Unmanned aerial vehicle based on coaxial double rotor wings

Abstract

The invention discloses an unmanned aerial vehicle based on coaxial double rotor wings, which belongs to the technical field of unmanned aerial vehicles and comprises a motor assembly, a rotor wing assembly, a variable pitch assembly, a load bin body and an undercarriage. The rotor wing assembly comprises a first rotor wing set, a second rotor wing set and a center fixing shaft. The center fixingshaft sequentially penetrates through the first rotor wing set, a center vertical groove and the second rotor wing set, so the motor assembly can drive the first rotor wing set and the second rotor wing set to rotate when rotating around the center fixing shaft, and a GPS signal receiving and transmitting device is arranged at a signal end; a flight control module, a navigation module, a power supply module and the like are arranged in the load cabin body; the undercarriage is fixed below the load cabin body; the variable-pitch assembly is arranged at the fixed end of the center fixing shaft in a sleeving mode, so that variable-pitch operation of the rotor wing can be achieved only by driving one rotor wing set to rotate relative to the other rotor wing set through one variable-pitch assembly; the variable-pitch operation structure is simplified through the single-layer variable-pitch design, the overall structure is simple, maintenance is easy, and reliability is high.

Description

Technical field [0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to an unmanned aerial device based on coaxial double rotors. Background technique [0002] Unmanned drones are referred to as "drones", which are unmanned drones operated by radio remote control equipment and self-provided program control devices. There is no cockpit on board, but it is equipped with autopilot, program control device, information acquisition device and other equipment. The personnel on the ground, on the ship or the remote control station of the mother aircraft use radar and other equipment to track, locate, remotely control, remotely measure and digitally transmit it. It can take off like an ordinary UAV under radio remote control or launch with a booster rocket, or it can be brought into the air by a parent aircraft for flight. UAVs are often used for patrol inspections in mountainous areas and transmission lines across large rivers, as w...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that most of the existing coaxial dual-rotor UAVs use the full variable pitch operation of the upper and lower rotors to change the flight state of the UAV. However, the full variable pitch operation of the upper and lower rotors leads to the complex structure of the above-mentioned UAVs, and the number of steering gears is mostly. Difficult to maintain, low reliability

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