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1307results about "Ornithopters" patented technology

Flapping wing device for achieving active torsion for flapping wings and wing planes of aerofoil

InactiveCN103241379ASimple and lightweight designAchieve active twistOrnithoptersFlapping wingFlight vehicle
The invention discloses a flapping wing device for achieving active torsion of flapping wings and wing planes of an aerofoil, and belongs to the field of bionics flapping wing flight driving devices. The flapping wing device comprises a flapping wing swing rod, two spherical hinge pins, an aerofoil torsion connecting rod, a driven conical gear, an aerofoil torsion crank, a right side flapping wing connecting rod, a right side flapping wing crank, a right side flapping wing straight gear, a left side flapping wing straight gear, a left side flapping wing crank, a left side flapping wing connecting rod, a speed reduction gear, a motor output gear, an electromotor, two aerofoil frameworks, two rotary pairs and two moving pairs. A flapping flight vehicle by adopting the flapping wing device can achieve wing plane flapping and torsion flight of wings at the same time without installing an additional torsion driving motor and a matched drive device thereof for the wings on two sides, and the driving device is integrally simple to design and is light in weight, so that the flapping flight vehicle can obtain great lifting force and push force; and the maneuverability of the flight vehicle is improved to a certain degree.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Multi-freedom degree bird-like flapping wing air vehicle

The invention relates to a multi-freedom degree bird-like flapping wing air vehicle. The multi-freedom degree bird-like flapping wing air vehicle comprises a driving mechanism, two twisting mechanisms, an empennage mechanism, two flexible joint structures and a machine frame. The multi-freedom degree bird-like flapping wing air vehicle is simple and compact in structure, and fully-symmetrical flapping wing movement can be realized. Two rubber flexible grooved mechanisms are arranged, so that the flapping wing air vehicle can fly like a bird; flapping wings are curved and folded, so that when the flapping wings flap upwards, a stressed area is reduced, and the resistance is reduced; when the flapping wings flap downwards, the wing extending area is the largest; besides, outer wings can also be passively bent in a flight direction by air resistance, so that great lifting force and great thrust are generated; steering engines are adopted to control inner wing rods so as to change the elevation angle of the flapping wings, the multi-freedom degree bird-like flapping wing air vehicle conforms to the effect that upward flapping resistance is less than downward flapping lifting force in aerodynamics, and the aerodynamic efficiency is improved; the two steering engines are utilized to control the deflection of the empennage, so that operating and controlling of the flight attitude of the flapping wing air vehicle are facilitated. The multi-freedom degree bird-like flapping wing air vehicle disclosed by the invention can be used in the fields of models, aerial photography monitoring, information collecting, disaster searching and rescuing, airport bird expelling and the like.
Owner:CIVIL AVIATION UNIV OF CHINA

Cylindrical cam flapping wing driving mechanism

The invention discloses a cylindrical cam flapping wing driving mechanism. A motor is fixed on a rack and drives a driving gear of a gear speed reduction device; a driven gear of the gear speed reduction device is coaxially and fixedly connected with a transmission shaft; the rack is fixedly connected with a guide rail which is parallel with a transmission shaft; the guide rail is internally provided with a connecting rod which can slide; one end of the connecting rod is articulated with a sliding plate, and the other end of the connecting rod is fixedly connected with a strut; a cylindrical cam is coaxially and fixedly connected at the outer side of the transmission shaft; one or more cycles of periodic curves are wound on the circumference of a cam slot; the sliding pate can slide in the cam slot; a swinging rod mechanism comprises two swinging arms, the middle part of each swinging arm is articulated with swinging arm shafts which are fixedly connected at two sides of the guide rail; one end of each swinging arm is provided with a sliding chute; the strut can slide in a reciprocating mode along the slide chute, and the other end of each swinging arm is connected with a flappingwing beam. By utilizing the mechanism provided by the invention, the complex plane flapping type can be realized, the structure is simple, the weight is light, the reliability is high, complex control is not required, and the mechanism is applicable to a micro flapping aircraft.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Flapping rotor wing design method and microminiature flapping rotor wing designed according to the method

The invention provides a method for driving flapping wings to rotate by thrust produced by the flap of the flapping wings instead of driving by an electric motor, and the method combines with flapping wing and rotary wing technology. An aircraft designed by the method of the invention comprises the flapping wings, an electromagnetic driving mechanism, a connecting shaft, a roller bearing, a power supply, useful load, an electric steering engine, control surfaces, an undercarriage, a controller, an aircraft shell, a slip ring and an electric brush, wherein the electromagnetic driving mechanism drives a pair of flapping wings to flap up and down. The aircraft shell is connected with a rotary connecting shaft through the roller bearing, three control surfaces are evenly distributed at the lower part of the aircraft shell, and simultaneously the control surfaces have the function of the undercarriage of the aircraft. The flapping rotary wings of the invention have high pneumatic efficiency and can satisfy the mission and requirements of vertical takeoff and landing and hovering stopping of the aircraft. Simultaneously, the rotation of the flapping wings of the aircraft is a self-driven rotation, and the rotation is not offset by a torsion resisting mechanism which is added additionally. The aircraft has the advantages of simple design structure, light weight and high flight efficiency and is suitable for miniaturization aircraft design requirements.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Bionic wing-flapping and bouncing multi-mode movement robot

ActiveCN104015828ASymmetricalImprove autonomous take-off capabilityOrnithoptersRatchetGear drive
The invention discloses a bionic wing-flapping and bouncing multi-mode movement robot which comprises a rack, a bouncing mechanism, a wing-flapping mechanism and a driving mechanism, wherein the bouncing mechanism, the wing-flapping mechanism and the driving mechanism are arranged on the rack. The bouncing mechanism comprises feet, a folding mechanism, a torsional spring frame and a winch wheel. The wing-flapping mechanism comprises two wing mechanisms and two tail wing mechanisms, wherein the two wing mechanisms and the two tail wing mechanisms are respectively symmetrical in a left-right mode. The driving mechanism comprises a driving motor, a gear transmission mechanism and a ratchet mechanism. The gear transmission mechanism comprises an input gear and an output gear meshed with the input gear. The output gear comprises a tooth-incomplete gear, a crank gear connected with a crank, and a winch wheel gear connected with the winch wheel. The crank gear is meshed with the half side, with complete teeth, of the tooth-incomplete gear, and the winch wheel gear is meshed with the half side, with incomplete teeth, of the tooth-incomplete gear. The driving mechanism with the single motor drives the wing mechanisms and the bouncing mechanism to work, the complexity and the whole mass of the robot are effectively reduced, and the feasibility of the multi-mode movement robot is improved.
Owner:SOUTHEAST UNIV

High-frequency flapping-wing bionic insect aircraft with controllable passive torsion

The invention provides a high-frequency flapping-wing bionic insect aircraft with controllable passive torsion. The high-frequency flapping-wing bionic insect aircraft comprises an aircraft body framework, and a hollow cup power motor, a crank rocker transmission mechanism, a speed reduction gear group, bionic flapping wings, a controllable passive torsion mechanism and a ball bearing group which are arranged on the aircraft body framework, wherein the crank rocker transmission mechanism converts rotation of an output shaft of the hollow cup power motor into reciprocating flapping motion of the two flapping wings, to simulate flying of insects; the speed reduction gear group is used for lowering the rotating speed of the output shaft of the hollow cup power motor, so that the flapping action of the flapping wings finally keeps in a range; the controllable passive torsion mechanism ensures that the flapping wings can be twisted around rotating shafts, to generate uplifting force; meanwhile, repelling force between a limiter and an electromagnet makes the flapping wings return to the vertical positions. By the adoption of the ball bearing group, the crank rocker transmission mechanism and the controllable passive torsion mechanism, the aims of greatly reducing the transmission friction and effectively converting the power into lift force of the aircraft are fulfilled.
Owner:SHANGHAI JIAO TONG UNIV

Bionic aircraft

The invention discloses a bionic aircraft. Series parallelogram telescopic main wings (2, 3) are symmetrically assembled on the left and the right above a body (1), bidirectional parallel parallelogram telescopic flat tail wings (4) are assembled in back of the body (1), undercarriage shock absorbers (40, 41, 42) arranged in three points are assembled below the body (1), undercarriage wheels (5, 6, 7) are assembled at one end of each of the shock absorbers (40, 41, 42) respectively, a driving cabin (8) and a safety umbrella cabin (9) are assembled above the body (1), the driving cabin (8) is positioned in front of the safety umbrella cabin (9), a solid rocket jato (10) is assembled at the lower gravity center position of the body (1), and the central axis of the solid rocket jato (10) and the central axis of the body (1) form an included angle of 10 to 15 degrees downwards. A nozzle faces to the lower rear part, a nose (11) is assembled in front of the body (1), and a power transmission mechanism and an operating system are assembled in the body (1). Because of the adoption of a bionic technology, the aircraft can simulate various flying postures of birds; the amplitude and frequency modulation transmission mechanism is favorable for rising, landing and flying of the aircraft; by adopting human-machine hybrid power, the aircraft has no pollution; because of good folding property of main rings, the aircraft is convenient for transportation; and the aircraft can be used for sports, escape, downhill race, patrol and the like.
Owner:姚金玉
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