Flight-oriented fan wing trailing edge adjusting device

Abstract

The invention discloses a flight-oriented fan wing trailing edge adjusting device, and relates to the technical field of aircrafts, the flight-oriented fan wing trailing edge adjusting device comprises a trailing edge angle adjusting mechanism, a rectification angle adjusting mechanism, a circular end plate and a rectification plate, the trailing edge angle adjusting mechanism comprises a steering engine, a first connecting rod mechanism, a trailing edge plate and a rotating shaft; the steering engine is fixedly installed on the circular end plate and controls the rear edge plate to move through the first connecting rod mechanism, the rotating shaft is arranged on one side of the rear edge plate, and the rear edge plate is hinged to the rectifying plate through the rotating shaft. By freely adjusting the trailing edge angle and the rectification angle, the aerodynamic force of the fan-wing aircraft is changed, the lift force and thrust distribution is improved, the aerodynamic effect is enhanced, the energy consumption is reduced, and the flight efficiency is improved. The fan wing trailing edge adjusting device is applied to a serial fan wing, forward coupling gain between two wings is achieved by changing the size of a trailing edge angle and a rectification angle, different flight conditions are met, various flight requirements are flexibly met, and the load performance and the endurance are optimized.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft, and in particular to a flying wing trailing edge regulating device. Background Art

[0002] A fan-wing aircraft is a flying device that uses the rotation of a cross-flow fan to draw incoming air into the fan to accelerate it and form an eccentric vortex, thereby generating lift and thrust. Due to its characteristics of short takeoff and low speed and large load, it has received increasing attention in the field of aircraft research in recent years.

[0003] The distribution of lift and thrust of a fan wing is affected by its airfoil structure, and the main structural parameters are the trailing edge angle and the rectification angle. Increasing the trailing edge angle increases lift, while decreasing the rectification angle increases thrust. In a fan-wing aircraft, such as the cross-flow fan wing device proposed in CN107826245A, the bottom groove of the airfoil is fixed, and in actual flight, the aerodynamic force can only be changed by the rotation speed, and the lift and thrust cannot be freely changed, making it difficult to adapt to different flight conditions.

[0004] In the tandem fan-wing layout, there is airflow coupling between the front and rear wings, which mainly affects the formation and stability of the eccentric vortex on the rear wing, resulting in changes in the lift and thrust at the trailing edge. The tandem layout in patent CN 104276284 A only studies vertical take-off and landing, and has little to do with lift and thrust distribution. Applying the fan-wing trailing edge adjustment device to the tandem fan-wing can better adapt to various flight conditions. Summary of the invention

[0005] The present invention provides a flight-oriented fan-wing trailing edge regulating device, which can effectively improve the lift thrust distribution of a fan-wing aircraft, adapt to various flight modes, save energy consumption, and improve flight efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides a flight-oriented fan wing trailing edge adjustment device, including a trailing edge angle adjustment mechanism, a rectification angle adjustment mechanism, a circular end plate and a rectification plate, the trailing edge angle adjustment mechanism including a servo, a first connecting rod mechanism, a trailing edge plate and a rotating shaft; the servo is fixedly mounted on the circular end plate, the servo controls the movement of the trailing edge plate through the first connecting rod mechanism, the rotating shaft is arranged on one side of the trailing edge plate, and the trailing edge plate is hinged to the rectification plate through the rotating shaft; the rectification angle adjustment mechanism includes an electric push rod and a second connecting rod mechanism; the electric push rod is fixedly connected to the trailing edge plate, and the electric push rod controls the adjustment angle of the rectification plate through the second connecting rod structure.

[0007] In some embodiments, the first connecting rod mechanism includes a driving gear, a driven gear, a gear shaft, an active rod, a transmission rod, a driven rod, and a fixed shaft, wherein the fixed shaft is fixedly mounted on a circular end plate, one end of the driven rod is rotatably mounted on the fixed shaft, the driving gear is fixedly mounted on the output end of the servo, the gear shaft is fixedly mounted on the circular end plate, the driven gear is fixedly sleeved on the gear shaft, the driven gear is meshed with the driving gear, one end of the active rod is fixedly connected to the gear shaft, the other end of the active rod is hinged to the transmission rod, one end of the transmission rod is hinged to the driven rod, one end of the driven rod is rotatably mounted on one end of the fixed shaft, and the other end of the driven rod is fixedly connected to the trailing edge plate.

[0008] In some embodiments, the fixed shaft is fixed at the center of the circular end plate, the driven rod drives the trailing edge plate to rotate around the fixed shaft, the trailing edge plate and the center of the circular end plate are located on the same axis, and the trailing edge plate swings under the arc-shaped inner concave surface of the fixed bottom groove.

[0009] In some embodiments, the trailing edge angle adjustment mechanism further includes a roller, which is rotatably mounted on the edge of the circular end plate, and the surface of the roller is in contact with the inner wall of the trailing edge plate.

[0010] In some embodiments, the trailing edge plate has a fan ring cross-section with a central angle of 60° and an axial length greater than the blade length. The straightening plate is a square straight plate with the same axial length as the trailing edge plate.

[0011] In some embodiments, the second connecting rod mechanism includes a bolt bracket, a movable rod, a swivel connecting rod, a support shaft, a ball joint connecting rod and a ball joint support. The bolt bracket is fixedly mounted on the trailing edge plate, the electric push rod is fixedly mounted on the trailing edge plate through the bolt bracket, one end of the movable rod is fixedly mounted on the output end of the electric push rod, the support shaft is fixedly mounted on the surface of the trailing edge plate, the swivel connecting rod is rotatably connected to the support shaft, one end of the swivel connecting rod is hinged to the movable rod, the other end of the swivel connecting rod is connected to the ball joint connecting rod through a ball joint bearing, one end of the ball joint connecting rod is connected to the ball joint support through a ball joint bearing, and the ball joint support is fixedly mounted on the rectifier plate.

[0012] In some embodiments, the number of the support shafts is at least two, the straight line where the two support shafts are located is parallel to the moving rod and the rectifier plate, and the rotary connecting rod is L-shaped.

[0013] In some embodiments, the angle between the line connecting the trailing edge point of the trailing edge plate to the center point of the arc and the horizontal line passing through the center of the arc is the trailing edge angle β, the angle between the straightening plate and the horizontal plane is the straightening angle γ, the trailing edge angle β is 0 to 60°, and the straightening angle γ is 0 to 90°.

[0014] In some embodiments, when the trailing edge angle β=0°, the highest point of the trailing edge plate is on a horizontal line passing through the center of the circular end plate, and when the trailing edge angle β=60°, the trailing edge point of the trailing edge plate is on a vertical line passing through the center of the circular end plate.

[0015] In some embodiments, the rectification angle γ is in the range of 0 to 90°. When the rectification angle γ=0°, the rectification plate is perpendicular to the horizontal line. When the rectification angle γ=90°, the rectification plate is parallel to the horizontal line.

[0016] Compared with the related art, the flight-oriented fan wing trailing edge adjustment device provided by the present invention has the following beneficial effects:

[0017] The present invention provides a flight-oriented fan wing trailing edge adjustment device, which has a simple structure, good stability, high reliability and long service life. The fan wing trailing edge adjustment device changes the aerodynamic force of a fan-wing aircraft by freely adjusting the size of the trailing edge angle and the rectification angle, improves the lift and thrust distribution, enhances the aerodynamic effect, reduces energy consumption and improves flight efficiency. The fan wing trailing edge adjustment device is applied to a tandem fan wing, and by changing the size of the trailing edge angle and the rectification angle, the forward coupling gain between the two wings is achieved, different flight conditions are met, a variety of flight requirements can be flexibly responded to, and the load performance and endurance are optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the axonometric structure of the fan blade trailing edge adjustment device of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the trailing edge angle adjustment mechanism of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the commutation angle adjustment mechanism of the present invention;

[0021] Figure 4 It is a schematic diagram of the coupling effect between the front and rear wings of a tandem twin-wing aircraft;

[0022] Figure 5 It is a simulation diagram of lift change when the trailing edge angle β changes from 30° to 70°;

[0023] Figure 6 It is a simulation diagram of thrust change when the trailing edge angle β changes from 30° to 70°;

[0024] Figure 7 It is a simulation diagram of lift change when the leading edge opening angle is 40° and the trailing edge angle β changes from 30° to 70°;

[0025] Figure 8 It is a simulation diagram of thrust change when the leading edge opening angle is 40° and the trailing edge angle β changes from 30° to 70°;

[0026] Fig. 9 Schematic diagram of the simulation of aerodynamic changes when the rectification angle γ changes from 10° to 75°.

[0027] Numbers in the figure: 1. trailing edge angle adjustment mechanism; 2. rectifier angle adjustment mechanism; 3. servo; 4. driving gear; 5. driven gear; 6. gear shaft; 7. driving rod; 8. transmission rod; 9. driven rod; 10. fixed shaft; 11. trailing edge plate; 12. rotating shaft; 13. rectifier plate; 14. roller; 15. electric push rod; 16. bolt bracket; 17. moving rod; 18. slewing connecting rod; 19. supporting shaft; 20. ball joint connecting rod; 21. ball joint support; 22. circular end plate; 23. fixed bottom groove; 31. front wing; 32. rear wing. DETAILED DESCRIPTION

[0028] Embodiment 1

[0029] This embodiment provides a flight-oriented fan wing trailing edge adjustment device, such as Figure 1-4 As shown, the present invention includes a trailing edge angle adjustment mechanism 1, a rectification angle adjustment mechanism 2, a circular end plate 22 and a rectification plate 13, wherein the trailing edge angle adjustment mechanism 1 includes a steering gear 3, a first connecting rod mechanism, a trailing edge plate 11 and a rotating shaft 12; the steering gear 3 is fixedly mounted on the circular end plate 22, and the steering gear 3 controls the movement of the trailing edge plate 11 through the first connecting rod mechanism, the rotating shaft 12 is arranged on one side of the trailing edge plate 11, and the trailing edge plate 11 is hinged to the rectification plate 13 through the rotating shaft 12; the rectification angle adjustment mechanism 2 includes an electric push rod 15 and a second connecting rod mechanism; the electric push rod 15 is fixedly connected to the trailing edge plate 11, and the electric push rod 15 controls the rectification plate 13 to adjust the angle through the second connecting rod mechanism.

[0030] In this embodiment, the servo 3 in the trailing edge angle adjustment mechanism 1 drives the trailing edge plate 11 to rotate through the first connecting rod mechanism, thereby adjusting the size of the trailing edge angle; the electric push rod 15 in the rectification angle adjustment mechanism 2 is retracted and extended to drive the rectification plate 13 to rotate through the second connecting rod mechanism, thereby adjusting the size of the rectification angle. By changing the size of the trailing edge angle and the rectification angle, the forward coupling gain between the two wings is achieved, different flight conditions are met, and various flight requirements can be flexibly responded to, and the load performance and endurance are optimized.

[0031] Embodiment 2

[0032] Based on the first embodiment, Figure 2As shown, the first connecting rod mechanism of the present embodiment includes a driving gear 4, a driven gear 5, a gear shaft 6, an active rod 7, a transmission rod 8, a driven rod 9, and a fixed shaft 10. The fixed shaft 10 is fixedly mounted on a circular end plate 22, and one end of the driven rod 9 is rotatably mounted on the fixed shaft 10. The driving gear 4 is fixedly mounted on the output end of the servo 3, the gear shaft 6 is fixedly mounted on the circular end plate 22, the driven gear 5 is fixedly sleeved on the gear shaft 6, and the driven gear 5 is meshed with the driving gear 4. One end of the active rod 7 is fixedly connected to the gear shaft 6, and the other end of the active rod 7 is hinged to the transmission rod 8, and one end of the transmission rod 8 is hinged to the driven rod 9. One end of the driven rod 9 is rotatably mounted on one end of the fixed shaft 10, and the other end of the driven rod 9 is fixedly connected to the trailing edge plate 11.

[0033] In this embodiment, the characteristic of the servo 3 itself that it can accurately control the angle of rotation is utilized, and combined with the interconnection and fixed installation of the active rod 7, the transmission rod 8, the driven rod 9 and the fixed shaft 10 on the circular end plate 22, a relatively stable mechanical structure system is formed, and the position of the trailing edge plate 11 can be accurately controlled through the transmission ratio and geometric relationship between the components. The components restrict and cooperate with each other, sharing the forces in the movement process. Compared with a single transmission structure, it can better cope with forces in different directions, reduce the risk of structural damage caused by uneven force, vibration and other factors, and ensure the reliability of the entire device during long-term operation. During the flight, it will be affected by various complex external forces such as airflow. This connecting rod mechanism can stably convert the control signal of the servo 3 into the corresponding action of the wing trailing edge plate 11, and ensure that the structure will not easily fail due to vibration, airflow impact, etc. during flight, so as to maintain the stable flight attitude of the aircraft.

[0034] Embodiment 3

[0035] Based on the second embodiment, Figure 2 As shown, the fixed shaft 10 of this embodiment is fixed at the center of the circular end plate 22, and the driven rod 9 drives the trailing edge plate 11 to rotate around the fixed shaft 10. The center of the trailing edge plate 11 and the circular end plate 22 are located on the same axis, and the trailing edge plate 11 swings under the arc-shaped inner concave surface of the fixed bottom groove 23.

[0036] In this embodiment, the trailing edge plate 11 is arranged concentrically with the arc-shaped inner concave surface of the fixed bottom groove 23, and swings below the arc-shaped inner concave surface of the fixed bottom groove 23. During the swinging process of the trailing edge plate 11, it can always maintain a matching relationship with the circular end plate 22. The arc-shaped inner concave surface can guide the airflow to flow through the trailing edge plate 11 more smoothly, reduce the turbulence and fluctuation of the airflow, and improve the stability of the airflow. This is of great significance for improving the performance of the fan blade and reducing noise.

[0037] Embodiment 4

[0038] Based on the first embodiment, Figure 2 As shown, the trailing edge angle adjustment mechanism 1 of this embodiment further includes a roller 14 , which is rotatably mounted on the edge of the circular end plate 22 , and the surface of the roller 14 is in contact with the inner wall of the trailing edge plate 11 .

[0039] In this embodiment, when the trailing edge plate 11 is in motion, especially when it rotates and swings around the fixed axis 10, it contacts the roller 14. Since the roller 14 can rotate, the friction form between the trailing edge plate 11 and the roller 14 is changed from sliding friction to rolling friction. The friction force of rolling friction is much smaller than that of sliding friction, which greatly reduces the resistance encountered by the trailing edge plate 11 during movement. In addition, during the operation of the fan blade, the trailing edge plate 11 may be affected by external forces such as airflow and have a tendency to displace or deform. The roller 14 can limit the movement of the trailing edge plate 11 within a certain range, play a guiding role, and ensure that the trailing edge plate 11 moves along a predetermined trajectory. In addition, since the roller 14 bears most of the friction force during the movement of the trailing edge plate 11, the wear caused by the direct contact between the trailing edge plate 11 and the circular end plate 22 is reduced. For the trailing edge plate 11 and the circular end plate 22, this helps to extend their service life.

[0040] Embodiment 5

[0041] Based on the first embodiment, Figure 2 As shown, the trailing edge plate 11 of this embodiment has a fan ring cross-section with a central angle of 60° and an axial length greater than the blade length. The straightening plate 13 is a square straight plate with the same axial length as the trailing edge plate 11.

[0042] In this embodiment, it is clear that the cross-sectional shape of the trailing edge plate 11 is a fan ring. The setting of this specific shape provides a basis for the installation and functional realization of the trailing edge plate 11 in the fan wing structure. The fan ring shape can better match the overall shape of the fan wing, so that the trailing edge plate 11 is smoother and more efficient when adjusting the trailing edge angle. The 60° central angle can limit the swing amplitude of the trailing edge plate 11 to a certain extent, and also provide a clear range for the adjustment of the trailing edge angle. The axial extension length of the trailing edge plate 11 is slightly greater than the blade length, which facilitates the connection between the trailing edge plate 11 and the first transmission mechanism. The square straight plate can better guide the airflow, reduce the turbulence and fluctuation of the airflow, and improve the stability of the airflow. The axial extension length of the rectifying plate 13 is the same as that of the trailing edge plate 11. This setting can ensure the coordination and consistency of the rectifying plate 13 and the trailing edge plate 11 during the working process. When the trailing edge plate 11 adjusts the trailing edge angle, the rectifying plate 13 can adjust the rectification angle accordingly to achieve the best airflow rectification effect.

[0043] Embodiment 6

[0044] Based on the first embodiment, Figure 3 As shown, the second connecting rod mechanism of this embodiment includes a bolt bracket 16, a movable rod 17, a swivel connecting rod 18, a support shaft 19, a ball joint connecting rod 20 and a ball joint support 21. The bolt bracket 16 is fixedly mounted on the trailing edge plate 11, and the electric push rod 15 is fixedly mounted on the trailing edge plate 11 through the bolt bracket 16. One end of the movable rod 17 is fixedly mounted on the output end of the electric push rod 15. The support shaft 19 is fixedly mounted on the surface of the trailing edge plate 11. The swivel connecting rod 18 is rotatably connected to the support shaft 19. One end of the swivel connecting rod 18 is hinged to the movable rod 17, and the other end of the swivel connecting rod 18 is connected to the ball joint connecting rod 20 through a ball joint bearing. One end of the ball joint connecting rod 20 is connected to the ball joint support 21 through a ball joint bearing, and the ball joint support 21 is fixedly mounted on the rectifier plate 13.

[0045] In this embodiment, the output end of the electric push rod 15 telescopically drives the moving rod 17 to move forward and drives the rotating connecting rod 18 to rotate around the support shaft 19. One end 20 of the ball joint connecting rod is connected to the rotating connecting rod 18 through a ball joint bearing, and the other end is sleeved on the ball joint support 21 on the rectifier plate 13 and involves the rectifier plate 13 to rotate around the rotating shaft 12, thereby adjusting the size of the rectification angle. The setting of the ball joint connection and the rotating connecting rod 18 enables the rectifier plate 13 to adapt to complex movement requirements. During the flight, the fan wing will be affected by various external forces, such as the impact and vibration of the airflow, etc. These external forces may cause the movement direction and angle of the rectifier plate 13 to change. The ball joint connection can allow the rectifier plate 13 to rotate freely in multiple directions, thereby adapting to these complex movement requirements, ensuring that the rectifier plate 13 can always effectively adjust the airflow, and improving the stability and reliability of the fan wing. The setting structure of the entire second connecting rod mechanism is compact, occupies a small space, and is suitable for installation in the limited space of the fan wing. At the same time, the various components are tightly connected through bolts, hinges and ball joints to ensure the stability and reliability of the mechanism during operation.

[0046] Embodiment 7

[0047] On the basis of Example 6, Figure 3 As shown, in this embodiment, the number of the support shafts 19 is at least two, the straight line where the two support shafts 19 are located is parallel to the moving rod 17 and the rectifying plate 13, and the rotary connecting rod 18 is L-shaped.

[0048] In this embodiment, when the swivel link 18 rotates due to the force transmitted from the moving rod 17 during operation, the multiple support shafts 19 can share the load, reducing the pressure on a single support shaft 19, thereby reducing the risk of damage to the support shaft 19 due to excessive force. The swivel link 18 is L-shaped, which can change the direction of force transmission, making it more suitable for converting the linear motion of the moving rod 17 into a rotational motion suitable for angle adjustment of the rectifier plate 13.

[0049] Embodiment 8

[0050] like Figure 2 As shown, in this embodiment, the angle between the line connecting the trailing edge point of the trailing edge plate 11 to the center point of the arc and the horizontal line passing through the center of the arc is the trailing edge angle β, and the angle between the rectifying plate 13 and the horizontal plane is the rectifying angle γ. The trailing edge angle β is 0 to 60°, and the rectifying angle γ is 0 to 90°. When the trailing edge angle β=0°, the highest point of the trailing edge plate 11 is on the horizontal line passing through the center of the circular end plate 22. When the trailing edge angle β=60°, the trailing edge point of the trailing edge plate 11 is on the vertical line passing through the center of the circular end plate 22. The rectifying angle γ is 0 to 90°. When the rectifying angle γ=0°, the rectifying plate 13 is parallel to the horizontal line. When the rectifying angle γ=90°, the rectifying plate 13 is perpendicular to the horizontal line.

[0051] In this embodiment, during the design phase, the appropriate range of the trailing edge angle β and the rectification angle γ can be determined according to different flight requirements and aerodynamic principles to optimize the performance of the fan wing. During the manufacturing process, the angles of the trailing edge plate 11 and the rectification plate 13 can be ensured to meet the design requirements through precise processing and assembly. During use, the operator can adjust the two angles through the adjustment mechanism according to the actual flight situation to achieve the best flight effect.

[0052] Specific conditions of the trailing edge angle β:

[0053] When the trailing edge angle β=0°, the highest point of the trailing edge plate 11 is on the horizontal line passing through the center of the circular end plate 22. At this time, the high-speed airflow accelerated by the rotation of the impeller inside the wing is discharged horizontally backward from above the trailing edge point, the wing thrust is increased, and the lift is reduced. This state may be suitable for some situations that require low resistance and high-speed flight, or situations where the thrust needs to be increased or the lift needs to be reduced during the landing phase. For example, when the aircraft takes off, in order to reach a safe altitude as quickly as possible, the trailing edge angle β can be adjusted to a smaller value, increasing the thrust and increasing the flight speed, so that the aircraft can accelerate faster. When cruising at high speed, in order to increase thrust and improve fuel efficiency, the trailing edge angle β can also be kept at a smaller angle.

[0054] When the trailing edge angle β=60°, the midpoint of the arc of the trailing edge plate 11 is on the vertical line passing through the center of the circular end plate 22, and the flow rate of high-speed airflow discharged after the impeller inside the fan wing rotates increases, and the airflow is discharged obliquely downward to the rear, and part of the thrust is converted into lift, and the thrust is reduced and the lift is increased. This state may be suitable for situations where a larger lift is required, such as in low-speed flight, take-off phase, or when performing some special flight missions. For example, when the aircraft is under a large load, in order to increase the lift, the trailing edge angle β can be adjusted to a larger value, and the reaction force of the high-speed airflow discharged obliquely downward from the tail of the fan wing increases the lift, thereby increasing the carrying capacity of the aircraft.

[0055] Specific state of the rectification angle γ:

[0056] When the rectification angle γ=0°, the rectification plate 13 is perpendicular to the horizontal line, and the rectification effect of the rectification plate 13 on the airflow is the strongest. This state can make the airflow flow more smoothly through the trailing edge of the wing, reduce the turbulence and energy loss of the airflow, and improve the efficiency of the wing. For example, in some situations where efficient flight is required, such as long-distance flights or important missions, the rectification angle γ can be adjusted to 0° to improve the performance and stability of the aircraft.

[0057] When the rectification angle γ=90°, the rectifying plate 13 is parallel to the horizontal line, and the rectifying plate 13 has the least effect on the airflow. This state may be suitable for some situations where a smaller rectification effect is required, such as when performing some special flight actions or in certain specific flight environments. For example, when performing high-speed rolls or sharp turns, in order to reduce the impact of the rectifying plate 13 on the maneuverability of the aircraft, the rectification angle γ can be adjusted to 90° to minimize the interference of the rectifying plate 13 on the airflow.

[0058] like Figure 4 As shown, the fan blade trailing edge adjustment device is respectively installed on the front wing 31 and the rear wing 32 of the tandem wing. The fan blade trailing edge adjustment device controls the deflection of the trailing edge plate 11 and the rectifying plate 13 through the steering gear 3 and the electric push rod 15, that is, controls the size of the fan blade trailing edge angle β and the rectifying angle γ. The rotation of the impeller inside the fan blade will generate high-speed airflow, which flows out from the trailing edge and flows along the rectifying plate to the rear wing. When the front wing trailing edge angle β and the rectifying angle γ are reduced, the front wing exhaust airflow increases and the outflow direction tends to be horizontal, which has an enhancing effect on the trailing edge aerodynamic force.

[0059] like Figure 5-6 As shown, the incoming flow is 4m / s, the rotation speed is 1200rpm, the trailing edge angle β changes from 30° to 70°, the lift continues to increase, and the thrust continues to decrease. Among them, curves of different colors represent different leading edge opening angles.

[0060] like Figure 7-8 As shown, when the incoming flow is 4m / s, the rotation speed is 1200rpm, the leading edge opening angle is 40°, the trailing edge angle β changes from 30° to 70°, the lift continues to increase, and the thrust continues to decrease.

[0061] like Fig. 9 As shown, the incoming flow is 4m / s, the rotation speed is 1200rpm, the rectification angle γ increases from 15° to 75°, the lift continues to increase, and the thrust continues to decrease.

[0062] Therefore, the attitude of the aircraft can be controlled according to the relationship between the angle change of the trailing edge angle β and the rectification angle γ and the aerodynamic force. Working principle: The servo 3 in the trailing edge angle adjustment mechanism 1 drives the active gear 4 to engage the driven gear 5 to rotate, driving the active rod 7 to move, and the active rod 7 is connected to the transmission rod 8 through the slewing pair, so that the transmission rod 8 rotates around the active rod 7, and at the same time drives the driven rod 9 to rotate around the fixed shaft 10, and the trailing edge plate 11 fixed to the driven rod 9 rotates along the roller 14, thereby adjusting the size of the trailing edge angle; the electric push rod 15 in the rectification angle adjustment mechanism 2 is extended and retracted, driving the moving rod 17 to move forward and drive the slewing connecting rod 18 to rotate around the support shaft 19, one end 20 of the ball joint connecting rod is connected to the slewing connecting rod 18 through the ball joint bearing, and the other end is sleeved on the ball joint support 21 on the rectifier plate 13 and involves the rectifier plate 13 to rotate around the slewing shaft 12, thereby adjusting the size of the rectification angle. The flight-oriented wing trailing edge adjustment device realizes free adjustment of the wing trailing edge angle and the rectification angle through the trailing edge angle adjustment mechanism 1 and the rectification angle adjustment mechanism 2, thereby changing the wing aerodynamic force and improving the distribution of lift and thrust to adapt to different flight conditions.

Claims

1. A flight-oriented wing trailing edge adjustment device, comprising a trailing edge angle adjustment mechanism, a rectification angle adjustment mechanism, a circular end plate and a rectification plate, characterized in that: The trailing edge angle adjustment mechanism includes a steering gear, a first connecting rod mechanism, a trailing edge plate and a rotating shaft; The steering gear is fixedly mounted on the circular end plate, and the steering gear controls the movement of the trailing edge plate through a first connecting rod mechanism. The rotating shaft is arranged on one side of the trailing edge plate, and the trailing edge plate is hinged to the rectifier plate through the rotating shaft. The commutation angle adjustment mechanism comprises an electric push rod and a second connecting rod mechanism; The electric push rod is fixedly connected to the trailing edge plate, and the electric push rod controls the rectifier plate to adjust the angle through the second connecting rod structure.

2. A flight-oriented wing trailing edge adjustment device according to claim 1, characterized in that: The first connecting rod mechanism includes a driving gear, a driven gear, a gear shaft, an active rod, a transmission rod, a driven rod, and a fixed shaft. The fixed shaft is fixedly mounted on a circular end plate, one end of the driven rod is rotatably mounted on the fixed shaft, the driving gear is fixedly mounted on the output end of the servo, the gear shaft is fixedly mounted on the circular end plate, the driven gear is fixedly sleeved on the gear shaft, the driven gear is meshed with the driving gear, one end of the active rod is fixedly connected to the gear shaft, the other end of the active rod is hinged to the transmission rod, one end of the transmission rod is hinged to the driven rod, one end of the driven rod is rotatably mounted on one end of the fixed shaft, and the other end of the driven rod is fixedly connected to the trailing edge plate.

3. A flight-oriented wing trailing edge adjustment device according to claim 2, characterized in that: The fixed shaft is fixed at the center of the circular end plate, the driven rod drives the trailing edge plate to rotate around the fixed shaft, the centers of the trailing edge plate and the circular end plate are located on the same axis, and the trailing edge plate swings below the arc-shaped inner concave surface of the fixed bottom groove.

4. The device for adjusting the trailing edge of a wing facing flight according to claim 1, characterized in that: The trailing edge angle adjustment mechanism also includes a roller, which is rotatably mounted on the edge of the circular end plate, and the surface of the roller is in contact with the inner wall of the trailing edge plate.

5. The flight-oriented wing trailing edge adjustment device according to claim 1, characterized in that: The trailing edge plate has a cross-sectional shape of a fan ring, a central angle of 60°, and an axial extension length greater than the blade length. The rectifying plate is a square straight plate, and the axial extension length is the same as that of the trailing edge plate.

6. The flight-oriented wing trailing edge adjustment device according to claim 1, characterized in that: The second connecting rod mechanism includes a bolt bracket, a movable rod, a swivel connecting rod, a support shaft, a ball joint connecting rod and a ball joint support. The bolt bracket is fixedly mounted on the trailing edge plate, the electric push rod is fixedly mounted on the trailing edge plate through the bolt bracket, one end of the movable rod is fixedly mounted on the output end of the electric push rod, the support shaft is fixedly mounted on the surface of the trailing edge plate, the swivel connecting rod is rotatably connected to the support shaft, one end of the swivel connecting rod is hinged to the movable rod, the other end of the swivel connecting rod is connected to the ball joint connecting rod through a ball joint bearing, one end of the ball joint connecting rod is connected to the ball joint support through a ball joint bearing, and the ball joint support is fixedly mounted on the rectifier plate.

7. A flight-oriented wing trailing edge adjustment device according to claim 6, characterized in that: The number of the supporting shafts is at least two, the straight line where the two supporting shafts are located is parallel to the moving rod and the rectifying plate, and the rotary connecting rod is L-shaped.

8. A flight-oriented wing trailing edge adjustment device according to any one of claims 1 to 7, characterized in that: The angle between the line from the trailing edge point of the trailing edge plate to the center point of the arc and the horizontal line passing through the center of the arc is the trailing edge angle β, the angle between the straightening plate and the horizontal plane is the straightening angle γ, the trailing edge angle β is 0 to 60°, and the straightening angle γ is 0 to 90°.

9. The flight-oriented wing trailing edge adjustment device according to claim 8, characterized in that: When the trailing edge angle β=0°, the highest point of the trailing edge plate is on a horizontal line passing through the center of the circular end plate, and when the trailing edge angle β=60°, the trailing edge point of the trailing edge plate is on a vertical line passing through the center of the circular end plate.

10. The flight-oriented wing trailing edge adjustment device according to claim 8, characterized in that: The rectification angle γ is in the range of 0 to 90°. When the rectification angle γ=0°, the rectification plate is perpendicular to the horizontal line. When the rectification angle γ=90°, the rectification plate is parallel to the horizontal line.

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