A shape memory alloy driven morphing wing

Abstract

The present application relates to a kind of shape memory alloy driven deformable wings, belong to aircraft wing technical field, solve the shape of existing wing fixed cannot adjust the problem of wing lift according to aircraft maneuverability demand.A kind of shape memory alloy driven deformable wings, comprising: head wing part, wing main part, shape memory alloy wire and tail wing part;The front and rear ends of the wing main part are respectively fixedly connected with the head wing part and tail wing part;The wing main part includes: elastic skin and deformable framework;The elastic skin cover is arranged in the outside of the deformable framework;Two ends of the shape memory alloy wire are respectively connected with the head wing part and tail wing part by passing through the deformable framework;When the shape memory alloy wire is contracted by temperature influence, it can pull the deformable framework to occur elastic deformation.The present application realizes that wing is deformed and recovers in the process of flight, can provide better maneuverability while improving flight efficiency.

Description

Technical Field

[0001] This invention relates to the field of aircraft wing technology, and more particularly to a deformable wing driven by a shape memory alloy. Background Technology

[0002] An airplane takes to the air because its wings generate lift, but once airborne, the wings also generate drag, affecting the aircraft's forward movement. Therefore, the shape and size of the wings are related to the aircraft's speed. Traditional wing designs typically require a large amount of material to support and maintain their shape, increasing the aircraft's weight and drag. Modern wings consume a significant amount of energy during flight, which is a major problem in today's energy-constrained society. Because wing design and manufacturing require substantial technological and financial investment, wing maintenance costs are also relatively high.

[0003] Currently, wing technology still has many shortcomings and requires further improvement and refinement to address issues such as increasing flight efficiency, reducing energy consumption, enhancing safety, lowering maintenance costs, and improving environmental performance. In the field of wing technology, the selection and application of materials are crucial to wing performance. With the development of composite materials and metal alloys, the structural strength and weight of aircraft wings have been further optimized, thereby improving aircraft durability and flight efficiency. However, research on the application of shape memory alloys in wings is still limited.

[0004] Based on this, the present invention provides a deformable wing driven by shape memory alloy. Summary of the Invention

[0005] Based on the above analysis, the present invention aims to provide a shape memory alloy driven deformable wing to solve the problem that the shape of existing wings is fixed and cannot adjust the wing lift according to the aircraft's maneuverability requirements.

[0006] The objective of this invention is mainly achieved through the following technical solutions:

[0007] A shape memory alloy-driven deformable wing includes: a nose section, a wing body section, shape memory alloy wires, and a tail section; the front and rear ends of the wing body section are fixedly connected to the nose section and the tail section, respectively; the wing body section includes: an elastic skin and a deformable frame; the elastic skin covers the outside of the deformable frame; the two ends of the shape memory alloy wires pass through the deformable frame and are connected to the nose section and the tail section, respectively; when the shape memory alloy wires contract due to temperature, they can pull the deformable frame to undergo elastic deformation.

[0008] Furthermore, the deformable skeleton includes: a wing support plate and a skin support member; multiple skin support members are arrayed on both the upper and lower sides of the wing support plate; the wing support plate is connected to the elastic skin through the skin support members; multiple tension wire through holes are provided on the skin support members to allow the shape memory alloy wires to pass through.

[0009] Furthermore, the shape memory alloy wire includes: a shape memory upper tension wire and a shape memory lower tension wire; one end of the shape memory upper tension wire is fixedly connected to the tail section, and the other end passes through multiple skin support members on the upper side of the wing support plate and is fixedly connected to the nose section; one end of the shape memory lower tension wire is fixedly connected to the tail section, and the other end passes through multiple skin support members on the lower side of the wing support plate and is fixedly connected to the nose section.

[0010] Furthermore, the head wing portion is riveted and fixed to the front end of the elastic skin by a riveting plate and rivets, the rivets passing through the front end of the elastic skin and the riveting plate to be riveted to the head wing portion; the rear end of the elastic skin is fixedly connected to the tail wing portion.

[0011] Furthermore, the skin support member is provided with multiple tension wire through holes at equal intervals; multiple shape memory alloy wires pass through the multiple tension wire through holes respectively; at least four shape memory upper tension wires and four shape memory lower tension wires are provided, and they are arranged symmetrically above and below the wing support plate.

[0012] Furthermore, multiple skin supports are provided on the wing support plate, and the height of the multiple skin supports decreases sequentially from the nose wing portion to the tail wing portion.

[0013] Furthermore, both the head wing and tail wing portions have a symmetrical structure and a perforated structure with multiple openings.

[0014] Furthermore, the shape memory alloy wire is a nickel-titanium-based shape memory alloy, a copper-based shape memory alloy, or an iron-based shape memory alloy.

[0015] Furthermore, the wing support plate is made of an elastic and deformable material.

[0016] Furthermore, the skin support member is a C-shaped structure, a T-shaped structure, or an I-shaped structure.

[0017] Furthermore, the head wing and tail wing are manufactured using 3D printing technology.

[0018] The technical solution of this invention can achieve at least one of the following effects:

[0019] 1. The shape memory alloy driven deformable wing of the present invention adopts an elastic skin that meets the rigidity requirements while also having the elasticity to deform. At the same time, the deformation of the shape memory alloy wire is used to achieve adaptive deformation of the wing, thereby improving the maneuverability, stability and controllability of the aircraft. When the aircraft encounters airflow disturbances or other external interferences, the wing shape can be adjusted in time to maintain the stability and flight control effect of the aircraft.

[0020] 2. The shape memory alloy driven deformable wing of the present invention achieves wing deformation by applying shape memory alloy wires in combination with elastic skin in the wing structure, which can reduce material loss and structural weight, improve the overall performance of the wing, enhance the applicability of the wing in various application scenarios, and bring better economic benefits.

[0021] 3. The shape memory alloy driven deformable wing of the present invention uses 3D printing technology to manufacture the nose and tail sections of the wing, which can form the entire part structure in one step, resulting in low cost and short production cycle.

[0022] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0023] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the structure of a shape memory alloy driven deformable wing according to Embodiment 1 of the present invention;

[0025] Figure 2 This is a front view of a shape memory alloy driven deformable wing according to Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the nose section of a shape memory alloy driven deformable wing according to Embodiment 1 of the present invention;

[0027] Figure 4 This is a schematic diagram of the deformable skeleton of a shape memory alloy driven deformable wing according to Embodiment 1 of the present invention;

[0028] Figure 5 This is a schematic diagram of the deformable skeleton of a shape memory alloy driven deformable wing according to Embodiment 2 of the present invention;

[0029] Figure 6 This is a side view of the deformable frame of a shape memory alloy driven deformable wing according to Embodiment 2 of the present invention.

[0030] Figure 7 This is a partially enlarged view of the deformable frame of a shape memory alloy driven deformable wing according to Embodiment 2 of the present invention;

[0031] Figure 8 This is a schematic diagram illustrating the deformation principle of a floating support assembly for a deformable frame of a shape memory alloy-driven deformable wing, according to Embodiment 2 of the present invention.

[0032] Figure 9 This is a schematic diagram illustrating the deformation principle of a floating support assembly for a deformable frame of a shape memory alloy-driven deformable wing, according to Embodiment 3 of the present invention.

[0033] Figure label:

[0034] 1-Nose wing section; 2-Riveting plate; 3-Rivet; 4-Elastic skin; 5-Shape memory alloy wire; 6-Wing support plate; 7-Skin support component; 8-Tail wing section; 9-Tie string hole;

[0035] 11-Head wing shell; 12-Head wing frame; 13-Connecting wing plate; 14-Connecting crossbeam; 15-First connecting hole; 16-Second connecting hole;

[0036] 51 - Shape memory alloy upper string; 52 - Shape memory alloy lower string;

[0037] 61-Connecting part; 62-Third connecting hole; 63-Fourth connecting hole; 64-Supporting crossbeam; 65-Supporting longitudinal beam; 66-Inflation interface; 67-Floating air chamber; 68-Sealing ring;

[0038] 71-Upper skin support; 72-Lower skin support; 73-Floating support column; 74-Support spring; 75-Moving piston part; 76-Drive support plate. Detailed Implementation

[0039] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0040] Example 1

[0041] One specific embodiment of the present invention discloses a shape memory alloy-driven deformable wing, which allows the wing to switch between different shapes according to different flight phases, improving the aircraft's performance during takeoff, landing, cruise, and other phases; such as Figure 1 , Figure 2As shown, the shape memory alloy driven deformable wing of this embodiment includes: a nose wing portion 1, a wing body portion, a shape memory alloy wire 5, and a tail wing portion 8; the front and rear ends of the wing body portion are fixedly connected to the nose wing portion 1 and the tail wing portion 8, respectively; the wing body portion includes: an elastic skin 4 and a deformable frame; the elastic skin 4 covers the outside of the deformable frame; the two ends of the shape memory alloy wire 5 pass through the deformable frame and are connected to the nose wing portion 1 and the tail wing portion 8, respectively; when the shape memory alloy wire 5 contracts due to temperature, it can pull the deformable frame to undergo elastic deformation.

[0042] In one specific embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 3 As shown, the head wing portion 1 has a symmetrical structure. The symmetrical upper and lower ends and the elastic skin 4 are riveted together by riveting plates 2 and rivets 3. Specifically, the head wing portion 1 and the front end of the elastic skin 4 are riveted together by riveting plates 2 and rivets 3. The rivets 3 pass through the front end of the elastic skin 4 and the riveting plates 2 and are riveted to the head wing portion 1. The rear end of the elastic skin 4 is fixedly connected to the tail wing portion 8.

[0043] In one specific embodiment of the present invention, the tail wing portion 8 has a symmetrical structure, with its symmetrical upper and lower ends fitted and connected to the ends of the elastic skin 4.

[0044] In this embodiment, the length of the riveting plate 2 is adapted to the width of the nose wing portion 1 and the elastic skin 4. The nose wing portion 1, the riveting plate 2, the rivet 3, the elastic skin 4 and the tail wing portion 8 together form the external structure of the wing. The deformable frame serves as the supporting structure of the external structure and can deform under the drive of the shape memory alloy wire 5, thereby simultaneously deforming the external elastic skin 4 and adjusting the overall maneuverability of the wing.

[0045] Furthermore, both the head wing portion 1 and the tail wing portion 8 are symmetrical structures with multiple perforations.

[0046] In this embodiment, as Figure 3As shown, the head wing portion 1 includes: a head wing shell 11, a head wing frame 12, connecting wing plates 13, and a connecting beam 14; specifically, the head wing frame 12 is a grid structure or a fishbone-shaped support structure, and the head wing shell 11 covers the outside of the head wing frame 12; the connecting wing plates 13 are fixedly installed at the ends of the head wing frame 12, and multiple plates are vertically arranged at equal intervals; the upper and lower ends of the connecting wing plates 13 are provided with first connecting holes 15 for connecting with rivets 3; the connecting beam 14 is arranged between two adjacent connecting wing plates 13, the connecting beam 14 is perpendicular to the connecting wing plates 13 and located in the middle of the head wing frame 12, and the connecting beam 14 is provided with second connecting holes 16, in which first screws are installed for fixed connection with the front end of the deformable frame.

[0047] In this embodiment, as Figure 1 , Figure 4 As shown, the deformable skeleton includes: a wing support plate 6 and a skin support member 7; multiple skin support members 7 are arranged in an array on both the upper and lower sides of the wing support plate 6; the wing support plate 6 is connected to the elastic skin 4 through the skin support member 7; multiple drawbar holes 9 are provided on the skin support member 7 to allow the shape memory alloy wire 5 to pass through.

[0048] Specifically, such as Figure 4 As shown, the front end of the wing support plate 6 is provided with multiple connecting parts 61, and the connecting parts 61 are provided with third connecting holes 62; the second connecting hole 16 and the third connecting hole 62 are both threaded holes, and after the two are aligned, the first screw can be installed to fix the wing support plate 6 to the connecting beam 14 of the head wing part 1.

[0049] Specifically, the rear end of the wing support plate 6 is provided with a plurality of fourth connecting holes 63, and second screws are installed in the fourth connecting holes 63 to fix the wing support plate 6 to the tail section 8.

[0050] Preferably, the wing support plate 6 is made of an elastic and deformable material.

[0051] In one specific embodiment of the present invention, the skin support 7 is a C-shaped structure, a T-shaped structure, or an I-shaped structure. For example, when the skin support 7 is a C-shaped structure, such as... Figure 4 As shown.

[0052] In this embodiment, as Figure 1 , Figure 4As shown, shape memory alloy wires 5 are arranged on the upper and lower sides of the wing support plate 6, with four sets on each side. Each shape memory alloy wire 5 passes through the tension wire through hole 9 in the center of the skin support member 7, and its two ends are fixedly connected to the head wing part 1 and the tail wing part 8. The shape memory alloy wires 5 can be any one of nickel-titanium-based shape memory alloy, copper-based shape memory alloy, iron-based shape memory alloy, etc. The wing support plate 6, the skin support member 7, and the shape memory alloy wires 5 together form the internal structure of the wing.

[0053] Furthermore, the shape memory alloy wire 5 includes: a shape memory upper pull wire 51 and a shape memory lower pull wire 52; one end of the shape memory upper pull wire 51 is fixedly connected to the tail fin portion 8, and the other end passes through the multiple skin support members 7 on the upper side of the wing support plate 6 and is fixedly connected to the nose fin portion 1; one end of the shape memory lower pull wire 52 is fixedly connected to the tail fin portion 8, and the other end passes through the multiple skin support members 7 on the lower side of the wing support plate 6 and is fixedly connected to the nose fin portion 1.

[0054] Furthermore, the skin support member 7 is provided with a plurality of drawstring through holes 9 at equal intervals; a plurality of shape memory alloy wires 5 pass through the plurality of drawstring through holes 9 respectively; at least four shape memory upper drawstrings 51 and shape memory lower drawstrings 52 are provided, and are arranged symmetrically above and below the wing support plate 6.

[0055] Specifically, such as Figure 2 As shown, multiple skin support members 7 are provided on the wing support plate 6, and the height of the multiple skin support members 7 decreases sequentially from the nose wing portion 1 to the tail wing portion 8.

[0056] Furthermore, the shape memory alloy wires 5 are connected to a driving power source. When the four shape memory alloy wires on one side are energized, the corresponding shape memory alloy wires 5 on that side undergo phase change contraction, causing the elastic skin 4 to deform inward, thereby enabling the deformable wing to achieve the required camber change to adapt to the corresponding flight conditions. After the power is turned off, the shape memory alloy wires 5 return to their original length, and the deformable wing returns to its original shape. In traditional wings, the skin is generally made of ultra-hard aluminum and steel or titanium alloy, and the joint between the wing spars and the fuselage is made of high-strength structural steel, resulting in high manufacturing and maintenance costs and technical requirements. The deformable wing of this invention improves the aerodynamic performance of the aircraft compared to traditional wings, and the wing surface remains flat and continuous during the deformation process, resulting in higher aerodynamic efficiency.

[0057] Preferably, the shape memory alloy wire 5 is a nickel-titanium-based shape memory alloy, a copper-based shape memory alloy, or an iron-based shape memory alloy.

[0058] Preferably, in this embodiment, the temperature of the shape memory alloy wire 5 is controlled by spirally winding a heating wire around it. Furthermore, when using this spiral winding method for temperature control, the spiral heating wire can deform in sync with the expansion and contraction of the shape memory alloy wire 5 without affecting its performance.

[0059] In this embodiment, the wing support plate 6 is located in the center of the entire deformable wing, and its two ends are connected to the nose wing portion 1 and the tail wing portion 8 respectively. The deformable wing as a whole is symmetrical about the wing support plate 6. The wing support plate 6 provides support for the connection between the skin support member 7 and the elastic skin 4 from both the top and bottom. The deformable wing in this embodiment, by setting the wing support plate 6 and the shape memory alloy wire 5, adjusts the shape and curvature of the outer elastic skin 4 by deforming the shape memory alloy wire 5, so that the wing can switch to different shapes according to different flight stages, thereby improving the performance of the aircraft in different stages such as take-off, landing, and cruise.

[0060] Preferably, the nose and tail sections are made of PLU material, which has the characteristics of being waterproof and having stable performance at high and low temperatures; the wing support plates are made of acrylic material, which has good plasticity, excellent corrosion resistance and safety.

[0061] In one specific embodiment of the present invention, the number of the head wing portion 1 is one, the number of riveting plates 2 is two, the number of rivets 3 is eight, the number of elastic skin 4 is two, the number of wing support plates 6 is one, the number of shape memory alloy wires 5 is eight, the number of skin support members 7 is twelve, and the number of tail wing portion 8 is one. The shape memory alloy wires 5 are arranged on the upper and lower sides of the wing support plate 6, with four evenly distributed on each side. Each shape memory alloy wire 5 passes through the tension wire through hole 9 in the center of the skin support member 7, and its two ends are fixedly connected to the head wing portion 1 and the tail wing portion 8. The tension wire through hole 9 can provide space for the shape memory alloy wire 5 to deform or shift. Figure 2 , Figure 4 As shown, once the deformable wing driven by the shape memory alloy is fully assembled, the wing can operate by controlling the on / off state of the shape memory alloy wires 5 on both sides. During operation, depending on the requirements, when the upper or lower part of the shape memory alloy wire is energized individually, the energized shape memory alloy wire undergoes a phase change and contracts, causing the elastic skin to bend and deform inward.

[0062] Preferably, in this embodiment, both the head wing portion 1 and the tail wing portion 8 are manufactured using 3D printing technology.

[0063] The shape memory alloy-driven deformable wing in this embodiment has the following deformation principle:

[0064] In this embodiment, the shape memory alloy-driven deformable wing is constructed by 3D printing the nose section 1 and tail section 8 of the deformable wing as a whole. The wing body is formed by covering the deformable wing frame with two layers of elastic skin 4, connecting the wing body to the nose section 1 and tail section 8 to form the external structure of the deformable wing. The center of the deformable wing is supported by a wing support plate 6 capable of flexible deformation. Multiple skin support members 7 connect the wing support plate 6 to the elastic skin 4. Shape memory alloy wires 5 are arranged on the upper and lower sides of the wing support plate 6, and each shape memory alloy wire 5... All wires pass through the tension wire holes 9 on the skin support 7 to allow sufficient deformation space for the shape memory alloy wires 5. When it is necessary to adjust the overall shape of the wing, the multiple shape memory upper tension wires 51 and shape memory lower tension wires 52 on the upper and lower sides of the wing support plate 6 are independently energized and de-energized. When one side is energized, the corresponding shape memory upper tension wire 51 / shape memory lower tension wire 52 will undergo temperature change and cause phase change contraction, which will drive the elastic skin 4 to deform inward, so that the deformable wing can achieve the required camber change to adapt to the corresponding flight conditions. After the power is de-energized, the shape memory alloy wires 5 return to their original length, and the deformable wing can return to its original shape.

[0065] Example 2

[0066] A specific embodiment of the present invention is an improvement upon embodiment 1:

[0067] In this embodiment, an improved structure for the deformable frame of the shape memory alloy-driven deformable wing in Embodiment 1 is provided, such as... Figure 5 , Figure 6 , Figure 7 As shown, in this embodiment, the variable skeleton includes: a wing support plate 6 and multiple sets of floating support components arrayed on the wing support plate 6; the floating support components are disposed through the wing support plate 6 and are connected to the elastic skin 4 at both ends.

[0068] In practice, the floating support assembly can cause the elastic skin 4 on the upper and lower sides of the wing support plate 6 to bend and deform by floating up and down relative to the wing support plate 6, thereby adjusting the curvature of the upper and lower sides of the wing to achieve dynamic adjustment of the wing lift.

[0069] Specifically, such as Figure 7 , Figure 8As shown, in this embodiment, the floating support assembly includes: an upper skin support 71, a lower skin support 72, a floating support column 73, and a support spring 74; the upper skin support 71 and the lower skin support 72 are respectively fixedly installed at both ends of the floating support column 73, and are respectively located on the upper and lower sides of the wing support plate 6; the floating support column 73 is disposed through the wing support plate 6 and can float up and down relative to the wing support plate 6. When the floating support column 73 floats up and down, it can drive the upper skin support 71 and the lower skin support 72 to move synchronously, thereby changing the shape of the elastic skin 4.

[0070] Furthermore, such as Figure 7 As shown, the wing support plate 6 is composed of multiple support crossbeams 64 and multiple support longitudinal beams 65 connected sequentially; a support longitudinal beam 65 is provided between two adjacent support crossbeams 64, and both ends of the support longitudinal beam 65 protrude from the upper and lower surfaces of the support crossbeams 64; the floating support column 73 is floatingly mounted on the support longitudinal beam 65, and multiple support springs 74 are provided between the upper skin support member 71 and the upper surface of the support longitudinal beam 65, and between the lower skin support member 72 and the lower surface of the support longitudinal beam 65. Under normal conditions, the upper skin support member 71 and the lower skin support member 72 maintain relative displacement with the wing support plate 6 through the elastic force of the support springs 74, at which time the external elastic skin 4 can maintain its initial state.

[0071] Preferably, the supporting crossbeam 64 is made of a metal, alloy, or carbon fiber material that is prone to elastic deformation; the supporting longitudinal beam 65 is made of alloy steel that is not easily deformed, ensuring that the cooperation between the floating support column 73 and the supporting longitudinal beam 65 can still be maintained even when the deformable frame is deformed.

[0072] In one specific implementation of this embodiment, such as Figure 8 As shown, a floating air chamber 67 is provided inside the supporting longitudinal beam 65, and a movable piston part 75 is provided on the floating support column 73. The movable piston part 75 is slidably installed inside the floating air chamber 67, and an inflation port 66 communicating with the floating air chamber 67 is provided outside the supporting longitudinal beam 65. When the floating air chamber 67 is inflated through the inflation port 66, the movable piston part 75 can be driven to move upward inside the floating air chamber 67, thereby realizing the displacement drive of the floating support assembly. Finally, the shape change of the elastic skin 4 is achieved by the displacement of the floating support assembly to adjust the maneuverability of the wing.

[0073] Specifically, the floating support column 73 extends from the bottom of the floating air chamber 67, and a sealing ring 68 is provided between the floating support column 73 and the support longitudinal beam for sealing, so that when the floating air chamber 67 is inflated, the moving piston part 75 can move upward under the drive of air pressure, and then the floating support column 73 can drive the upper skin support member 71 and the lower skin support member 72 to move synchronously against the elastic force of the support spring 74.

[0074] In this embodiment, the floating support component with deformable skeleton can move up and down relative to the wing support plate 6. In conjunction with the shape memory alloy wire 5, the wing support plate 6 and the elastic skin 4 are driven to deform synchronously. The overall shape of the wing can be controlled and adjusted by using a composite power drive.

[0075] Example 3

[0076] This embodiment provides an alternative to the deformable skeleton in Embodiment 2: a shape memory alloy is used to provide driving force for the floating support column 73 to float on the wing support plate 6.

[0077] In this embodiment, as Figure 9 As shown, the interior of the floating air chamber 67 is filled with a drive support plate 76 made of shape memory alloy; the upper and lower ends of the drive support plate 76 are respectively connected to the lower surface of the moving piston part 75 and the bottom end face of the floating air chamber 67.

[0078] The drive support plate 76 exhibits different length changes under different temperature conditions. By controlling the temperature of the drive support plate 76, its length can be controlled. Furthermore, the extension and retraction of the drive support plate 76 can overcome the elastic force of the support spring 74 to adjust the floating support assembly, thereby achieving shape adjustment of the external elastic skin 4 and ultimately achieving shape adjustment of the deformable wing.

[0079] In this embodiment, shape memory alloy is used to adjust the position of the floating support column 73. Therefore, there is no need to seal the floating air chamber 67 or set up an inflation port 66.

[0080] Preferably, in this embodiment, the temperature of the drive support plate 76 is adjusted by nesting heating wires inside the plate.

[0081] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A deformable wing driven by a shape memory alloy, characterized in that, include: The nose section (1), the main wing section, the shape memory alloy wire (5), and the tail section (8); The front and rear ends of the main body of the wing are fixedly connected to the nose wing (1) and the tail wing (8) respectively; the main body of the wing includes: an elastic skin (4) and a deformable frame; the elastic skin (4) is covered on the outside of the deformable frame; The two ends of the shape memory alloy wire (5) pass through the deformable skeleton and are connected to the head wing part (1) and the tail wing part (8) respectively; when the shape memory alloy wire (5) shrinks due to temperature, it can pull the deformable skeleton to undergo elastic deformation.

2. The deformable wing driven by a shape memory alloy according to claim 1, characterized in that, The deformable frame includes: a wing support plate (6) and a skin support member (7); the skin support member (7) is arranged in an array on both the upper and lower sides of the wing support plate (6); the wing support plate (6) is connected to the elastic skin (4) through the skin support member (7).

3. The shape memory alloy driven deformable wing according to claim 2, characterized in that, The skin support (7) is provided with a drawstring through hole (9) for allowing the shape memory alloy wire (5) to pass through.

4. A shape memory alloy driven deformable wing according to claim 3, characterized in that, The skin support member (7) is provided with multiple drawstring holes (9) at equal intervals; multiple shape memory alloy wires (5) pass through the multiple drawstring holes (9) respectively.

5. A shape memory alloy driven deformable wing according to claim 4, characterized in that, The front end of the head wing (1) is riveted and fixed to the front end of the elastic skin (4) by a riveting plate (2) and a rivet (3). The rivet (3) passes through the front end of the elastic skin (4), the riveting plate (2) and the head wing (1); the rear end of the elastic skin (4) is fixedly connected to the tail wing (8).

6. A shape memory alloy driven deformable wing according to claim 2, characterized in that, Multiple skin support members (7) are provided on the wing support plate (6), and the height of the multiple skin support members (7) decreases sequentially from the head wing portion (1) to the tail wing portion (8).

7. A shape memory alloy driven deformable wing according to claim 1, characterized in that, Both the head wing (1) and the tail wing (8) are symmetrical structures.

8. A shape memory alloy driven deformable wing according to claim 1, characterized in that, The shape memory alloy wire (5) is a nickel-titanium-based shape memory alloy, a copper-based shape memory alloy, or an iron-based shape memory alloy.

9. A shape memory alloy driven deformable wing according to claim 2, characterized in that, The wing support plate (6) is made of an elastic and deformable material.

10. A shape memory alloy driven deformable wing according to claim 2, characterized in that, The skin support (7) is a C-shaped structure, a T-shaped structure, or an I-shaped structure.

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