereto, and through angle adjustment of the rotating blades so as to generate forward rotation even by reverse-rotation wind power in a partial angle range.

Abstract: A power generation apparatus comprises a rotor rotatably mounted to a support and a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream. Each vane includes a wing-shaped main blade having leading and trailing edges, and a co-extensive conditioner blade having leading and trailing edges. The conditioner blade is spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit. A lift-varying device boarders the slot to vary the lift produced by that vane inversely to the speed of the moving fluid stream so that the rotor turns at a relatively constant rate. The rotor, driven by wind or water, may be coupled to the armature of an induction motor/generator to produce electric power.

Abstract: A wind turbine with a passive pitch control system is disclosed. The wind turbine comprises a tower with a nacelle mounted to the tower. A hub is rotatably mounted to the nacelle. The hub has a plurality of blades extending therefrom with each blade rotatable around a longitudinal axis of each blade. A pitch control system is operatively associated with each blade. The pitch control system controls the pitch of each blade around the blade's longitudinal axis. In a preferred embodiment, the pitch control system comprises a flyweight governor and a preloaded spring biased against each other.

Abstract: A power generation apparatus comprises a rotor rotatably mounted to a support and a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream. Each vane includes a wing-shaped main blade having leading and trailing edges, and a co-extensive conditioner blade having leading and trailing edges. The conditioner blade is spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit. A lift-varying device boarders the slot to vary the lift produced by that vane inversely to the speed of the moving fluid stream so that the rotor turns at a relatively constant rate. The rotor, driven by wind or water, may be coupled to the armature of an induction motor/generator to produce electric power.

Abstract: A vertical wind turbine to catch the wind force characterized by its system of aerodynamic panels are provided with blades fixed into horizontal axis that open and close simultaneously and symmetrically upward and downward due the gears like the butterfly wings rotated by 90° of its normal position, it is like opens an umbrella horizontally to receive on one side the wind buoyancy or pressure and in the other side close by the action of the wind. The top and bottom blades works as counterweight one to another both to open and close (flatness) which makes your weight null in relation to the effort of wind to open or close them independent of the self-weight of the blades what propitiate the maximum use of the wind force in the traction side without loss to the return of the blades to the traction position driving a vertical axis.

Abstract: An improved wind-powered generator, comprising a wind wheel with semi-flexible sails, a supporting tower that can rotate freely with the wind direction, a fairing that ensures the wind wheel is always downwind of the tower, energy generators affixed to the upper tower and mechanically coupled to the rim of the wind wheel, and a controller that changes the angle of attack of the wings.

Abstract: A method for controlling the position of blades of a two-bladed wind turbine when extreme conditions are detected or forecast for the wind turbine. When extreme conditions are detected or forecast, the wind turbine blades are positioned in a horizontal arrangement, and actively yawed such that a tip of one of the wind turbine blades points into the wind direction. The blades are yawed such as to actively follow the changing wind direction, resulting in a reduced surface area of the blades exposed to the extreme wind forces, due to the spear-like arrangement of the turbine blades. This reduced surface area provides for a reduction in the extreme loads which may be experienced by the wind turbine in such extreme wind conditions.

Abstract: According to one aspect of the invention, a device for converting kinetic energy of water waves to electrical power includes a turbine structure having multiple blades evenly attached to a first shaft, a first pulley wheel attached to the first shaft, a second pulley wheel attached to a second shaft disposed in parallel with the first shaft, an electricity generator is attached to the second shaft, and a platform is configured to support the turbine structure, the platform having an upper deck and a lower deck coupled to each other via a hinge. The upper deck is tilted from the lower deck via the hinge such that the first shaft is positioned with an inclining angle with respect to the water surface. The inclining angle is configured such that a distance and time for each fin to travel under the water surface between the entry point and exiting point are maximized while being near to the water surface.

Abstract: A method of operating a wind turbine having at least one rotor blade and an active flow control (AFC) system is provided. The at least one rotor blade has at least one aperture defined through a surface thereof, and the AFC system is configured to modify aerodynamic properties of the rotor blade by ejecting gas through the aperture. The method includes operating the wind turbine in a normal mode, determining whether an estimated insect density value surrounding the wind turbine is above an insect density threshold value based on a measured environmental condition, and changing a mode of the wind turbine from the normal mode to a cleaning mode different than the normal mode based on the estimated insect density value. The cleaning mode includes adjusting at least one operation parameter of the wind turbine based on the estimated insect density value such that fouling of the aperture is reduced.

Abstract: An off-shore wind turbine with a base supporting a pylon and a wind engine, the wind turbine being characterized in that the said base includes a tubular cavity, a bottom portion of said pylon being fixed in embedded manner inside said tubular cavity using a device that enables the angle of inclination of the axis (ZZ?) of the pylon to be adjusted relative to the axis (Z1Z?1) of the tubular cavity; and the adjustment device includes independent chocking mechanism interposed between the pylon bottom portion and the tubular cavity; and a centering mechanism secured to the pylon bottom portion and/or to the tubular cavity, the centering mechanism being situated inside the tubular cavity below at least some of the chocking mechanism and suitable for holding the point of intersection of the axis (ZZ?) of the pylon bottom portion with the axis (Z1Z?1) of the tubular cavity in a fixed position.

Abstract: A plurality of sail assemblies rotating on their axes rotate about the axis of the windmill hub to rotate a drive shaft. The drive shaft powers a generator, machine, pump, grind-stone or other load the mill is designed to operate. Fabric, metal, or plastic sails are fitted to the frame arms of the sail assembly such that they are releasable under upset conditions such as hurricane or tornado wind velocities or other catastrophic inclusion. In the preferred embodiment of the invention drive shafts housed in tubular metal, plastic, or fiberglass connect the gears of the hub to helical or bevel type right angle gearboxes that rotate the sails at a rate of one time for each two times the hub rotates. A second embodiment of the mill has sprockets at the sail assemblies which drive a sprocket at the hub of the mill. The sprockets are rotated one time for each revolution of the hub sprocket via a roller chain. And the sail assemblies rotate in the same direction as the rotation of the hub sprocket.

Abstract: An upstanding bladed rotor is journalled from support structure and a windshield assembly is also journalled from the support structure for angular displacement about an upstanding axis about the rotor. The windshield assembly includes a wind-shielding portion which extends generally about one half the periphery of the rotor and further includes a wind vane operative to maintain the assembly in predetermined position relative to wind incident upon the rotor with the wind-shielding portion in position to shield generally one lateral half of the rotor from the incident wind.

Abstract: A turbine for use with a turbine generator, the turbine including at least one turbine blade for positioning in a flowpath, a hub mounting the at least one turbine blade, and a rotatable shaft in operational communication with the hub via a hinge assembly, an axis of the hub being independent of an axis of the shaft. The hinge assembly is disposed between the shaft and the hub and configured to adjust an angle therebetween. A controller assembly is configured to adjust at least one operational characteristic of the hinge assembly during turbine operation. In one embodiment the operational characteristic is a teeter angle of the hinge assembly. In one embodiment operational characteristic is a stiffness or damping force. Methods for using and controlling a fluid turbine are also disclosed.

Abstract: A turbine for use in extracting energy from within a water flow comprises: an array of turbine blades formed and arranged for rotation, in use, about an axis substantially normal to the direction of water flow; wherein at least one turbine blade of the array is formed to be adjustable, in use, from a first, driving, configuration when moving with the direction of water flow, to a second, return, configuration when moving against the direction of water flow, and wherein the surface area of the turbine blade presented to the direction of water flow is reduced when in the return configuration.

Abstract: In a method for controlling a driving blade (6, 7) with respect to the wind direction, in particular in a wind or water engine with an axis perpendicular to the wind direction, in consecutive cycles of rotation of a frame (1) of the engine, the driving blade (6, 7) connected via a distribution (R) with a vane (30, 38) is set in a working cycle or in an idle cycle according to direction of its movement with respect to the wind direction, wherein the full rotation of the driving blade (6, 7) around its axis takes two rotations of the frame of the engine.

Abstract: A vertical axis wind turbine includes a propeller assembly formed from a hub with downwardly and outwardly depending blades. The propeller assembly has a polygonal base with the blades forming the bases of a triangular surface meeting at a common vertex. The hub is mounted on a spindle which is connected to a shaft which is rotatable. A bendable joint is provided between the spindle and the shaft such that the hub and blades appear to face into the wind and spin. A lower end of the rotatable shaft is connected to a means for utilizing the rotation of the shaft. The angle that the blades make to the hub may be changed such that the blade swept area presented to the wind may be regulated to either speed up or slow down rotation. Struts may be provided between the blades such that longer blades may be used.

Abstract: A vertical propeller system for capturing wind energy includes a coupling module coupled to a drive shaft to impart rotational energy to the drive shaft. The drive shaft rotates about a substantially vertical main axis. A first blade couples to the coupling module and rotates about a first blade axis. The first blade progresses through a first continuous, repeating sequence of first blade orientations, which include a first substantially vertical orientation and a first substantially horizontal orientation. The first substantially vertical orientation presents a maximal cross-section to a wind stream, the wind stream having a wind direction. The first substantially horizontal orientation presents a minimal cross-section to the wind stream. The first blade revolves around the coupling module in response to the wind stream, based on the first blade orientation, imparting rotational energy to the coupling module.

Abstract: The present invention is related to a rotor blade for a wind energy plant, with a blade root, with a first longitudinal portion starting from the blade root, with a second longitudinal portion, following up the first longitudinal portion and running into a blade tip, with a first surface, facing a tower of the wind energy plant in its assembled state, and a second surface, facing away from the tower of the wind energy plant in its assembled state, wherein an imaginary reference plane is spanned up by a rotation, taking place in the operation of the rotor blade, of the longitudinal axis of the first longitudinal portion around the rotational axis of a rotor of the wind energy plant carrying the rotor blade which prevents collisions of the blade tip with the tower of the wind energy plant.

Abstract: The invention relates to a driving force generating device including a column (1) provided with a plurality of flexible elements (3) positioned around the column (1), which react in response to the flow by rotating positively in the same direction. The invention is characterised in that the flexible elements take the form of aerodynamic membranes (3), the arrangement and shape of which correlate with logarithmic spiral patterns. The invention is also characterised in that it includes a movable head (2) positioned in the upper part of the central column (1) and a base (4) positioned in the lower part of said column (1), the upper part of each membrane (3) being secured to the movable head (1) and the lower part of each membrane being secured to the base (4). The invention can be used to balance kinetic, gravitational and centrifugal forces, thereby minimising resistance.

Abstract: A method and an apparatus for adjusting a yaw angle of a wind turbine comprising a rotor having a plurality of rotor blades and a hub are provided. The method is adapted for adjusting the yaw angle from an actual yaw angle to a desired yaw angle and comprises the steps of measuring a wind direction at the location of the wind turbine, measuring the yaw angle of the wind turbine and/or determining a wind direction relative to the nacelle orientation, calculating a pitch angle of at least one rotor blade as a function of the measured wind direction and the measured yaw angle and/or the wind direction relative to the nacelle orientation, and adjusting the pitch angle of the rotor blades according to the calculated pitch angle such that a yaw momentum is generated for changing the yaw angle from the actual yaw angle to the desired yaw angle.

Abstract: A support structure for a baseframe of a nacelle or the nacelle of a wind turbine is described. The wind turbine has a tower with at least one lower tower section, wherein the at least one lower tower section defines a vertical axis of the tower, a yaw bearing, the nacelle and a hub. The supports structure includes a lower side; an upper side; wherein the support structure has a support structure axis being defined as extending through the center of the lower side and the center of the upper side, and wherein the support structure is adapted to be mounted to a wind turbine such that the support structure axis is inclined relative to the vertical axis of the tower.

Abstract: A habitat friendly, wind energy system is disclosed for safely extracting usable energy from wind. Included are one or more concentrator wings that convert the dynamic pressure of wind into relatively lower static pressure and thereby induces a vacuum that draws wind into an area defined by the concentrator wings. The airflow regulation minimizes or prevents the stalling of, or the generation of a turbulent flow of wind over or between concentrator wings. Further included are multiple impellors, at least one power converter, a riser supporting these component pieces, all positioned within the area defined by the concentrator wings. Accordingly, one or more flow regulators are positioned to assist in promoting laminar flow across or between the concentrator wings and to reduce the dynamic pressure of wind on the riser to thereby increase efficiency of the system.

Abstract: An electrical power generation assembly comprising a main body having a low density to provide lift and wind driven means on its surface to generate electrical power. The main body has a part-circular, or a part-elliptical, cross section frontal region. The main body has a first distance and a second distance. The ratio of the first distance to the second distance is equal to or more than 0.5 and equal to or less than 5 according to the shape of the frontal region of the main body. The ratio of the diameter of the wind driven means to the first distance is equal to or less than 0.25.

Abstract: A wind power system is provided including at least one generator fan having a front face and a rear face. The system also includes a first wind capturing device positioned proximate to the front face. The wind capturing device can be configured to capture wind to create a first pressure proximate to the front face that is greater than a second pressure proximate to the rear face. The pressure difference causes the captured wind to flow across the at least one generator fan from the front face to the rear face.

Abstract: A habitat friendly, pressure conversion, wind energy extraction system is disclosed for safely extracting usable energy from wind. The system includes one or more shrouds or concentrator wings that convert the dynamic pressure of wind into relatively lower static pressure and thereby induces a vacuum that draws wind into a turbine centralized within the shrouds or concentrator wings. As such, the turbine impellor blades may be significantly smaller than the large diameter rotor blades of current popular designs and may be enclosed within the shrouds or concentrator wings that present themselves as highly visible objects and as such are easily avoided by birds in flight. The novel system in particular includes a device and method of airflow regulation than minimizes or prevents the stalling, or the generation of a turbulent flow of wind over or between the shrouds or concentrator wings.

Abstract: This invention pertains to a horizontal axis wind turbine of down-wind design that tilts rather than teetering to overcome loads produced by gyroscopic precession. Gyroscopic precession occurs to the rotor as it is spinning when it turns to adjust to or follow a wind directional change. It is absolutely necessary to provide a means by which to overcome this phenomena as it can lead to structural failures due to it's extreme effects. Wind turbines that can not overcome these effects usually have an active yaw system that will turn them very slowly in order to not encounter the effects of the extreme loads produced by gyroscopic precession. This invention also provides a means by which to control the rotor speed based upon the using of the turbine's own weight as a basis for that control. These two functions work in unison and are immediate in their response to provide for a superior dynamic wind turbine design that will be more cost effective to produce as well as maintain.

Abstract: A new modification in conventional wind mills wherein the wings are tilted between 95 degree to 159 degrees and their wings are modified, having thicker supporting shafts at the base and gradual thinner shafts towards their tips at their outermost circumference These wings are made with flexible material in metal or plastics to flex the wings with the wind gusts and reduce their sweep area and angle of attack in sync with wind speed.

Abstract: A vertical-axle wind power machine comprises a vertical axle, a plurality of jointed radial arms, a plurality of counterbalanced oblique blades at the support points thereof, a friction-rewarding rotary speed multiplying transmission, and an automatic rotary speed regulating means to be performed by either a wind-operated or an alternative digital controlled rotary speed regulating device; the combination of which provides the oblique blades with great sensitivity to the alternation of lee wind and head wind for automatic swinging to the most efficient lee angle at upstanding and overturned positions to sail nearly three quarters and streamline against the head wind resistance for the remaining quarter every circle of rotation, is able to convert the centripetal and centrifugal component forces to the same torque direction of the tangential component force from the same blade by an eccentric-guided angular bracket means and a fork-rooted radial arm, is able to offset the friction loss in the rotary speed mult

Abstract: Disclosure is made in this application of apparatus to synchronize and change the pitch of wind actuated flapping wings of a simulated bird.

Abstract: An improved wind turbine 10 is described having a swivel head 18 mounted at an upper end of a support tower 12 for pivoting about a substantially vertical axis Y. A radial blade rotor assembly 48 is mounted to the swivel head 18 for pivotal movement about a substantially horizontal pivot axis X that is offset and spaced downwind of the vertical axis Y. The rotor assembly 48 has a rotor shaft 50 that rotates about a rotor axis Z that is spaced from the horizontal pivot axis X. The rotor assembly has a plurality of airfoil blades 64 that are attached to and extend radially outward from the rotor axis. The blades 64 rotate with a shallow inward conical path about the rotor axis Z in the blades 64 extending radially outward at an inclined angle from perpendicular of between 0 and 5 degrees. An electrical alternator 80 is connected to the rotor shaft 50 for generating electrical power directly from the rotor assembly 48.

Abstract: A rotor bearing assembly for a wind power engine exhibits great stability and strength, and reduces flexural stresses on a mast of a wind power engine.The bearing body (2) is suspended from and mounted on a horizontal pivot axis (X) and carries a rotor assembly (3) on a short lever arm and an aerodynamic airfoil (5) on a log lever arm (4). In connection with a descending force, an airfoil (5) produces a counter torque about the horizontal pivot axis (X) opposed to the dynamic pressure-dependent torque due to the rotor assembly (3).

Abstract: A wind engine has a propeller which is a conical or flat wheel obligatorily surrounded by depression creating deflectors, and the blades of the propeller, occupying the quasi-totality of the propeller surface, are directly obliquely attacked by the wind, in the case of the conical rotor or, in the case of the flat wheel, after deviation by a grid of deflectors.

Abstract: The journals of two vanes of the wind turbine are connected with one another by a connecting rod 26 for absorption of the centrifugal forces of the vanes. Bearings with spherical faces are arranged between the ends of the connecting rod and the journals. The connecting rod is prestressed with a tensile force by means of a tubular bushing which surrounds the rod and which cooperates with threaded rings on the rod to tension the rod.

Abstract: A wind-driven electric current-producer has a magnetic field producing alternator rotor directly driven by an air turbine blade. The alternator and blade together are mounted on a vertically tiltable control frame which is pivotably mounted on a main frame that swivels with the wind direction in response to a guide vane. In high winds the blade and alternator tilt upward but continue to aim into the wind and produce current. The guide vane is low to accomodate the tilted blade path. The location of the pivot causes gravitational forces to tilt the control frame in both directions. Springs counterbalance the upward tilting forces. The spring mounts have a stop that limits the tilt in both directions.

Abstract: The disclosed wind turbine has a circular turbine wheel with a plurality of soft, furlable and unfurlable airfoils depending between a rim and hub. Each airfoil has associated with it a stepping motor for selectively furling and unfurling the airfoils. The turbine wheel is supported on a carriage which is in turn supported in a cantilevered manner from a central anchor which allows for revolving of the carriage, and therefore the turbine wheel, about the anchor. Control is provided for rotating the turbine wheel into a position upwind and normal to the wind direction. An upstanding pylon mounted on the anchor maintains the turbine wheel in an upright position. The pylon allows for revolving and rotating of the turbine wheel. It also provides for pivoting of the turbine wheel about a generally horizontal axis parallel to and spaced from the plane of the turbine wheel. A plurality of generators are driven by power take-off wheels mounted on the carriage which directly support the turbine wheel rim.

Abstract: A wind turbine assembly includes a wind turbine 18 mounted in a head 16, the wind turbine driving, via a gear box 22, an air compressor 24, 25, the inlet 26 of which is arranged to withdraw air from the vicinity of the blades of the turbine 18 to improve the efficiency of the turbine. The compressed air may be fed via a duct 12 for example to a reservoir or to a motor or gas turbine, for example, to drive a generator.

Abstract: The invention relates to a wind-driven generating plant for utilizing the energy contained in land and sea winds with at least one blade rotatable about a rotation axis, which is arranged in oblique-angled manner to the horizontal and is optionally connected to a pylon arranged so as to rotate coaxially to the rotation axis of the blade or blades, whereby the hub thereof used for receiving the blade base with associated energy transmission means is connected to a supporting member. Each rotor blade is at an angle .beta. of approximately 40.degree. to 80.degree. to the rotation axis of the rotor, which is oriented at an angle .alpha. of approximately 30.degree. to 70.degree. to the horizontal. The supporting member is arranged on a frame so as to rotate about a vertical axis or at an axis arranged in oblique-angled manner to the vertical.

Abstract: Disclosed is an inclined axis windmill. The windmill has a plurality of blades generally transverse to the upstanding rotor shaft. The blades have an airfoil cross-sectional shape and are oriented with a negative angle of attack, thereby allowing the leading edge of the airfoil to turn into the wind. The windmill preferably has a tilting assembly which tilts the rotor shaft and blades at an angle dependent upon the velocity of the wind. As the wind velocity increases the rotor shaft is automatically tilted into a more nearly vertical position by the control tail. This automatic tilting of the windmill provides automatic control of the rotor speed. The rotor blades are preferably pivotally connected to the rotor shaft.

Abstract: Cyclic pitch variation of the rotor blades of a horizontal axis wind energy conversion machine permit its operation at substantially design rotor speed and rotor torque over a range of wind speeds, by heading the rotor progressively out of the wind through a range from approximately 20.degree. for light winds to a near 90.degree. setting for gales, at which the power output is interrupted to permit the rotor to idle. Changes in wind direction will cause the rotor to follow the wind even though so headed out of it. By allowing the blades substantial freedom to adapt their pitch to side winds, the present construction allows rapid rates of yaw into a shifting wind, such as may destroy conventional rotors by the attendant gyroscopic forces. Further, by actively controlling their pitch, aerodynamic forces exerted by the cyclic pitch change blades substantially balance out the gyroscopic forces attendant to yaw.