Deformable multi-rotor airship

Abstract

According to the deformable multi-rotor airship, an air bag filled with light gas is mounted in a rack, and the air bag can be inflated and deflated with the light gas from a gas tank at any time through an airborne gas pump. The multi-rotor aircraft is high in maneuverability and stable in attitude control, and the air bag can provide extra buoyancy, so that loads of the rotors are reduced, the overall flight efficiency is improved, and the endurance time is prolonged. Air in the air bag can be compressed into the air tank through the air pump, and the size of the air bag is reduced to reduce wind resistance and enhance control capacity. Firstly, additional lift force is provided by adding the air bag, the power consumption of the aircraft is greatly reduced, and the aircraft is suitable for long-time hovering and low-speed cruising. And secondly, the design reserves the flexibility and controllability of the multi-rotor unmanned aerial vehicle, more complex and efficient control can be carried out, and the dynamic response speed of the aircraft is effectively improved. And finally, the air bag capable of inflating and deflating air in real time greatly enhances the environmental adaptability of the aircraft, and can effectively cope with various complex environments in low-altitude scenes.

Description

Technical Field

[0001] The invention relates to the field of unmanned aerial vehicles, and in particular to a deformable multi-rotor airship. Background Art

[0002] In recent years, the low-altitude economy has developed rapidly, urban low-altitude airspace policies have been further opened up, and a series of applications such as low-altitude logistics, communication relay, and airspace monitoring have developed rapidly. Among them, small and medium-sized rotor drones are widely used in the above scenarios due to their high maneuverability.

[0003] However, there is a key problem with existing small and medium-sized rotor UAVs, that is, the UAV's battery life and load capacity are severely limited by battery technology. The energy density of existing battery products is far from meeting the long battery life and heavy load required by the above scenarios. Rotor UAVs with traditional architectures have greatly restricted the development of low-altitude economic application scenarios.

[0004] On the other hand, airships are also currently used in aerial sightseeing, logistics and transportation, but the current commercial airships are too large and are still controlled by traditional ducted engine propulsion combined with tail rudder control. This architecture results in a slow response speed of the airship control system. When the airship is disturbed by low-altitude airflow, it is difficult to maintain a stable attitude and poor safety. Therefore, airships with traditional architectures usually work in the stratosphere and are difficult to be widely used in urban low-altitude environments. Summary of the invention

[0005] The purpose of the present invention is to provide a deformable multi-rotor airship, an unmanned aerial vehicle with strong environmental adaptability, flexible control, strong endurance, strong load-bearing capacity and extremely high safety, so as to solve the technical problems existing in the background technology.

[0006] In order to solve the above technical problems, the specific technical solutions of the present invention are as follows:

[0007] A deformable multi-rotor airship comprises a frame, an airbag, a power system, a load compartment and an air charging and discharging system; the frame is used to fix the components of the multi-rotor airship, the airbag is used to contain light gas and provide lift for the multi-rotor airship, the power system is used to provide lift for the multi-rotor airship and keep its posture stable, the load compartment is used to carry batteries, a control system and cargo loads, and the air charging and discharging system is used to replenish gas to the airbag or compress the airbag gas into the air pipe; the airbag is fixed to the center of the frame, the power system is fixed to the frame, the load compartment is fixed below the frame, and the air charging and discharging system is fixed to the four corners of the load compartment.

[0008] Furthermore, the frame is constructed from hollow cylinders through connectors to form a hollow square or elliptical frame.

[0009] Furthermore, the hollow cylinder is a plate of carbon fiber, metal or polymer material.

[0010] Furthermore, the airbag is fixed to the connecting piece by a rope; the power system is fixed to the connecting piece by screws; one side of the rigid rod is fixed to the connecting piece by screws, so that the rigid rod is under the frame, and the load compartment is fixed on the other side of the rigid rod.

[0011] Furthermore, the power system includes a propeller and a brushless motor; the propeller is mounted on the rotor bearing of the brushless motor by screws, and the brushless motor is fixed to the connecting piece by screws.

[0012] Furthermore, the airbag is a balloon made of polymer material or metal film material, filled with helium or hydrogen.

[0013] Furthermore, the inflation and deflation system includes an air tank, an air pipe and an air pump; the air pump is installed at the air outlet of the air tank, the air pipe is installed at the air outlet of the air pump, and the other end of the air pipe is connected to the inflation port of the airbag.

[0014] The deformable multi-rotor airship of the present invention has the following advantages:

[0015] 1. Compared with the traditional multi-rotor UAV architecture, the application of the airbag in the present invention provides additional lift, offsets the weight of the airship itself, and greatly reduces the power consumption of the aircraft. Therefore, the multi-rotor airship in the present invention is more suitable for long-term hovering and low-speed cruising applications.

[0016] 2. Compared with the ducted power system architecture used in traditional airships, the power system of the present invention is a multi-rotor architecture. This design retains the flexibility and controllability of multi-rotor drones. Compared with airships with traditional architectures, it can perform more complex and efficient control, effectively improving the dynamic response speed of the aircraft. The multi-rotor airship is suitable for a variety of application scenarios, such as environmental monitoring, aerial photography, logistics distribution, and emergency rescue.

[0017] 3. The design of the inflation and deflation system can realize real-time inflation and deflation of the airbag. When the aircraft is under low load or the airflow is disturbed, the gas is compressed into the gas tank to reduce the volume of the airbag and enhance the aircraft's wind resistance. When the aircraft is under high load, gas is added to the airbag to provide additional lift and reduce the aircraft's power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a deformable multi-rotor airship according to the first embodiment of the present invention;

[0019] Figure 2 A bottom view of a deformable multi-rotor airship according to a first embodiment of the present invention;

[0020] Explanation of the markings in the figure: 1. frame; 11. connecting part; 12. rigid rod; 2. air bag; 21. rope; 31. propeller; 32. brushless motor; 4. load compartment; 51. gas tank; 52. air pipe; 53. air pump. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the present invention, a deformable multi-rotor airship of the present invention is further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 As shown, a deformable multi-rotor airship according to the first embodiment of the present invention comprises a frame 1, on which an airbag 2, a power system 3, a payload compartment 4, and an air filling and deflation system 5 are arranged. The frame 1 is vertically fixed to each other by connecting members 11 to form a hollow rectangular frame; the connecting member 11 is connected to the airbag 2 by multiple ropes on the airbag, so that the airbag 2 is located above the center of the frame 1; the connecting member 11 fixes the power system 3 around the frame 1 by screws; the connecting member 11 is connected downwardly to a rigid rod 12 to the frame 1 by screws, and the other end of the rigid rod 12 is fixed to the connecting member 11 and further fixed to the payload compartment 4 by screws; as shown in FIG. Figure 2 As shown, four inflation and deflation systems 5 are fixed at the four corners of the load compartment 4 by screws.

[0023] The frame 1 plays a role of fixing and supporting, and provides space and attachment for the installation and use of other components. The airbag 2 is filled with hydrogen or helium to provide a constant lift to the aircraft.

[0024] The power system 3 includes a propeller 31 and a brushless motor 32. The propeller 21 is mounted on the rotor bearing of the brushless motor 32, and the brushless motor 32 is fixed to the connectors 11 distributed at the four corners of the frame 1 by screws to provide lift for the aircraft.

[0025] The payload compartment 4 is located directly below the frame 1 and is used to install a flight control system, a power supply system, a sensor system, and cargo payloads, etc.

[0026] The inflation and deflation system 5 is located at the four corners of the load compartment 4 and is connected to the airbag 2 through the air pipe 52 for flushing and deflation of gas into the airbag in real time.

[0027] like Figure 2 Shown is a bottom view of a deformable multi-rotor airship.

[0028] The present invention adopts a power system based on brushless motors, combined with lightweight airbags to provide passive lift, which not only solves the problem of poor control ability of traditional airship architecture, but also effectively improves the system's load capacity and safety, while greatly reducing power consumption.

[0029] The present invention adopts an air filling and discharging system composed of an air tank, an air pipe and an air pump to replenish or extract air from the airbag in real time, flexibly controls the volume of the airbag, and solves the problem of weak wind resistance of large-volume airships.

[0030] The present invention combines the characteristics of a multi-rotor drone and a helium airship, aiming to provide an aircraft with greater flexibility, higher stability, stronger endurance and greater safety. The airship uses the hollow frame of a multi-rotor drone as a basis, and mounts an airbag filled with light gas on its frame. The multi-rotor aircraft has strong maneuverability and stable attitude control, and the airbag can provide additional buoyancy, thereby reducing the load of the rotor and improving the overall flight efficiency and endurance time. The present invention has the following advantages: First, the addition of the airbag provides additional lift, greatly reduces the power consumption of the aircraft, and is suitable for long-term hovering and low-speed cruising. Secondly, the design retains the flexibility and maneuverability of the multi-rotor drone, and can perform more complex and efficient control compared to the airship with a traditional architecture, effectively improving the dynamic response speed of the aircraft. Finally, the application of the inflation and deflation system can flexibly adjust the volume of the airbag according to the environment in which the aircraft is located, greatly enhancing the adaptability to complex environments in low-altitude scenes. The multi-rotor airship is suitable for a variety of application scenarios, such as environmental monitoring, aerial photography, logistics distribution, and emergency rescue.

[0031] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A deformable multi-rotor airship, characterized in that: The invention comprises a frame (1), an airbag (2), a power system (3), a load compartment (4) and an inflation and deflation system (5); the frame (1) is used to fix various components of a multi-rotor airship; the airbag (2) is used to contain light gas to provide lift for the multi-rotor airship; the power system (3) is used to provide lift for the multi-rotor airship to maintain a stable posture; the load compartment (4) is used to carry batteries, a control system and a cargo load; the inflation and deflation system (5) is used to inflate the airbag (2) in real time, or to compress the gas in the airbag (2) into a gas tank; the airbag (2) is fixed to the center of the frame (1), the power system (3) is fixed to the frame (1), the load compartment (4) is fixed to the bottom of the frame (1), and the inflation and deflation system (5) is fixed to the four corners of the load compartment (4).

2. A deformable multi-rotor airship according to claim 1, characterized in that: The frame (1) is constructed from hollow cylinders through connecting pieces (11) to form a hollow square or oval frame.

3. A deformable multi-rotor airship according to claim 2, characterized in that: The hollow cylinder is a sheet of carbon fiber, metal or polymer material.

4. The deformable multi-rotor airship according to claim 2, characterized in that: The airbag (2) is fixed to the connecting piece (11) by means of a rope (21); the power system (3) is fixed to the connecting piece (11) by means of screws; one side of the rigid rod (12) is fixed to the connecting piece (11) by means of screws, so that the rigid rod (12) is located below the frame (1), and the load compartment (4) is fixed to the other side of the rigid rod (12).

5. The deformable multi-rotor airship according to claim 2, characterized in that: The power system (3) comprises a propeller (31) and a brushless motor (32); the propeller (31) is mounted on a rotor bearing of the brushless motor (32) by means of screws, and the brushless motor (32) is fixed on a connecting member (11) by means of screws.

6. The deformable multi-rotor airship according to claim 2, characterized in that: The inflation and deflation system (5) comprises an air tank (51), an air pipe (52) and an air pump (53); the air pump (53) is installed at the air outlet of the air tank (51), the air pipe (52) is installed at the air inlet of the air pump (53), and the other end of the air pipe (52) is connected to the air bag (2).

7. The deformable multi-rotor airship according to claim 1, characterized in that: The air bag (2) is a balloon made of polymer material or metal film material and is filled with helium or hydrogen.

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