The invention relates to the technical field of unmanned aerial vehicles, and discloses blades, a propeller and an unmanned aerial vehicle. Each of the blades comprises a blade main body and a winglet. Each of the winglets comprises a flat plate part and a connection part. The winglets are disposed on the first ends of the blade main bodies. Each of the blade main bodies, the corresponding connection part and the corresponding flat plate part are connected in sequence and form a continuous smooth curved surface. The width of the smooth curved surfaces is gradually decreased from the first ends to the flat plate parts. A dip angle alpha exists between the winglets and the blade main bodies at the horizontal direction, and is less than 35 degrees and not less than 10 degrees. The blades adopt the layout of the winglets, and therefore aerodynamic performance and dynamic characteristics of the propeller are improved, air friction is reduced, the efficiency is increased, the flight speed and flight distances of the unmanned aerial vehicle are increased, influences of turbulent flow on wingtips are reduced, control performance of the propeller is improved, and flight stability of the unmanned aerial vehicle is improved.
Blades, propeller and unmanned aerial vehicle
24.02.2016
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
Propeller blade, unmanned aerial vehicle propeller and unmanned aerial vehicle
Europäisches Patentamt | 2024
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