Small-sized anti-collision multi-rotor unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles (UAVs) and provides a small-sized anti-collision multi-rotor UAV which comprises a UAV body and an aluminum film inflatable protective ring arranged on the UAV body, wherein the aluminum film inflatable protective ring is provided with a plurality of hollow areas which correspond to positions of UAV propellers; the UAV propellers are capable of rotating freely in the hollow areas; a connecting mechanism is arranged at the center of the aluminum film inflatable protective ring; the aluminum film inflatable protective ring is connected with the UAV body by the connecting mechanism; and a lightweight air-leak guard is also arranged around each UAV propeller and among the corresponding hollow area of the aluminum film inflatable protective ring. The small-sized anti-collision multi-rotor UAV has the advantages that the UAV propellers can be fully protected during the flight in an indoor or complex space environment and the failure of gyroscopes, accelerometers and other sensors caused by the impact of the collision can be avoided because the structure of an airbag of the UAV can absorb impact load during the collision, the weight of the UAV is not increased by virtue of the lightweight airbag so that the endurance ability is high, and the flight is stable and reliable by virtue of the tumbler structure.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a small anti-collision multi-rotor unmanned aerial vehicle. Background technique [0002] In order to meet the needs of indoor flight and avoid possible friction caused by propeller failure and bombing, existing multi-rotor UAVs (taking quad-rotors as an example) generally adopt frame-type edge protection structures or cage-type protection ring structures. [0003] The above technique suffers from three main weaknesses: [0004] The first is to increase the dead load: As a key structural part of the protective propeller, it needs sufficient impact resistance, so that the rigidity of the structure is required. A structure with sufficient rigidity needs a material with sufficient weight as a support; and the increased weight may cause 10%~15% endurance loss; [0005] The second is that the impact and shock absorption effect of the existing structure is not good: ...

AI Technical Summary

Problems solved by technology

[0009] 1. When the existing multi-rotor aircraft is used in a small indoor complex space, a slight collision may easily lead to loss of control;

Images