A waverider variant mechanism based on dual-drive crank sliders

Abstract

A waverider variant mechanism based on a dual-drive crank-slider design belongs to the field of hypersonic aircraft technology. This invention solves the problem that existing waverider aircraft structures cannot achieve optimal aerodynamic efficiency and static stability across all states of their flight envelope. It includes a support frame, a shape-shifting assembly, and a variant assembly located inside the support frame. The shape-shifting assembly includes a cover, a flexible skin, two head springs, and two tail springs. By configuring the support frame, shape-shifting assembly, and variant assembly, the problem of existing waverider aircraft structures failing to achieve optimal aerodynamic efficiency and static stability across different speed states of their flight envelope is solved.

Description

Technical Field

[0001] This invention relates to a waverider variant mechanism based on a dual-drive crank-slider, belonging to the field of hypersonic aircraft technology. Background Technology

[0002] Research into hypersonic combustion and supersonic combustion ramjet engines, which began in the 1950s, marked the starting point for the development of hypersonic vehicle technology. Compared to traditional subsonic or supersonic vehicles, hypersonic vehicles offer faster speeds, stronger penetration capabilities, and better stealth, significantly increasing flight speed and altitude, expanding airspace, and playing a crucial strategic deterrent role militarily. Prioritizing the development of advanced hypersonic vehicles is also an important factor in enhancing a nation's comprehensive national strength. Major spacefaring nations worldwide have all been involved in hypersonic technology research, which has transitioned from initial basic research and conceptual exploration to engineering applications.

[0003] Based on existing wind tunnel tests and flight test results, the hypersonic lift-to-drag ratio limit achievable with conventional configurations is 4. Currently, the waverider configuration is widely recognized as the most promising configuration to break this limit. Compared to conventional configurations, the waverider configuration allows the shock wave generated during flight to adhere to the leading edge, preventing high-pressure gas from overflowing to the upper surface, thus achieving higher aerodynamic efficiency. The requirements for lift-to-drag ratio and integrated design performance in hypersonic vehicles and spaceplanes have made the waverider configuration a research hotspot in this field, yielding fruitful research results and bringing the engineering application of waverider vehicles closer to reality.

[0004] Current research in this field mainly focuses on waverider design and optimization methods, longitudinal stability studies, lateral stability studies, and unsteady aerodynamic characteristics. Researchers from various countries have proposed multiple methods for generating waverider configurations, designing various configurations such as Λ-type waveriders, conical waveriders, and power waveriders, while also studying the static stability of waveriders at different Mach numbers. However, current research primarily focuses on the aerodynamic characteristics of specific waverider configurations at a certain speed or speed range, conducting simulation calculations, wind tunnel tests, and flight experiments for single flight conditions. This approach cannot guarantee optimal aerodynamic efficiency and static stability across all states of the flight envelope. Fixed waverider configurations are no longer sufficient to meet the demands of multi-mission operations in complex environments such as current combat and reconnaissance. Aircraft capable of adapting to deformation in high-speed airflow while maintaining their waverider configuration on the outer surface have become one of the future development directions. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems and provides a waverider variant mechanism based on a dual-drive crank-slider.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A waverider variant mechanism based on a dual-drive crank-slider includes a support frame, a shape-shifting assembly, and a variant assembly located inside the support frame. The shape-shifting assembly includes a cover, a flexible skin, two head springs, and two tail springs.

[0008] A flexible skin covers the bottom of the supporting frame, and its edges are fixed to the supporting frame. The cover is fixed to the upper part and the rear of the supporting frame.

[0009] Two head springs are arranged side by side on the flexible skin, and the side of each head spring away from the other head spring is fixed to the bottom of the supporting frame. Two tail springs are arranged side by side on the flexible skin and are located behind the two head springs. The side of each tail spring away from the other tail spring is fixed to the bottom of the supporting frame.

[0010] The variant assembly includes a front motor assembly, a rear motor assembly, a front lead screw and slider assembly, a rear lead screw and slider assembly, a front connecting plate, a rear connecting plate, a first support beam, and a second support beam. Two sets of guide rods are also installed inside the support frame.

[0011] The front motor assembly and the rear motor assembly are respectively fixedly connected to the support frame. The front lead screw in the front lead screw and slider assembly is correspondingly installed at the output end of the front motor assembly. The front lead screw nut slider in the front lead screw and slider assembly is slidably mounted on a set of guide rods. The rear lead screw nut slider in the rear lead screw and slider assembly is slidably mounted on another set of guide rods. The front end of the front connecting plate is hinged to the front end of the support frame. The rear end of the front connecting plate and the front end of the rear connecting plate are both hinged to one end of the first support beam. The rear end of the rear connecting plate is hinged to one end of the second support beam. The other end of the first support beam is hinged to the front lead screw nut slider, and the other end of the second support beam is hinged to the rear lead screw nut slider.

[0012] The front connecting plate is located above the two head springs, and the rear connecting plate is located above the two tail springs.

[0013] Furthermore, the support frame includes a multi-frame main body and two connecting beams, wherein the two connecting beams are arranged side by side, the multi-frame main body is arranged along the axial direction of the wave rider, and the bottom end of each frame main body is fixedly connected to the two connecting beams, and the front part of the support frame has a tapering structure.

[0014] Furthermore, a front motor adapter, a front bearing housing, a rear motor adapter, and a rear bearing housing are respectively installed on the inner side of the multi-frame main body. The front motor assembly is fixed on the front motor adapter, and the rear motor assembly is fixed on the rear motor adapter. The front lead screw and the rear lead screw are respectively rotatably mounted on the front bearing housing and the rear bearing housing through the bearing assembly.

[0015] Furthermore, the front lead screw and the front bearing housing, as well as the rear lead screw and the rear bearing housing, are rotatably connected by angular contact ball bearings arranged face-to-face.

[0016] Furthermore, a linear bearing is provided between each nut slider and its corresponding guide rod.

[0017] Furthermore, the cover includes an upper cover and a tail cover, wherein the upper cover covers the upper part of the support frame, and the tail cover is located behind the support frame and is fixedly connected to the tail end of the upper cover.

[0018] Furthermore, the front parts of the two tail tweezers overlap with the rear parts of the two head tweezers in a one-to-one correspondence.

[0019] Furthermore, each group of guide rods contains two guide rods arranged in parallel.

[0020] Furthermore, one side of each spring is fixed to the bottom of the supporting frame by several screws.

[0021] Furthermore, both the head and tail springs are made of spring steel.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] The front and rear motor assemblies control the front and rear lead screw and slider assemblies respectively, which in turn control the first and second support beams, thereby controlling the angles of the front and rear connecting rods. This results in the deformation of the head and tail springs, ultimately causing the bottom of the waverider to exhibit different structures. In other words, the support beams and connecting plates provide the driving force for the deformation of the flexible skin.

[0024] The waverider variant mechanism based on dual-drive crank-slider of the present invention solves the problem that existing waverider structure aircraft cannot achieve optimal aerodynamic efficiency and static stability performance of the flight envelope at different speeds by setting up a support frame, shape-forming components and variant components.

[0025] This invention employs a dual-motor driven crank-slider scheme to achieve independent movement of the front and rear control points, respectively. Combined with a lead screw and nut, this enables precise motion control and achieves a good waverider fitting effect. During driving, the motors are energized and locked using torque; when power is off, the motors are locked by a brake, and the lead screw enables self-locking for multiple variant shapes. The crank-slider mechanism amplifies the stroke, resulting in a deformation response time of less than 0.1 seconds when switching between basic shapes.

[0026] A spring-loaded flap combined with a flexible skin maintains the waverider configuration. The flap is deformed by a crank-slider mechanism and reset using its rebound force. The flexible skin ensures a smooth and continuous bottom profile for the entire lifting body. At Mach 3, the waverider exhibits a bulging center and a tapered tail; at Mach 6, it exhibits a tapered center and a tapered tail; and at Mach 10, it exhibits a tapered center and a bulging tail. This design balances aerodynamic performance at both high and low Mach rates, resulting in a better lift-to-drag ratio and static stability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the internal structure of a waverider variant mechanism based on a dual-drive crank-slider according to the present invention.

[0028] Figure 2 This is a schematic diagram of the external structure of a waverider variant mechanism based on a dual-drive crank-slider according to the present invention.

[0029] Figure 3 A schematic diagram of the three-dimensional structure of the variant component;

[0030] Figure 4 This is a schematic diagram of the variant component in the 6Ma state;

[0031] Figure 5 This is a schematic diagram of the variant component in the 3Ma state;

[0032] Figure 6 This is a schematic diagram of the variant component in the 10Ma state;

[0033] Figure 7 A schematic diagram (view from below) showing the initial positional relationship of the front connecting plate, rear connecting plate, head spring, and tail spring;

[0034] Figure 8 This is a top view showing the second positional relationship of the front connecting plate, rear connecting plate, head spring, and tail spring.

[0035] In the picture:

[0036] 1. Support frame; 1-1. Frame body; 1-2. Connecting beam; 2-11. Top cover; 2-12. Tail cover; 2-2. Flexible skin; 2-3. Head spring; 2-4. Tail spring; 2-5. Projectile wing; 3-1. Front motor assembly; 3-2. Rear motor assembly; 3-31. Front lead screw; 3-32. Front lead screw nut slider; 3-41. Rear lead screw; 3-42. Rear lead screw nut slider; 3-5. Front connecting plate; 3-6. Rear connecting plate; 3-7. First support beam; 3-8. Second support beam; 3-9. Guide rod; 3-10. Linear bearing; 3-11. Angular contact ball bearing; 3-12. Front motor adapter; 3-13. Front bearing seat. Detailed Implementation

[0037] Specific implementation method 1: Combination Figures 1 to 8 This description of embodiments provides a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that the descriptions of "front," "rear," "left," "right," "inner," "outer," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this invention are defined based on the orientation or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In the description of this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] A waverider variant mechanism based on a dual-drive crank-slider includes a support frame 1, a shape-forming assembly, and a variant assembly located inside the support frame 1. The shape-forming assembly includes a cover, a flexible skin 2-2, two head springs 2-3, and two tail springs 2-4.

[0041] The flexible skin 2-2 covers the bottom of the support frame 1 and its edges are fixed to the support frame 1. The cover is fixed to the upper part and the tail of the support frame 1.

[0042] Two head springs 2-3 are arranged side by side above the flexible skin 2-2, and the side of each head spring 2-3 away from the other head spring 2-3 is fixedly connected to the bottom of the support frame 1. Two tail springs 2-4 are arranged side by side above the flexible skin 2-2 and are located behind the two head springs 2-3 respectively. The side of each tail spring 2-4 away from the other tail spring 2-4 is fixedly connected to the bottom of the support frame 1.

[0043] The variant assembly includes a front motor assembly 3-1, a rear motor assembly 3-2, a front lead screw and slider assembly, a rear lead screw and slider assembly, a front connecting plate 3-5, a rear connecting plate 3-6, a first support beam 3-7, and a second support beam 3-8. Two sets of guide rods 3-9 are also installed inside the support frame 1.

[0044] The front motor assembly 3-1 and the rear motor assembly 3-2 are respectively fixedly connected to the support frame 1. The front lead screw 3-31 in the front lead screw and slider assembly is correspondingly installed at the output end of the front motor assembly 3-1. The front lead screw nut slider 3-32 in the front lead screw and slider assembly is slidably mounted on a set of guide rods 3-9. The rear lead screw nut slider 3-42 in the rear lead screw and slider assembly is slidably mounted on another set of guide rods 3-9. The front end of the front connecting plate 3-5 is hinged to the front end of the support frame 1. The rear end of the front connecting plate 3-5 and the front end of the rear connecting plate 3-6 are both hinged to one end of the first support beam 3-7. The rear end of the rear connecting plate 3-6 is hinged to one end of the second support beam 3-8. The other end of the first support beam 3-7 is hinged to the front lead screw nut slider 3-32. The other end of the second support beam 3-8 is hinged to the rear lead screw nut slider 3-42.

[0045] The front connecting plate 3-5 is located above the two head spring pieces 2-3, and the rear connecting plate 3-6 is located above the two tail spring pieces 2-4.

[0046] The shape-forming component includes a solid part and a variable part. The solid part is the cover, and the variable part is the flexible skin 2-2, two head springs 2-3 and two tail springs 2-4.

[0047] By using a variant component to deform the variable part in the dimensional component, the bottom of the waverider can exhibit different structures to meet the lifting requirements at different Mach numbers. The variant component has 2 degrees of freedom.

[0048] The cover is sealed to the flexible skin 2-2, enclosing the supporting frame 1 and the variant components. For the aircraft as a whole, other structural components inside the aircraft are also enclosed within the cover and the flexible skin 2-2. The flexible skin 2-2 envelops the outside of each spring and deforms with the deformation of the spring, achieving fitting of the shape of the waverider at different Mach numbers.

[0049] The cover and flexible skin 2-2 mainly serve to enclose other components and maintain the shape of the waverider.

[0050] The rear outer wall of the cover and the rear outer wall of the flexible skin 2-2 covering the bottom of the support frame 1 are respectively fixed with projectile wings 2-5. These projectile wings 2-5 are part of the aircraft and are existing technology, so they will not be described in detail here.

[0051] The cover material can be white photosensitive resin.

[0052] The head spring 2-3 and tail spring 2-4 can be made of spring steel. The side of each head spring 2-3 away from the other head spring 2-3 is fixed to the bottom of the support frame 1. The side of each tail spring 2-4 away from the other tail spring 2-4 is fixed to the bottom of the support frame 1. The side of each head spring 2-3 close to the other head spring 2-3 and the side of each tail spring 2-4 close to the other tail spring 2-4 are free sides, so as to realize the waverider transformation and provide power for recovery.

[0053] The flexible skin 2-2 can be made of silicone or silicone rubber, and it wraps around the lower surface of the head spring 2-3 and the tail spring 2-4. Its function is to optimize the shape fitting effect of the wave rider and improve the load-bearing capacity of the head spring 2-3 and the tail spring 2-4.

[0054] The front lead screw nut slider 3-32 and the rear lead screw nut slider 3-42 are driven by the front lead screw 3-31 and the rear lead screw 3-41 respectively, and achieve linear motion along the guide rod 3-9. The front lead screw nut slider 3-32, the rear lead screw nut slider 3-42, the second support beam 3-8, the first support beam 3-7, the front connecting plate 3-5, and the rear connecting plate 3-6 form two sets of crank-slider mechanisms.

[0055] Guide rods 3-9 are smooth rods.

[0056] The front motor assembly 3-1 and the rear motor assembly 3-2 control the front and rear lead screw and slider assemblies, respectively, which in turn control the first support beam 3-7 and the second support beam 3-8. This, in turn, controls the angles of the front and rear connecting rods, thereby deforming the head spring 2-3 and the tail spring 2-4, ultimately resulting in different structures at the bottom of the waverider. In other words, the support beams and connecting plates provide the driving force for the deformation of the flexible skin 2-2.

[0057] The position where the rear end of the front connecting plate 3-5 and the front end of the rear connecting plate 3-6 are hinged to the first support beam 3-7 is the front control point, and the position where the rear end of the rear connecting plate 3-6 is hinged to the second support beam 3-8 is the rear control point.

[0058] Modeled at a 1 / 3 scale, each nut slider has a stroke of 15mm. The stroke is amplified by a crank-slider mechanism, resulting in a front control point displacement of 33.1mm and a rear control point displacement of 34.1mm, thus achieving a shorter deformation response time.

[0059] Both the front motor assembly 3-1 and the rear motor assembly 3-2 include a brake motor and its control components. This structure is a mature existing technology and will not be described in detail here.

[0060] The waverider variant mechanism based on dual-drive crank-slider of the present invention solves the problem that existing waverider structure aircraft cannot achieve optimal aerodynamic efficiency and static stability performance of the flight envelope at different speeds by setting up a support frame 1, a three-dimensional component and a variant component.

[0061] This invention employs a dual-motor driven crank-slider scheme to achieve independent movement of the front and rear control points, respectively. Combined with a lead screw and nut, this enables precise motion control and achieves a good waverider fitting effect. During driving, the motors are energized and locked using torque; when power is off, the motors are locked by a brake, and the lead screw enables self-locking for multiple variant shapes. The crank-slider mechanism amplifies the stroke, resulting in a deformation response time of less than 0.1 seconds when switching between basic shapes.

[0062] A spring-loaded spring combined with a flexible skin 2-2 maintains the waverider configuration. The spring-loaded spring is deformed by a crank-slider mechanism and returns to its original shape using its rebound force. The flexible skin 2-2 ensures a smooth and continuous bottom profile for the entire lifting body. At Mach 3, the waverider exhibits a bulging center and a contracted tail; at Mach 6, it exhibits a contracted center and a contracted tail; and at Mach 10, it exhibits a contracted center and a bulging tail. This design balances aerodynamic performance at both high and low Mach rates, resulting in a better lift-to-drag ratio and static stability.

[0063] The supporting frame 1 includes a multi-level frame body 1-1 and two connecting beams 1-2, wherein the two connecting beams 1-2 are arranged side by side, the multi-level frame body 1-1 is arranged along the axial direction of the wave rider, and the bottom end of each level of frame body 1-1 is fixed to the two connecting beams 1-2. The front of the supporting frame 1 has a tapering structure. This design, through the multi-level frame body 1-1, provides support for the cover and provides installation positions for the internal variant components. The connecting beams 1-2 have mounting holes for the V-shaped components.

[0064] The inner side of the multi-stage frame body 1-1 is respectively equipped with a front motor adapter 3-12, a front bearing housing 3-13, a rear motor adapter, and a rear bearing housing. The front motor assembly 3-1 is fixedly mounted on the front motor adapter 3-12, and the rear motor assembly 3-2 is fixedly mounted on the rear motor adapter. The front lead screw 3-31 and the rear lead screw 3-41 are respectively rotatably mounted on the front bearing housing 3-13 and the rear bearing housing via bearing assemblies. This design provides connection interfaces and mounting positions for the variant components through the multi-stage frame body 1-1. The front motor assembly 3-1 and the front lead screw 3-31, as well as the rear motor assembly 3-2 and the rear lead screw 3-41, are connected and transmitted via couplings.

[0065] The front lead screw 3-31 and the front bearing housing 3-13, and the rear lead screw 3-41 and the rear bearing housing, are respectively rotatably connected by angular contact ball bearings 3-11 arranged face-to-face. This design restricts the axial and radial displacements of the front lead screw 3-31 and the rear lead screw 3-41.

[0066] Each nut slider is equipped with a linear bearing 3-10 between itself and its corresponding guide rod 3-9. This design facilitates the linear movement of the nut slider on the guide rod 3-9 and improves the load-bearing capacity.

[0067] The cover includes an upper cover 2-11 and a tail cover 2-12, wherein the upper cover 2-11 covers the upper part of the support frame 1, and the tail cover 2-12 is located behind the support frame 1 and is fixedly connected to the tail end of the upper cover 2-11.

[0068] The front parts of the two tail spring clips 2-4 overlap with the rear parts of the two head spring clips 2-3 in a one-to-one correspondence.

[0069] Each set of guide rods 3-9 consists of two guide rods 3-9 arranged in parallel. This design provides more stable guidance and load-bearing capacity to the front nut slider 3-32 or rear nut slider 3-42 via the two parallel guide rods 3-9. The two guide rods 3-9 in each set are symmetrically arranged along the axis of the wave rider.

[0070] Each spring piece is fixed to the bottom of the support frame 1 by several screws on one side.

[0071] The head spring 2-3 and the tail spring 2-4 are both made of spring steel.

[0072] Working principle:

[0073] Assuming the initial state of the variant structure is as follows Figure 4 As shown, in the 6Ma configuration, the front lead screw nut slider 3-32 is in the rear working position, and the rear lead screw nut slider 3-42 is in the front working position. At this time, the bottom of the wave rider is in a non-protruding configuration under the rebound force of the head spring 2-3 and the tail spring 2-4. When it is necessary to change to the 3Ma configuration, the rear motor assembly 3-2 keeps the motor locked, so that the rear lead screw nut slider 3-42 remains stationary. The front motor assembly 3-1 drives the front lead screw 3-31 to rotate, which drives the front lead screw nut slider 3-32 to move forward along the guide rod 3-9. Since the front connecting plate 3-5, the first support beam 3-7 and the rear connecting plate 3-6 are hinged to each other, the front connecting plate 3-5 and the rear connecting plate 3-6 rotate, which pushes the head spring 2-3 and the tail spring 2-4 below them to deform, and the bottom of the wave rider presents a configuration with a central protrusion.

[0074] When transitioning from the 6Ma configuration to the 10Ma configuration, the front motor assembly 3-1 remains locked, keeping the front lead screw slider 3-32 stationary. The rear motor assembly 3-2 drives the rear lead screw 3-41 to rotate, causing the rear lead screw slider 3-42 to move backward along the guide rod 3-9. Since the rear lead screw slider 3-42, the second support beam 3-8, and the rear connecting plate 3-6 are hinged, the rotation of the second support beam 3-8 and the rear connecting plate 3-6 causes deformation of the tail spring 2-4 below them. The bottom of the waverider exhibits a tail-protruding configuration.

[0075] 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 equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A waverider variant mechanism based on a dual-drive crank-slider, characterized in that: It includes a supporting frame (1), a three-dimensional assembly, and a variant assembly located inside the supporting frame (1), wherein the three-dimensional assembly includes a cover, a flexible skin (2-2), two head springs (2-3), and two tail springs (2-4). A flexible skin (2-2) covers the bottom of the support frame (1) and its edges are fixed to the support frame (1). The cover is fixed to the upper part and the tail of the support frame (1). Two head springs (2-3) are arranged side by side above the flexible skin (2-2), and the side of each head spring (2-3) away from the other head spring (2-3) is fixed to the bottom of the support frame (1). Two tail springs (2-4) are arranged side by side above the flexible skin (2-2) and are located behind the two head springs (2-3). The side of each tail spring (2-4) away from the other tail spring (2-4) is fixed to the bottom of the support frame (1). The variant assembly includes a front motor assembly (3-1), a rear motor assembly (3-2), a front lead screw and slider assembly, a rear lead screw and slider assembly, a front connecting plate (3-5), a rear connecting plate (3-6), a first support beam (3-7), and a second support beam (3-8). The support frame (1) also contains two sets of guide rods (3-9). The front motor assembly (3-1) and the rear motor assembly (3-2) are respectively fixed to the support frame (1). The front lead screw (3-31) in the front lead screw and slider assembly is installed at the output end of the front motor assembly (3-1). The front lead screw nut slider (3-32) in the front lead screw and slider assembly is slidably mounted on a set of guide rods (3-9). The rear lead screw nut slider (3-42) in the rear lead screw and slider assembly is slidably mounted on another set of guide rods (3-9). On the front connecting plate (3-5), the front end is hinged to the front end of the support frame (1). The rear end of the front connecting plate (3-5) and the front end of the rear connecting plate (3-6) are both hinged to one end of the first support beam (3-7). The rear end of the rear connecting plate (3-6) is hinged to one end of the second support beam (3-8). The other end of the first support beam (3-7) is hinged to the front nut slider (3-32), and the other end of the second support beam (3-8) is hinged to the rear nut slider (3-42). The front connecting plate (3-5) is located above the two head springs (2-3), and the rear connecting plate (3-6) is located above the two tail springs (2-4).

2. The waverider variant mechanism based on a dual-drive crank-slider according to claim 1, characterized in that: The supporting frame (1) includes a multi-level frame body (1-1) and two connecting beams (1-2), wherein the two connecting beams (1-2) are arranged side by side, the multi-level frame body (1-1) is arranged along the axial direction of the wave rider, and the bottom end of each level of frame body (1-1) is fixed to the two connecting beams (1-2), and the front part of the supporting frame (1) has a tapered structure.

3. The waverider variant mechanism based on a dual-drive crank-slider according to claim 2, characterized in that: The inner side of the multi-level frame main body (1-1) is respectively equipped with a front motor adapter (3-12), a front bearing housing (3-13), a rear motor adapter, and a rear bearing housing. The front motor assembly (3-1) is fixed on the front motor adapter (3-12), and the rear motor assembly (3-2) is fixed on the rear motor adapter. The front lead screw (3-31) and the rear lead screw (3-41) are respectively rotatably mounted on the front bearing housing (3-13) and the rear bearing housing through the bearing assembly.

4. The waverider variant mechanism based on a dual-drive crank-slider according to claim 3, characterized in that: The front lead screw (3-31) and the front bearing housing (3-13) are rotatably connected by face-to-face angular contact ball bearings (3-11), as are the rear lead screw (3-41) and the rear bearing housing.

5. A waverider variant mechanism based on a dual-drive crank-slider according to claim 1, characterized in that: Each nut slider is equipped with a linear bearing (3-10) between it and its corresponding guide rod (3-9).

6. The waverider variant mechanism based on a dual-drive crank-slider according to claim 1, characterized in that: The cover includes an upper cover (2-11) and a tail cover (2-12), wherein the upper cover (2-11) covers the upper part of the support frame (1), and the tail cover (2-12) is located behind the support frame (1) and is fixedly connected to the tail end of the upper cover (2-11).

7. The waverider variant mechanism based on a dual-drive crank-slider according to claim 1, characterized in that: The front parts of the two tail spring clips (2-4) overlap with the rear parts of the two head spring clips (2-3) in a one-to-one correspondence.

8. The waverider variant mechanism based on a dual-drive crank-slider according to claim 1, characterized in that: Each set of guide rods (3-9) contains two guide rods (3-9) arranged in parallel.

9. A waverider variant mechanism based on a dual-drive crank-slider according to claim 1, characterized in that: Each piece of spring is fixed to one side of the support frame (1) by a number of screws.

10. A waverider variant mechanism based on a dual-drive crank-slider according to claim 3, characterized in that: The head spring (2-3) and tail spring (2-4) are both made of spring steel.

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