Modeling and Simulation of Inflation Process for Torpedo Inflatable Collar

Reliability of inflation process of a torpedo inflatable collar directly influences the safe recovery of the tor-pedo. In order to understand the inflation mechanism of a torpedo inflatable collar, a theoretical model of inflation process of a torpedo inflatable collar is built to simulate the tank exhausting and torpedo inflatable collar inflation proc-esses based on the thermodynamic law. The variation rules of the parameters, such as the volume of inflatable collar, the inflation velocity, the tank pressure and the force on inflatable collar during inflation process, are obtained. The detail processes of torpedo speed changing and inflatable collar filling under critical depth is gotten by simulation of torpedo inflation process in the case of torpedo stop with speed. Simulation results illustrate that the parameters such as inflat-able collar inflation and residual gas pressure, as well as the variation rules of torpedo speed and depth, show good agreement with the experimental data. The proposed model may provide a theoretical tool for design of torpedo buoy-ancy equipment.