The invention provides a low-noise unmanned aerial vehicle rotor wing, and relates to the technical field of unmanned aerial vehicles, and the rotor wing comprises four blades: two counterpoint upper reverse blades and two counterpoint lower reverse blades. The upper reverse blades are each provided with an upper reverse wingtip, each lower reverse blade is provided with a lower reverse wingtip, and the wingtips have the structural characteristics of sharpening and sweepback. Through the design of combining the upper reverse blades and the lower reverse blades, the interference of the wingtip vortex on the rotor blade in the rotating process is reduced, meanwhile, the strength of the wingtip vortex is weakened and the lift-drag ratio is increased through the upper reverse, lower reverse, sweepback and sharpened wingtip structure, and the rotor blade has the characteristics of simple structure, convenience in processing, high lift-drag ratio and low noise.
本发明提供一种低噪声无人机旋翼,涉及无人机技术领域,所述旋翼包含四个叶片:两个对位上反叶片与两个对位下反叶片。其中上反叶片具有上反翼尖,下反叶片具有下反翼尖,所述翼尖均具有尖削与后掠的结构特征。本发明通过上反与下反叶片相结合的设计,减小了旋转过程中翼尖涡对旋翼叶片的干扰,同时通过上反、下反、后掠、尖削的翼尖结构削弱翼尖涡的强度并提高升阻比,具有结构简单、便于加工、升阻比高、低噪声的特点。
Low-noise unmanned aerial vehicle rotor wing
一种低噪声无人机旋翼
22.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |
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