High-maneuverability large-load long-endurance multi-rotor airship

Abstract

The invention discloses a high-maneuverability, large-load and long-endurance multi-rotor airship which adopts a hollow frame of a multi-rotor unmanned aerial vehicle as a foundation, and an air bag filled with light gas is mounted on the frame of the multi-rotor airship. 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. The aircraft has the following advantages that 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 retains the flexibility and controllability of the multi-rotor unmanned aerial vehicle, more complex and efficient control can be performed compared with an airship of a traditional architecture, and the dynamic response speed of the aircraft is effectively improved. And finally, due to the redundant design of the light air bag and the multi-rotor double-lift system, the reliability of the system is greatly improved, and the aircraft cannot directly fall due to accidental failure of any structure.

Description

Technical Field

[0001] The invention belongs to the field of unmanned aerial vehicles, and in particular relates to a multi-rotor airship with high maneuverability, large load capacity and long endurance. 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 multi-rotor airship with high maneuverability, large load capacity and long endurance. The unmanned aerial vehicle has strong endurance, strong load 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 multi-rotor airship with high maneuverability, large load capacity and long endurance comprises a frame, an airbag, a power system and a payload compartment; 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, and the payload compartment is used to carry batteries, a control system and a cargo load; the airbag is fixed to the center of the frame, the power system is fixed to the frame, and the payload compartment is fixed below the frame.

[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 and is filled with helium or hydrogen.

[0013] Multiple power systems and airbags constitute the dual lift redundant design of the multi-rotor airship. When one of the power sources fails, the multi-rotor airship will not lose power and fall.

[0014] The multi-rotor airship with high maneuverability, large load capacity and long endurance 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. In order to ensure safety, existing multi-rotor drones usually carry parachutes to prepare for forced landing when the system fails. The dual-lift redundant design of the airbag and multi-rotor power system of the present invention can still provide sufficient lift for slow forced landing when the aircraft's multi-rotor power system fails; when the airbag loses lift due to accidental damage, the multi-rotor power system can still provide sufficient lift for slow forced landing. Therefore, the dual-lift redundant design of the airbag and multi-rotor power system greatly improves the reliability of the system. Accidental failure of any structure will not cause the aircraft to fall directly, providing reliable protection for urban low-altitude economic applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a multi-rotor airship with high maneuverability, large load capacity and long endurance according to the first embodiment of the present invention;

[0019] Figure 2It is a schematic diagram of the rack structure;

[0020] Explanation of the markings in the figure: 1. frame; 11. connecting piece; 12. rigid rod; 2. airbag; 21. rope; 31. propeller; 32. brushless motor; 4. load compartment. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the present invention, a multi-rotor airship with high maneuverability, large load capacity and long endurance of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 As shown, a multi-rotor airship with high maneuverability, large load capacity and long endurance according to the first embodiment of the present invention comprises a frame 1, on which an airbag 2, a power system 3 and a payload compartment 4 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 connects the airbag 2 through a plurality of 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 connects the rigid rod 12 downward 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.

[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] like Figure 2 The figure shows a schematic diagram of the rack structure.

[0027] 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.

[0028] 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 its basis, and mounts an airbag filled with lightweight 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 redundant design of the lightweight airbag and the multi-rotor dual-lift system greatly improves the system reliability. If any structure fails due to an accident, the aircraft will not fall directly, providing reliable protection for urban low-altitude economic applications. The multi-rotor airship is suitable for a variety of application scenarios, such as environmental monitoring, aerial photography, logistics distribution and emergency rescue.

[0029] 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 multi-rotor airship with high maneuverability, large load capacity and long endurance, characterized in that: The invention comprises a frame (1), an airbag (2), a power system (3), and a load compartment (4); 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; and the load compartment (4) is used to carry batteries, a control system, and a cargo load; the airbag (2) is fixed to the center of the frame (1); the power system (3) is fixed to the frame (1); and the load compartment (4) is fixed below the frame (1).

2. A multi-rotor airship with high maneuverability, large load capacity and long endurance 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. The multi-rotor airship with high maneuverability, large load capacity and long endurance according to claim 2, characterized in that: The hollow cylinder is a sheet of carbon fiber, metal or polymer material.

4. The multi-rotor airship with high maneuverability, large load capacity and long endurance 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 multi-rotor airship with high maneuverability, large load capacity and long endurance 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 multi-rotor airship with high maneuverability, large load capacity and long endurance 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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