Simulation on Water-surface Separation of Vehicle-in-container Launched Under Water

Abstract

The separation of capsule and vehicle plays a significant role during water-surface separation process,which affects the initial motion attitude of vehicle after separation. Aiming at this problem,the forces on the capsule and the vehicle were analyzed,and the strip theory was used to set up the hydrodynamic model. By using MATLAB,the model of the separation of capsule and vehicle on the water surface was built,and the changing progress of capsule and vehicle during the process of separation was showed. The reliability of the model was proved by comparing simulation results with tank experiment results. The simulation results show that the absolute value of the pitch rate decreases during the separation process on water suface.