Bionic double tail sterm propeller

Abstract

The present invention provides a kind of bionic double tail stern propeller, which includes one underwater main body, one vehicle body on the underwater main body, two tail handles in the back of the underwater main body, two tail fins, and motor and transmission mechanism on the vehicle body. It features the underwater main body comprising two symmetrically arranged parts with back ends connected tail handles and tail fins successively the vehicle body comprising one reserved floating body and one support connected the underwater main body and the reserved floating body. The present invention has the advantages of fish-imitating propelling, including high efficiency, low noise and less environment disturbance, no bow rolling problem of single tail propelling, and wide application foreground.

Description

(1) Technical field [0001] The invention relates to the technical equipment field of propulsion and manipulation of ships and marine structures, in particular to a novel double-tail bionic tail propeller imitating fish tail propulsion. (2) Background technology [0002] At present, the price of oil in the world is soaring and there is a serious shortage of energy sources. Countries are competing to study various energy-saving measures for ships. According to statistics, in the energy consumption of a conventional transport ship, the main engine accounts for about 65%, and in the total energy consumption of the main engine, 45%-50% of the energy is used to drive the propeller to rotate and propel the ship forward. Therefore, ship propulsion energy saving is particularly important. In order to improve propulsion efficiency, various new high-efficiency propulsion devices different from conventional propellers are being studied at home and abroad, such as low-speed large-diamet...

AI Technical Summary

Problems solved by technology

[0010] 1. Due to the problem of shaking the head of the robotic fish propelled by a single tail fin, this will inevitably increase the navigation resistance of the robotic fish and reduce the forward speed of the robotic fish;

[0011] 2. The trajectory of the robot fish propelled by single tail fin is unstable, and it is difficult to realize the precise control of the robot fish's forward route;

[0012] 3. The rotatability of the robot fish propelled by single tail fin in the horizontal plane is much worse than that of real fish, especially the robot fish with fewer joints

[0013] It can be clearly seen from the comparison that it is precisely because of the various advantages of the fish-like tail swing propulsion mode that technicians in the field of ship and marine structure propulsion and manipulation technology equipment are gradually moving the propeller closer to the fish-like tail swing propulsion mode, but at present Most of them are only bionic propellers with single tail fins, but robotic fish propelled by single tail fins have a series of problems such as head shaking, which makes people urgently hope to have a safe, reliable, energy-saving, high propulsion efficiency and low noise that can overcome the problems such as head shaking. , Propellers with little disturbance to the environment

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