A variable thickness wing

Abstract

The present invention discloses a variable thickness wing, which relates to the technical field of deformable wings. The wing comprises a wing frame, a power input module, a thickness deformation module, and a flap deformation module. The power input module is installed within the wing frame, and the output end of the power input module is connected to the thickness deformation module and the flap deformation module, respectively. The thickness deformation module is arranged near the leading edge of the wing frame, and the thickness deformation module is installed on both sides of the wing frame. The thickness deformation module can adjust the thickness of the wing frame under the drive of the power input module. One end of the flap deformation module extends to the trailing edge flap connected to the wing frame, and the flap deformation module can adjust the angle of the trailing edge flap under the drive of the power input module. The present invention has a simple overall structure, is easy to operate, and has high control accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of deformable wings, in particular to a variable thickness wing. Background Art

[0002] The wing is the primary lift-generating component of an aircraft, and its size and shape have a significant impact on its aerodynamics and maneuverability. In most cases, a combination of ailerons, elevators, and rudders is all the control surfaces required for a small, powered aircraft. However, with the advancement of aviation technology, more complex wings equipped with flaps and slats have emerged. These auxiliary control surfaces affect the aircraft's aerodynamic characteristics by changing the wing's shape. Variable-thickness wings, based on the use of trailing-edge flaps, modify the cross-sectional shape of the airfoil through a drive mechanism built into the nacelle to alter the aircraft's aerodynamic characteristics. This design allows the wing to change thickness and shape without the aid of leading-edge slats, while maintaining a smooth surface during deformation, reducing the aerodynamic disturbances caused by the deformation. However, existing designs are overly complex and have low control precision, making them difficult to implement. Summary of the Invention

[0003] The purpose of the present invention is to provide a variable thickness wing to solve the problems existing in the above-mentioned prior art, with a simple overall structure, easy operation and high control accuracy.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a variable-thickness wing, comprising a wing outer frame, a power input module, a thickness deformation module, and a flap deformation module. The power input module is installed in the wing outer frame, and the output end of the power input module is respectively connected to the thickness deformation module and the flap deformation module. The thickness deformation module is arranged near the leading edge of the wing outer frame, and the thickness deformation module is installed on both sides of the wing outer frame. The thickness deformation module can adjust the thickness of the wing outer frame under the drive of the power input module. One end of the flap deformation module extends to the trailing edge flap connected to the wing outer frame, and the flap deformation module can adjust the angle of the trailing edge flap under the drive of the power input module.

[0006] Preferably, the wing outer frame includes an arc section, a plane section, a sloped section, a connecting section and the trailing edge flap, the upper end of the arc section is used to connect the thickness deformation module, the lower end of the arc section is integrally connected to one end of the plane section, the other end of the plane section is integrally connected to one end of the connecting section, the other end of the connecting section is integrally connected to the lower end surface of the sloped section, one end of the sloped section extends in a direction close to the trailing edge flap, the other end of the sloped section extends in a direction away from the trailing edge flap, one end of the trailing edge flap is connected to the connecting section, and the other end of the trailing edge flap extends in a direction away from the connecting section.

[0007] Preferably, the trailing edge flap includes a flap front section and a flap wingtip, one end of the flap front section is provided with two connecting protrusions, the connecting protrusion located at the lower part is rotatably connected to the lower end surface of the planar section, and the connecting protrusion located at the upper part is rotatably connected to the flap deformation module, the other end of the flap front section is rotatably connected to one end of the flap wingtip, the other end of the flap wingtip is a free end, and the end of the flap wingtip away from the free end is also rotatably connected to the end of the flap deformation module.

[0008] Preferably, the power input module includes a drive motor and two power input gears, both of which are installed in the groove on the upper end surface of the planar segment. The two power input gears are symmetrically arranged on both sides of the wing outer frame, and both power input gears are driven by the drive motor.

[0009] Preferably, the thickness deformation modules are in two groups, and the two groups of thickness deformation modules are symmetrically arranged and respectively connected to different power input gears. The thickness deformation modules include a thickness driving gear bar, a first connecting rod, an airfoil front rod and an airfoil rear rod. The gear portion of the thickness driving gear bar is engaged with the power input gear, and the straight rod portion of the thickness driving gear bar is rotatably connected to the lower end of the first connecting rod. Before the thickness is changed, the straight rod portion of the thickness driving gear bar is parallel to the plane segment, and the upper end of the first connecting rod is rotatably connected to the lower end of the airfoil rear rod. The upper end of the first connecting rod is inclined toward the direction close to the trailing edge flap, and the wing rear rod includes an arc-shaped connecting rod and a straight connecting rod. One end of the arc-shaped connecting rod is rotatably connected to the first connecting rod, and the other end of the arc-shaped connecting rod is integrally connected to one end of the straight connecting rod. The other end of the straight connecting rod is rotatably connected to one end of the inclined surface segment. An arc-shaped hole is provided on the arc-shaped connecting rod, and the lower end of the wing front rod is rotatably connected to one end of the arc segment. The upper end of the wing front rod is movably connected to the arc hole. The wing front rod is arc-shaped.

[0010] Preferably, a front wing panel is installed between the two front wing rods, and a rear wing panel is installed between the two rear wing rods. One side of the front wing panel is rotatably connected to the arc segment, the other side of the front wing panel is rotatably connected to one side of the rear wing panel, and the other side of the rear wing panel is rotatably connected to the inclined segment.

[0011] Preferably, a pin is fixed to one end of the front rod of the wing, and the pin is slidably connected to the arc-shaped hole.

[0012] Preferably, the flap deformation module includes a flap driving gear rod, a second connecting rod and a third connecting rod, the gear portion of the flap driving gear rod is meshed with the power input gear, the straight rod portion of the flap driving gear rod is rotatably connected to the upper end of the second connecting rod, and before the flap changes angle, the straight rod portion of the flap driving gear rod is parallel to the plane section, the lower end of the second connecting rod is rotatably connected to one end of the flap front section, the upper end of the third connecting rod is rotatably connected to the lower end surface of the plane section, the lower end of the third connecting rod is rotatably connected to the lower end surface of the flap wingtip, and the connection point between the third connecting rod and the flap wingtip is away from the free end of the flap wingtip.

[0013] Compared with the prior art, the present invention has achieved the following technical effects:

[0014] The variable thickness wing provided by the present invention installs a power input module in the wing outer frame. The wing outer frame serves to connect the thickness deformation module and the flap deformation module, as well as to provide overall support. The output end of the power input module is respectively connected to the thickness deformation module and the flap deformation module, and then the power output by the power input module is respectively distributed to the thickness deformation module and the flap deformation module. Then, the two parts of the mechanism realize the corresponding deformation function. The thickness deformation module is arranged near the leading edge of the wing outer frame, and the thickness deformation module is installed on both sides of the wing outer frame. The thickness deformation module can adjust the thickness of the wing outer frame under the drive of the power input module. The angle of the flap can be adjusted, and one end of the flap deformation module extends to the trailing edge flap connected to the outer frame of the wing, and the flap deformation module can adjust the angle of the trailing edge flap under the drive of the power input module. The overall structure is simple and convenient for manufacturing and maintenance. At the same time, by changing the rotation angle of the power input module, the power input gear of the power input module and the toothless flap drive gear rod, as well as the power input gear of the power input module and the toothless thickness drive gear rod are in different meshing positions, thereby achieving precise control of the wing deformation state. In addition, the trailing edge flap is combined with the variable thickness wing to achieve a unified drive design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the variable thickness wing provided by the present invention before deformation;

[0017] Figure 2 for Figure 1 The main view;

[0018] Figure 3 A schematic structural diagram of the variable thickness wing provided by the present invention when it is in a maximum deformation state;

[0019] Figure 4 for Figure 3 Schematic diagram at another angle;

[0020] Figure 5 for Figure 3 The main view;

[0021] Figure 6 A front view of the variable thickness wing provided by the present invention in an intermediate deformation state;

[0022] Figure 7 Schematic diagram of the structure of the thickness deformation module and the flap deformation module in the present invention;

[0023] Figure 8 Schematic diagram of the structure of the thickness deformation module, flap deformation module and trailing edge flap in the present invention;

[0024] In the figure: 1-arc segment, 2-plane segment, 3-inclined segment, 4-connecting segment, 5-power input gear, 6-thickness drive gear rod, 7-first connecting rod, 8-wing surface rear rod, 9-flap drive gear rod, 10-second connecting rod, 11-third connecting rod, 12-wing surface front rod, 13-flap wingtip, 14-flap front section, 15-front wing panel, 16-rear wing panel. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The purpose of the present invention is to provide a variable thickness wing to solve the problems existing in the prior art, with a simple overall structure, easy operation and high control accuracy.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-8 As shown, this embodiment provides a variable thickness wing, including a wing outer frame, a power input module, a thickness deformation module and a flap deformation module. The power input module is installed in the wing outer frame. The wing outer frame connects the thickness deformation module and the flap deformation module, and serves as an overall support. The output end of the power input module is respectively connected to the thickness deformation module and the flap deformation module, and then the power output by the power input module is respectively distributed to the thickness deformation module and the flap deformation module. Then, the two parts of the mechanism realize the corresponding deformation function. The thickness deformation module is arranged near the leading edge of the wing outer frame, and the thickness deformation module is installed on both sides of the wing outer frame, and the thickness deformation module can be The thickness of the wing outer frame is adjusted under the drive of the power input module, one end of the flap deformation module extends to the trailing edge flap connected to the wing outer frame, and the flap deformation module can adjust the angle of the trailing edge flap under the drive of the power input module. The overall structure is simple and convenient for manufacturing and maintenance. At the same time, by changing the rotation angle of the power input module, the power input gear 5 of the power input module and the toothless flap driving gear rod 9, as well as the power input gear 5 of the power input module and the toothless thickness driving gear rod 6 are in different meshing positions, thereby achieving precise control of the wing deformation state, and adopting a design that combines the trailing edge flap with the variable thickness wing and adopts a unified drive design.

[0029] Specifically, the wing outer frame includes an arc segment 1, a plane segment 2, a sloped segment 3, a connecting segment 4 and a trailing edge flap. The upper end of the arc segment 1 is used to connect the thickness deformation module, and the lower end of the arc segment 1 is integrally connected to one end of the plane segment 2. The arc segment 1 plays the role of connecting the thickness deformation module. The other end of the plane segment 2 is integrally connected to one end of the connecting segment 4, and the other end of the connecting segment 4 is integrally connected to the lower end face of the sloped segment 3. One end of the sloped segment 3 extends toward the direction approaching the trailing edge flap, and the other end of the sloped segment 3 extends away from the trailing edge flap. One end of the trailing edge flap is connected to the connecting segment 4, and the other end of the trailing edge flap extends away from the connecting segment 4, forming an overall frame structure of the variable thickness flap to improve support stability.

[0030] The trailing edge flap includes a flap front section 14 and a flap wingtip 13. One end of the flap front section 14 is provided with two connecting protrusions, the connecting protrusion located at the lower portion is rotatably connected to the lower end surface of the plane section 2, and the connecting protrusion located at the upper portion is rotatably connected to the flap deformation module, and then can be rotated under the drive of the flap deformation module to achieve angle adjustment, the other end of the flap front section 14 is rotatably connected to one end of the flap wingtip 13, and the other end of the flap wingtip 13 is a free end, and the end of the flap wingtip 13 away from the free end is also rotatably connected to the end of the flap deformation module, so that the flap wingtip 13 can change its angle as the flap deformation module moves. At the same time, the flap wingtip 13 can also move simultaneously with the flap front section 14.

[0031] The power input module includes a drive motor and two power input gears 5, both of which are installed in the groove on the upper end surface of the plane section 2. The two power input gears 5 are symmetrically arranged on both sides of the wing outer frame, and the two power input gears 5 are driven by the drive motor to realize power provision.

[0032] There are two groups of thickness deformation modules, which are symmetrically arranged and respectively connected to different power input gears 5. The thickness deformation modules include a thickness driving gear rod 6, a first connecting rod 7, a front wing rod 12 and a rear wing rod 8. The gear portion of the thickness driving gear rod 6 is engaged with the power input gear 5 and can rotate under the drive of the power input gear 5. The straight rod portion of the thickness driving gear rod 6 is rotated to connect the lower end of the first connecting rod 7. The straight rod portion of the thickness driving gear rod 6 before the thickness changes is parallel to the plane segment 2, and the upper end of the first connecting rod 7 is rotated. The lower end of the rear rod 8 of the wing surface is rotatably connected to the lower end of the first connecting rod 8, and the upper end of the first connecting rod 7 is inclined toward the direction close to the trailing edge flap. The rear rod 8 of the wing surface includes an arc-shaped connecting rod and a straight connecting rod. One end of the arc-shaped connecting rod is rotatably connected to the first connecting rod 7, and the other end of the arc-shaped connecting rod is integrally connected to one end of the straight connecting rod. The other end of the straight connecting rod is rotatably connected to one end of the inclined surface segment 3. An arc-shaped hole is provided on the arc-shaped connecting rod. The lower end of the front rod 12 of the wing surface is rotatably connected to one end of the arc segment 1, and the upper end of the front rod 12 of the wing surface is movably connected to the arc-shaped hole. The front rod 12 of the wing surface is arc-shaped. When the driving motor drives the power input gear 5 to rotate, the gear part of the thickness driving gear rod 6 is engaged with the outer periphery of the power input gear 5, and the power input gear 5 drives the thickness driving gear rod 6 to rotate, so that the end of the thickness driving gear rod 6 away from the power input gear 5 rotates upward, and drives the first connecting rod 7 to rotate and move. At the same time, the first connecting rod 7 drives the wing surface rear rod 8 to move upward and limits the moving direction and moving stroke of the wing surface rear rod 8 through the cooperation of one end of the wing surface front rod 12 and the arc hole, until one end of the wing surface front rod 12 contacts the end of the arc hole away from the trailing edge flap. At this time, the wing surface rear rod 8 drives one end of the wing surface front rod 12 to rotate upward, so that the wing thickness can be changed.

[0033] A front wing panel 15 is installed between the two wing front rods 12, and a rear wing panel 16 is installed between the two wing rear rods 8. One side of the front wing panel 15 is rotatably connected to the arc segment 1, and the other side of the front wing panel 15 is rotatably connected to one side of the rear wing panel 16, and the other side of the rear wing panel 16 is rotatably connected to the inclined section 3.

[0034] A pin is fixed at one end of the front rod 12 of the wing, and the pin is slidably connected to the arc hole. Through the cooperation of the arc hole and the pin, the rear rod 8 of the wing surface is limited, and the rear rod 8 of the wing surface drives the front rod 12 of the wing surface to rotate.

[0035] The flap deformation module includes a flap drive gear rod 9, a second connecting rod 10 and a third connecting rod 11. The gear portion of the flap drive gear rod 9 is meshed with the power input gear 5. The straight rod portion of the flap drive gear rod 9 is rotatably connected to the upper end of the second connecting rod 10. Before the flap changes angle, the straight rod portion of the flap drive gear rod 9 is parallel to the plane section 2. The lower end of the second connecting rod 10 is rotatably connected to one end of the flap front section 14. The upper end of the third connecting rod 11 is rotatably connected to the lower end surface of the plane section 2. The lower end of the third connecting rod 11 is rotatably connected to the lower end surface of the flap wing tip 13, and the connection point between the third connecting rod 11 and the flap wing tip 13 is away from the free end of the flap wing tip 13. When the driving motor drives the power input gear 5 to rotate, the gear portion of the flap driving rack 9 is meshed with the outer periphery of the power input gear 5, thereby making the power input gear 5 drive the flap driving rack 9 to rotate, realizing that the end of the flap driving rack 9 away from the power input gear 5 rotates downward (and the rotation of the flap driving rack 9 is synchronized with the rotation of the thickness driving rack 6), and drives the second connecting rod 10 to rotate and move, and the second connecting rod 10 drives the flap front section 14 to rotate and adjust the angle. At the same time, due to the cooperative connection between the flap front section 14 and the flap wing tip 13 and the setting of the third connecting rod 11, when the second connecting rod 10 drives the flap front section 14 to rotate, the third connecting rod 11 realizes the rotation of the flap wing tip 13 under the drive of the flap front section 14, thereby making the flap wing tip 13 rotate relative to the flap front section 14 and follow its flap front section 14 to rotate, and the trailing edge flap is designed as a two-end lowering wing, finally realizing the angle adjustment of the trailing edge flap, so that the overall wing completes coordinated deformation.

[0036] When adjusting the wing, by changing the rotation angle of the output shaft of the drive motor, the power input gear 5 and each drive gear rod can be placed in different meshing positions, thereby achieving precise control of the overall deformation state, and combining the trailing edge flap with the variable thickness wing to achieve unified drive.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A variable thickness wing, characterized in that: The invention comprises a wing outer frame, a power input module, a thickness deformation module and a flap deformation module, wherein the power input module is installed in the wing outer frame, and the output end of the power input module is connected to the thickness deformation module and the flap deformation module respectively. The thickness deformation module is arranged near the leading edge of the wing outer frame and is installed on both sides of the wing outer frame. The thickness deformation module can adjust the thickness of the wing outer frame under the drive of the power input module. One end of the flap deformation module extends to the trailing edge flap connected to the wing outer frame, and the flap deformation module can adjust the angle of the trailing edge flap under the drive of the power input module. The wing outer frame includes an arc segment, a plane segment, a slope segment, a connecting segment and the trailing edge flap, the upper end of the arc segment is used to connect the thickness deformation module, the lower end of the arc segment is integrally connected to one end of the plane segment, the other end of the plane segment is integrally connected to one end of the connecting segment, the other end of the connecting segment is integrally connected to the lower end surface of the slope segment, one end of the slope segment extends in a direction close to the trailing edge flap, the other end of the slope segment extends in a direction away from the trailing edge flap, one end of the trailing edge flap is connected to the connecting segment, and the other end of the trailing edge flap extends in a direction away from the connecting segment; The power input module includes a drive motor and two power input gears, both of which are installed in the groove on the upper end surface of the plane segment. The two power input gears are symmetrically arranged on both sides of the wing outer frame, and the two power input gears are driven by the drive motor; The thickness deformation module is divided into two groups, and the two groups of thickness deformation modules are symmetrically arranged and respectively connected to different power input gears. The thickness deformation module includes a thickness driving gear rod, a first connecting rod, an airfoil front rod and an airfoil rear rod. The gear portion of the thickness driving gear rod is engaged with the power input gear, and the straight rod portion of the thickness driving gear rod is rotatably connected to the lower end of the first connecting rod. Before the thickness changes, the straight rod portion of the thickness driving gear rod is parallel to the plane segment, and the upper end of the first connecting rod is rotatably connected to the lower end of the airfoil rear rod, and the The upper end of the first connecting rod is inclined toward the direction close to the trailing edge flap, and the wing rear rod includes an arc-shaped connecting rod and a straight connecting rod. One end of the arc-shaped connecting rod is rotatably connected to the first connecting rod, and the other end of the arc-shaped connecting rod is integrally connected to one end of the straight connecting rod. The other end of the straight connecting rod is rotatably connected to one end of the inclined surface segment. An arc-shaped hole is provided on the arc-shaped connecting rod, and the lower end of the wing front rod is rotatably connected to one end of the arc segment. The upper end of the wing front rod is movably connected to the arc hole. The wing front rod is arc-shaped.

2. The variable thickness wing according to claim 1, characterized in that: The trailing edge flap includes a flap front section and a flap wingtip, one end of the flap front section is provided with two connecting protrusions, the connecting protrusion located at the lower part is rotatably connected to the lower end surface of the planar section, and the connecting protrusion located at the upper part is rotatably connected to the flap deformation module, the other end of the flap front section is rotatably connected to one end of the flap wingtip, the other end of the flap wingtip is a free end, and the end of the flap wingtip away from the free end is also rotatably connected to the end of the flap deformation module.

3. The variable thickness wing according to claim 2, characterized in that: A front wing panel is installed between the two front wing rods, and a rear wing panel is installed between the two rear wing rods. One side of the front wing panel is rotatably connected to the arc segment, the other side of the front wing panel is rotatably connected to one side of the rear wing panel, and the other side of the rear wing panel is rotatably connected to the inclined segment.

4. The variable thickness wing according to claim 3, characterized in that: A pin is fixed to one end of the front wing rod, and the pin is slidably connected to the arc hole.

5. The variable thickness wing according to claim 2, characterized in that: The flap deformation module includes a flap drive gear rod, a second connecting rod and a third connecting rod. The gear portion of the flap drive gear rod is meshed with the power input gear. The straight rod portion of the flap drive gear rod is rotatably connected to the upper end of the second connecting rod. Before the flap changes angle, the straight rod portion of the flap drive gear rod is parallel to the plane section. The lower end of the second connecting rod is rotatably connected to one end of the flap front section. The upper end of the third connecting rod is rotatably connected to the lower end surface of the plane section. The lower end of the third connecting rod is rotatably connected to the lower end surface of the flap wing tip, and the connection point between the third connecting rod and the flap wing tip is away from the free end of the flap wing tip.

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