Telescopic composite wing

Abstract

The invention relates to the field of aerospace, in particular to a telescopic composite wing which can be used for aerospace equipment such as hovercars and carrier-based aircrafts. The telescopic composite wing comprises a wing framework, a wing shell and a linear actuator, and further comprises a hidden propeller mechanism, the telescopic composite wing disclosed by the invention has the following beneficial effects that the shape and the size of the wing can be customized according to requirements; in a contraction state, the wings can be completely hidden, so that a limited space is reasonably utilized, and the whole wings are lighter than traditional wings; in the aspect of structural strength, the wing shell provides secondary bending torsion, the framework provides main bending torsion, and the framework is connected with the wing shell at each section and can synchronously stretch and retract, so that the synchronization degree is high, and the stability is strong; the rotary propellers are installed in the wing sections at the two ends of the wings, and the left and right lift force can be adjusted under the condition that the wings on the two sides are equal in length, so that the aircraft can achieve flight actions such as rolling, and the flight attitude controllability is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace, in particular to a telescopic composite wing which can be applied to flying cars, carrier-based aircraft and other aerospace equipment. BACKGROUND

[0002] Current aircraft equipment all need wings to realize flight, in order to realize low-altitude economy, small aircraft gradually enter people's life and work. One feature of the aircraft is small and portable, and the traditional fixed-wing aircraft has a large wingspan, which is not convenient for storage and transportation. In order to solve the problem of large space occupied by the wing, there are mainly two solutions in the industry, one is to fold the wing, and the other is to stretch the wing.

[0003] Among them, in terms of telescopic wings, the most common is flexible skin, but the flexible skin is soft and thin, which cannot meet the requirements of high-speed flight in actual application; in addition, some telescopic wings adopt sleeve type structure, but this structure needs continuous sleeve connection, and cannot set flaps or ailerons, so it is difficult to control the attitude of the aircraft during flight, and the flexibility is low and the controllability is poor. SUMMARY

[0004] The present application is aimed at the technical defects mentioned in the background art, and provides a telescopic composite wing which can flexibly adjust the flight attitude on the basis of telescopic structure and is applied to flying cars, carrier-based aircraft and other aerospace vehicles.

[0005] In order to achieve the above technical purpose, the technical scheme adopted by the present application is: a telescopic composite wing, comprising a wing skeleton, a wing shell and a linear actuator, further comprising a hidden propeller mechanism; The wing shell is composed of a plurality of hollow short sections which are sequentially sleeved together, and the adjacent short sections are slidingly connected; The wing skeleton is arranged inside the wing shell; the linear actuator is connected with the first end of the wing skeleton to realize driving; The hidden propeller mechanism is installed inside the short section at the outermost end of the wing shell.

[0006] As a preferred technical scheme: the size of each short section is reduced in proportion, realizing the sliding sleeve of adjacent short sections; the length direction of each short section is an equal cross-section structure.

[0007] As a preferred technical scheme: an inner rib is arranged on the inner side of one end of the short section, and an outer rib is arranged on the outer side of the other end.

[0008] As a preferred technical scheme: a rotating shaft is vertically arranged in the central section of the inner side of the inner rib.

[0009] As a preferred technical scheme: the wing skeleton comprises a telescopic frame, a pin shaft and a rotary bearing; the telescopic frame comprises a plurality of shear fork units combined by connecting rods, and the telescopic frame is synchronously telescoped with the wing shell; the central portions of the two connecting rods of a shear fork unit are sleeved on a rotary shaft on the inner side of the wing shell through the rotary bearing, so that the shear fork unit is hinged; and the free ends of the connecting rods of adjacent shear fork units are hinged through the pin shaft.

[0010] As a preferred technical scheme: the connecting rods are provided with rotary holes for connection at both ends and the central portion, and the bodies of the connecting rods are uniformly provided with lightening holes.

[0011] As a preferred technical scheme: the hidden propeller mechanism comprises a propeller body, a propeller fixing support and a propeller motor; the propeller fixing support is installed in the outermost short section of the wing shell; the propeller motor is installed on the propeller fixing support; and the propeller body is installed on the propeller motor and is driven to rotate by the propeller motor.

[0012] As a preferred technical scheme: the wing tip winglet is arranged on the outer side of the outermost short section of the wing shell, and the wing tip winglet extends obliquely upward to the right.

[0013] As a preferred technical scheme: the linear actuator is installed on the fuselage; and the largest short section of the wing shell is installed on the fuselage at a corresponding position through a connecting piece.

[0014] Compared with the prior art, the telescopic composite wing has the following beneficial effects: 1. The wing shape and size can be customized according to requirements, and modular installation and arrangement can be realized; 2. In the retracted state, the wing can be completely hidden, the reasonable use of limited space is realized, and the weight of the entire wing is lighter than that of a traditional wing; 3. In terms of structural strength, the wing shell provides secondary bending and torsional force, the skeleton provides primary bending and torsional force, the skeleton is connected with the wing shell at each section and can be synchronously telescoped, the synchronization degree is high, and the stability is strong; 4. The rotary propeller is installed in the wing type at both ends of the wing, the size of the left and right lift forces can be adjusted in the case that the wings on both sides are equal in length, the aircraft can realize rolling flight and other flight movements, the controllability of the flight attitude is strong, and the maximization of utilization in limited space is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the wing skeleton in the retracted state.

[0016] Figure 2 It is a sectional view of A-A of Figure 1

[0017] Figure 3 It is​Figure 1 The left view.

[0018] Figure 4 This is a schematic diagram of the wing frame in its extended state.

[0019] Figure 5 for Figure 4 A sectional view along the AA direction.

[0020] Figure 6 for Figure 4 The left view.

[0021] Figure 7 for Figure 4 A magnified view of part B in the image.

[0022] Figure 8 This is a schematic diagram of the wing shell structure.

[0023] Figure 9 for Figure 8 Sectional view along direction AA.

[0024] Figure 10 for Figure 8 BB-direction sectional view.

[0025] Figure 11 for Figure 8 Top view.

[0026] Figure 12 This is a schematic diagram of the connecting rod.

[0027] Figure 13 for Figure 12 AA view in the middle.

[0028] Figure 14 This is a schematic diagram of the propeller mounting structure.

[0029] In the diagram: 1. Linear actuator; 2. Wing shell; 3. Wing frame; 4. Concealed propeller mechanism; 5. Winglet. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] See appendix Figures 1-14 The telescopic composite wing disclosed in this invention, It includes a linear actuator 1, a wing shell 2, a wing frame 3, a concealed propeller mechanism 4, and winglets 5. The linear actuator drives the frame to deform, and the frame drives the wing shell to extend and retract, thereby increasing the wingspan of the wing several times over.

[0032] As a preferred embodiment, the wing shell 2 comprises short sections 2-1, outer ribs 2-2, inner ribs 2-3, and rotating shafts 2-4. The wing shell 2 is formed by a plurality of hollow short sections 2-1 which are sequentially sleeved together, and the outermost adjacent short sections are connected together by a clamping piece combination sliding connection. The outer dimensions of each short section are sequentially reduced in proportion, so as to realize the sliding sleeve setting of adjacent short sections; each short section has an equal cross-section structure in the length direction, so as to realize linear sliding in the length direction.

[0033] As a preferred embodiment, the inner side of one end of the short section 2-1 is provided with the inner rib 2-2, and the outer side of the other end of the short section 2-1 is provided with the outer rib 2-3. The inner rib 2-2 is matched with the cross-section shape of the short section, and is vertically arranged between the upper and lower walls of the short section. The outer rib 2-3 is sleeved on the outer surface of the short section. The inner and outer ribs further increase the strength of the overall wing structure.

[0034] As a preferred embodiment, the rotating shaft 2-4 is vertically arranged in the central cross-section of the inner side of the inner rib 2-2, and the side surfaces of the rotating shaft 2-4 are connected with the inner rib 2-2.

[0035] As another preferred embodiment, the wing skeleton 3 is arranged inside the wing shell 2; the linear actuator 1 is connected with the leading end of the wing skeleton 3 to realize driving. As a preferred embodiment, the linear actuator 1 is installed on the fuselage, and the largest short section of the wing shell 2 is installed on the fuselage at the corresponding position by a connecting piece such as a bolt, and is fixed.

[0036] As a preferred embodiment, the wing skeleton 3 comprises a telescopic frame 3-2, a pin shaft 3-3, and a rotating bearing 3-3. The telescopic frame 3-2 comprises a plurality of scissor units which are combined by two connecting rods 3-4, and the telescopic frame 3-2 is synchronously telescoped with the wing shell 2. The central portions of the two connecting rods 3-4 of one scissor unit are sleeved on the rotating shaft 2-4 inside the wing shell through the rotating bearing 3-3, so as to realize hinging. The free ends of the corresponding connecting rods 3-4 of adjacent scissor units are hinged through the pin shaft 3-3.

[0037] As a preferred embodiment, the connecting rod 3-4 is provided with rotating holes 3-5 for connection at both ends and the central portion, and the body is uniformly provided with lightening holes 3-6.

[0038] The short sections constituting the wing shell 2 can be formed by a composite material mold, or can be made of a high-strength lightweight alloy. The outer ribs and the inner ribs can be separately processed and then welded or bonded as edge reinforcement zones. The wing skeleton 3 can also be made of a composite material or a lightweight alloy, and bearings or other lubrication methods can be added at the rotating mechanism to reduce the friction resistance of movement.

[0039] The two ends of the linear actuator 1 are connected to the two connecting rods 3-4 of the scissors unit at the leading end of the wing skeleton by shafts, and the wing skeleton can be extended and shortened under the drive of the linear actuator. A small stroke can drive a large angle change of the skeleton. Since the wing only changes in the length direction, its deformation is more flexible, and if applied to an airplane, it can realize deformation while taking off or landing without stopping.

[0040] As another preferred embodiment, the hidden propeller mechanism 4 is installed in the short section at the outermost end of the wing shell 2, which does not participate in the extension and retraction of the wing shell and has no wing skeleton inside. At the wing tip section of the wing, the electric propeller is designed and installed in the airfoil envelope surface to play the role of aileron and flap. The hidden propeller mechanism 4 includes a propeller body 4-1, a propeller fixing support 4-2, and a propeller motor 4-3. The propeller fixing support 4-2 is installed in the short section at the outermost end of the wing shell 2, and its upper and lower ends are connected to the upper and lower inner walls of the short section. The propeller motor 4-3 is installed on the propeller fixing support 4-2, and the propeller body 4-1 is horizontally installed on the propeller motor 4-2 and driven to rotate by the propeller motor 4-3. The size of the force is controlled by controlling the rotating speed of the motor. The propeller can be adjusted by forward rotation and reverse rotation, thereby realizing upward or downward wind power adjustment. Even if a single motor fails, only one side of the propeller can still realize the function of adjusting the attitude of the airplane.

[0041] As a preferred embodiment, the wing shell 2 of the present application further includes a wing tip winglet 5, which is arranged outside the short section at the outermost end of the wing shell 2 and extends obliquely upward to the right.

Claims

1. A telescopic composite wing, comprising a wing frame, a wing shell, and a linear actuator, characterized in that, It also includes a concealed propeller mechanism; The wing shell is composed of multiple hollow short sections that are sequentially nested together, with adjacent short sections slidingly connected. The wing frame is located inside the wing shell; the linear actuator is connected to the tip of the wing frame to achieve drive. The concealed propeller mechanism is installed inside the short section at the outermost end of the wing shell.

2. The telescopic composite wing according to claim 1, characterized in that, Each of the aforementioned short sections has a decreasing outer dimension in a sequentially proportional manner, enabling adjacent short sections to slide together; each short section has a uniform cross-section structure along its length.

3. The telescopic composite wing according to claim 1, characterized in that, An inner rib is provided on the inner side of one end of the short section, and an outer rib is provided on the outer side of the other end.

4. The telescopic composite wing according to claim 3, characterized in that, A rotation axis is vertically arranged at the center of the cross-section on the inner side of the inner rib.

5. The telescopic composite wing according to claim 1 or 4, characterized in that, The wing frame includes a telescopic frame, a pin shaft, and a swivel bearing; the telescopic frame includes multiple scissor units composed of connecting rods, and the telescopic frame extends and retracts synchronously with the wing shell; The two connecting rods of a scissor lift unit are both mounted on a rotating shaft inside the wing shell via a rotary bearing, thus achieving a hinged connection. The free ends of the connecting rods of adjacent scissor lift units are hinged by the pin.

6. The telescopic composite wing according to claim 5, characterized in that, The connecting rod has rotating holes at both ends and the center for connection, and weight-reducing holes are evenly distributed on its body.

7. The telescopic composite wing according to claim 1, characterized in that, The concealed propeller mechanism includes a propeller body, a propeller mounting bracket, and a propeller motor. The propeller mounting bracket is installed inside the short section at the outermost end of the wing shell; The propeller motor is mounted on the propeller mounting bracket; The propeller body is mounted on a propeller motor, which drives its rotation.

8. The telescopic composite wing according to claim 1, characterized in that, It also includes winglets; the winglets are located outside the short section at the outermost end of the wing shell, and the winglets extend diagonally upward to the right.

9. The telescopic composite wing according to claim 1, characterized in that, The linear actuator is mounted on the fuselage; the maximum short section of the wing shell is mounted on the fuselage at its corresponding position via a connector.

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