Mute propeller blade and rotor unmanned aerial vehicle with same

Abstract

The invention relates to a mute propeller blade. The mute propeller blade comprises a propeller blade body, wherein a plurality of unequal sawtooth grooves are formed in the tail edge of the propeller blade body; a plurality of unequidistant saw teeth are formed between the unequal sawtooth grooves and the propeller blade body; a micro array diaphragm structure is bonded to a force suction surface of the propeller blade body; the micro array diaphragm structure consists of a plurality of protrusions with different lengths; the protrusions with the different lengths are distributed in a sinusoidal waveform manner in the width direction of the propeller blade body; and each of the protrusions adopts a sawtooth-like structure, and a closed angle part of the sawtooth-like structure faces to the tail edge of the propeller blade body, and each of the protrusions of the sawtooth-like structure comprises a first sidewall and a second sidewall, wherein a certain inclined angle is at the jointed position of the first sidewall and the corresponding second sidewall. The invention also discloses a rotor unmanned aerial vehicle, and the rotor unmanned aerial vehicle comprises the mute propeller blade. The mute propeller blade disclosed by the invention has the beneficial effects that the noise reduction effect is good, the application range is extended, the efficiency of the unmanned aerial vehicle is improved, and the flying speed of the unmanned aerial vehicle is increased.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a silent blade and a rotor unmanned aerial vehicle containing the same. Background technique [0002] In today's society, as the technology of UAVs is getting more and more advanced, it can be seen in more and more occasions, such as military reconnaissance, assisting anti-terrorism, etc. UAVs have played a great role, reducing unnecessary losses and improving success rate. But in some cases, its noise problem has brought hidden dangers to its safety, such as the incident where a drone was discovered and shot down in military reconnaissance. The reason why drones are discovered is largely due to their relatively large noise, low-altitude flight, small size, and difficult to be detected by radar, but noise restricts their safety. In response to such problems, countries all over the world are now setting off an upsurge of research on low-noise drones. [0003] The noise o...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a silent blade and a rotor UAV containing it, so as to solve the technical problems of high noise and slow flight speed in the prior art

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