65 results about "Magnus effect" patented technology

The invention discloses a novel aerofoil by utilizing a magnus effect. The novel aerofoil by utilizing a magnus effect comprises a flexible skin, wing ribs, beams, an aerofoil leading edge roller and a driving device, wherein the driving device drives the aerofoil leading edge roller to rotate; the front ends of the wing ribs are of circular arc concave structures; circular arc concave surfaces are provided with rolling bearings; the aerofoil leading edge roller is positioned in the circular arc concave structures at the front ends of the wing ribs, and are matched with the wring ribs through the rolling bearings; a plurality of rolling bearings are also installed at the peripheral edges of the wing ribs; the flexible skin wraps an aerofoil framework consisting of the aerofoil leading edge roller, the wing ribs and the beams; the aerofoil leading edge roller can drive the flexible skin to slide around the aerofoil framework. According to the novel aerofoil, the defect that the resistance is high as a cylindrical aerofoil is utilized for generating magnus lift force in the prior art is overcome; compared with the traditional aerofoil, the novel aerofoil has the advantages that when the aerofoil is in low-speed flight, only the rotation speed of a motor is required to be regulated, so that the slide speed of the skin is increased, also the aerofoil can obtain greater lift force; the loading weight is increased, and short-distance taking-off and landing are achieved, and the track requirement is lowered.

A wind turbine captures energy from a flowing fluid medium using drum-shaped drive elements that spin while traveling along a continuous orbiting course around a base. Attached roller bearings engaging stationary raceways can guide the drive elements. Means for spinning the drive elements can include toothed belts engaging drive element cog wheels. Spinning can provide Magnus effect enhancement. Wind energy is captured by the drive element motion, then transferred to the base cog wheels by a toothed belt and finally fed to an output shaft. The invention includes locating drive elements in a moving fluid medium, spinning the drive elements as they are urged by the wind along a continuous orbiting course and capturing energy by linking the motion of the drive elements to an external device. The method includes adjusting the base's azimuth and the angle of incidence of the wind in response to wind direction and speed.

The invention aims at disclosing a mechanism with revolution and autorotation around an orthogonal axis and five types of vertical-lifting devices with combined propellers. Since the combined propellers for generating lifting force are still driven by a main engine, the vertical-lifting device belongs to the series of helicopters, but the principle for generating the lifting force not only includes the part based on the wing theory, but also includes the part based on the Magnus effect, while the structure for generating the lifting force not only has the part that the whole combined propellers carry out revolution around the vertical shaft (fixed shaft), but also has the part that rotary parts in the combined propellers carry out autorotation around a propeller shaft (movable shaft), or utilizes the principle of an anemometer to realize autorotation of the rotary part in the combined propeller. The five types of combined propellers comprise a rotary-drum type, a flap-rod type, a fan-wing plane type, a roller-wing type and a wind-cup type. Each set of vertical-lifting device is provided with the same type of combined propellers, the quantity of the combined propellers is equal to that of propeller shafts arranged on a rotary wing hub and is 2-4. The vertical-lifting device has the beneficial effects that various principles for generating the lifting force are fully utilized, and the length of propellers of the existing helicopter is shortened, so that the strength and the lifting force are improved.

This invention refers to the structure for a ball or ball cover that comprises a plurality of interconnected panels comprising first and second groups of panels which combined form a sphere. The first group of panels define at least two different surface areas of the ball or ball cover disposed at polar extremes on the surface of the sphere and the second group of panels define an area of the surface in the form of a ring, with at least three undulations and disposed in the equatorial zone of the surface of the ball or ball cover, creating a separation between the polar extremes defined by the first group of panels; whereby the width of the ring is modified to improve the sphericity of the ball or ball cover and obtaining a ball of a selected measurement (C).

A wind mitigation system for attachment to a residential or commercial building to mitigate wind suction forces known to damage roof structures, and to harness wind energy to create electricity. The system may comprise one or more rotating cylinders which make use of the Magnus effect, a scientific phenomenon involving air flow over a rotating cylindrical object. Rotating Magnus cylinders are installed on the roof, preferably at or near the roof-wall junction of a building in order to provide the greatest suppression of perpendicular wind forces and resulting vortices. Wind flowing across the Magnus cylinders creates a downward force that is transferred to the roof by structural support brackets. The downward force counters the upward lifting forces generated by high winds so as to prevent uplifting of the roof structure. Electrical energy is generated from oscillations resulting from variations in wind speed.

The invention discloses a high-altitude unmanned plane equipped with a Magnus effect propulsion system, wherein double-fuselage layout is adopted by the high-altitude unmanned plane; wings are mounted on external sides of two fuselages; a Magnus effect propulsion system and an empennage are mounted between the two fuselages; a propeller is mounted on the head of the fuselage; and thin-film solar cells are covered on the upper surfaces of the wings. A Magnus effect rotor can be used as a lifting device in the daytime; under the same flow velocity, the lifting force can be greatly improved by only improving rotation speed of the Magnus effect rotor, so that enough lifting force is provided for the unmanned plane even in low-speed flight, the minimum takeoff speed and the cruising speed of the unmanned plane are reduced and the short takeoff and landing and aerial low-speed cruise investigation of the unmanned plane are facilitated; the Magnus effect rotor can be used as a wind power generation device in the night for generating power by using the high-altitude stable and sustained wind energy, so that the shortage of large wing area or wingspan of the unmanned plane with the sole capability of obtaining solar energy at low energy density in the daytime for storing energy for flight is avoided.

The invention relates to a duct single screw aircraft based on Magnus effect, relating to a duct single screw aircraft. The invention solves the problems of poor safety, complex structure and difficult realization of various flying behaviour control of the traditional coaxial double-screw unmanned aircraft. The invention has the technical scheme that a steering engine duct (I), an airflow regulation duct (II) and a power duct (III) are sequentially communicated; a power device (3) is used for generating spiral airflows in the power duct (III); an airflow regulation device (2) is used for converting the spiral airflows in the power duct (III) into vertical jet-type airflows; and the vertical jet-type airflows regulated in the steering engine duct (I) generate Magnus effect force on the lateral surfaces of a hollow core wheel (11). In the invention, the Magnus effect force generated during the rotation of the hollow core wheel is used as control input, and the aircraft further realizes various flying behaviours. The invention has the advantages of simple and compact structure, low energy consumption, safety, flexible behaviour, and the like.

A vessel includes a hull, a propeller for propulsion of the vessel and at least one rotatable cylinder which in its operational state is vertically mounted on the vessel, the cylinder having a rigid outer surface, a motor drive for rotating the cylinder around a longitudinal axis and a displacement member for displacing the cylinder to an inoperational position, wherein the motor drive is situated inside the cylinder.

The invention provides a novel propelling system based on a magnus effect. The novel propelling system comprises a magnus effect rotor and a task conversion control device, wherein the magnus effect rotor comprises a main rotating shaft, a main rotating drum assembly, a plurality of groups of fan blade assemblies and a fan blade drive assembly, and the task conversion control device comprises a box body, a main linear guide rail slide-block mechanism, an auxiliary linear guide rail slide-block mechanism, a slide-block pulling rod, a main rotating shaft drive mechanism and a power generating mechanism. The magnus effect rotor can be taken as a propelling rotor when thrust needs to be produced and can be switched to a power generation rotor when the thrust does not need to be produced or the wind direction is unfavorable, so that the utilization rate of wind energy is high; the task conversion control device adopts a simple hydraulic actuating manner, fast conversion of tasks for adopting the magnus effect rotor as the propeller or as the power generation rotor can be realized only through one hydraulic cylinder and two linear guide rails, the mechanism is simple, and the propelling system can be taken as a propeller for providing the pushing force or a power generator for storing energy.

The lift and drag performance of all vehicles is strongly influenced by viscous effects, and in turn, laminar separation bubbles. This application employs an effective fluid boundary layer control strategy that reduces parasitic drag, allows for more usable angles of attack, and delays or stops separation. In the approach of this application, the control surface effectively uses the Magnus effect to delay or stop a separation bubble from forming, which can increase lift, reduce drag, and delay degrees of stall by directly manipulating the velocity gradient in the fluid boundary layer.

The invention discloses a wind tunnel-free Magnus effect demonstrating experiment device, which comprises a cylinder turntable, a turntable sliding rail, a turntable support directional moving wheel and a forced rotating shaft, and also comprises a water storage tank, a one-way water inlet tube, an air inlet control valve, a first level splitter plate, a second level splitter plate, a third level splitter plate and a back pressure energy dissipation plate. Compared with the prior art, the wind tunnel-free Magnus effect demonstrating experiment device has the advantages of obvious dynamic effect, high visualization degree, no sound pollution, stable flow state, low cost, small power consumption and small volume, and is suitable to be popularized in a hydraulic power and fluid laboratory of the university, a hydraulic power and fluid laboratory of the research institution and a science palace for popular science education.

A retractable wind energy rotor for ship boosting is composed of a stator, a rotating barrel and a base. The base is placed on supports located on a ship deck. The stator is fixedly mounted on the base. The rotating barrel is connected with the stator and the base through bearings. A drive motor is arranged in the base. The rotating barrel is driven by the drive motor to rotate around the stator.Due to the Magnus effect, the wind energy rotator generates thrust enabling a ship to advance under the function of lateral wind. Two hydraulic cylinders are arranged outside the base, the two ends ofthe hydraulic cylinders are connected with the ship deck and the base correspondingly, and a remote console is arranged in a cab. A hydraulic system is arranged in the base and is controlled to workthrough the remote console located in the cab. The rotor is pushed by hydraulic rods to move around the supports, and therefore the rotor can be put away and released. When the rotor normally rotatesto work, the base of the rotor is locked through a mechanical method, and stable running of the stator is guaranteed.

The invention relates to the use of a drive system working on the basis of the Magnus Effect which is used to provide a drive mechanism in addition to an existing drive device. The aim of the invention is to produce a drive directly in front of the front impacting fluid flow. The invention also relates to the use of a drive system for a relatively fast moving vehicle by means of a first drive system, said drive system comprising a rotating, horizontally arranged cylinder (20) provided with end disks (70) as an additional drive. A fluid flow (F), which is produced by the first drive system, enters into a channel (10) and is diverted (10'') in the direction thereof in said channel whereupon it impinges upon the rotating cylinder (20). The complimentary drive is produced in a desired direction based on the Magnus Effect.

The invention relates to a forward and reverse rotation control and implementation method of a Magnus effect vertical-axis wind turbine rotor. The method comprises a circular rail, a rail car, a cylindrical rotor, a rotor motor, a variable frequency speed adjuster, a speed sensor, a brake, buffer wheel energy storage mechanism, a buffer wheel displacement motor, a wind power sensor, a main controller, rotor direction identifiers and the like. The direction identifiers are arranged in such 36 areas as the circular rail; according to wind power signals, a reversing area of the cylindrical rotor on the rail is set online; after the rotor enters the reversing area, the displacement drives one buffer wheel to contact with the rotor; the rotating energy of the rotor is absorbed; then, the rotor is braked; the other buffer wheel reversely rotated is contacted with the rotor to reversely return the energy to the rotor; and the controller gradually improves the driving frequency through the variable frequency speed adjuster in the reversing area according to reverse rotation initial rotating speed obtained by the rotor, so that the rotor obtains reasonable acceleration to achieve the purpose of reducing the energy consumption in rotor steering.

The invention relates to a novel ice breaking rudder based on the Magnus effect. The novel ice-breaking rudder comprises an inner cylinder and an outer cylinder, wherein the two cylinders are coaxially arranged and are connected together through keys on the inner cylinder surface, and it is guaranteed that the inner cylinder drives the outer cylinder to rotate, and the rotation of the inner cylinder is driven by a motor and can realize clockwise or anticlockwise rotation of the inner cylinder. The motor is arranged between a stern cabin and the inner cylinder and is connected through a universal joint, and a linear bearing is additionally arranged at the part, extending towards the universal joint, of the inner cylinder so as to increase the structural strength. Conical particles are arranged on the surface of the outer cylinder, so that ice blocks at the tail can be well broken, and a propeller can be protected. According to the novel ice-breaking type cylindrical rudder, the Magnus effect is utilized, the generated rudder force is larger, the maneuverability of a ship is improved, the mounting and dismounting are convenient, and a stern shaft frame or a steering column does not need to be dismounted like a traditional rudder. The conical particles on the surface of the rudder column enhance the ice breaking capacity of a stern, and simultaneously protect the propeller.

The invention relates to a Magnus rotor comprising a cylindrical body of revolution for converting wind power into a feed force using the Magnus effect. The Magnus rotor comprises: a rotational shaft about which the body of revolution rotates; a support member on which the body of revolution is mounted; and a body of revolution which has means for the reinforcement thereof. The body of revolution is primed in at least two planes arranged at a mutual spacing in the axial direction perpendicular to the rotational shaft of the body of revolution in order to accommodate balancing weights. The invention further relates to a method for balancing a body of revolution according to the invention.

The invention relates to a variable speed drive control policy for a wheel track cylindrical rotor blade of a vertical axis wind turbine driven by magnus effect. The wind turbine is composed of an annular track, a track trolley, a cylindrical rotor blade, a power generation wheel and corresponding supporting facilities. In a wind field, the cylindrical rotor blade is driven by a variable frequencycontrolled motor to rotate, and the magnus effect generated thereon generates a lift force vertical to the cylindrical rotor and resistance opposite to the wind speed; the rotating direction of the rotor blade is changed at two combined points of upper and lower tuyeres of the annular track, so that the lift force of the rotor blade drives the track trolley to move continuously along the track; the lift force of the blade and the rotating speed of the rotor are in direct proportion and lift force extremity is available; and the benefit of the lift force to the wind turbine and the azimuth angle of the blade have a cosine function relationship. Therefore, the variable speed drive control policy is provided for the rotor blade, the acceleration region of the rotor is prolonged by adopting acosine frequency variable function, the energy consumption of rotor reversing drive is reduced, and the defect that the blade is excessive in energy consumption is overcome.

A vessel includes a hull and a deck, a substantially cylindrical rotor having a peripheral wall rotatable with respect to the deck around a longitudinal center line, the rotor being at a lower end connected to the deck and including an upper end plate, the rotor being mounted on the deck in such a manner that in an operational state the rotor is substantially vertically oriented and in an inoperational state the upper end plate is situated in the vicinity of the deck, the end plate extending transversely to the longitudinal center line, wherein the end plate is provided with movable edge segments that in the operational state of the rotor extend radially outwardly from the peripheral wall to an extended position and in the inoperational state of the rotor are moved to a retracted position that is situated closer to the peripheral wall than the extended position.

The present invention relates to a rotating body (10) for turbines using the Magnus effect with an axis of rotation of the turbine parallel to the direction of the working fluid, wherein it is obtained by an ovoid of construction of Rankine-Fuhrman, arranged with major axis (L RL ) parallel to the axis of rotation of the rotating body (10), said major axis (L RL ) of the ovoid being equal to 10 times the minor axis (D RL ), of the same ovoid, the diameter (D) of said rotating body (10) being variable along the axis of rotation of said rotating body (10) up to a maximum value comprised between 1/5 and 1/6 of the length (L) of said rotating body (10), said ovoid of construction of Rankine-Fuhrmann being divided into four sectors obtained dividing the major axis (L RF ) of the same ovoid into four segments (1, 2, 3, 4) having the same length, the profile of said rotating body being realised, respectively - following the profile of the second and third sectors into which the ovoid of construction of Rankine-Fuhrmann was divided, i.e. the sectors of the ovoid of Rankine-Fuhrmann corresponding to the second (2) and third (3) segments into which the major axis (L RF ) of the ovoid was divided, - following the profile obtained through the combined transposition of the third sector to the second sector into which the ovoid of construction of Rankine-Fuhrmann was divided, so to form two opposing trapezoids, welded along the minor base, or - following the profile obtained through the combined transposition of the fourth sector, i.e. the sector of the ovoid of construction corresponding to the fourth segment (4) into which the major axis (L RF ) of the ovoid was divided, to the first sector, i.e. the sector of the ovoid of construction corresponding to the first segment (1) into which said major axis (L RF ) of the ovoid was divided, so to form an hourglass, wherein the two sectors are connected, at the respective points of maximum curvature, by means of sections of prolated spheroid, i.e. with surfaces of quadrics of rotation with one flap.

The invention provides a Magnus effect rotor utilizing wind energy to generate electricity and produce pushing force. The Magnus effect rotor comprises a main rotating shaft, a main rotating barrel assembly, a plurality of sets of fan blade assemblies and a fan blade driving assembly. A plurality of fan blades evenly distributed around the circumference are installed inside a main rotating barrel, and due to the fact that fan blade folding and unfolding control driving gears are meshed with fan blade folding and unfolding control driven gears in a matched mode, a servo control motor can control all fan blades to stretch into or out of the main rotating barrel at the same time, wherein the fan blade folding and unfolding control driving gears are installed on a servo drive motor, and the fan blade folding and unfolding control driven gears are arranged on the end portions of all fan blade clamping sleeve rotating shafts. When the fan blades are located inside the main rotating barrel, the main rotating barrel is driven by an external motor to rotate, and then large pushing force is produced under the action of incoming flow. When the main rotating barrel is not needed to produce the pushing force, the fan blades stretch out of the main rotating barrel and are driven by wind power to drive the main rotating shaft to rotate so as to drive an external electric generator to generate electricity through the wind power. The rotor not only can serve as a propeller for providing the pushing force, but also can be used for generating the electricity when the pushing force does not need to be provided; the wind energy is fully utilized, and the Magnus effect rotor has high economical efficiency.

The invention provides a Magnus effect demonstration instrument. The Magnus effect demonstration instrument includes a housing supporting structure, and an air supplying mechanism and a swing device are arranged in the housing supporting mechanism, wherein the air supplying mechanism is arranged at the upper portion of the housing supporting structure; the swing device is arranged under the air supplying mechanism; the swing device comprises a cylinder, a first motor, a hoop and a swing rod assembly, and the first motor is arranged in the cylinder and is coaxial with the cylinder so that the cylinder can be driven to rotate coaxially; one end of the hoop is rotatably connected with the motor, and the other end of the hoop is connected with the swing rod assembly. The Magnus effect demonstration instrument has the advantages that the public can know the scientific knowledge about hydromechanics and understand the life phenomena including why a ball will deflect in the motion process in combination with examples in life, and the public are encouraged to love and explore science.