Modular canard layout vertical take-off and landing fixed-wing unmanned aerial vehicle

Abstract

The invention discloses a modular canard layout vertical take-off and landing fixed-wing unmanned aerial vehicle which comprises a fuselage, a nose and wings, the wings comprise middle wing sections, outer wing sections are respectively connected to two ends of the middle wing sections, and the bottom of the fuselage close to the rear end of the fuselage is connected with the center position of the top of the middle wing sections; a wing body driving mechanism for driving the outer wing sections to fold or unfold is arranged at the joint of the middle wing sections and the outer wing sections; a tail-propelled engine and a tail-propelled propeller are arranged at the rear end part of the fuselage; the nose is installed at the front end of the fuselage, canards are arranged on the two sides of the nose respectively, vertical rods are arranged on the two sides of the fuselage respectively, the vertical rods are connected with the canards and the middle wing sections, and a plurality of rotor power systems are symmetrically arranged on the two vertical rods; the front canard type wing layout is adopted, the lift-drag ratio and aerodynamic efficiency of the unmanned aerial vehicle are improved, and the unmanned aerial vehicle has good maneuverability; the wings can be folded or unfolded, the requirement for the area of a take-off and landing site is reduced, and vertical take-off and landing can be conducted on the ground or deck with the small site.

Description

technical field [0001] The invention relates to a vertical take-off and landing fixed-wing unmanned aerial vehicle with a modular canard layout, belonging to the technical field of unmanned aerial vehicles. Background technique [0002] The vertical take-off and landing fixed-wing UAV combines the advantages of multi-rotor and fixed-wing, and has the advantages of large load, long endurance, fast speed and vertical take-off and landing. The vertical take-off and landing UAV has been widely used in the UAV field. Widely used; traditional vertical take-off and landing fixed-wing UAVs have the following problems: [0003] 1. Adopting a single-wing layout, the lift-drag ratio is relatively low, and the aerodynamic efficiency still needs to be improved; [0004] 2. Large volume and integrated design, not convenient for transportation and use, and the structure cannot be disassembled; [0005] 3. The vertical take-off and landing rotor system usually adopts a four-rotor layout, ...

AI Technical Summary

Problems solved by technology

[0003] 1. Adopting a single-wing layout, the lift-drag ratio is relatively low, and the aerodynamic efficiency still needs to be improved;

[0004] 2. Large volume and integrated design, not convenient for transportation and use, and the structure cannot be disassembled;

[0005] 3. The vertical take-off and landing rotor system usually adopts a four-rotor layout, which has poor anti-strong wind interference ability and poor aircraft reliability;

[0006] 4. The size of the fixed wing is large, and the area of ​​the takeoff and landing site is large;

[0008] At the same time, in order to improve the flight time performance and increase the aircraft's ability to stay in the air, modern UAVs mostly use large aspect ratio wings. It is not even possible to complete take-off and landing in a specific site. Moreover, during the handling of the flexible large-length wing on the ground, due to the bumpy road surface, it will cause fatigue of the wing structure, which may shorten the service life of the wing structure. Parking on the ground Or in the standby state, a larger parking space or warehouse space is also required

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