Research on system model of high pressure air blowing submarine's main ballast tanks

When the accident of rudder-locked and flooded compartment happens to submarine,the most effective method to recovery submarine is acquiring positive buoyancy and moment through blowing main ballast tanks.The model of high pressure air blowing ballast tanks concerns the success or unsuccess of submarine's recovery,so it is necessary to carry through the research of high presure blowing model.The paper analyzes the characterstic of physical model of high pressure air blowing submarine's main ballast tanks.Then establish the short circuit and routine blowing model,and carry through simulation,which provide the theoretics foundation to carry out physical model experiments.The result indicate Laval model is feasible,and the tonnage of ballast tanks mostly rest with the application mode of high pressure air.The tonnage of short circuit is twice more than the routine blowing in coequal terms to a certain submarine.