摘要
在内径为0.2m、高5.4m的大型立式激波管内,同时对液体燃料和黑索金(RDX)粉末进行抛撒,采用底部直接起爆,得到了RDX-液体燃料-空气三相体系的爆压和爆速,利用烟熏技术得到了爆轰波的胞格结构、尺寸及长宽比。结果表明:90#溶剂油-空气两相体系的平均爆压为5~6 MPa,可以将其作为燃料-空气炸药的主燃料;向该燃料中添加硝酸异丙酯(IPN)可以降低其临界起爆能,添加RDX能够提高体系的爆速和爆压。此外,通过理论分析结合实验验证得出,多相爆轰的临界起爆能和爆轰胞格尺寸之间存在与气相爆轰类似的关系。
Liquid fuel and RDX dust were dispersed at the same time in a detonation tube with an inner diameter of 200 mm and length of 5.4m,and the cloud formed was initiated by high explosive from the bottom.Detonation pressure and velocity were obtained by the pressure measurement system,and photos and detonation cell were got by smoke trace technology.The results indicate that the 90#solvent oil-air cloud detonation pressure is 5-6MPa,which means the 90#solvent oil can be used as a main fuel of fuel-air explosive.By adding isopropyl nitrate(IPN),its critical initiation energy can be lowered,and by adding RDX the detonation pressure and velocity can be raised.The calculation and experimental verification also found a link between the critical initiation energy and detonation cell size of multi-phase detonation which is similar with the gaseous detonation.
出处
《高压物理学报》
CAS
CSCD
北大核心
2014年第6期671-679,共9页
Chinese Journal of High Pressure Physics
基金
国家青年科学基金(11102091)
高等学校博士学科点专项科研博导类基金(20113219110010)
关键词
三相爆轰
燃料-空气炸药
胞格结构
临界起爆能
立式激波管
直接起爆
three-phase detonation
fuel-air explosive(FAE)
detonation cell
critical initiation energy
vertical shock tube
direct initiation
