一种弹体排气缓释结构设计方法与试验研究
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摘要
弹体排气缓释结构是提升武器弹药热安全性的重要方法之一。文中基于弹体内炸药分解、燃烧引起的压强增长率与排气孔压强释放率之间的平衡关系,设计了一种弹体排气缓释结构,并利用自行设计的烤燃试验装置,以熔铸炸药RHT-1为研究对象,试验研究了慢速烤燃和火烧条件下排气缓释结构的作用效果。结果表明,排气缓释结构显著的降低了熔铸炸药火烧时的反应等级,同时延长了其慢速烤燃时的反应时间,相对地提高了熔铸炸药慢速烤燃时的安全性。研究结果可为弹药的装药设计提供参考。
The safety of weapons to unplanned thermal stimuli,caused by fires or other heating sources,can be improved by venting of projectile body. One kind of venting was developed in this paper based on balance between pressure rise rate in warhead and pressure decay rate of venting equipment. To verify rationality of the proposed venting,some apparatuses of cook-off test for explosive were designed,the effects of venting equipment on the slow cook-off and fast cook-off tests for melt-cast explosive RHT-1 were studied,and the experimental results were compared with those of tests without venting equipment. It is shown that the reaction types of melt-cast explosive during fast cook-off test are significantly affected by the venting equipment,and the reaction time in slow cook-off test is delayed obviously by the venting. The obtained results can provide a foundation and reference for designing charge of warhead.
The safety of weapons to unplanned thermal stimuli,caused by fires or other heating sources,can be improved by venting of projectile body. One kind of venting was developed in this paper based on balance between pressure rise rate in warhead and pressure decay rate of venting equipment. To verify rationality of the proposed venting,some apparatuses of cook-off test for explosive were designed,the effects of venting equipment on the slow cook-off and fast cook-off tests for melt-cast explosive RHT-1 were studied,and the experimental results were compared with those of tests without venting equipment. It is shown that the reaction types of melt-cast explosive during fast cook-off test are significantly affected by the venting equipment,and the reaction time in slow cook-off test is delayed obviously by the venting. The obtained results can provide a foundation and reference for designing charge of warhead.
引文
[1]Michael Fisher.Thermally activated venting system for IM[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Miami,Florida,2007.
[2]John Cook,Qineti Q.Mitigation of thermal threats to rocket motors by venting devices driven by contracting shape memory alloy wire[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Tucson,AZ,2009.
[3]Al-Shehab N,Pfau D,Baker E L,et al.Venting of antiArmor warheads to mitigate cook-off threats[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Munich,DE,2010.
[4]Michael Sharp.Active passive mitigation devices S3 assessment[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Las Vegas,NV,2012.
[5]Stephen Kelley.Venting techniques for penetrator warheads[C]∥Insensitive Munitions&Energetic Materials Technology Symposium,Munich,DE,2010.
[6]Madasen T,De Fisher S,Baker EL,et al.Explosive venting technology for cook-off response mitigation,Technical Report ARMET-TR-10003[R].2010.
[7]徐双培,胡双启,王东青,等.壳体密封性对小尺寸弹药快速烤燃响应规律的影响[J].火炸药学报,2009,32(3):35-37.
[8]智小琦,胡双启,肖志华,等.密封条件对钝化RDX快速烤燃响应特性的影响[J].火炸药学报,2010,33(1):31-33.
[9]Kinney G F,Sewell R G S.Venting of explosions,NWC TM 2448[R].China Lake,1974.
[10]Graham K J.Mitigation of fuel fire threat to large rocket motors by venting[C]∥Insensitive Munitions&Energetic Materials Symposium Munich,DE,2010.
[11]MIL-STD-2105D Non-nuclear ammunitions tests of risk assessment[S].The Department of National Defense of USA,2011.
[12]代晓淦,吕子剑,申春迎,等.火烧实验中不同尺寸PBX-2的响应规律[J].火炸药学报,2008,31(3):47-49.
[13]向梅,黄毅民,饶国宁,等.不同升温速率下复合药柱烤燃试验与数值模拟研究[J].爆炸与冲击,2013,33(4):394-400.
[2]John Cook,Qineti Q.Mitigation of thermal threats to rocket motors by venting devices driven by contracting shape memory alloy wire[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Tucson,AZ,2009.
[3]Al-Shehab N,Pfau D,Baker E L,et al.Venting of antiArmor warheads to mitigate cook-off threats[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Munich,DE,2010.
[4]Michael Sharp.Active passive mitigation devices S3 assessment[C]∥Insensitive Munitions and Energetic Materials Technology Symposium,Las Vegas,NV,2012.
[5]Stephen Kelley.Venting techniques for penetrator warheads[C]∥Insensitive Munitions&Energetic Materials Technology Symposium,Munich,DE,2010.
[6]Madasen T,De Fisher S,Baker EL,et al.Explosive venting technology for cook-off response mitigation,Technical Report ARMET-TR-10003[R].2010.
[7]徐双培,胡双启,王东青,等.壳体密封性对小尺寸弹药快速烤燃响应规律的影响[J].火炸药学报,2009,32(3):35-37.
[8]智小琦,胡双启,肖志华,等.密封条件对钝化RDX快速烤燃响应特性的影响[J].火炸药学报,2010,33(1):31-33.
[9]Kinney G F,Sewell R G S.Venting of explosions,NWC TM 2448[R].China Lake,1974.
[10]Graham K J.Mitigation of fuel fire threat to large rocket motors by venting[C]∥Insensitive Munitions&Energetic Materials Symposium Munich,DE,2010.
[11]MIL-STD-2105D Non-nuclear ammunitions tests of risk assessment[S].The Department of National Defense of USA,2011.
[12]代晓淦,吕子剑,申春迎,等.火烧实验中不同尺寸PBX-2的响应规律[J].火炸药学报,2008,31(3):47-49.
[13]向梅,黄毅民,饶国宁,等.不同升温速率下复合药柱烤燃试验与数值模拟研究[J].爆炸与冲击,2013,33(4):394-400.