Numerical comparison on hydro-coefficient of cross rudder and X rudder in underwater vehicle
In order to establish hydrodynamic design method for X rudder in underwater vehicle,meeting the require-ment of rapid design in engineering,it demands to study the maneuvering hydrodynamic characteristic,and to establish the hydro-coefficient predicted method for X rudder in underwater vehicle.In this paper,the simulation study is conducted to analyzing the hydro-coefficient and pressure distribution of cross rudder and X rudder.The result shows with the same design parameter,dynamic stability of X rudder is lower than that of cross rudder with or without sail.The area where the pressure is affected by the sail is in the leading edge of cross rudder or X rudder,which is about 20 percent of its chord.And the influence of sail to hydro-coefficient and pressure distribution of cross rudder is stronger than that of X rudder.Further-more,based on the linear hydro-coefficient simulation of cross rudder or X rudder with different span data in underwater vehicle,the ratio of hydro-coefficient with X rudder to that with cross rudder is obtained.Thus the hydro-coefficient pre-dicted method for X-rudder in underwater vehicle is presented based on hydro-coefficient ratio and hydro-coefficient with cross rudder.
万方数据
维普
