The investigation of the aerodynamic properties and flow field of the hypervelocity projectiles at the ballistic range
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摘要: 本文描述的是研究爆炸成型发射弹(EFP)模型的流场及超高速空气动力特性所用的弹道试验设备;简要报导了记录全尺寸干涉图形的技术;对径向密度分布再现的方法进行了讨论;在零攻角实验时不同模型的空气动力阻力是采用简化方法来计算的;对各种不同EFP型式的气动稳定性提出了定性估计的方法;并阐述了用于组合体超高速飞行特性研究的数值计算技术的基本原理.Abstract: The range equipment for the investigation of the hypervelocity aerodynamic properties and flow field of explosively formed projectile(EFP) models is described.The technique of the full-scale interferogram recording is briefly reported.The procedure of the radial density distributions reconstruction is discussed.The aerodynamic drag of different models at zero angle of attack in the experiment is calculated using the simplified procedure.The qualitative considerations about aerodynamic stability for various EFP forms are proposed.The fundamentals of the numerical calculation technique applied to research of hypervelosity flight characteristics of composed bodies are formulated.
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