摘要
为准确分析图像末制导炮弹内弹道性能及所受的发射过载,根据适配的火炮发射平台、发射装药特性与作用原理,研究了不同装药号发射的内涵本质,建立了图像末制导炮弹内弹道两相流模型,依据两种不同工况条件仿真与实测的相关数据对模型进行了合理性验证;以此为基础,基于验证的内弹道两相流模型,分析了某型图像末制导炮弹不同装药号发射时膛内压力波动、弹丸膛内运动等的演变规律,并通过搭建的发射过载工程计算模型,研究了该型图像末制导炮弹在各装药号下所受的发射过载特性。结果表明,两种验证工况下的膛底最大压力和弹丸炮口速度的相对误差均在2%以内,仿真与实测的膛底压力和膛内压力波随时间的变化规律吻合度也均较高;基于验证的模型获得的不同装药条件下图像末制导炮弹内弹道性能与发射过载变化规律与实际发射过程的一般规律一致。
To accurately analyze the interior ballistic performance and launch overload of image terminal guided projectiles,the connotative essence of the firing with different charge numbers was investigated based on the characteristics and working princi-ples of the adaptive launch platform and launch charge.The interior ballistic two-phase flow model for image terminal guided projectile was established,and its rationality was verified through simulations and measured data under two different working conditions.Building on this,the evolution laws of pressure fluctuation and projectile motion in the bore of a certain type of im-age terminal guided projectile with different charge numbers were analyzed using the verified interior ballistic two-phase flow model.Furthermore,the launch overload characteristics of this type of image terminal guided projectile with different charge numbers were studied through the established engineering calculation model of launch overload.The results show that the rela-tive errors of the maximum pressure at the bottom of the bore and the initial velocity of the projectile between two verification conditions are less than 2%,and the variation laws of the pressure at the bottom of the bore and the pressure wave in the bore with time are highly consistent between simulation and measurement.The internal ballistic performance and launch overload variation laws of the image terminal guided projectile with different charges obtained from the verified model are consistent with the general laws of the actual launching process.
作者
蔡灿伟
宁全利
邓海飞
张之文
刘立稳
CAI Can-wei;NING Quan-li;DENG Hai-fei;ZHANG Zhi-wen;LIU Li-wen(Army Academy of Artillery and Air Defense,Hefei 230031,China)
出处
《含能材料》
北大核心
2025年第6期645-657,共13页
Chinese Journal of Energetic Materials
基金
安徽省新时代研究生学术创新资助课题(2023xscx147)
院自主科研项目(PFXY230101029)。
关键词
内弹道
压力波
数值模拟
图像末制导炮弹
装药变换
发射过载
interior ballistic
pressure wave
numerical simulation
image terminal guidance projectile
charge transformation
launch overload
