Numerical Simulation of Ejecting a Missile From Missile Ejection System with Flexible Cylinder Based on Corpuscular Method

doi:10.12382/bgxb.2021.0098

Abstract

Abstract: The working mechanism of a flexible cylinder ejection system and its ejection mode are studied to further improve the controllability, concealment, repeatability and lightweight of cold launch equipment. Corpuscular method is used to calculate the gas jet inside the flexible cylinder, and simulate and calculate the fluid-structure interaction of the flexible cylinder combined with finite element method. The experimental results and the numerically simulated results of the flexible cylinder ejection system are compared to verify the correctness and reliability of the numerical calculation method. For a 16-ton missile, the multi-nozzle ejection and ejection medium of the flexible cylinder ejection system were explored by changing the calculation parameters. It is found that the missile overload has two peaks and is relatively smooth during the work of the flexible cylinder ejection system. The ejection kinetic energy of the missile is basically unchanged and the missile overload is optimized by adjusting the starting time of each nozzle. In the flexible cylinder ejection system using supercritical carbon dioxide, instead of high-pressure nitrogen or high-pressure air, as the ejection medium, the ejection kinetic energy obtained by the missile is reduced by about 41.1%, and the ejection time of the system is extended by about 17.1%.

Key words: flexiblecylinderejection, corpuscularmethod, fluid-structureinteraction, multi-jetejection, ejectionmedium

CLC Number:

TJ768.2

ZHAO Zhen， JIANG Yi， LIU Xiangxin， LI Yulong， YAN Song. Numerical Simulation of Ejecting a Missile From Missile Ejection System with Flexible Cylinder Based on Corpuscular Method[J]. Acta Armamentarii, 2022, 43(3): 533-541.

References

［1］杨珺凡,傅德彬,毕凤阳,等.水下弹射筒口气泡及载荷特性数值研究[J].固体火箭技术, 2021,44(3) : 414-419.
YANG J F, FU D B, BI F Y,et al. Numerical study on characteristics of outlet gas bubble and load of underwater ejection launch [J]. Journal of Solid Rocket Technology, 2021,44(3): 414-419. (in Chinese)
[2］李德庚,周明,黄迟,等.无人机气压弹射起飞动力学仿真分析[J].机械工程师,2020(12):96-99.
LI D G, ZHOU M, HUANG C,et al. Dynamics simulation and analysis on pneumatic catapult assisted take-off of UAV [J]. Mechanical Engineer, 2020(12):96-99. (in Chinese)
[3］马翔,徐海平,黄科.UUV用多级助推式弹射过程建模与仿真[J].舰船科学技术,2020,42(23):58-62.
MA X, XU H P, HUANG K. Model and simulation research of catapult with multi-stage booster for UUV [J]. Ship Science and Technology, 2020,42(23):58-62. (in Chinese)
[4］姚琳,马大为,马吴宁,等.两级提拉式单侧弹射装置内弹道建模与优化[J].兵工学报,2017,38(3):466-475.
YAO L, MA D W, MA W N,et al. Interior ballistics modeling and optimization of one-side ejection device with two-stage cylinder [J]. Acta Armamentarii, 2017,38(3):466-475. (in Chinese)
[5］蔺志强,陈桂明,许令亮,等.基于遗传算法的导弹电磁弹射器电机参数优化[J].火炮发射与控制学报,2020,41(4):43-48.
LIN Z Q, CHEN G M, XU L L,et al. Optimization of missile electromagnetic ejector motor parameters based on genetic algorithm [J]. Journal of Gun Launch and Control, 2020,41(4):43-48. (in Chinese)
[6］张强. 核动力叠加电磁弹射法新航母或为欧盟国家立标杆[N]. 科技日报,2020-12-16.
ZHANG Q. Nuclear powered superimposed electromagnetic catapult France's new aircraft carriermay set a benchmark for EU countries [N]. Science and Technology Daily, 2020-12-16. (in Chinese)
[7］柳忠彬,肖守讷,王欢.非爆破柔性气缸弹射器研究[J].兵工学报,2017,38(2):389-395.
LIU Z B, XIAO S N, WANG H. Study on non-blasting flexible cylinder catapult [J]. Acta Armamentarii, 2017,38(2):389-395. (in Chinese)
[8］ WANG J T. An analytical model for an airbag with a hybrid inflator[J]. ASME Crashworththiness and Occupant Protection in Transportation Systems, 1995,30:467-497.
[9］ WANG J T, NEFSKE D J. A new CAL3D airbag inflation model[J]. SAE Transactions, 1988,97:697-706.
［10］ HIRT C W, AMSDEN A A, COOK J L. An arbitrary Lagrangian-Eulerian computing method for all flow speeds［J］.Journal of Computational Physics, 1997,135(2):203-216.
[11］ OLOVSSON L. Corpuscular method for OOP Simulations, difficulty dealing with small vent holes[C]∥Proceedings of the 6th European LS-DYNA Users' Conference. Gothenburg, Sweden: ERAB, 2007:1-4.
[12］ MROZ K, PIPKORN B. Mathematical modelling of the early phase deployment of a passenger airbag-folding using origami theory and inflation using LS-DYNA particle method[C]∥Proceedings of the 6th European LS-DYNA Users' Conference. Gothenburg, Sweden: ERAB, 2007:71-86.
[13］ FREISINGER M, HOFFMANN J, STAHLSCHMIDT S. Investigation of the early inflation characteristics of a complex folded knee airbag with the new corpuscular method in LS-DYNA[C]∥Proceedings of the 6th European LS-DYNA Users' Conference. Gothenburg, Sweden : ERAB, 2007:7-20.
[14］ HIRTH A, HAUFE A, OLOVSSON L. Airbag simulation with LS-DYNA past-present-future[C]∥Proceedings of the 6th European LS-DYNA Users, Conference. Gothenburg, Sweden: ERAB, 2007: 23-46.
[15］ OLOVSSON L. Corpuscular method for airbag deployment simulations[C]∥Proceedings of the 6th European LS-DYNA Users' Conference. Gothenburg,Sweden: ERAB,2007:61-70.

[1]	ZHANG Baozhen, WANG Hanping, DOU Jianzhong, CHENG Mengwen. Fluid-structure Coupling Simulation Method for the Opening Process of Fragile Front Cover of Canister Launcher [J]. Acta Armamentarii, 2021, 42(8): 1660-1669.
[2]	LIU Wensi, LU Yue, ZHOU Qingfei, CHENG Suqiu. Complex Load of Torpedo Near-field Explosion and Its Damage Mode to Ships [J]. Acta Armamentarii, 2021, 42(4): 842-850.
[3]	ZHANG Xiaoguang， LI Bin， DANG Huixue， WEN Jinpeng， SUN Pan. A Simulation Method for Inflatable Floating of Underwater Vehicle [J]. Acta Armamentarii, 2020, 41(7): 1249-1261.
[4]	ZHANG Sheng, WANG Qiang, HE Xiao-hui, GAO Ya-ming， WANG Xin-wen. Simulation and Optimization of Hydraulic Spool Valve Opening Process Based on Fluid-structure Interaction [J]. Acta Armamentarii, 2017, 38(3): 608-615.
[5]	LYU Sheng-tao, JI Dan-dan, LIU Rong-zhong, GUO Rui, MA Xiao-dong. Research on Aerodynamic Characteristics of Terminal Sensitive Projectile with S-S-shaped Flexible Wings [J]. Acta Armamentarii, 2017, 38(1): 50-58.