An analysis on propelling speed of three-joint crescent caudal fin

Robotic fish technology provides new ideas for researches on underwater vehicles with high efficiency, mobility and low noise. It has become a hot topic in the field of underwater robot research in recent years. This paper takes three-joint robotic fish as the subject, making further research on bionic propulsion technology. From the perspective of propellers, researchers carried out a study on the speed and motion parameters of the caudal fin swing-type underwater robots through experiments. The results, obtained from MATLAB simulation, are of significance for the design of underwater propellers of the same type.