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本文为了着重分析弹体的气动特性,固定了杆形头部的几何外形。本文研究的弹体为倒截锥加圆柱和圆柱体两种。实验马赫数从1.53至4.0。给出了前阻、法向力及压心随马赫数或几何参数的变化曲线。通过实验数据及流场分析表明,气流经弹体钝面边缘产生的离心力及弹体表面上的旋涡流场决定了杆形头部弹的弹体气动性能明显地不同于流线型头部弹的弹体气动性能。
In this paper, in order to analyze the aerodynamic characteristics of the projectile, the geometry of the rod-shaped head is fixed. The projectile studied in this paper is inverted truncated cone plus cylindrical and cylindrical two. The experimental Mach numbers ranged from 1.53 to 4.0. The curves of forward resistance, normal force and pressure center with Mach number or geometric parameters are given. The experimental data and flow field analysis show that the aerodynamic performance of the projectile of the rod-shaped head projectile is obviously different from that of the streamlined projectile projectile due to the centrifugal force generated by the airflow on the edge of the blunt face of the projectile and the vortex flow field on the projectile surface Body aerodynamic performance.