火炸药学报2025，Vol.48Issue(7)：671-678,8.DOI:10.14077/j.issn.1007-7812.202501002
不同温度条件下固体推进剂燃气弹射性能的数值模拟与试验验证
Experimental and Numerical Calculation Study on Gas Ejection Performance of Solid Propellant at Different Temperatures
李宝星 1邢鹏涛 1梅开 1舒慧明 1胡少青 1王中1
作者信息
- 1. 西安近代化学研究所,陕西西安 710065
- 折叠
摘要
Abstract
In order to study the gas ejection characteristics of solid propellant under different temperature conditions,a projec-tile ejection system with solid propellant gas generator was established,and a mathematical model of gas bottom projectile e-jection was established based on the internal ballistic curve of gas generator and the parameters of projectile ejection system.The ejection experiments and numerical calculation of gas generators at-40℃,+20℃ and+50℃ were carried out,the relationship between operating state of gas generator and ejection parameters were obtained.The numerical results show that with the increase of temperature,the exit velocity and average overload of simulated load gradually increase,and the exit time shortens.Under the condition of small initial volume,the overload peak value is very sensitive to the ignition process of gas generator,the pressure peak generated by ignition causes excessive overload.The numerical calculation parameters are basi-cally consistent with the experimental results at different temperatures.The errors of the pressure peak with low pressure cham-ber between the numerical results and the experimental results are 5.4％,4.0％and 3.8％,respectively,the errors of over-load peak are 7.8％,1.7％and 5.2％,respectively,the errors of loading exit velocity are 5.5％,2.9％and 2.2％,re-spectively.The relevant errors are within 8％,indicating that the numerical results agree well with the experimental results,which can provide support for the design and application of subsequent solid propellant gas projectile power device and system.关键词
物理化学/固体推进剂/燃气弹射特性/燃气发生器/弹射试验/数值计算/弹射参数Key words
physical chemistry/solid propellant/gas ejection characteristics/gas generator/ejection experiments/simulated calculation/ejection parameters分类
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李宝星,邢鹏涛,梅开,舒慧明,胡少青,王中..不同温度条件下固体推进剂燃气弹射性能的数值模拟与试验验证[J].火炸药学报,2025,48(7):671-678,8.
