All-electric, manned short takeoff and landing ornithopter with retractable soft flapping wings

Abstract

A fully electrically powered and manned short take-off and landing ornithopter with retractable soft flapping wings, characterized in that it comprises a fuselage, a cockpit, two main flapping wings, two auxiliary flapping wings, a tail wing, two rudder rotors, two tail rotors and ground driving devices.

Description

Technical area

[0001] The present invention relates to the technical field of manned aircraft, in particular to a purely electrically powered and manned short takeoff and landing ornithopter with retractable soft flapping wings. State of the art

[0002] Existing fixed-wing aircraft on the market have demanding space requirements, high noise levels, high energy consumption, complex structures, and high construction costs. Existing rotary-wing aircraft exhibit very low aerodynamic efficiency, poor flight stability, and poor interference suppression performance. This has a major impact on the deployment of rotary-wing aircraft.

[0003] The ornithopter is a bionic aircraft that utilizes the principle of aerodynamic force generated by imitating natural flying creatures. Its distinctive feature is that it can utilize the ideal bionic effect to achieve greater lift through lift mechanisms such as capturing wake airflow, thus saving energy. Its aerodynamic efficiency is higher than that of fixed-wing and rotary-wing aircraft while being small. However, ornithopters currently have difficulty taking off and still require a lot of space for ground travel. In addition, the degree of bionics is low, and the flapping wings cannot fold and flap up and down like bird wings.

[0004] Therefore, the questions of how to achieve short-distance takeoffs and landings and stable flight under existing technical conditions and how to use electrical energy to solve the problem of high fuel energy consumption are problems that need to be urgently solved by the experts in this field. Content of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned technology and to provide a purely electrically powered and manned short take-off and landing ornithopter with retractable soft flapping wings.

[0006] A purely electric-powered and manned short takeoff and landing ornithopter with retractable soft flapping wings, comprising a fuselage, a cockpit, two main flapping wings, two auxiliary flapping wings, a tail wing, two side rotors, two tail rotors and ground landing gear.

[0007] The cockpit is located at the top of the front of the fuselage; the two main flapping wings are located on either side of the fuselage and behind the cockpit; the two auxiliary flapping wings are located on either side of the fuselage and below the rear ends of the main flapping wings; the tail wing is located at the rear of the fuselage; the two side rotors are located on either side of the fuselage and below the main flapping wings; the two tail rotors are located at the rear of the fuselage and on either side of the tail wing, and the ground landing gear is located on the lower side of the fuselage.

[0008] The main flapping wings are retractable wings that can be retracted and stowed on both sides of the fuselage. The top of the fuselage behind the cockpit is equipped with symmetrically arranged stowage compartments, and each of the stowage compartments houses a set of retractable wings. The retractable wing comprises a flapping wing frame that can be folded and opened. The flapping wing frame is equipped with a soft flapping wing covering fabric, the soft flapping wing covering fabric being able to follow the folding or opening of the flapping wing frame. Between the fuselage and the stowage compartment there is a drive device that controls the stowage compartment by vibration to store the retractable wing.

[0009] Furthermore, the flapping wing frame is equipped with a first drive motor mounted in the storage space, wherein a driving wheel is connected to the output shaft end of the first drive motor, and an arcuate tooth plate is engaged with the top of the driving wheel.

[0010] The arcuate tooth plate is located on the bottom of the flapping wing frame, the lateral movable keel is fixedly connected to the top of one end of the arcuate tooth plate, and a plurality of middle movable keels are located on the top of the arcuate tooth plate and arranged between the lateral fixed keel and the lateral movable keel; the top of the arcuate tooth plate is provided with an arcuate groove, and the bottom of the middle movable keel is provided with a sliding member located in the arcuate groove; the soft flapping wing covering fabric is fixed to the lateral fixed keel, a plurality of middle movable keels, and the lateral movable keel, respectively.

[0011] The advantages of the present invention compared with existing technology are as follows: the present invention has a reasonable and compact structure, convenient operation, and easy to manufacture; it features retractable soft flapping wings that are also capable of flapping up and down during flight; the left and right flapping wings can be folded and retracted according to flight requirements, and have a compact structure when folded, making it convenient for driving and parking on the ground; the tail wing adopts a retractable soft wing, which facilitates attitude adjustment; the rotor system enables short takeoffs and landings with comfortable mid-air transitions and free flight and stopping; pure electric power makes this product environmentally friendly, energy-saving, and silent in operation.The structure uses titanium alloy and carbon fiber, which can significantly reduce energy consumption costs during operation and use; with novel appearance and strong market influence, it can replace existing aircraft and ground vehicles and be widely used in many fields such as traffic, travel, entertainment, leisure, competition, transportation, and military. Short description of the drawings Fig. Figure 1 is a first three-dimensional schematic representation of the present invention; Fig. Figure 2 is a second three-dimensional schematic representation of the present invention; Fig. 3 is a schematic diagram of a folded state of the main flapping wings of the present invention; Fig. 4 is a schematic representation of a framework structure of the present invention; Fig. 5 is a schematic representation of an arcuate telescopic keel device on the underside of the main flapping wing of the present invention; Fig. 6 is a schematic diagram of a framework structure of the rear wing of the present invention. Detailed description of the preferred embodiments

[0012] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0013] A purely electrically powered and manned short takeoff and landing ornithopter with retractable soft flapping wings, as in the Fig. 1 to 3, comprises a fuselage 1, a cockpit 2, two main flapping wings 3, two auxiliary flapping wings 4, a tail wing 5, two side rotors 6, two tail rotors 7 and ground landing gear 8.

[0014] The cockpit 2 is located on top of the front end of the fuselage 1; the two main flapping wings 3 are located on both sides of the fuselage 1 and behind the cockpit 2; the two auxiliary flapping wings 4 are located on both sides of the fuselage 1 and below the rear ends of the main flapping wings 3; the tail wing 5 is located at the rear end of the fuselage 1; the two side rotors 6 are located on both sides of the fuselage 1 and below the main flapping wings 3; the two tail rotors 7 are located at the rear of the fuselage 1 and on both sides of the tail wing 5, and the ground landing gear 8 is located on the lower side of the fuselage 1.

[0015] The main flapping wings 3 are, as in Fig. 4, retractable wings that can be retracted and stowed on both sides of the fuselage 1, wherein the top of the fuselage 1 behind the cockpit 2 is equipped with symmetrically arranged stowage compartments 9 and each of the stowage compartments 9 accommodates a set of retractable wings; the retractable wing comprises a flapping wing frame 301 that can be folded and opened, the flapping wing frame 301 is equipped with a soft flapping wing covering fabric 10, the soft flapping wing covering fabric 10 being able to follow the folding or opening of the flapping wing frame 301; between the fuselage 1 and the stowage compartment 9 there is a drive device that controls the stowage compartment 9 by vibration to support the retractable wing.

[0016] The flapping wing frame 301 is equipped with a first drive motor 11 mounted in the storage space 9, wherein a driving wheel 12 is connected to the output shaft end of the first drive motor 11, and an arcuate tooth plate 13 is engaged with the top of the driving wheel 12.

[0017] The flapping wing frame 301 includes a lateral fixed keel 3011, a plurality of central movable keels 3012, and a lateral movable keel 3013; the lateral fixed keel 3011 is fixedly connected to a storage space 9, the storage space 9 being provided with a rotation axis 302 located at the rotation center of the central movable keels 3012 and the lateral movable keel 3013; a plurality of central movable keels 3012 and the lateral movable keel 3013 are rotatably connected to the rotation axis 302.

[0018] The main flapping wings 3 adopt a folding mode in the left and right direction of the flapping wings, ie folding on both sides, as in Fig. 3, which is a side folding mode of the main flapping wings 3, which is able to reduce the space occupied when driving or parking on the ground.

[0019] The underside of the main flapping wing 3 is, as shown in Fig. 5, is also provided with an arcuate telescopic keel device, the arcuate telescopic keel device comprising a plurality of nested and connected arcuate telescopic rails 17; the arc shape of each arcuate telescopic rail 17 is a concentric circular arc, the center of the circle being the axial center of the rotation axis 302; each arcuate telescopic rail 17 is correspondingly provided with keel connecting pieces 21 which can slide on the arcuate telescopic rail 17 and be connected to the side fixed keel 3011, a plurality of middle movable keels 3012 and the side movable keel 3013; one end of the outermost arcuate telescopic rail 17 of the arcuate telescopic keel device is fixedly connected to the storage space 9.

[0020] The rear wing 5 comprises, as shown in Fig.6, a rear wing mounting box 501 connected to the fuselage 1, wherein a second drive motor and two sets of rear wing keels 502 are mounted in the rear wing mounting box 501 and are pivotally connected to the same point in the rear wing mounting box 501; the underside of the rear wing keels 502 are provided with arcuate toothed rails 503, wherein the two arcuate toothed rails 503 each engage with an output gear 504 on the underside at the adjacent end of the two arcuate toothed rails 503.

[0021] The output end of the second drive motor is connected to a driving gear 12, with an output gear 504 on the underside of one of the curved toothed rails 503 directly engaging the driving gear 12 at the output end of the second drive motor, and an output gear 504 on the underside of the other curved toothed rail 503 being connected to the driving gear 12 at the output end of the second drive motor via a transmission gear 18. The rear wing keels 502 are provided with a soft flapping wing covering fabric 10, and the movement of the two curved toothed rails 503 in opposite directions is controlled by the rotation of the second drive motor to realize the retraction and extension of the rear wing 5 and to change the size of the area of ​​the rear wing 5, which is better adapted to the requirements of the flight condition. The multirotor system of the present invention, i.e.The combination of side rotors 6 and tail rotors 7 supports the takeoff and landing process. In particular, in the short takeoff state, the first drive motor 11 of the folded main flapping wing 3 controls the movement of the arcuate tooth plate 13, thus controlling the unfolding of the entire flapping wing. The side rotors 6 are rotated and released from the rotor compartments and activated to give an upward tendency of the entire aircraft. At the same time, the tail rotors 7 are rotated and extended and activated to cause the entire aircraft to move forward, so that the short takeoff can be realized and the flight mode can be activated. When landing, the side rotors 6 are rotated and released to achieve a short landing. During normal flight, the side rotors 6 are retracted, and the tail rotors 7 can also be closed to enter a flapping flight state.

[0022] In the implementation of the invention, the appearance can be sprayed with colors, and when it flies in the air, it is as colorful as the appearance of a bird.

Claims

[1] Purely electrically powered and manned short take-off and landing ornithopter with retractable soft flapping wings, characterized by that it comprises a fuselage, a cockpit, two main flapping wings, two auxiliary flapping wings, a tail wing, two side rotors, two tail rotors and ground landing gear. [2] A purely electrically powered and manned short take-off and landing ornithopter with retractable soft flapping wings according to claim 1, characterized by that the flapping wing frame is equipped with a first drive motor mounted in a storage space, wherein a driving wheel is connected to the output shaft end of the first drive motor, and an arcuate tooth plate is engaged with the top of the driving wheel. [3] Purely electrically operated and manned short take-off and landing ornithopter with retractable soft flapping wings according to claim 2, characterized bythat the laterally movable keel is rigidly connected to an air deflector keel which follows the laterally movable keel to rotate about an axis of rotation. [4] Purely electrically operated and manned short take-off and landing ornithopter with retractable soft flapping wings according to claim 1, characterized by that the drive device of the main flapping wings is supplied with purely electrical energy and driven by hydraulic pressure and gear transmission, whereby the principle of leverage is used to drive the flapping wings to move up and down. [5] Purely electrically operated and manned short take-off and landing ornithopter with retractable soft flapping wings according to claim 3, characterized bythat the underside of the main flapping wing is also provided with an arcuate telescopic keel device, the arcuate telescopic keel device comprising a plurality of nested and connected arcuate telescopic rails; the arc shape of each arcuate telescopic rail is a concentric circular arc, the center of the circle being the center of the axis of rotation; each arcuate telescopic rail is correspondingly provided with keel connecting pieces which can slide on the arcuate telescopic rail and can be connected to a lateral fixed keel, a plurality of middle movable keels and a lateral movable keel; one end of the outermost arcuate telescopic rail of the arcuate telescopic keel device is fixedly connected to the stowage space, and one end of the innermost arcuate telescopic rail is connected to the air deflector keel. [6] A purely electrically powered and manned short take-off and landing ornithopter with retractable soft flapping wings according to claim 1, characterized by that the rear wing comprises a rear wing mounting box connected to the fuselage, wherein the rear wing mounting box carries a second drive motor and two sets of rear wing keels which are pivotally connected to the same point in the rear wing mounting box; the underside of the rear wing keels is provided with curved toothed rails, the two curved toothed rails each engaging an output gear on the underside at the adjacent end of the two curved toothed rails.

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