Variable sweepback wing flight device and flight control system

Abstract

The utility model discloses a variable sweepback wing flight device which comprises a fuselage, wings and a vertical fin, a fixing plate is installed on the fuselage to install a steering engine, the steering engine is used for driving two clamping and locking gears fixedly installed on the wings, and sweepback movement of the wings is controlled in real time; meanwhile, clamping and locking control over the two clamping and locking gears is achieved through a shape memory spring which is fixedly installed on the machine body and can be electrically controlled, and clamping and locking pieces are arranged at the two ends of the shape memory spring; through the structural design of a motor, a conveyor belt, a battery and a belt pulley arranged in the fuselage, the gravity center of the whole flight device is adjusted in real time, and automatic balance control over the variable sweepback wings is achieved. According to the variable sweepback wing flight device, the sweepback movement of the sweepback wings can be accurately and steplessly controlled in real time in the flight process, the task execution capacity of different flight speeds can be considered, the weight can be reduced, and the size of a fuselage can be reduced.

Description

Technical Field

[0001] This application relates to the field of aircraft, and more particularly to a flight device with variable-sweep wings. Background Technology

[0002] A swept wing is a type of wing whose leading and trailing edges are swept backward. Using swept wings can reduce air resistance. However, conventional swept wings have problems such as complex structural design, low reliability, large fuselage size, heavy weight, and, most importantly, the inability to precisely and continuously control the sweep motion in real time according to flight conditions to smoothly switch between different flight missions.

[0003] Therefore, there is an urgent need for a flight device that can achieve real-time and precise stepless control of the swept-wing motion during flight, take into account the mission performance capabilities at different flight speeds, and reduce weight and fuselage size. Utility Model Content

[0004] This application provides a flight device equipped with variable-sweep wings to solve the problems mentioned in the background art.

[0005] An embodiment of this application provides a variable-sweep wing flight device, comprising a fuselage, a wing, and a vertical tail; the wing includes skin, ribs, and high-strength carbon rods; the fuselage includes skin, bulkheads, and stringers; the vertical tail is an all-moving tail fin, which can be used to control the longitudinal and directional maneuvers of the flight device.

[0006] The fuselage is equipped with a fixed plate, on which two servo motors are mounted. There are two wings, symmetrically arranged on both sides of the fuselage. A locking gear is fixedly installed on one end of each wing near the fuselage, and each locking gear is connected to the output shaft of one of the servo motors.

[0007] Furthermore, the servo motor is a servo motor that can drive the locking gear to rotate in both directions, thereby controlling the wing sweep motion.

[0008] Elastic elements are provided at the junction of the two wings. The shape of the elastic elements can elastically match the shape of the wings and the junction. When the wings sweep back, the elastic elements contract and deform to maintain the streamline of the fuselage and wings and improve aerodynamics.

[0009] Furthermore, when the two wings are swept back, they can form a swept C-wing shape. The wings are composed of skin, ribs and spars arranged in an alternating manner, and the sweep angle of the wings is controlled by the sweep system.

[0010] The sweep system consists of a servo motor, locking gears, a shape memory spring, and a locking component. The shape memory spring has conductive ends at both ends, which are connected to the locking component. The shape memory spring is fixedly installed on the fuselage and is located in the middle of the two locking gears at a coplanar position, so that the locking component can lock the two locking gears.

[0011] Furthermore, when energized, the shape memory spring contracts, causing the locking element to disengage from the locking gear and unlock, thus allowing the locking gear to rotate after unlocking. Conversely, when de-energized, the shape memory spring expands, causing the locking element to re-engage with the locking gear and lock, thus preventing the locking gear from rotating after locking.

[0012] Furthermore, the fuselage is equipped with a motor, a conveyor belt, a battery, and a pulley. The battery is bonded to the conveyor belt, which is laid out along the flight direction of the fuselage. The motor is located on the fuselage near the nose, and the pulley is located on the fuselage near the tail. One end of the conveyor belt is connected to the output shaft of the motor, and the other end is connected to the pulley. Driven by the motor, the conveyor belt can move back and forth along the flight direction of the fuselage, thereby adjusting the position of the battery on the conveyor belt in the fuselage in real time, adjusting the center of gravity of the entire flight device in real time, and realizing automatic balance control of the variable sweep wing.

[0013] Furthermore, the motor is a servo motor, capable of rotating in both directions.

[0014] Furthermore, the battery can serve as a power source for the servo motor, the motor, and the shape memory spring.

[0015] Furthermore, in order to make the flight device lighter, high-strength carbon rods are bonded and threaded onto the wing ribs with epoxy resin, thereby connecting the wing ribs to form the wing skeleton; the use of the high-strength carbon rods can not only improve the structural strength of the wing, but also reduce the weight of the wing.

[0016] Furthermore, the outer wing section of the wing is also equipped with at least one sensor that can monitor wing flight parameters such as wing position, angle, speed, strain, pressure, and wind speed in real time.

[0017] On the other hand, this application provides a flight control system for a variable-sweep wing flight device, including a vertical tail control system and a sweep control system. Both the vertical tail control system and the sweep control system operate in coordination under the synchronous control of the flight control system, which uses real-time flight parameters provided by sensors on the outer wing section as the basis for flight control.

[0018] The vertical tail control system controls the vertical tail in real time to achieve longitudinal operation and directional control of the flight device. The sweep control system controls the servos and shape memory springs in real time to precisely control the sweep angle of the wings on both sides of the fuselage. At the same time, the sweep control system can also control the rotation of the motors inside the fuselage in real time, thereby controlling the movement of the conveyor belt, changing the position of the batteries on the conveyor belt and the center of gravity of the entire flight device in real time, and realizing automatic balance control of the variable sweep wings.

[0019] The variable-sweep wing flight device of this application operates as follows: When the flight device needs to transition from a first-speed flight state to a relatively faster second-speed flight state, the flight control system controls the sweep control system to energize and contract the shape memory spring, causing the locking element to disengage from the locking gear and unlock, thus allowing the locking gear to rotate. Then, the sweep control system controls the servo motor to rotate, thereby precisely controlling the sweep angle of the wings on both sides of the fuselage. Once the required sweep angle for the second-speed flight state is reached, the sweep control system de-energizes and expands the shape memory spring, causing the locking element to re-engage with the locking gear and lock it in place, thus preventing the locking gear from rotating. This cyclical real-time control enables real-time, precise, and stepless variable control of the wing sweep angle during flight.

[0020] Conversely, when the flight device needs to transition from the second speed flight state to the relatively slower first speed flight state, the sweep control system energizes the shape memory spring to contract and unlock it, thereby putting the locking gear in a rotatable state. Then, the sweep control system controls the servo motor to rotate. Once the required sweep angle for the first speed flight state is reached, the sweep control system de-energizes the shape memory spring to expand and lock it, thereby putting the locking gear in a non-rotatable state.

[0021] Furthermore, while controlling the wing sweep motion, the sweep control system also synchronously controls the motors in real time according to actual flight needs, thereby controlling the conveyor belt movement, changing the battery position on the conveyor belt and the center of gravity of the entire flight device in real time, and realizing automatic balance control of the variable sweep wing.

[0022] The technical solution of this application has the following advantages or beneficial effects: Because the variable-sweep wing can steplessly adjust the wing sweep angle in real time and simultaneously regulate the motor to achieve automatic balance of the flight device's center of gravity, the flight device can precisely and steplessly change its flight state in real time, maintaining the optimal wing shape, increasing lift and reducing aerodynamic drag, and balancing mission performance at different flight speeds. Furthermore, the simpler swept C-wing mechanical structure reduces the size, weight, and cost of the flight device. This makes the flight device of this application have broad application prospects in fields such as military reconnaissance and maritime rescue. Attached Figure Description

[0023] Figure 1 A three-dimensional structural diagram of the variable-sweep wing flight device provided in an embodiment of this application at its first velocity flight state.

[0024] Figure 2 A schematic diagram of the sweep control system structure of a variable sweep wing flight device in the first speed flight state provided in an embodiment of the application.

[0025] Figure 3 A three-dimensional structural diagram of the variable-sweep wing flight device in its second-speed flight state, as provided in another embodiment of this application.

[0026] Figure 4 A schematic diagram of the sweep control system structure of the variable sweep wing flight device in the second speed flight state, provided in another embodiment of the application.

[0027] Figure 5 A schematic diagram of the control system of a variable-sweep wing flight device provided in an embodiment of this application.

[0028] Figure 6 A schematic diagram of the first velocity flight state of a variable-sweep wing flight device provided in an embodiment of this application.

[0029] Figure 7 A schematic diagram of the second speed flight state of a variable-sweep wing flight device provided in another embodiment of this application.

[0030] Reference numerals: 1. Fuselage; 2. Wing; 3. Wing rib; 4. Vertical tail; 5. Bulkhead; 6. Stringer; 7. Wing spars; 8. Servo; 9. Locking gear; 10. Mounting plate; 11. Shape memory spring; 12. Locking component; 13. Elastic component; 14. Conductive terminal; 15. Motor; 16. Conveyor belt; 17. Battery; 18. High-strength carbon rod Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0032] like Figure 1 As shown, an embodiment of this application discloses a variable-sweep wing flight device, including a fuselage 1, a wing 2, and a vertical tail 4; the wing 2 includes a skin, wing ribs 3, and high-strength carbon rods 18; the fuselage 1 includes a skin, a bulkhead 5, and stringers 6; the vertical tail 4 is an all-moving tail fin, which can be used to control the longitudinal and directional control of the flight device.

[0033] Combination Figure 4As shown, the fuselage 1 is provided with a fixing plate 10, and two servo motors 8 are installed on the fixing plate 10. There are two wings 2, which are symmetrically arranged on both sides of the fuselage 1. A locking gear 9 is fixedly installed on one end of each wing 2 near the fuselage 1. Each locking gear 9 is connected to the output shaft of one of the servo motors 8.

[0034] It is understood that the servo motor 8 is a servo motor that can drive the locking gear 9 to rotate in both directions, thereby realizing the wing sweep motion.

[0035] like Figure 3 , Figure 4 As shown, elastic members 13 are provided at the adjacent positions of the two wings 2. The shape of the elastic members 13 can elastically match the shape of the wings 2 and the adjacent positions. When the wings 2 sweep backward, the elastic members 13 contract and deform to maintain the streamline of the fuselage 1 and the wings 2 and improve aerodynamics.

[0036] When swept back, the two wings 2 can form a swept C-wing shape. The wings 2 are composed of skin, ribs 3 and spars 7 arranged in an alternating manner. The sweep angle of the wings 2 is controlled by the sweep system.

[0037] Combination Figure 1 , Figure 4 As shown, the swept-back system consists of a servo motor 8, a locking gear 9, a shape memory spring 11, and a locking component 12; Figure 2 As shown, the shape memory spring 11 has conductive ends 14 at both ends and is connected to the locking member 12; the shape memory spring 11 is fixedly installed on the body 1 in a manner coplanar with the two locking gears 9 and is located between the two locking gears 9, so that the locking member 12 can lock the two locking gears 9.

[0038] When energized, the shape memory spring 11 contracts, causing the locking member 12 to disengage from the locking gear 9 and unlock, thus allowing the locking gear 9 to rotate after unlocking. Conversely, when de-energized, the shape memory spring 11 expands, causing the locking member 12 to re-engage with the locking gear 9 and lock, thus preventing the locking gear 9 from rotating after locking.

[0039] like Figure 1As shown, the fuselage 1 is equipped with a motor 15, a conveyor belt 16, a battery 17, and a pulley. The battery 17 is bonded to the conveyor belt 16. The conveyor belt 16 is arranged along the flight direction of the fuselage 1. The motor 15 is located on the fuselage 1 near the nose end, and a pulley is located on the fuselage 1 near the tail end. One end of the conveyor belt 16 is connected to the output shaft of the motor 15, and the other end is connected to the pulley. Driven by the motor 15, the conveyor belt 16 can move back and forth along the flight direction of the fuselage 1, thereby adjusting the position of the battery 17 on the conveyor belt 16 in the fuselage 1 in real time, thus adjusting the center of gravity of the entire flight device in real time and realizing the automatic balance control of the variable sweep wing.

[0040] It is understood that the motor 15 is a servo motor, capable of rotating in both directions.

[0041] Optionally, the battery 17 can serve as a power source for the servo motor 8, the motor 15, and the shape memory spring 11.

[0042] like Figure 1 , Figure 3 As shown, in order to make the flight device lighter, high-strength carbon rods 18 are bonded and threaded onto the wing ribs 3 with epoxy resin, thereby connecting the wing ribs 3 to form the skeleton of the wing 2; the use of high-strength carbon rods 18 can not only improve the structural strength of the wing 2, but also reduce the weight of the wing 2.

[0043] Optionally, the outer wing section of the wing 2 is further provided with at least one sensor capable of real-time monitoring wing flight parameters such as wing position, angle, speed, strain, pressure, and wind speed.

[0044] On the other hand, this application provides a flight control system for a variable-sweep wing flight device, including a vertical tail control system and a sweep control system. Both the vertical tail control system and the sweep control system operate in coordination under the synchronous control of the flight control system, which uses real-time flight parameters provided by sensors on the outer wing section as the basis for flight control.

[0045] The vertical tail control system controls the vertical tail in real time to achieve longitudinal operation and directional control of the flight device. The sweep control system controls the servo motor 8 and shape memory spring 11 in real time to precisely control the sweep angle of the wings on both sides of the fuselage. At the same time, the sweep control system can also control the rotation of the motor 15 inside the fuselage in real time, thereby controlling the movement of the conveyor belt 16, changing the position of the battery 17 on the conveyor belt and the center of gravity of the entire flight device in real time, and realizing automatic balance control of the variable sweep wings.

[0046] The variable-sweep wing flight device of this application operates as follows: When the flight device needs to transition from a first-speed flight state to a relatively faster second-speed flight state, the flight control system controls the sweep control system to energize and contract the shape memory spring 11, causing the locking member 12 to disengage from the locking gear 9 and unlock, thus allowing the locking gear 9 to rotate. Then, the sweep control system controls the servo motor 8 to rotate, thereby precisely controlling the sweep angle of the wings 2 on both sides. Once the required sweep angle for the second-speed flight state is reached, the sweep control system de-energizes and expands the shape memory spring 11, causing the locking member 12 to re-engage with the locking gear 9 and lock it in place, thus preventing the locking gear 9 from rotating. This cyclical real-time control enables real-time, precise, and stepless variable control of the wing sweep angle during flight.

[0047] Conversely, when the flight device needs to transition from the second speed flight state to the relatively slower first speed flight state, the sweep control system energizes the shape memory spring 11 to contract and unlock it, thereby putting the locking gear 9 in a rotatable state. Then, the sweep control system controls the servo 8 to rotate. Once the required sweep angle for the first speed flight state is reached, the sweep control system de-energizes the shape memory spring 11 to expand and lock it, thereby putting the locking gear 9 in a non-rotatable state.

[0048] Understandably, while controlling the wing sweep motion, the sweep control system also synchronously controls the motor 15 in real time according to the actual flight needs, thereby controlling the movement of the conveyor belt 16, changing the position of the battery on the conveyor belt and the center of gravity of the entire flight device in real time, and realizing the automatic balance control of the variable sweep wing.

[0049] The technical solution of this application has the following advantages or beneficial effects: Because the variable-sweep wing can steplessly adjust the wing sweep angle in real time and simultaneously control the motor to achieve automatic balance of the flight device's center of gravity, the flight device can precisely and steplessly change its flight state in real time, maintaining the optimal wing shape, increasing lift and reducing aerodynamic drag, and balancing mission performance at different flight speeds. Furthermore, the simpler swept C-wing mechanical structure reduces the size, weight, and cost of the flight device.

[0050] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A variable-sweep wing flight device, characterized in that, The fuselage includes a fuselage, wings, and a vertical tail. A fixed plate is provided on the fuselage, and two servos are mounted on the fixed plate. Two locking gears are fixedly installed on the wings on both sides of the fuselage near one end of the fuselage. The locking gears are respectively connected to the output shafts of the corresponding servos. A shape memory spring is fixedly installed on the fuselage, and the shape memory spring is located in a coplanar position between the two locking gears.

2. The variable-sweep wing flight device according to claim 1, characterized in that, The shape memory spring has conductive ends and locking components at both ends; when the shape memory spring is energized, it contracts, which allows the locking components to disengage from the locking gear and unlock; when the shape memory spring is de-energized, it expands, which allows the locking components to re-engage with the locking gear and lock.

3. The variable-sweep wing flight device according to claim 2, characterized in that, The fuselage contains a motor, a conveyor belt, a battery, and a pulley; the battery is bonded to the conveyor belt, which is laid out along the flight direction of the fuselage; the motor is located on the fuselage near the nose, the pulley is located on the fuselage near the tail, one end of the conveyor belt is connected to the output shaft of the motor, and the other end is connected to the pulley.

4. The variable-sweep wing flight device according to claim 3, characterized in that, Both the servo motor and the motor are servo motors, capable of rotating in both directions.

5. The variable-sweep wing flight device according to claim 3, characterized in that, The battery serves as the power source for the servo motor, the electric motor, and the shape memory spring.

6. The variable-sweep wing flight device according to claim 1, 2, or 3, characterized in that, Elastic elements are provided at the junction of the two wings. The shape of the elastic elements can elastically match the shape of the wings and the junction. When the wings sweep back, the elastic elements contract and deform to maintain the streamline of the fuselage and wings.

7. The variable-sweep wing flight device according to claim 1, 2, or 3, characterized in that, The wing is composed of skin, ribs and spars arranged in an alternating manner, and high-strength carbon rods are attached to the ribs by bonding with epoxy resin.

8. The variable-sweep wing flight device according to claim 1, 2, or 3, characterized in that, The vertical tail is an all-moving tail fin used to control the longitudinal and directional control of the flight device.

9. The variable-sweep wing flight device according to claim 2 or 3, characterized in that, The outer wing section of the wing is equipped with at least one sensor capable of real-time monitoring of the wing's position, angle, speed, strain, pressure, and wind speed.

10. A flight control system for controlling the variable-sweep wing flight device according to any one of claims 1 to 9, characterized in that, It includes a vertical tail control system and a sweep control system; the vertical tail control system and the sweep control system work together under the synchronous control of the flight control system, and the flight control system uses the real-time flight parameters provided by the sensors on the outer wing section of the wing as the basis for flight control. The vertical tail control system controls the vertical tail in real time to achieve longitudinal operation and directional control of the flight device; the sweep control system controls the servos and shape memory springs in real time to precisely control the sweep angle of the wings on both sides of the fuselage; at the same time, the sweep control system can also control the rotation of the motors inside the fuselage in real time, thereby controlling the movement of the conveyor belt, changing the position of the batteries on the conveyor belt and the center of gravity of the entire flight device in real time, and realizing automatic balance control of the variable sweep wings.

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