CN101020503A - Hinged wing type lift force generator - Google Patents

Abstract

A articulated-wing lift generating device belongs to the field of flapping-wing aircraft. It fixes two sets of assemblies with the same structure axisymmetrically, and each set of assemblies is composed of drums, fins, hinged shafts, fairings, end plates, bearings and shafts. Among them, 4 or 6 articulated shafts are evenly distributed on the outer circumference of the drum, and are fixedly connected with a generatrix edge of the arc-shaped fins with a wrap angle of 90° or 60° respectively; when the arc-shaped fins are surrounded It can tightly surround the drum, and when the drum rotates in the bearing on the end plate of the arc-shaped fairing with a wrap angle of 90°-120° by means of the rotating shaft, the arc-shaped fins can move along the drum under the action of centrifugal force. The wheels extend radially outward and move the air downward, creating lift. The present invention has higher efficiency than flapping wings which are fanned up and down, the structure is also simpler than that of the link mechanism, and the operation is more reliable. Its principle and structural form can also be used as propellers for water vehicles.

Description

Articulated wing lift generating device

technical field

The utility model relates to an articulated-wing lift generating device, which belongs to the field of flapping-wing aircraft. Its principle and structural form can also be used as propellers for water vehicles.

Background technique

Human beings long to imitate birds to fly alone and freely in the sky, but they have realized their own flying desires in a different way—all effective flying machines do not have flapping wings (flapping wings) like birds, but Developed based on the constantly improving "wing theory". The history of human research on "bionic flight" is full of hardships and failures, and some people assert that it is impossible for human beings to fly with the help of flapping wings. Despite this, modern people who have overcome various technological difficulties are still unwilling to give up "bionic flight". In their view, only the flight of birds is personalized, and it does not need modern airports, long and solid runways, and huge logistical support. When you use "ornithopter" and "ornithopter" to search Chinese and foreign patent databases, a large number of relevant application documents will be displayed in front of your eyes; the media has also reported some large or miniature prototypes, such as: September 2006 China Aviation Information Network once reported that "Canada has achieved manned orthopter flight. The orthopter for this test flight is numbered C-GPTR. It carried out three taxiing tests on July 8 of the same year, and during the last taxiing process Take off from the ground was achieved and maintained. When the aircraft reached a taxiing speed of about 80 km/h, the test pilot pushed the throttle lever to the maximum position. At this time, the flapping frequency was 1 Hz, and the aircraft successfully left the runway and At a speed of about 89 kilometers per hour, it flew flat forward at a height of about 1 meter from the ground for 10 seconds, with a total flight distance of 330 meters and only 14 seconds in the air.”, as can be seen from the photos, it uses What is the linkage mechanism. http:∥news.xinhuanet.com/On December 15, 2003, it was reported that Hu Lingxin and Duan Wenbo of Nanjing University of Aeronautics and Astronautics, under the leadership of Professor Ang Haisong, an expert in micro-aircraft at the school, used a three-link flapping wing drive mechanism to make a micro The orthopter weighs only 38 grams, can fly in the air for 6 minutes, and can reach a height of 50 meters.

In fact, the Canadian orthopter that cannot take off and land on the spot is not a real orthopter; while the orthopter of Nanjing University of Aeronautics and Astronautics has extremely limited lift and a payload of only 38 grams; short. Trace it to its cause and be: the flapping wing that instigates up and down will counteract a part of lift force, efficiency is low; In addition, the reliability of the multi-linkage mechanism of high-speed operation will not be very high either.

Contents of the invention

The purpose of the present invention is to disclose a articulated wing type lift generating device, which can generate lift in the process of relative unidirectional rotation by means of two drums hinged with a plurality of arc-shaped wings, so that it has a higher The efficiency is higher, the structure is simpler than the connecting rod mechanism, and the operation is more reliable. Its design idea is to distinguish the dual functions of generating lift and gliding that the bird's wings have during flight, and let other "stationary" components undertake the gliding function (which has nothing to do with this patent application), so that "bionic flight" "The design goal and implementation plan focus on the mechanism that utilizes the flapping wing principle (to fan the air downwards) to generate lift, but it is different from the axial flow fan that the inlet and outlet airflows are on the same axis.

The structure of the articulated-wing lift generating device is that two sets of assemblies with the same structure are fixed together axisymmetrically, and each assembly is composed of drums, fins, hinge shafts, fairings, end plates, bearings and shafts. . Among them, the drum is a cylindrical cylinder with a hub at both ends, and the rotating shaft longer than the cylinder is fixedly connected with the hub along the axis of the cylinder; 4 or 6 hinged shafts are evenly distributed on the outer circumference of the drum, and are connected with the package respectively. One generatrix side of the arc-shaped fins with an angle of 90° or 60° is fixed; when the arc-shaped fins are surrounded, they can tightly surround the drum, and when the drum rotates, it will circle under the action of centrifugal force. The arc-shaped fins can extend radially outward along the drum. The arc-shaped fairing with a wrap angle of 90°-120° and slightly longer than the drum, its inner diameter is slightly larger than the outer diameter of the arc-shaped fins; two circular end plates are fixedly connected to both ends of the fairing. The drum equipped with the rotating shaft and the hinged fins can rotate in one direction in the fairing with the help of the bearing at the center of the circular end plate (this rotation direction requires that the hinged shaft on each fin enters between the drum and the fairing first, otherwise , the arc-shaped fins stretched under the action of centrifugal force cannot enter - the curvature directions of the three are different). The said "two sets of assemblies are connected together axisymmetrically" means that two arc-shaped fairings are fixedly connected back to back into one body.

When the above-mentioned device is installed on the aircraft, the fairing is located above, and the two rotating shafts are in the same horizontal plane and rotate inward respectively (that is, one end facing the rotating shaft, the drum on the left side rotates counterclockwise, and the drum on the right side rotates clockwise ), then, when the non-hinged edges of the two wings on the outside of the drum are separated from the fairing, they gradually stretch due to the centrifugal force, causing the air to move downward; when the two stretched wings on the left and right cross the vertical plane, The airflow sandwiched in between can only move downward because the upward passage is blocked by the fairing; then, the two fins get closer and enter the space formed by the respective drum and fairing, until the above process is repeated. Lift is generated as the airflow moves downward.

The position of the fairing determines when the various fins open and retract, thereby affecting the amount of lift generated. The optimal position of the fairing can be determined by theoretical calculations and experiments.

Description of drawings

Figure 1 Schematic diagram of the cross-sectional structure of the articulated-wing lift generating device

Figure 2 Schematic diagram of the longitudinal structure of the articulated-wing lift generating device

Detailed ways

Preferred embodiments of the present invention are given below and described in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the articulated-wing lift generating device is that two sets of assemblies with the same structure are axisymmetrically fixed together, and each set of assemblies consists of a drum 1, fins 2, hinge shaft 3, The fairing 4, the end plate 5, the bearing 6 and the rotating shaft 7 are composed. Among them, the drum 1 is a cylindrical cylinder with a hub at both ends, and the rotating shaft 7 that is longer than the cylinder is fixedly connected with the hub along the axis of the cylinder; 4 or 6 hinged shafts 3 are evenly distributed on the outer circumference of the drum 1, And be respectively fixedly connected with a generatrix edge of the arc-shaped fin 2 with wrapping angle of 90° or 60°; when the arc-shaped fin 2 is surrounded, it can tightly surround the drum 1, and when the drum 1 rotates Finally, the arc-shaped fins 2 can extend outward along the radial direction of the drum 1 under the action of centrifugal force. The arc-shaped fairing 4 with a wrap angle of 90°-120° and slightly longer than the drum, its inner diameter is slightly larger than the outer diameter of the arc-shaped fin 2; two circular end plates 5 are fixedly connected to the ends of the fairing 4 ends. The drum 1 equipped with the rotating shaft 7 and the hinged vanes 2 can rotate in one direction in the fairing 4 by means of the bearing 6 at the center of the circular end plate 5 (this direction of rotation requires the hinged shaft 3 on each wing 2 to enter first) Between the drum 1 and the fairing 4, otherwise, the arc-shaped fins 2 stretched under the action of centrifugal force cannot enter therebetween—the curvature directions of the three are different). The said "two sets of assemblies are fixed together axisymmetrically" means that two arc-shaped fairings 4 are fixed back-to-back into one body.

The fins 2 involved in the present invention can be made of arc-shaped rigid material or flexible material, that is, it is not necessary to have the original radian, and other parts are also made of light materials to reduce the weight of the body.

The present invention has higher efficiency than flapping wings that are fanned up and down, and the structure is simpler than that of the connecting rod mechanism, and the operation is more reliable.

Claims (1)

1. A hinged wing type lift generating device is characterized in that: it is that two sets of assemblies with the same structure are axisymmetrically fixed together, and each set of assemblies is composed of drum (1), wing (2) , articulated shaft (3), fairing (4), end plate 5), bearing (6) and rotating shaft (7); wherein, the drum (1) is a cylindrical cylinder with hubs at both ends, longer than The rotating shaft (7) of the cylinder is fixedly connected with the hub along the axis of the cylinder; 4 or 6 hinged shafts (3) are evenly distributed on the outer circumference of the drum (1), and are connected to the circle with a wrap angle of 90° or 60° respectively. One busbar side of the arc-shaped fin (2) is fixedly connected; the arc-shaped fairing (4) with a wrap angle of 90°-120° and slightly longer than the drum, and its inner diameter is slightly larger than that of the arc-shaped fin (2) Outer diameter; two circular end plates (5) are fixedly connected to both ends of the fairing (4) respectively; the rotating shaft (7) is inserted into the bearing (6) at the center of the circular end plate (5); two sets The axisymmetric fixed connection of the assembly means that the two arc-shaped fairings (4) are fixed back to back into one body.

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