摘要
研究弹头构型、发射角及弹射速度对弹体跨介质稳定性的影响机制,为多样化弹道跨介质兵器/飞行器的设计提供试验及理论支持.开展弹体跨介质出水试验及数值仿真,经瞬时图像集解析获取弹体跨介质偏转角变化量及运动轨迹,构建高精度气/水跨介质数值模型,揭示弹体穿越气/水界面过程中弹头构型、发射速度、发射角对弹体承载分布及跨介质稳定性的作用机制.研究结果表明,弹体气/水跨介质数值模型计算误差<5%;同一弹体跨介质出水稳定性随发射速度、发射角增大而提高;相同发射工况时,各弹头构型跨介质出水稳定性:圆弹头>90°锥形头>120°锥形头>平弹头;跨介质弹体表面液膜形态对称性越好、液膜面积变化量越小则有利于减少弹体跨介质径向载荷振幅,提升跨介质稳定性.
The influence mechanism of the missile-head shape,launch angle and ejection velocity on the missile trans-phase stability was studied to provide the experimental and theoretical support for the design of diversified ballistic trans-phase weapon/aircraft.Carried out the missile water-to-air trans-phase experiments and numerical simulations,obtained the missile trans-phase deflection angle variation and trajectory through processing the transient images,established the high-precision air/water trans-phase numerical model,and the function mechanism of the missile head,launch velocity,launch angle on the load-sustaining distributions on the missile surface and the trans-phase stability as passing through the air/water interface was revealed.The research results indicated that the calculation error of the missile air/water trans-phase numerical model is<5%;for the same missile model,the water-to-air trans-phase stability increases as the launch velocity,angle increase;under the same launch conditions,the water-to-air trans-phase stability of different missile-head shapes:round head>90°conical head>120°conical head>flat head;the better symmetric water film shape on the missile surface and the smaller water film area variation amid trans-phase process will reduce the missile trans-phase radial load amplitude,which improves the trans-phase stability.
作者
朱睿
张焕彬
庄启彬
温潍齐
何星宇
刘志荣
ZHU Rui;ZHANG Huanbin;ZHUANG Qibin;WEN Weiqi;HE Xingyu;LIU Zhirong(School of Aerospace Engineering,Xiamen University,Xiamen,Fujian 361005,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2023年第1期45-53,共9页
Transactions of Beijing Institute of Technology
基金
装备预研教育部联合基金项目(6141A02033529)
“十三五”装备预研领域基金项目(61402060405)。
关键词
弹体
气/水跨介质
稳定性
偏转角
液膜
missile
air/water trans-phase
stability
deflection angle
water film
作者简介
朱睿(1980-),男,博士,副研究员,E-mail:zhurui@xmu.edu.cn;通信作者:刘志荣(1978-),男,硕士,工程师,E-mail:lzr1222@126.com.
