24 results about "Magnus effect" patented technology

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

The invention relates to the technical field of vertical axis wind turbines, in particular to a vertical axis wind turbine based on the Magnus effect, and aims to solve the technical problem that an existing lift force type vertical axis wind turbine is difficult to start in a breeze environment. To this end, the Magnus effect-based vertical axis wind turbine of the present application comprises: a vertical axis; the at least three lifting force blades and the at least three Magnus rotors are connected to the vertical shaft; the driving assembly is used for driving the Magnus rotor; and the control module is electrically connected with the driving assembly and used for controlling starting and stopping of the driving assembly according to the actual wind condition so as to drive the Magnus rotor to rotate, and after the Magnus rotor rotates, the lifting force blades continuously capture wind energy to maintain operation of the vertical axis wind turbine. In this way, the defects that a lift type vertical axis fan is small in starting torque and difficult to start are overcome, and normal starting of the lift type vertical axis fan under the breeze condition is achieved.

To efficiently obtain thrust through the Magnus effect. [Solution] The wind power propulsion device of the embodiment is a wind power propulsion device installed on a ship that generates propulsion force by receiving wind, and comprises a wind turbine sail body that is rotatable about an axis extending vertically from the hull, and a cylindrical lower cylindrical part provided between the hull and the wind turbine sail body, connected to the lower part of the wind turbine sail body, and rotating integrally with the wind turbine sail body.

The invention provides an active yawing single-point mooring floating type fan platform based on the Magnus effect, and belongs to the technical field of offshore wind power. The problem that invalid energy consumption exists when an existing platform is prevented from deviating through a flow guide rudder structure under the condition that ocean current is inconsistent with the wind direction is solved. The wind turbine generator system comprises a wind turbine generator set, a supporting tower, a platform foundation and a single-point mooring device. The top end of the supporting tower is connected with a wind turbine generator set, the bottom end of the supporting tower is connected with the platform foundation, the platform foundation comprises a mooring stand column, a plurality of yaw adjusting stand columns and a plurality of connecting structures, the lower portions of the mooring stand columns are connected with a single-point mooring device, yaw adjusting devices are arranged on the yaw adjusting stand columns, and each yaw adjusting device comprises a rotating body. The rotating speed and the rotating direction of the rotating body can be adjusted, and the rotating body and ocean current act to generate the Magnus effect to generate acting force to drive the platform foundation to rotate around the single-point mooring device. The device is mainly used for improving the power generation efficiency of the fan platform.

The invention discloses a method and system for measuring thrust of a wind power boosting rotor, and the method employs a pressure sensor to measure the dynamic pressure of the surface of the rotor, and directly reflects the Magnus effect. Meanwhile, the high-speed wireless communication technology is used for collecting and transmitting data, vibration influence is avoided, the signal noise is low, and the measurement precision is high. Compared with a traditional pressure measuring device, the pressure sensor is directly installed on the surface of the rotor, the pressure does not need to be conducted to the pressure sensing unit through an air pipe, and the problems of pressure loss, pipeline blockage and the like are avoided. Pressure measurement points are arrayed on the surface of the rotor, pressure scanning is conducted in the circumferential direction, and pressure distribution on the surface of the whole rotor is fed back. Finally, wiring is conducted around the main shaft, parts are integrated on the rotating main shaft, and compared with a complex cable data transmission mode, wireless data collection and transmission under the rotating working condition are achieved; a conductive slip ring does not need to be added to the main shaft, the influence of the rotation state is avoided, and the cable winding problem under the rotation working condition is avoided.

The application discloses a fan load reducing device, system and method based on Magnus effect, which comprises a base, a support, a motor and a plurality of rollers. The base is installed between a tower drum and a base of a fan, and a support for installing the motor is fixed on the base. The plurality of rollers are symmetrically inserted into two sides of the base in two rows, and the rollers on the same side are on the same horizontal plane. Each roller is perpendicular to the main shaft center line of the fan and is driven to rotate by a corresponding motor installed on the support. The rotating roller generates Magnus effect under the action of wind pressure, thereby generating a transverse force, and a part of the load is offset by the transverse force and the external load. The application can effectively reduce the load of the fan without losing power generation, so that a fan with lighter weight can be designed, and the cost of the fan is also reduced.

The application discloses a hovercraft posture stabilizing device based on Magnus effect, which comprises a pipe beam support fixed behind a duct air propeller, a transverse roller assembly and a longitudinal roller assembly which are perpendicular to each other and rotatable are installed on the pipe beam support, the transverse roller assembly comprises left and right rollers which are horizontally installed on the pipe beam support, the longitudinal roller assembly comprises upper and lower rollers which are vertically installed on the pipe beam support, and a motor which drives the left and right rollers and the upper and lower rollers to rotate. When air flow passes through the rollers, a Magnus force which points to the side of the accelerated air flow is generated on the side of the accelerated air flow. When the hovercraft is lowered, the left and right rollers roll clockwise at the same speed, and a downward force is provided to form a counterclockwise pitching moment together with gravity. When the hovercraft is leftwardly deviated, the left and right rollers roll reversely at the same speed, and a rightward rolling moment is provided to restore a good balance state. When the upper and lower rollers rotate at a high speed, the hovercraft is turned.

The invention discloses an electric, long-endurance and simple aircraft, and belongs to the technical field of light aircrafts. 1-2 rotating cylinders are arranged on the front portion and the rear portion of the airfoil respectively and driven by ultralight motors, the upper airfoil is coated with a perovskite photovoltaic cell, electric energy is stored in a super-capacitor cell, and the super-capacitor cell and a quantum cell are connected in parallel to supply power to all electric equipment on the aircraft; the pitching of the airplane is controlled by different rotating speeds of the front and rear rotating cylinders; the left and right wing rotating cylinders are different in rotating speed to control the left and right wing rotating cylinders to tilt, a propeller rear grid plate swings left and right to turn, rotation of the rotating cylinders in the wings interacts with airflow to generate 'Magnus effect' lift force, lift force is generated with traditional wings, and the safety of passengers can be guaranteed; the wings are connected with the cabin through components, are frame-type and detachable, are coated with transparent plastic films, are opened on the upper, lower, left and right sides, can extend two legs of a passenger out of a lower opening cover, carry straps and hold a handle, control the direction of the airplane, run windward and assist the airplane to take off and land, are positioned by a Beidou satellite, and can be driven in an unmanned manner.

The invention relates to the field of micro aircrafts, in particular to an electrostatic aircraft based on Magnus effect, which comprises a central roller, a motor and a rigid shaft, the central roller is used for generating lift force by utilizing the Magnus effect during rotation, and comprises a core frame and roller discs connected to two ends of the core frame; the two motors are located on the two sides of the central roller correspondingly. The rigid shaft is used for connecting the central roller and the motors on the two sides and transmitting driving force of the motors to the central roller. In the working state, torsion force is provided by adjusting the rotating speed difference of the motors on the two sides, rolling and yawing control over the aircraft is conducted, and posture adjustment is achieved. Through double-motor driving and elastic connection structure design, synchronous optimization of efficient lift force generation, flexible attitude control and high redundancy is achieved, and the requirements of the micro aircraft for flight stability, high-speed adjusting capacity and quick response capacity are met.

An experimental apparatus and method for investigating the Magnus effect are disclosed. The base includes a launching mechanism, an air compression mechanism, and an air volume adjustment mechanism. The launching mechanism includes an angle indicator disk with a launching angle adjustment mechanism at its bottom. A launching tube is connected to the center of the angle indicator disk via a power air intake pipe. A suspension seat connected to the wall of the launching tube is located inside the launching tube above the power air intake pipe. An air guide pipe is located at the center of the suspension seat, and the upper end of the power air intake pipe is inserted into the air guide pipe. The launching object is placed on the suspension seat. A suspension air intake pipe is located on the lower side wall of the power air intake pipe. A left-handed and a right-handed air intake pipe, symmetrical about the centerline, are located in the middle of the side wall of the launching tube. A reflective photoelectric speed sensor is installed on the side wall of the launching tube below the right-handed air intake pipe. The air compressor is connected to the left-handed and right-handed air intake pipes, the power air intake pipe, and the suspension air intake pipe via the air volume adjustment mechanism. This invention clearly and intuitively demonstrates the principle of the influence of the Magnus effect on the flight trajectory of the launching object.

The application discloses a kind of wind force boost rotor thrust measurement method and system, adopt pressure sensor measurement rotor surface dynamic pressure, directly react magnus effect.Meanwhile, using high-speed wireless communication technology acquisition transmission data, not by vibration, signal noise is low, measurement precision is high.Compared with traditional pressure measurement equipment, the application directly installs pressure sensor on rotor surface, without using air pipe to conduct pressure to pressure sensing unit, without pressure loss, pipeline blockage and other problems.The application is in rotor surface array pressure measurement point, along the circumferential direction pressure scanning, feedback entire rotor surface pressure distribution.Finally, wiring is carried out around main shaft, by integrating parts on rotating main shaft, compared with complex cable data transmission mode, wireless acquisition and transmission of data under rotating working condition are realized;And without increasing conductive slip ring on main shaft, not by rotating state, avoid cable winding problem under rotating working condition.

The invention provides a rotating cylinder sail and a ship, and relates to the technical field of ships, the rotating cylinder sail comprises a rotating cylinder installed on a ship body, a plurality of blades are arranged on the periphery of the rotating cylinder in the circumferential direction at intervals, the spanwise direction of each blade is parallel to the radial direction of the rotating cylinder, the rotating cylinder rotates in the axial direction and drives the blades to rotate synchronously, and an orthogonal bevel gear assembly is installed in the rotating cylinder; the orthogonal bevel gear assembly is in transmission connection with the blades and used for driving the blades to synchronously rotate in the spanwise direction so as to reduce an airflow channel on the downwind side of the rotary cylinder and increase an airflow channel on the upwind side of the rotary cylinder, and therefore the air speed and pressure on the downwind side of the rotary cylinder are increased, and the air speed and pressure on the upwind side of the rotary cylinder are reduced. The near-wall flow on the surface of the rotating cylinder is effectively shaped, separation is delayed, attachment is more stable, the circular rector generated by the Magnus effect is remarkably increased, a higher lift coefficient and a better lift-drag ratio are obtained under the same incoming flow condition, and the continuity and predictability of propelling force output are improved.

The invention provides an unmanned ship stabilization device based on a bionic dynamic variable diameter ratio and an optimization method aiming at the comprehensive performance improvement requirement of an unmanned ship rotary column stabilizer under a full-speed working condition. According to the method, a lift-drag integrated model fusing the Magnus effect and a variable diameter ratio parameter is established, and a three-layer collaborative bionic variable diameter ratio function is innovatively constructed on the basis: a basic form layer guarantees basic lift characteristics by referring to a plant stem macroscopic form, and a main fluctuation layer simulates a bamboo joint mesoscopic periodic structure to optimize flow characteristics; insect wing vein micro-textures are introduced into the high-frequency fluctuating layer to achieve fine control over the boundary layer. And a multi-dimensional reward objective function including smoothness, bionic types, variation amplitude, surface fluctuation and a variable diameter ratio range is further proposed, and full-speed optimal shape design is realized by combining multi-algorithm collaborative optimization. Through simulation verification, the method has the advantages that the full-speed average lift force is increased by 53.3%, the full-speed average lift-drag ratio is increased by 28.9%, and the full-speed adaptability and stability of the unmanned ship stabilization device are effectively enhanced.

This application provides a rotary sail and a ship, relating to the field of marine technology. It includes a rotary sail installed on the hull, with several blades spaced circumferentially around its outer periphery. The spanwise direction of each blade is parallel to the radial direction of the rotary sail. The rotary sail rotates axially, driving the blades to rotate synchronously. An orthogonal bevel gear assembly is installed inside the rotary sail, and is connected to the blades for transmission. This assembly drives the blades to rotate synchronously along the spanwise direction, reducing the airflow channel on the downwind side of the rotary sail and increasing the airflow channel on the upwind side. This results in increased wind speed and decreased pressure on the downwind side of the rotary sail, and decreased wind speed and increased pressure on the upwind side. The near-wall flow on the rotary sail surface is effectively shaped, separation is delayed, adhesion is more stable, and the circulation generated by the Magnus effect is significantly increased. Under the same incoming flow conditions, a higher lift coefficient and a better lift-to-drag ratio are obtained, improving the continuity and predictability of propulsion output.

The invention provides a single-point mooring floating type fan active yaw control method based on the Magnus effect, and belongs to the technical field of offshore wind power. A wind direction angle is obtained in real time through a wind direction sensor, and the deviation between the wind direction angle and the azimuth angle of a platform main shaft is judged by combining the wind direction angle with the azimuth angle; the system calculates the average wind direction in a set time window so as to suppress the influence of high-frequency wind direction disturbance; the controller dynamically calls a model predictive control (MPC) algorithm according to wind direction deviation, outputs target rotating speeds of the two yaw control devices, and generates stable lift force perpendicular to the incoming flow direction to drive the platform to rotate around a single-point mooring point, so that active wind facing is achieved; the method is matched with a yaw control device, accurate and rapid attitude control can be achieved, and the wind facing capacity and the structural stability of the draught fan are remarkably improved; and the water ballast tank and the variable pitch system can be linked, the adaptability of the platform under the extreme sea condition is enhanced, and the platform has good robustness and engineering feasibility.

The application discloses an object motion estimation and tracking method and device based on adaptive Kalman filtering, first, kinematics analysis is carried out based on the wind resistance, rotation and Magnus effect of a flying ball, and a motion equation of the flying ball is accurately established; then, an adaptive Kalman filtering algorithm is designed to solve the motion equation, that is, convolution features are extracted through an FCOS algorithm, a flying ball dynamic tracking is realized based on a KCF tracker, a target three-dimensional pose is reconstructed through a camera projection model and input into an adaptive Kalman filter, the flying ball motion equation is solved, and the robustness to measurement noise and modeling error is improved; finally, aiming at the problem of autonomous field of view loss, a PWC-Net dense optical flow method is designed to realize autonomous field of view dynamic maintenance, support fast and accurate self-perception motion estimation and tracking of the flying ball, and effectively overcome the loss rate and hysteresis of the flying ball tracking.

To efficiently obtain thrust through the Magnus effect. [Solution] The wind power propulsion device of the embodiment is a wind power propulsion device installed on a ship that generates propulsion force by receiving wind, and comprises a wind turbine sail body that is rotatable about an axis extending vertically from the hull, and a cylindrical lower cylindrical part provided between the hull and the wind turbine sail body, connected to the lower part of the wind turbine sail body, and rotating integrally with the wind turbine sail body.

The present application relates to a method for quickly solving the circulation of airfoils controlled by Magnus and Coanda effect, comprising: determining the circulation of the airfoil without control; studying the increased circulation of the airfoil when the rotation of the rotating body at the tail of the airfoil produces the Magnus effect, and determining it through CFD; studying the increased circulation of the airfoil when the Coanda effect is produced by blowing alone, and determining it through CFD; studying the gain circulation of the airfoil when the rotation of the rotating body at the tail of the airfoil and blowing simultaneously act, and determining it through CFD; determining the total circulation Γ according to the sum of the circulation, the increased circulation, the increased circulation and the gain circulation 总 According to the Joukowski lift formula, the predicted lift is obtained. The present method uses CFD data, combines classical potential flow theory and traditional physical principles, simplifies the relationship between variables, and can greatly improve the prediction efficiency of the controlled flow field, and has strong engineering application value.

The utility model relates to an aerial mooring system which comprises a rotor, a main shaft and a driving unit. The rotor has buoyancy, the buoyancy can balance the dead weight of the system, and the rotor can freely rotate around the main shaft under stress; the two ends of the main shaft are symmetrically connected to a high-altitude acting module, and the driving unit is used for adjusting the rotating speed and / or the rotating direction of the rotor; and the total counter weight of the rotor and the driving unit is symmetrically distributed on the main shaft. According to the scheme, the Magnus effect serves as the principle, any needed lift force can be obtained by adjusting the rotating speed and / or the rotating direction of the rotor, the lift force, the lift-drag ratio and the traction angle of the air mooring system can be flexibly controlled, and the air mooring system is not limited by the altitude. Compared with traditional mooring systems such as helium balloons, the situation that the lift-drag ratio is reduced due to the increase of the altitude or the increase of the wind speed is avoided, and the situation that the traction angle cannot be controlled is avoided.

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

The invention discloses a marine rotor sail with array airfoils, and belongs to the technical field of sail boosting ships. Aiming at the problem of low aerodynamic efficiency caused by surface airflow separation and end vortex of a traditional rotor sail, a plurality of array airfoils are uniformly arranged on the periphery of a rotor main body, an end plate with a flow guide groove is arranged at the top, and a Magnus effect is enhanced and airflow separation is delayed by utilizing a circular rector superposition effect generated by the airfoils; and meanwhile, an end flow field is reconstructed through the flow guide grooves, vortex energy loss is restrained, and the aerodynamic performance and the lift force characteristic of the rotor are remarkably improved. According to the structure, the adaptability of the sail under various wind direction conditions is effectively improved, a better boosting effect can be provided under the same energy consumption, and the sail is suitable for an efficient propulsion system of a modern green ship and has a good engineering application prospect.

The invention provides a ship stabilization and land propulsion integrated system based on the Magnus effect, and belongs to the technical field of ship engineering. The problems of complex structure, large occupied space, high maintenance cost and the like caused by mutual independence of a special ship land propulsion system and a stabilization system are solved. The device is arranged on the two sides of an external ship body and comprises a Magnus device, a mode conversion device, a detection system and a control system, the mode conversion device is connected with the side wall of the external ship body and comprises a horizontal moving mechanism and a mechanical arm mechanism, one end of the mechanical arm mechanism is connected with the horizontal moving mechanism, and the other end of the mechanical arm mechanism is connected with the Magnus device. The detection system is installed on an external ship body, electrically connected with the control system and used for collecting and feeding back signals, and the control system is installed on the external ship body, electrically connected with the mode conversion device and the Magnus device and used for sending out commands. The device is mainly used for manufacturing amphibious ships or special ships.

The invention relates to the field of aviation, and more particularly to vertical take-off and landing aircraft. The present Magnus-effect aircraft consists of a body having air intakes in the front and rear parts thereof. Inside the body, cylinders are rotatably mounted along the perimeter. Also inside the body, the front and rear parts each contain a zone for the intake of air and the distribution of thrust to the cylinders, said zone having two impellers disposed therein at the top and bottom, respectively. Disposed along the perimeter, at the top and bottom, respectively, are flow guides in the form of ducts leading to the cylinders. The device is further equipped with a cockpit having an aircraft control system, as well as with at least two propulsion engines in the form of a nozzle with a flow propeller mounted on a shaft therein, the propeller having blades that are twisted around the shaft. Each blade is in the form of a quarter of a torus shaped into a spiral with a variable pitch. The inside walls of the nozzle have spiral grooves in which the trajectory of the air flow changes from a spiral air flow to a straight air flow. The result is an increase in the manoeuvrability and flight range of the aircraft.

A system takes advantage of the Magnus effect to increase the efficiency of a moving structure by increasing the forces generated by a fluid moving relative to the structure, e.g., to improve lift, drag, etc. The system includes a structure having a first side and a second side opposite the first side. An object coupled to the structure, e.g., a cylinder, is exposed to a fluid such as air. The object is journaled for rotation relative to the structure so as to disrupt the fluid around the object. A drive source causes the object to rotate relative to the structure so as to cause a select one of an upward lift, or a downward drag.