Unmanned flight platform based on micro turbojet engine

Abstract

The invention relates to an unmanned flying platform based on a micro turbojet engine. The unmanned flying platform has the functions of hovering, level flying, steering and the like, can be used in the fields of material transportation, aerial photography and the like, and comprises an oil tank, a bearing carbon plate, a cantilever beam, a micro turbojet engine, an oil pump, a vector nozzle, a steering engine, a dowel bar, an undercarriage and the like. The fuel tank is cylindrical in appearance, is used for storing fuel oil and is also a main body of the flying platform. The bearing carbon plate is fixedly connected with the top of the oil tank, the four cantilever beams are fixed to the outer side of the oil tank at equal intervals, the four micro turbojet engines are fixed to the ends of the cantilever beams respectively, and the four oil pumps are fixed to the upper surfaces of the cantilever beams respectively. The two vector nozzles are installed on fixed nozzles of the two opposite micro turbojet engines, the two steering engines are fixed to the two micro turbojet engines provided with the vector nozzles respectively, the dowel bars are connected with the steering engines and the vector nozzles respectively, and the four undercarriages are fixed to the bottom of the oil tank.

Description

Technical Field

[0001] The present invention is an unmanned flight platform based on a micro turbojet engine, belonging to the field of unmanned aerial vehicles. Technical Background

[0002] With the implementation of the low-altitude economy policy and the development of unmanned aerial vehicle technology, multi-rotor unmanned aerial vehicles have been widely used. Such unmanned aerial vehicles mostly use propellers driven by motors as power devices, which are sensitive to air flow disturbances and have weak load-carrying capacity, and cannot meet the requirements of transporting heavy loads and aerial photography in complex air flow environments. The micro turbojet engine has the characteristics of large thrust and high stability. Therefore, the present invention proposes an unmanned flight platform powered by a micro turbojet engine. Summary of the Invention

[0003] The present invention proposes an unmanned flight platform based on a micro turbojet engine. The unmanned flight platform has functions such as hovering, level flight, and turning, and can be used in fields such as material transportation and aerial photography. The unmanned flight platform has the advantages of strong load-carrying capacity, good resistance to air flow disturbances, high thrust-to-weight ratio, and strong maneuverability.

[0004] Technical Solution of the Present Invention:

[0005] An unmanned flight platform based on a micro turbojet engine, the structure of which includes a fuel tank 1, a load-bearing carbon plate 2, a cantilever beam 3, a micro turbojet engine 4, an oil pump 5, a vector nozzle 6, a servo 7, a force transmission rod 8, a landing gear 9, etc. The fuel tank 1 has a cylindrical appearance and is used to store fuel and is also the main body of the flight platform. A vertical baffle is provided inside the fuel tank 1, dividing the inside of the fuel tank into 4 areas, thereby reducing the impact of fuel fluctuations during flight on flight attitude control. There is a certain distance between the lower edge of the baffle and the bottom of the fuel tank 1, enabling the fuel between the areas to communicate with each other, so as to keep the liquid levels of the four areas consistent. The load-bearing carbon plate 2 is fixedly connected to the top of the fuel tank 1 and serves as the mounting plate for the control system components of the flight platform (such as the flight platform controller, power supply, micro turbojet engine ECU, etc.). There are a total of four cantilever beams 3, which are fixedly arranged at equal intervals on the outside of the fuel tank 1. The cantilever beam 3 adopts an inverted U-shaped hollow design, and its side plates are perforated to reduce the weight of the flight platform while ensuring strength. The number of micro turbojet engines 4 is four, which are respectively fixed at the ends of the cantilever beams 3 to provide power for the unmanned flight platform. The number of oil pumps 5 is four, which are respectively fixed on the upper surface of the cantilever beams 3 and are used to pump fuel from the fuel tank 1 into the micro turbojet engines 4. Above the fixed nozzles of two relatively positioned micro turbojet engines 4, a vector nozzle 6 is respectively installed, which can deflect at a certain angle relative to the axis of the micro turbojet engine 4. The vector nozzle 6 is used to change the thrust direction of the micro turbojet engine 4 to achieve the turning and level flight functions of the flight platform. On the two micro turbojet engines 4 equipped with vector nozzles 6, a servo 7 is respectively installed, which can output torque to drive the force transmission rod 8 to drive the vector nozzle 6 to deflect. The force transmission rods 8 are respectively connected to the servo 7 and the vector nozzle 6, and transmit the torque output by the servo 7 to the vector nozzle 6. Four landing gears 9 are installed at the bottom of the fuel tank 1 to support the unmanned flight platform. Description of the Drawings

[0006] Appendix Figure 1 is an isometric view of the unmanned flight platform based on the micro turbojet engine.

[0007] Appendix Figure 2 is a top view of the unmanned flight platform based on the micro turbojet engine.

[0008] Appendix Figure 3 is a side view of the unmanned flight platform based on the micro turbojet engine.

[0009] Appendix Figure 4 is a side view of the micro turbojet engine equipped with a vector nozzle.

[0010] Appendix Figure 5 is an isometric view of the combination of the inside of the fuel tank and the cantilever beam

[0011] In the figure: 1. Fuel tank; 2. Load-bearing carbon plate; 3. Cantilever beam; 4. Micro turbojet engine; 5. Oil pump; 6. Vector nozzle; 7. Servo; 8. Force transmission rod; 9. Landing gear. Specific implementation method

[0012] Before starting the micro turbojet engine 4, the directions of the two vector nozzles 6 are perpendicular to the ground. Start the micro turbojet engine 4 to work through the control system of the unmanned flight platform. The oil pump 5 pumps fuel from the fuel tank 1 to the micro turbojet engine 4. After the micro turbojet engine 4 ignites successfully, the rotational speed gradually increases.

[0013] When the micro turbojet engine 4 is in the idle state, slowly increase the throttle, and the thrust of the micro turbojet engine 4 gradually increases. When the total thrust of the four micro turbojet engines 4 is greater than the self-weight of the unmanned flight platform, the unmanned flight platform takes off and ascends. After rising to a certain height, make the total thrust of the four micro turbojet engines 4 equal to the self-weight of the unmanned flight platform and keep the total thrust unchanged, and the hovering function of the unmanned flight platform can be realized.

[0014] At this time, control the servo 7 to output torque. The force transmission rod 8 transmits the torque output by the servo 7 to the vector nozzle 6, and the two vector nozzles 6 deflect. Make the directions and magnitudes of the deflection angles of the two vector nozzles 6 remain the same, so that the thrust directions of the two micro turbojet engines 4 equipped with vector nozzles 6 are the same. Adjust the thrust of the four micro turbojet engines 4 to keep the height and attitude of the flight platform unchanged, and the level flight function of the unmanned flight platform can be realized.

[0015] Make the directions of the deflection angles of the two vector nozzles 6 opposite and the magnitudes of the deflection angles remain the same, so that the two micro turbojet engines 4 equipped with vector nozzles 6 generate a horizontal torque. Increase the thrust of the two micro turbojet engines 4 equipped with vector nozzles 6 to keep the total vertical thrust of the four micro turbojet engines 4 unchanged, so that the height of the flight platform remains unchanged, and it deflects in the horizontal direction, thereby realizing the turning function of the unmanned flight platform.

Claims

1. An unmanned flight platform based on a micro turbojet engine, characterized in that The structure includes a fuel tank 1, a load-bearing carbon plate 2, a cantilever beam 3, a micro turbojet engine 4, an oil pump 5, a vector nozzle 6, a servo 7, a force transmission rod 8, a landing gear 9, etc.; The fuel tank 1 has a cylindrical appearance, which is used to store fuel and is also the main body of the flight platform; The load-bearing carbon plate 2 is fixedly connected to the top of the fuel tank 1, and four cantilever beams 3 are fixedly arranged at equal intervals on the outside of the fuel tank 1. Four micro turbojet engines 4 are respectively fixed at the ends of the cantilever beams 3, and four oil pumps 5 are respectively fixed on the upper surface of the cantilever beams 3. Two vector nozzles 6 are installed on the fixed nozzles of two relatively positioned micro turbojet engines 4, and two servos 7 are respectively fixed on the two micro turbojet engines 4 equipped with vector nozzles 6. The force transmission rods 8 are respectively connected to the servos 7 and the vector nozzles 6. Four landing gears 9 are fixed at the bottom of the fuel tank 1; The flight platform has functions such as hovering, level flight, and turning.

2. The fuel tank 1 described in claim 1 has a cylindrical appearance, which is used to store fuel and is also the main body of the flight platform. The fuel tank 1 is made of aluminum alloy material to reduce weight. Two vertical baffles are provided inside the fuel tank 1, dividing the interior of the fuel tank into 4 areas, thereby reducing the impact of fuel fluctuations during flight on flight attitude control. There is a certain distance between the lower edge of the baffle and the bottom of the fuel tank 1, enabling the fuel between different areas to flow, so that the liquid levels in the four areas can be kept consistent.

3. There are a total of four cantilever beams 3 described in claim 1, which are fixedly arranged at equal intervals on the outside of the fuel tank 1. The cantilever beam 3 adopts an inverted U-shaped hollow design and is perforated on both sides, reducing the weight of the flight platform while ensuring strength.

4. The number of micro turbojet engines 4 described in claim 1 is four, which are respectively fixed at the ends of the cantilever beams 3 to provide power for the unmanned flight platform. On the fixed nozzles of two relatively positioned micro turbojet engines 4, a vector nozzle 6 is respectively installed, which can deflect at a certain angle relative to the axis of the micro turbojet engine 4. The vector nozzle 6 is used to change the thrust direction of the corresponding micro turbojet engine 4, realizing the turning and level flight functions of the flight platform. On the two micro turbojet engines 4 equipped with vector nozzles 6, a servo 7 is respectively installed, which can output torque to drive the force transmission rod 8 to drive the vector nozzle 6 to deflect. The force transmission rods 8 are respectively connected to the servos 7 and the vector nozzles 6, transmitting the torque output by the servos 7 to the vector nozzles 6.

5. The unmanned flight platform based on a micro turbojet engine according to claim 1, characterized in that it can The hovering function is realized. The specific implementation method is that before starting the micro turbojet engine 4, the directions of the two vector nozzles 6 are perpendicular to the ground. Start the micro turbojet engine 4 to work through the control system of the unmanned flight platform. The oil pump 5 pumps fuel from the fuel tank 1 to the micro turbojet engine 4, and after the micro turbojet engine 4 ignites successfully, the rotational speed gradually increases. When the micro turbojet engine 4 is in the idle state, slowly increase the throttle, and the thrust of the micro turbojet engine 4 gradually increases. When the total thrust of the four micro turbojet engines 4 is greater than the self-weight of the unmanned flight platform, the unmanned flight platform takes off from the ground. After rising to a certain height, make the total thrust of the four micro turbojet engines 4 equal to the self-weight of the unmanned flight platform and keep the total thrust unchanged, and the hovering function of the unmanned flight platform can be realized.

6. The unmanned flight platform based on a micro turbojet engine according to claim 1, characterized in that it can Implement the level flight function. The specific implementation method is that after the flight platform takes off from the ground, the steering gear 7 outputs torque, and the force transmission rod 8 transmits the torque output by the steering gear 7 to the vector nozzle 6, and the two vector nozzles 6 deflect. Make the directions and magnitudes of the deflection angles of the two vector nozzles 6 consistent, so that the thrust directions of the two micro turbojet engines 4 equipped with vector nozzles 6 are the same, and adjust the thrusts of the four micro turbojet engines 4 so that the height and attitude of the flight platform remain unchanged, and the level flight function of the unmanned flight platform can be realized.

7. A kind of unmanned flight platform based on a micro turbojet engine according to claim 1, characterized in that it can Implement the turning function. The specific implementation method is that during the level flight of the flight platform, make the directions of the deflection angles of the two vector nozzles 6 opposite, and the magnitudes of the deflection angles remain the same, so that the two micro turbojet engines 4 equipped with vector nozzles 6 generate horizontal torque. Increase the thrusts of the two micro turbojet engines 4 equipped with vector nozzles 6 so that the total thrust in the vertical direction of the four micro turbojet engines 4 remains unchanged, so that the height of the flight platform remains unchanged, and it deflects in the horizontal direction, thereby realizing the turning function of the unmanned flight platform.

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