弹道学报2025，Vol.37Issue(2)：99-104,6.DOI:10.12115/ddxb.2024.04009
燃爆发射产物二次反应对内弹道的影响研究
Research on the Influence of Secondary Reaction of Deflagration Launch Products on Internal Ballistics
李赵洋 1林国问 2姚琳 3郭春晓 3任杰1
作者信息
- 1. 南京理工大学 机械工程学院,江苏 南京 210094
- 2. 中国航天科工四院,北京 100854
- 3. 南京模拟技术研究所,江苏 南京 211151
- 折叠
摘要
Abstract
The high-temperature,high-pressure,partially reacted jet ejected from the deflagration launcher undergoes secondary reactions with the ambient air when entering the initial the chamber,generating intense thermal shock and ablation effects on the launcher.To mitigate the adverse impacts,the influence of secondary reactions on the deflagration launcher and projectile interior ballistics was investigated in this paper.Thermodynamic properties of the launcher's deflagration products were calculated using the minimum free energy method.The chemical reaction mechanism of secondary reactions within the initial chamber was described based on the finite-rate/eddy-dissipation model.The projectile's motion was simulated via a dynamic mesh layering technique,establishing a secondary reaction flow model in the initial chamber with moving boundaries.The validity of the model was verified through comparison with experimental data.Research results indicate that chambers experiencing secondary reactions exhibit faster temperature rise rates and higher peak temperatures compared to non-reaction chambers.As O2 in the chamber depletes,temperatures gradually decrease.The energy released from secondary reactions enables the projectile to achieve greater acceleration in shorter time intervals while maintaining peak acceleration levels briefly.Consequently,the projectile attains higher velocity and greater displacement within the equivalent timeframe.Expanding the initial chamber volume can alleviate excessive projectile loading by reducing acceleration growth rates and peak acceleration magnitudes.These findings provide theoretical foundations for the design of deflagration launcher and interior ballistics performance.关键词
内弹道/燃爆发射/二次反应/数值模拟Key words
interior ballistics/deflagration launch/secondary reaction/numerical simulation分类
军事科技引用本文复制引用
李赵洋,林国问,姚琳,郭春晓,任杰..燃爆发射产物二次反应对内弹道的影响研究[J].弹道学报,2025,37(2):99-104,6.
