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《Engineering Mechanics》 2013-09
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THE EFFECT OF GAS JET SPEED ON THE MOTION PROCESS OF THE UNDERWATER VEHICLE VERTICAL LAUNCHING BY USING GAS CURTAIN

CAO Wei;LIU Hai-jun;WANG Cong;School of Astronautics,Harbin Institute of Technology;College of Civil Engineering and Architecture,Hebei University;  
The vertical launching technology of the underwater vehicle by using the gas curtain is a new underwater launch technology.By means of numerical simulation,this paper studies the relationship between the shape of the gas curtain and hydrodynamic characteristics of the underwater vehicle under different gas jet speed during the vertical projection.The results show that,in the process of the underwater vehicle launching from the tube,the vehicle can pass through the least radius of the gas curtain successfully on the condition of different gas jet speed,and in the process of the underwater vehicle exiting the water,the total drag coefficient of the vehicle decreases independent of the Mach number of the gas jet.
【Fund】: 国家自然科学基金项目(51149003 50909027);; 中央高校基本科研业务费专项资金项目(HIT.NSRIF.2013033)
【CateGory Index】: TP69
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