Influence of Structural Parameters of Diversion Cone on Smooth Effect of Gas Ejection Bottom Pressure Impact

被引：0

作者：

Cheng H.-J. ^{[1
]}

Zhao X. ^{[1
]}

Zhao Y. ^{[1
]}

Gao L. ^{[1
]}

机构：

[1] Laboratory of Armament Launch Theory & Technology, State Key Discipline, Rocket Forces University of Engineering, Xi'an

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 11期

关键词：

Diversion cone; Gas ejection; Impact smoothing; Interior ballistics; Structure parameters;

D O I：

10.13675/j.cnki.tjjs.180724

中图分类号：

学科分类号：

摘要：

For the problem of the effects of the structure parameters of the diversion cone on the internal ballistic flow field coupling, dynamic layered dynamic grid technology are used to establish the internal ballistic numerical model coupling missile movement and secondary combustion, its reliability is verified by the experiment. Based on the theory model, it is decoupling analyzed the effects of three structure parameters on the flow field characteristics and the interior ballistic load, which are the radius, height and impact height of the diversion cone. The results show that the structure of the diversion cone directly determines the generation of gas splash and the disorder of the flow field structure. The change of the radius, height and impact height of the diversion cone will change the position of the gas reflection point, the area of secondary combustion and the intensity. The structural optimization greatly alleviated the impact phenomenon and achieved the best smoothing effect. Bottom pressure compared to experimental device is reduced by 24.5%. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.

引用

页码：2444 / 2453

页数：9

共 4 条

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