Penetration process of screw/seat ejection life-saving system through canopy:Numerical simulation

Li Zhi-qiang; Wang Zhi-hua; Liu Xiao-ming; Zhao Long-mao

doi:10.11883/1001-1455(2014)05-0567-07

Volume 34 Issue 5

Dec. 2014

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2014 > 34(5): 567-573

Li Zhi-qiang, Wang Zhi-hua, Liu Xiao-ming, Zhao Long-mao. Penetration process of screw/seat ejection life-saving system through canopy:Numerical simulation[J]. Explosion And Shock Waves, 2014, 34(5): 567-573. doi: 10.11883/1001-1455(2014)05-0567-07

Citation:

Li Zhi-qiang, Wang Zhi-hua, Liu Xiao-ming, Zhao Long-mao. Penetration process of screw/seat ejection life-saving system through canopy:Numerical simulation[J]. Explosion And Shock Waves, 2014, 34(5): 567-573. doi: 10.11883/1001-1455(2014)05-0567-07

Citation:

PDF( 3545 KB)

Penetration process of screw/seat ejection life-saving system through canopy:Numerical simulation

doi: 10.11883/1001-1455(2014)05-0567-07

1.
Shanxi Key Laboratory of Material Strength and Structure Impact, Taiyuan University of Technology, Taiyuan 030051, Shanxi, China
2.
Chengdu Aircraft Industrial(Group) Co.Ltd, Chengdu 610092, Sichuan, China

Received Date: 2013-02-27
Rev Recd Date: 2013-05-16
Publish Date: 2014-09-25

Abstract

Abstract

Aimed to an ejection life-saving system in combat aircraft with a canopy pre-damaged by miniature detonation cord, the followings were investigated as the accessibility of the ejection passageway, the damage modes of the canopy, and the impact injury degrees of the key human-body parts.The decoupled models were proposed for describing the impact of the aircrew/seat system into the canopy.In the proposed models, the two different layouts of the miniature detonation cord in the canopy were considered, i.e.Along the center of the canopy(the first layout)and around it(the second layout).Based on the above models, the process of the aircrew/seat system penetrating through the canopy was numerically simulated by using the nonlinear dynamics explicit algorithm.And the critical depths of the cutting slots were obtained for the two layouts.The simulated results indicate that the second layout is more helpful for generating an unobstructed passageway and relieving human impact injury than the first layout.
- mechanics of explosion,
- damage mode,
- decoupled model,
- ejection life-saving system,
- miniature detonation cord,
- canopy,
- impact injury

FullText(HTML)

References(16)

References

[1]	Sandstedt P. Experience of rocket seat ejection in the swedish air force: 1967-1987[J]. Aviation, Space, and Environmental Medicine, 1989, 60(6): 367-373. http://europepmc.org/abstract/MED/2705973
[2]	Milanov L. Aircrew ejection on the republic of bulgaria, 1953-1993[J]. Aviation, space, and environmental medicine, 1996, 67(4): 364-368. http://europepmc.org/abstract/MED/8900991
[3]	Moreno Vazquez J M, Duran Tededa M R, Garcia Alcon J L. Report of ejections in the spanish air force, 1979-1995: An epidemiological and comparative study[J]. Aviation, Space, and Environmental Medicine, 1999, 70(3): 686-691. http://europepmc.org/abstract/MED/10417005
[4]	Miller B A. Unassisted through canopy ejection experience[C]//Proceedings of the 20th SAFE annual symposium. 1982: 146-149.
[5]	丛红, 徐建仁, 刘力, 等.穿盖弹射对人体头、肩、膝部的损伤程度[J].航空军医, 1997, 25(5): 259-261. Cong Hong, Xu Jian-ren, Liu Li, et al. Human head and knee tolerance to impact produced by through-the-canopy ejection[J]. Chinese Journal of Aerospace Medicine, 1997, 25(5): 259-261.
[6]	Patrick L M, Lissner H R, Gurdjian E S. Survival by design head protection[C]//Proceedings of the 7th Stapp Car Crash Conference. 1963.
[7]	赵一明, 杨春信, 韩海鹰, 等.弹射救生过程数值计算及损伤风险评估[J].空气动力学学报, 2006, 24(3): 314-318. http://www.cnki.com.cn/Article/CJFDTotal-KQDX200603007.htm Zhao Yi-ming, Yang Chun-xin, Han Hai-ying, et al. Numerical calculation of ejection process and injury crisis evaluation[J]. Acta Aerodynamica Sinica, 2006, 24(3): 314-318. http://www.cnki.com.cn/Article/CJFDTotal-KQDX200603007.htm
[8]	Brinkley J W, Mosher S E. Development of acceleration exposure limits to advanced escape systems, implications of advanced technologies for air and spacecraft escape[R]. GARD-CP-472, 1989: 24-28.
[9]	李志强, 刘晓明, 赵勇刚, 等.微爆索线性切割航空有机玻璃的实验研究和有限元分析[J].爆炸与冲击, 2007, 27(5): 385-389. http://www.cnki.com.cn/Article/CJFDTotal-BZCJ200705001.htm Li Zhi-qiang, Liu Xiao-ming, Zhao Yong-gang, et al. Experimental study and finite element analysis of linear cutting aerial PMMA using micro detonation cord[J]. Explosion and Shock Waves, 2007, 27(5): 385-389. http://www.cnki.com.cn/Article/CJFDTotal-BZCJ200705001.htm
[10]	李志强, 赵隆茂, 刘晓明, 等.微爆索线型切割某战斗机舱盖的研究[J].航空学报, 2008, 29, (4): 1049-1054. http://d.wanfangdata.com.cn/Periodical/hkxb200804046 Li Zhi-qiang, Zhao Long-mao, Liu Xiao-ming, et al. Study on the linear shape cutting canopy of a warcraft with miniature detonating cord[J]. Acta Aeronautica Et Astronautica Sinica, 2008, 29, (4): 1049-1054. http://d.wanfangdata.com.cn/Periodical/hkxb200804046
[11]	李志强, 赵隆茂, 刘晓明, 等.微爆索布局对战斗机舱盖破裂影响的数值模拟[J].北京理工大学学报, 2009, 29(增刊): 170-173. Li Zhi-qiang, Zhao Long-mao, Liu Xiao-ming, et al. Numerical simulation of the influence of miniature detonating cord layout on fracturing warcraft[J]. Journal of Beijing Institute of Technology Natural Science Edition, 2009, 29(suppl): 170-173.
[12]	Li Zhi-qiang, Yao Xiao-hu, Zhao Long-mao. A computer simulation on human injury during the aircrew/seat through-the-canopy-ejection[J]. Applied Mechanics and Materials, 2011(55/56/57): 179-182. http://www.scientific.net/AMM.55-57.179
[13]	Berstad T, Hopperstad O S, Lademo O G, et al. Computational model of ductile damage and fracture in shell analysis[C]//The Second European LS-DYNA Conference. Gothenburg, Sweden, 1999.
[14]	Shalak R, Chinen S. Handbook of bioengineering[M]. New York: MeGraw-Hill, 1987.
[15]	MeElhaney J H. Dynamics response of bone and muscle tissue[J]. Journal of Applied Physiology, 1966, 21: 1231-1236. http://europepmc.org/abstract/med/5916656
[16]	LS-DYNA971keyword user's manual[M]. Livermore Software Technology, 2007.