Design and experiment of explosive cutting device of bail-out emergency exit
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摘要: 爆破切割蒙皮形成应急出口在飞机上的应用国内尚属首次,其最大优点是节省救生准备时间.从爆炸减压、结构变形、结构强度、爆炸反向冲击等方面进行了理论计算,分析了高空爆破切割形成应急出口的可行性.针对切割索弯折过框及长桁降低切割效果问题,进行了摸底试验和余度试验,试验结果表明:只要过框位置切割索弯折后与框距离控制在2~8mm,过长桁位置切割索弯折后与长桁距离不大于2mm,就可以满足切割分离要求,切割索弯折后相互之间不产生影响.通过1∶1地面验证试验,证明了爆破切割蒙皮形成应急出口的可行性,并成功安装于某型飞机上.研究成果可为其他型号采用爆破切割技术提供理论基础和试验数据支持.Abstract: The technology of explosive cutting aircraft skin formed emergency exit was used in emergency evacuation of aircraft to save the time of evacuation. The feasibility of formed emergency exit through explosive cutting aircraft skin and fuselage frame in higher flight altitude was analyzed from the rapid decompression, construct distortion, construct intension and reverse impact of explosive to aircraft. Because of the exising of frame and rib, the linear shaped charge (LSC) must bend to round this construct which will reduce the cutting effects of LSC. In order to validate this phenomenon, plenty of experiment were carried out. The test result show that if the distance between the curving LSC and frame was controlled in 2 mm and 8 mm, and the distance between the curving LSC and rib was less than 2 mm, the request of cutting skin and frame can be satisfied. There is no interference between the curving LSC which round the frame and rib. The feasibility of explosive cutting aircraft skin formed emergency exit was proved by the full scale test of ground.
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Key words:
- bail-out /
- emergency evacuation /
- explosive cutting /
- emergency exit /
- linear shaped charge
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[1] Graham J A.Severance of polycarbonate and acrylic transparencies using linear shaped charge[C]//39th annual SAFE symposium. [S.l.]:SAFE,2001:80-92 [2] 姚小虎,韩强,刘晓明,等.微爆索切割航空有机玻璃的研究[J].航空学报,2006,27(1):152-156Yao Xiaohu,Han Qiang,Liu Xiaoming,et al.Study on micro-detonation chord cutting of aviation polymethyl methacrylate[J].Acat Aeronautic et Astronautica Sinica,2006,27(1):152-156(in Chinese) [3] 李志强,刘晓明,赵勇刚,等.微爆索线性切割航空有机的实验研究和有限元分析[J].爆破与冲击,2009,27(5):385-389Li Zhiqiang,Liu Xiaoming,Zhao Yonggang,et al.Experimental study and finite elemental analysis of linear cutting aerial PMMA using micro detonantion cord[J].Explosion and Shock Waves,2009,27 (5):385-389(in Chinese) [4] 赵茂隆,李志强.爆炸力学在航空弹射救生系统中的应用[M].北京:兵器工业出版社,2009:80-100Zhao Maolong,Li Zhiqiang.The application of explosive dynamic in aeronautics crew escape systems[M].Beijing:Weapons Industry Press,2009:80-100(in Chinese) [5] 王志华,李志强,任会兰,等.有机玻璃的几何形扰对爆炸切割影响的研究[J].高压物理学报,2010,24(1):43-47Wang Zhihua,Li Zhiqiang,Ren Huilan,et al.Finite element analysis on the influence of PMMA geometry on explosion cutting[J].Chinese Journal of High Press Physics,2010,24(1):43-47(in Chinese) [6] McGill T A.Emergency escape from commercial aircraft [C]//39th annual SAFE symposium.[S.l.]:SAFE,2001:120-130 [7] 寿荣中,何慧珊.飞行器环境控制[M].北京:北京航空航天大学出版社,2004:57-58Shou Rongzhong,He Huishan.Environment control of aircraft[M].Beijing:Beihang University Press,2004:57-58(in Chinese) [8] 张立藩.航空生理学[M].西安:陕西科学技术出版社,1989:45-50Zhang Lifan.Aeronautics physiology[M].Xi’an:Shanxi Science Technology Press,1989:45-50(in Chinese) -
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