仿鱼尾鳍推进系统的水动力性能试验

Experimental study on hydrodynamic performance of a bio-tail fin propulsive system

为了开发适用于小型潜器的仿生推进系统,设计了一套仿鱼尾鳍推进系统的试验装置,并对摆动尾鳍产生的水动力进行了试验研究.根据传动装置的结构特点,计算出尾鳍的运动规律,同时利用安装在尾鳍前端的测力天平测得水对尾鳍的作用力,进而探讨了不同的尾鳍形状对仿鱼尾鳍的推进效率、推力系数和侧向力系数的影响,由此得到最优的运动姿态.

To develop bio-tail fin propulsive systems applicable in small submarines, an experimental device imitating bionic tail fin was designed to study the hydrodynamics of the oscillating tail fin. Kinematics of tail fin can be calculated based on the characteristics of actuating device. Meanwhile, the forces acting on tail fin were measured through the force balance. The optimization movements of the mechanical tail fin were investigated by the comparisons of the propulsion efficiency, propulsion coefficient and lateral force coefficient at the different conditions and profiles of tail fin.