Abstract: The instant invention deals with the solution to technical flaws of existing vertical axis windmills in which the wind strikes simultaneously on inward and outward facing sides of rotor blades which reduce efficiency. Hence, this invention, i.e., the vertical axis windmill with wind guiding device, includes vertical plates which are fixed from the bottom of a base structure to the top of a rotor in an annular array. In between any two vertical plates, inclined plates are fixed from the bottom of the base structure to the top of the base structure. These plates are tilted towards the concave side of the rotor blades. The vertical and inclined plates are fixed in angular and radial directions so that whenever the wind blows from any direction, it gets compressed and then is diverted towards the wind receiving blades. Also the vertical plates protect the convex side of the rotor blades from wind while diverting the wind towards the wind receiving blades.

Abstract: A wear-free, self-contained control device for an aerodynamic emergency brake of a wind energy converter is presented that comprises multiple components in order to provide a most effective means to control the rotation of a vertical axis wind turbine by a brake, which is able to activate itself without external actuation in malfunction situations and is able to shut down the vertical axis wind turbine. Therefore, a mass element is utilised to store mechanical energy which in turn is used to deploy an aerodynamic braking operation. It also represents a means to control and limit the amount of torque, as absorbed by the turbine in high-wind conditions, and thus provides the ability to harvest electrical/mechanical energy, beyond the normal operational wind speeds of turbines.

Abstract: A vertical axis wind turbine which includes a rotor having three radially extending blades spaced at even intervals about a central axis. Each radially blade having an outer edge that lies on an imaginary circle of a first diameter. Each radially extending blade including a plurality of spaced airfoil sub-blades separated by gaps for the passage of air therethrough. Each of sub-blade having a leading vertical edge, and a trailing vertical edge and being positioned with the trailing vertical edge along a common radius line of the imaginary circle. Each sub-blade is skewed such that its cord line is rotated negative 45 degrees with respect the radius of the imaginary circle. The airfoil sub-blades maximize energy production by creating a secondary wind flow of a higher velocity for impingement upon blades of the rotor, and utilize backpressure during the second half of a rotation cycle to efficiently break the rotor against overspeed.

Abstract: A vertical axis omni-wind turbine having a wind sail centrally mounted to a rotor, the wind sail consisting of two vanes one on each side of the rotor in generally planar arrangement. The vanes are substantially identical with each having a generally concave surface with an opposite or reverse face that is generally convex. As assembled and mounted to the rotor, one vane presents the concave face to the wind while the vane 180 degrees away presents the convex face. The concave face operates to capture the wind to force rotation of the rotor while the convex face offers minimal resistance to rotor rotation. With continued rotation the reverse, or backside, of the convex surface, which is a concave face, is then presented to the wind, thus to provide continued rotation.

Abstract: A device for adjusting an angle-of-attack (?) of blades in a lift-type vertical axis turbine comprising a vertical rotating axis, a rotatable cantilever support wing fixed on the vertical rotating axis, a wind rotor comprising a plurality of blades mounted on the cantilever support wing, at least one cam disposed along an axial direction of the vertical rotating axis, the axial direction of the cam being parallel to the rotating axis, and for any point in a contour line of the cam, the angle of attack ? being set according to the following formula: ?=???, wherein ? is the angle of attack; ? is an azimuth angle; ? is a rotating angle for blades; and ?, ?, and ? are preset values.

Abstract: A Savonius vertical axis wind turbine rotor has first and second curved vanes having remote substantially vertical edges widely spaced form each other, and proximate substantially vertical edges more closely horizontally spaced from each other and horizontally overlapping are associated with a substantially vertical central shaft construction. The shaft construction is operatively connected to the vanes and mounts the vanes and adjacent the proximate edges. The central shaft construction may comprise a perforated shaft (e.g. a single perforated shaft), or multiple shafts. In any event, the shaft construction, and mounting of the rotor vanes, allow, during use, spillover of wind from the proximate edge of one vane to another vane during powered rotation of the vanes in response to wind. The rotor is preferably omni-directional. The rotor may have a third set of vanes, and different vertically spaced sets of vanes circumferentially offset with respect to each other.

Abstract: A vertical-axis wind turbine which has a central rotary tower upon which are fixed substantially vertical blades. The blades are capable of rotating and moving radially relative to the central tower, the movement of each blade being independently controlled based on the conditions to which it is constantly subjected so as to optimize the overall performance of the wind turbine.

Abstract: A Savonius vertical axis wind turbine rotor has at least three spokes, at least two vanes, and fasteners. Each spoke includes a hub with central opening and arcuate ribs integral with the hub and extending radially outwardly. Channels are defined in at least one surface of each rib. Vanes of sheet material generally conform to an inner or outer surface of the ribs and have openings aligned with the channels. First fasteners pass through the openings into the channels and cooperate with second fasteners provided within the channels. Each hub may define a clamp which cooperates with a shaft, the clamp including a radial slot in the hub communicating with the central opening and fastener receiving elements on opposite sides of the slot. The vanes may overlap the central opening so that there is spillover from one vane to the next when the rotor is rotated by the wind.

Abstract: A wind turbine for generating electricity is configured as a drum with a housing that has adjustable shutters to control the amount of wind reaching the turbine blades. Alternatively, the turbine blades can be pivotably mounted and opened and closed using a cam follower, cam track system to minimize wind exposure to downstream turbine blades.

Abstract: A vertical axis multi-phased wind turbine power generating system is disclosed. An adjustable air scoop directs air from a first phase of the prevailing wind into an air turbine for efficient power generation. An exit section, which uses a second phase of the prevailing wind in combination with an optional and adjustable exit section drag curtain or barrier, provides for efficient re-entrainment of this first stage of power generating air back into the downstream prevailing wind. The adjustable air scoop and adjustable exit drag curtain or barrier, where utilized, is automatically rotated in a self correcting manner to be suitably and optimally oriented to the prevailing wind direction. The design provides for a second stage of power generation to be accomplished by additionally utilizing a portion of the second phase of prevailing wind to directly or indirectly drive the turbine in a second stage of power production.

Abstract: A vertical axis wind turbine having a plurality of blades spaced from a rotatable around a rotor shaft vertical to the ground. The plurality of blades are arranged in a helical pattern about the rotor shaft. Each blade is flexible to move in response to wind and has a top, bottom, leading edge, and trailing edge wherein the leading edge is in the shape of an airfoil. A hub having a plurality of blade attachment rods radially extending from the rotor wherein in one blade is secured to one of the attachment arms. The hub has a plurality of attachment rods radially extending from the rotor wherein one blade is secured to one of the attachment rods near the center and wherein the top of each blade is closer to the rotor than the bottom of each blade.

Abstract: A wind powered turbine engine comprising an internalized containment and control chamber, intake enhancement, vacuum induction exhaust port and horizontally rotating rotor The turbine functions similarly to a steam or gas turbine engine. The radius of the control chamber decreases progressively as it curves around the periphery of the turbine rotor in the manner of a spiral.

Abstract: A method and apparatus (10) for extracting energy from flowing fluids using a diffuser (11) which has side walls (14) formed from a series of aerofoil section members (15) with gaps (29) provided between the leading and trailing ends of the members (15) to allow introduction of fluid from outside of the diffuser (11) into the diffuser flow passage (16) such that increased energy can be extracted from the flowing fluid by a prime mover (20) located in the flow passage (16).

Abstract: A system and method for orienting first and second reaction turbines relative to an axis of rotation responds to a fluid flow having a flow orientation axis. The fluid flow is received in a casement. The casement has first and second endplates situated parallel and spaced apart along the axis of rotation. A first half of the fluid flow drives the first reaction turbine to rotate with a first spin orientation in a plane perpendicular to the axis of rotation to produce a first torque about the axis of rotation. The second half of the fluid flow drives the second reaction turbine, offset from the casement plane relative to the first reaction turbine, with a second spin orientation opposite the first spin orientation to produce a second torque about the axis of rotation. The casement is oriented about the axis of rotation in response to the first and second torques.

Abstract: An apparatus for air cooling an object. The apparatus includes a plate including a first surface and a second surface and a plurality of aerodynamic fins being fixedly disposed on the first surface in an arrangement along periphery of the plate. The arrangement of the plurality of aerodynamic fins defining a central volume of space. Additionally, the apparatus includes a blower including a plurality of impeller blades rotatably disposed within the central volume of space for rotary motion about an axis of rotation. In particular, the second surface is for thermally contacting with the object and the axis of rotation is substantially perpendicular to the first surface. Furthermore, the rotary motion of the blower creates an air inflow along the axis of rotation into the central volume of space and an air outflow through the plurality of aerodynamic fins in radial directions.

Abstract: A vertical axis type wind power station and a blade manufacturing process, which can stabilize the turning motions of blades and can raise the power generation efficiency by lightening the blades to smoothen the turning motions of the blades; a structure and method for mounting the wind-driven device of a wind power station, by which the wind-driven device can be easily disposed at the upper portion of a building; and a windbreak wind power plant for breaking the wind by using the vertical axis type wind power stations or wind-driven devices arranged along the shoreline or the like.

Abstract: A turbine generator system, having: a rotatable base; and a plurality of rotor vanes extending from the rotatable base, wherein each of the rotor vanes have helical tapered inner and outer surfaces, and wherein each of the rotor vanes is curved to catch flow perpendicular to the axis of rotation of the rotatable base and to direct the flow into a vortical flow between the inner surfaces of the rotor vanes.

Abstract: A wind driven vertical axis power generating system is disclosed. An air scoop directs air from the prevailing wind into an air turbine. An exit drag curtain provides for an efficient re-entrainment of the power generating air back into the prevailing wind. The design provides for an efficient method of utilizing the energy from a prevailing wind. The air scoop and exit drag curtain may be rotated to be suitably oriented to the prevailing wind direction. The invention is visually pleasing in shape, as well as efficient in the production of useful power.

Abstract: An apparatus for oscillating a vane comprising a main lever pivoted at one end about a reference axis, and pivotally coupled at the other end to the vane about a vane axis remote from the reference axis; an angle change assembly connected to the vane such that rotation of the angle change assembly rotates the vane; and, a drive assembly, the drive assembly comprising a crank arm adapted to be pivoted about a fixed crank axis; a lever drive arm pivotally connected to the main lever at a point remote from the reference axis and pivotally connected to the main crank remote from the crank axis; a coupling member having first and second coupling arms connected together at a base, the base being adapted to pivot about a coupling axis; an angle drive arm connected at a first end to the angle change assembly for rotation thereof and pivotally connected to the first coupling arm remote from the coupling axis; the second coupling arm being pivotally connected to the lever drive arm remote from the coupling axis, the

Abstract: A structure of an upwind type wind turbine and the operating method thereof capable of preventing the occurrence of damage of the blades by evading excessive irregular loads from acting on the blades in the slanting direction in the event of power failure when strong wind blows, are provided. In the upwind type wind turbine having a nacelle supported for rotation on a support, the nacelle is rotated to a downwind position by rotating it by 180° from a normal upwind position and kept in stand-by condition at a downwind position when detected wind speed is higher than the predetermined cutout wind speed, which is the reference wind speed for shifting to an idle operation state. When the detected wind speed is higher than the DWSS wind speed determined based on the maximum permissible instantaneous wind speed, the nacelle is rotated from an upwind position to a downwind position and the yaw brake is released.

Abstract: A vertical axis wind turbine having a plurality of blades spaced from a rotatable around a rotor shaft vertical to the ground. The plurality of blades are arranged in a helical pattern about the rotor shaft. Each blade is flexible to move in response to wind and has a top, bottom, leading edge, and trailing edge wherein the leading edge is in the shape of an airfoil. A hub having a plurality of blade attachment rods radially extending from the rotor wherein in one blade is secured to one of the attachment arms. The hub has a plurality of attachment rods radially extending from the rotor wherein one blade is secured to one of the attachment rods near the center and wherein the top of each blade is closer to the rotor than the bottom of each blade.

Abstract: A wind power plant having a tower open at the top and provided with a side inlet for the wind for generating a cyclone in the tower and a substantially horizontal turbine that has inlets through the base and an outlet to the center of the cyclone in the tower and that is driving a generator. The tower is rotatable and has a non-circular elliptical shape viewed in the horizontal plane. This shape increases the power of the wind power plant as compared to a tower with a circular shape. During operation, the tower is turned so that the wind inlet is always facing the wind.

Abstract: A device and method for conversion of the energy of medium flows are provided. The proposed device and method ensure suppression of the vortex streams in the flow on the leg of its motion along the radially converging trajectories and concentration of the flow energy, which is expressed by the increase of its velocity and decrease of the summary area of the cross section of the converging trajectories. As the flow runs along the first system of helical trajectories the following takes place: the harmful secondary vortex jets continue attenuating, the degree of concentration of the flow energy increases and velocity components form in the flow, which correspond to natural vortex streams, for instance, tornadoes, whirlpools.

Abstract: A new design of vertical axis wind turbine is disclosed based on a dome structure using dome struts as blades that work in concert to produce rotational motion. The stability and low cost of the new design allows the turbine to function in low wind speed regimes as well as high speed winds that would be encountered in off-shore wind installations. The large stresses and structural requirements of mounting large horizontal axis wind turbines, particularly off-shore, are avoided with the new system. A new energy distribution system is proposed that will capture abundant off-shore wind energy, store it aboard a generator/delivery ship in the form of Hydrogen gas, and deliver it to an existing shore based power plant to produce electricity using a conventional gas turbine. Alternatively, the Hydrogen can be used to produce methane from coal using known processes to add natural gas to pipelines in areas that would normally be consuming the material.

Abstract: A wind turbine apparatus, comprising an upright shaft defining an upright axis, at least two blades operatively connected to the shaft to rotate about the shaft axis as the blades are wind driven about the axis, the lowermost portion of each blade being offset, azimuthally, relative to the uppermost portion of each blade, baffles carried by the blades to project directionally to receive impingement of wind for creating torque transmitted to the blade to effect blade rotation about the axis.

Abstract: An apparatus for generating electric power from water currents comprises a housing having at least one pair of channel, at least one pair of turbine assemblies and at least one pair of generator assemblies. Each channel of the pair has an axial intake, an axial discharge opening and a side intake. Each side intake extends along a length of the channel and faces in an upstream direction to receive a side inflow of water and directs the side inflow up against an interior surface of the channel to create a vortical flow structure having a low pressure core. The vortical flow structures are produced downstream of the turbine assemblies to effect an increase in a pressure drop across each of the turbine assemblies. The apparatus also has partition extending between the channels near said axial intakes.

Abstract: A vertically collapsible vertical axis wind turbine may be used on land, or on a watercraft (e.g. a multihull such as a catamaran). The turbine may include a substantially vertical shaft; at least two vane supports mounted by the shaft; and at least two vertically collapsible material vanes supported by the vane supports, so that the vanes are movable from a first operative position in which the vane material is substantially taut, to a second inoperative position in which the vane material collapses. The vane supports are positioned, and the vanes are constructed, so that the wind turbine preferably has a Savonius or an open helix configuration. When used on multihull watercraft a propulsion mechanism is mounted between two of the hulls, and there is an operative connection between the wind turbine shaft and the propulsion mechanism. The operative connection may be a flexible shaft having at least about a 70 (e.g. about 90) degree bend therein.

Abstract: A wind-actuated electric power alternator is disclosed. The wind-actuated electric power alternator includes an impeller enclosure having a generally triangular cross-sectional configuration. An impeller is rotatably mounted in the impeller enclosure. An alternator is coupled to the impeller for generating electricity responsive to wind-blown rotation of the impeller in the impeller enclosure.

Abstract: In accordance with certain embodiments, a wind turbine blade includes an outer skin and an internal support structure. The skin has a closed airfoil shape and includes an outer surface, an inner surface, and opposite sides along a length of the blade. The internal support structure is disposed within the closed airfoil shape. The internal support structure includes at least one shear load bearing member disposed across the opposite sides and oriented lengthwise along the length of the blade. The internal support structure further includes a plurality of bending load bearing members disposed along the inner surface in a lengthwise direction along the length of the blade. The internal support structure is configured to position a shear center and a center of aerodynamic pressure loading of the blade at different locations relative to one another.

Abstract: A windmill 10 includes a frame 11 and a rotor 12 provided rotatively around the vertical shaft center. The rotor includes bosses 23, 24 located above and below, plural transversal blades 25 extending radially from the bosses, longitudinal blades 26 held by the front edges of the transversal blades 25 of both above and below bosses. The frame includes bearing 19, 20 supporting the bosses 23, 24 of the rotor rotatively around the vertical shaft center, spokes 17 provided radially supporting the bearing, and legs 15 holding the spoke 17 away from the ground. In the lower bearing 20, a generator connected to the boss 24 of the rotor 12 is accommodated.

Abstract: A wind power system (1) for generating power is proposed, comprising a rotor which is axially flowed through, is rotatably held on a shaft (2) and is provided with blades (3), as well as a guide device (5) which accelerates the air flow through the rotor (4). In order to provide advantageous conditions for generating power it is proposed that the guide device (5) consists of several flow conduits (6) tapering in the direction of flow, which conduits are arranged on the rotor (4) in a distributed way in the manner of a rim around the shaft (2), that the blades (3) are associated with one flow conduit (6) each and that the rotor (4) comprises an outside jacket (7) enclosing the same.

Abstract: A vertical shaft driving device wherein a plurality of rotary blades (8a, 8b, 8c and 8d) each including a blade (10) supported on a planetary shaft are equally arranged circumferentially of a central shaft (12) and capable of orbital motion integrally with the central shaft (12), and wherein the rotary blades are arranged in a multipoint intersection form, in which blade faces of the blades (10) are obliquely disposed with respect to radial directions with a center at the central shaft (12). By arranging the blades (10) in the multipoint intersection form, it is possible to provide the vertical shaft driving device, in which air flows or water flows can be efficiently utilized to obtain a great output power.

Abstract: The invention describes an Atmospheric Vortex Engine in which a tornado-like convective vortex (37) is produced by admitting air tangentially in the base of a cylindrical wall (1). The vortex is started by heating the air within the circular wall (1) with fuel (83). The heat required to sustain the vortex once established can be the naturally occurring heat content of ambient air or can be provided in a peripheral heat exchanger mean (61) located outside the circular wall. The heat source for the peripheral exchanger mean can be waste industrial heat or warm sea water. The preferred heat exchange mean is a crossflow wet cooling tower (61). The mechanical energy is produced in a plurality of peripheral turbines (21). A vortex engine could have a diameter of 400 m; the vortex could be 100 m in diameter at its base and extend to a height of 1 to 15 km; the power output could be in the 100 to 500 MW range.

Abstract: A wind turbine operable as either a vertical axis wind turbine or a horizontal axis wind turbine is disclosed.

Abstract: A novel modification of a Savonius rotor used as a wind turbine provides an exhaust channel in each vane. The vane of the modified Savonius rotor is formed into an “S” shape. The air that enters a given end of the vane exits that end through the new exhaust channel into the freestream. A plurality of modified Savonius rotors are stacked one on top of the other for self-starting and greater power output. The outer surfaces of the entire assembly may be coated with photo voltaic cell material for additional energy production. In one embodiment of the invention, a cone shaped solar collector is placed on top of the entire modified Savonius rotor assembly.

Abstract: A kaleidoscopic wind machine for visual entertainment and other uses. The framework of the wind machine includes a vertical mast and a horizontal axle that can swivel about the mast. One or more wheel structures are rotatably attached to the horizontal axle. Each wheel structure includes a rim, a hub, and a plurality of stays extending between and attached to the rim and hub. A plurality of jib sails are attached to each wheel framework in a manner adapted to cause the wheel to rotate about the axle when the wind blows against the sails. A positioning vane is rotatably attached to the downwind end of the axle and is adapted to point the upwind end of the axle into the wind when the wind blows.

Abstract: A flow-forced generator adapted with a turbo-charging deflection hood having at the peripheral of the vortex ring in the generator provided with an automated directional turbo-charging deflection hood for the air or fluid to produce turbo-charging results due to the reducing deflection of the hood, thus to increase the power of the generator in case of insufficient flow force.

Abstract: A horizontal wind generator comprises a horizontal windmill drivingly coupled to an electrical generator. The windmill includes a vertical drive shaft mounted for rotation in a base, with a plurality of wind drive units being mounted in wind catching positions at spaced axial locations along the drive shaft. The drive units comprise oppositely facing wind catching elements mounted on opposite sides of crossbars or frames non-rotatably attached to the pole. Multiple wind drive units are spaced along the pole and angularly displaced from adjacent units at regular intervals around the pole. Two or four spaced drive units are particularly desirable. Wind catcher elements formed of cup shaped bowls or split barrels are particularly effective and are inexpensive. The wind generator is drivingly attached to an electrical generator through a gear box and belt or chain drive mechanism. The horizontal windmill rotates the electrical generator within its desired speed range without any governor or speed control.

Abstract: A device for generating electricity in which wind blowing from any direction causes the rotation of sails around a vertical tower. As the sails rotate the sails moving toward the wind are automatically feathered, and the sails moving away from the direction of the wind are prevented from being feathered by sail restraints. An inner sail restraint positions each sail so that the sail gybes at an earlier time than would otherwise occur. An outer sail restraint “catches” the sail as it gybes, capturing much of the energy of the gybe, adding additional rotational force. The device may be used to extract energy from the wind to produce electricity.

Abstract: A turbine for production of electric energy in flowing water, comprising a number of shaped foils (5), each foil (5) being attached with a shaft (6) to a supporting structure (3) which is connected to the main shaft (2) of the turbine, and the shaft (6) of each foil (5) being mainly parallel with the main shaft (2). Each foil (5) is equipped with a step motor (8) and encoder (16), and the main shaft (2) is equipped with an encoder (18) and circuit breaker (19); an external measuring device (22) for measuring the speed of the water (11); and a computer (23) comprising a particular computer programme, to obtain that the signals from said encoders (16,18) and said measuring device (22) being processed in said computer (23), to achieve by assistance of said step motors (8) that the angle of a main surface of each foil (5) be individually regulated into a desired direction of attack relative to the direction of said flowing water (11).

Abstract: A wind turbine generator is disclosed which includes a hub, a plurality of wind driven blades arranged around the hub, a drive belt or drive chain or other mechanical drive driven by the plurality of blades, an electric generator driven by the mechanical drive; and a boxlike frame forming a wind blocking wall for blocking wind from blowing against any of the plurality of wind driven blades in the reverse direction. In one arrangement, the wind turbine generator further includes two oil or gas tanks, and the boxlike frame is placed between the tanks to take advantage of the natural wind channeling between the two tanks. In another arrangement, the wind turbine generator further includes a house or building and the boxlike frame is built into the side of the house or building. The boxlike frame is also built into the top of a roof or the middle of a roof in other arrangements.

Abstract: A fluid drive conversion system having a plurality of flat foils rotatably connected to a vertical shaft such that the foils are generally vertical in position, pivot about a vertical axis, are a predefined distance, at least about one quarter of the width of a foil, from the vertical shaft thereby creating a central space. In operation, fluid flows through the central space and simultaneously pushes the back side of at least one foil while pushing the front side of one or more remaining foils, resulting in all of the foils rotating about the vertical shaft and contributing to the generation of usable energy. A wing is pivotally connected to the distal end of each radial arm and a bottom radial arm wherein each wing is in a general vertical orientation. The fluid drive conversion system employs either a conventional gear system, a conventional pulley system, or an electrical generation assembly using magnets, coils, and a means for harnessing an electrical current.

Abstract: A wind rotor comprises a base, a rotor frame rotationally supported on the base for movement about a substantially vertical axis in one of a clockwise or counter clockwise direction, and a plurality of wind receiving vanes pivotally disposed on the rotor frame for movement about a substantially vertical axis in a clockwise and counter clockwise direction between a first closed position and a second open position. The movement of each vane from the first closed position to the second open position further being independent of the other vanes. A variable resistance damping mechanism assembly is disposed between each vane and the rotor frame. The variable resistance damping mechanism is configured to provide damping in both the clockwise and the counterclockwise directions, and to dampen a greater amount in one of the clockwise or counterclockwise directions than in the other.

Abstract: A vertical axis wind turbine including a wind turbine which depends on a vortex down wind of the turbine enhancing the air flow past the vertical turbine. The vertical axis wind turbine structure includes a rectangular shaped turbine with four orbiting panels mounted to rotate at the top of a pyramidal base structure which generates a substantially horizontal vortex immediately down wind of the turbine, thus enhancing the air flow past the turbine.

Abstract: The invention is a system, device and method that captures wind energy and converts it into mechanical or electrical energy. In a system embodiment, the system transfers wind power to rotational energy. The system includes a wind capture means that uses wind to generate a mechanical force, an energy coupling means for transferring the mechanical force to a horizontally mountable wheel having a shaft coupled thereto, and an energy transfer system that couples the mechanical force from the shaft to a machine. In a device embodiment, a wheel capable of receiving wind power is provided. The wheel includes an airfoil support having a center portion, a stop location, and an airfoil location, and an airfoil is coupled to the airfoil support at the airfoil location. A method of driving the wheel uses a mounted airfoil to capture wind energy in an airflow, where the airfoil is mounted to a horizontally mountable wheel.

Abstract: A wind power plant for producing electrical energy on a large scale, comprising a base, a housing, rotatable on said base around vertical axis. A wind tail, attached to the housing, rotate the housing toward direction of the wind, utilizing the power of the wind, and produces additional tunnel suction to the flow of the wind from front side to back side of the housing. A plurality of turbines, equipped with rotors with wide blades, is mounted inside the housing one above another. Deflectors cover from the wind the front side of the rotors above their axis of rotation while computer controlled governors are covering the remaining front side of the rotors below their axis of rotation, keeping steady the speed of rotation of the rotors. Working surfaces of turbines are covered from heavy snow and during the storm and protected from birds. Power plant saves the area of occupied land, utilizing higher speed of wind on higher elevations.

Abstract: A Darius windmill comprises a rotor having a plurality of blades around a vertical rotating shaft. Each of the blades is in the form of a bag of which the rear end portion with respect to the rotating direction thereof is cut to form an opening. The blade has a fixed uniform cross section along the vertical rotating shaft.

Abstract: A vertical axis wind turbine with a turbine rotor with rotor blades disposed for rotation about a substantially vertical axis. The turbine includes multiple vertically extending stator vanes circumferentially spaced apart about the rotor in an annular array. Each vane has a radially inward facing surface, a radially outward facing surface and a flange on an outer edge of each vane. The flange serves to create a turbulent swirling boundary layer on the vane surfaces that rotates in a direction that draws and redirects air flow into the air flow channels defined by the stator vanes that is then compressed by the narrowing of the channels and directed to the rotor blades to drive the turbine.

Abstract: A savonius type windmill with multiple openings covered with horizontal blinds to let the air flow in reducing the drag from one end of the rotor blade while completely shutting the other side of the rotor blade by the winds own force to produce maximum torque.

Abstract: A vertical axis wind engine, also referred to as a vertical axis wind turbine (VAWT) includes a support structure, a rotor mounted rotatably on the support structure for rotation about a vertical axis, and at least one airfoil for causing the rotor to rotate about the vertical axis in response to wind passing the wind engine. The airfoil has vertically extending leading and trailing edges, an angle-of-attack axis extending horizontally through the leading and trailing edges, and a pivotal axis extending vertically intermediate the leading and trailing edges. The airfoil is mounted on the rotor for pivotal movement about the pivotal axis and the rotor includes components for limiting pivotal movement of the airfoil to first and second limits of pivotal movement.