短脉冲推冲器点火性能的实验研究  

Study on Ignition Performance of Short Impulsive Thruster

作　　者：蒋新广[1] 李国新[1] 王志新[1] 劳允亮[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《含能材料》2009年第2期222-224,共3页Chinese Journal of Energetic Materials

基　　金：国家安全重大基础研究(513390303)

摘　　要：为了找出点火药量对短脉冲推冲器点火过程的影响规律及选择优化匹配的点火药量,选定B/KNO3和黑火药混合物作为点火药,采用模拟试验装置,测量得到不同点火药量情况下的压力-时间曲线。结果表明,随点火药量增大,点火延迟时间由1.48 ms降到1.06 ms,压力上升时间由0.37 ms降到0.16 ms,工作时间在1 ms左右变化。结果表明,增大点火药量可以降低点火延迟时间和压力上升时间。通过与性能目标值比较,选择80 mg点火药为较佳匹配。In order to find the effect of the ignition composition amount on the short impulsive thruster and select the right ignition composition amount,the simulated test device was used and the p-t curves were obtained. Results show that the ignition delayed time changes from 1.48 ms to 1.06 ms, and the pressure increasing time changes from 0.37 ms to 0.16 ms,and the action time is about 1 ms. It indicates that the ignition delayed time and the pressure increasing time can be shortened if the ignition composition amount is increased. The ignition composition amount of 80 mg is selected to meet the target requirements.

关 键 词：爆炸力学 短脉冲推冲器 点火药量 点火性能 

分 类 号：TJ45[兵器科学与技术—火炮、自动武器与弹药工程] V435[航空宇航科学与技术—航空宇航推进理论与工程]