The invention aims to provide a bionic propeller. The bionic propeller comprises a blade. A guiding edge portion of the blade is of a concave-convex front edge structure, and a blade tip of the blade is of a sawtoothed structure. The concave-convex front edge structure comprises fourteen protruding nodes, the sizes of the protruding nodes sequentially decrease from the middle of the guiding edge portion to two sides, a smooth transition effect is achieved from the protruding nodes to the blade tip and the blade, and tangent planes at a convex position and a concaved position of each protruding node are both shaped like wing tangent planes. The sawtoothed structure comprises four sawteeth, the sawteeth are distributed in a region of 17 degrees to 25 degrees from the edge to the center line of the blade, inward sawtooth concaves and outward sawtooth cusps are formed in the blade tip of the blade, and the projection of each sawtooth is an isosceles triangle. The bionic propeller enables a boundary separation region on the surface of the blade to be obviously reduced relative to a standard blade, so a stalling angle is increased; the bionic propeller can make full use of the power of a main engine under various working conditions, reduce waste of the power of main engines of a conventional propeller and a ducted propeller, reduce generated cavitation noise, and improve the utilization efficiency of ship energy.
Bionic propeller
2015-05-20
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
Swing device, underwater bionic propeller and application of underwater bionic propeller
European Patent Office | 2023
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