Research on the Gas Aftereffect and Its Influence on Launch Tube Cover During Underwater Vertical Launching

doi:10.3969/j.issn.1000-1093.2017.11.014

Abstract

Abstract: When a submarine launched missile is ejected from the launch tube with a gas-steam ejection system, the gas in the launch tube is overflowing under the action of residual pressure in launch tube, and then interacts with seawater to generate the bubbles at the outlet of launch tube. The periodic fluctuation of gas bubble enables the cover to move, which causes the safety issue of the launch tube cover system. Base on CFD software Fluent, dynamic mesh method and Mixture model are used to simulate the evolution process of gas bubble and its effect on the launch tube cover system with flexible-support. The movement law and load characteristics of the launch tube cover are obtained by studying the periodic expansion and contraction process of the bubble at the outlet of launch tube. The simulated result shows that the simulated data agrees with the experimental data, which verifies the validity of the proposed method. Key

Key words: ordnancescienceandtechnology, underwaterverticallaunching, gasaftereffect, flexible-support, dynamicmeshmethod

CLC Number:

TJ762.4⁺1

QI Xiao-bin, WANG Rui, YUAN Xu-long, CAO Zhong-chen, LIU Chuan-long. Research on the Gas Aftereffect and Its Influence on Launch Tube Cover During Underwater Vertical Launching[J]. Acta Armamentarii, 2017, 38(11): 2184-2189.

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第38卷第11期2017 年11月兵工学报ACTA
ARMAMENTARIIVol.38No.11Nov. 2017

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