航空科学技术
航空科學技術
항공과학기술
Aeronautical Science and Technology
2015年
9期
64-68
,共5页
弹射救生%爆炸切割%爆炸冲击%超压%爆炸冲击防护
彈射救生%爆炸切割%爆炸遲擊%超壓%爆炸遲擊防護
탄사구생%폭작절할%폭작충격%초압%폭작충격방호
ejection escape%explosive cutting%pyroshock%overpressure%pyroshock protection
根据人体听觉损伤安全极限和非听觉损伤安全极限,结合爆炸切割清理弹射通道技术的工程实践,确定了飞行员弹射时对爆炸冲击的损伤安全极限。将爆炸冲击波对飞行员的影响,简化成爆炸冲击波在自由场的传播对飞行员的影响,提出了爆炸冲击超压的估算公式。通过爆炸切割过程的物理描述,提出避免爆炸冲击及飞散物对乘员的损伤影响,需要重点研究切割索保护套或者类似结构,采用了芳纶布、芳纶布增强橡胶、芳纶纤维增强橡胶、橡胶等四种材料进行了爆炸切割防护试验,对4种不同材料的爆炸冲击防护效果进行了对比。最后确定采用橡胶作为防护材料,进行了单件试验和两件试验的爆炸冲击的对比,提出两件相比单件爆炸冲击的叠加影响。
根據人體聽覺損傷安全極限和非聽覺損傷安全極限,結閤爆炸切割清理彈射通道技術的工程實踐,確定瞭飛行員彈射時對爆炸遲擊的損傷安全極限。將爆炸遲擊波對飛行員的影響,簡化成爆炸遲擊波在自由場的傳播對飛行員的影響,提齣瞭爆炸遲擊超壓的估算公式。通過爆炸切割過程的物理描述,提齣避免爆炸遲擊及飛散物對乘員的損傷影響,需要重點研究切割索保護套或者類似結構,採用瞭芳綸佈、芳綸佈增彊橡膠、芳綸纖維增彊橡膠、橡膠等四種材料進行瞭爆炸切割防護試驗,對4種不同材料的爆炸遲擊防護效果進行瞭對比。最後確定採用橡膠作為防護材料,進行瞭單件試驗和兩件試驗的爆炸遲擊的對比,提齣兩件相比單件爆炸遲擊的疊加影響。
근거인체은각손상안전겁한화비은각손상안전겁한,결합폭작절할청리탄사통도기술적공정실천,학정료비행원탄사시대폭작충격적손상안전겁한。장폭작충격파대비행원적영향,간화성폭작충격파재자유장적전파대비행원적영향,제출료폭작충격초압적고산공식。통과폭작절할과정적물리묘술,제출피면폭작충격급비산물대승원적손상영향,수요중점연구절할색보호투혹자유사결구,채용료방륜포、방륜포증강상효、방륜섬유증강상효、상효등사충재료진행료폭작절할방호시험,대4충불동재료적폭작충격방호효과진행료대비。최후학정채용상효작위방호재료,진행료단건시험화량건시험적폭작충격적대비,제출량건상비단건폭작충격적첩가영향。
According to safety limits of human auditory organ damage and human non-auditory injury, and considering the engineering application of explosive cutting on clearance ejection path, the damage safety limits of pilot was revealed during ejection. Pyroshock effect on pilot was simpliifed as the propagation of pyroshock in free air ifelds, and the estimation formula of pyroshock overpressure was proposed. The physical process of explosive cutting was described in order to avoid the crew from hurt by pyroshock and explosive remainders. Research was emphasized on the protector of linear shaped charge(LSC) or similar structure. Four sorts of material involving Kevlar fabric, Kevlar fabric reinforced rubber, Aramid ifber reinforced rubber and rubber, were applied to carry explosive cutting protection experiment, the protective outcome of these different material was contrasted. And then rubber was selected as the ideal protective material to do the single specimen test and dual specimen test to analyze the explosive effect. Comparison of pyroshock effect for single specimen and dual specimen was conducted.