尾翼脱壳穿甲弹对称脱壳的风洞实验

Wind Tunnel Experiments of Symmetric Discarding Sabot Disturbance of APFSDS Projectile

首次对不同的弹芯与卡瓣的相对位置,采用风洞实验的方法.得到了对称脱壳的相应纹影照片.分析照片表明,在弹芯与卡瓣之间的流场内存在十分复杂的气动力相互作用,其中包括激波的多次反射,激波引起的边界层分离现象及壅塞引起的激波.工程计算对称脱壳干扰而建立的物理模型应反映这样的激波反射、分离和壅塞现象.本文为计算卡瓣相对弹芯的翻转和分离过程,以及分析弹芯所受的脱壳干扰作了大量的准备.

This paper first has obtained the schlieren photoes of symmetric discardingsabot by using the method of wind tunnel for different relative postitions between thepenetrator and sabot.The photo analysis shows that there exists very complicatedaerodynamic interaction in the flowfield between the penetrator and sabot,including themulti-retlection of shock waves,separation phenomena of the boundary layer caused byshock wave and shock wave raised by choke.The established physical model for thesymmetric discarding sabot of engineering calculation should respond such shock wavereflection,separation and choke phenomena.It makes useful preparation for calculatingthe turning and separation processes of sabot relative to penetrator as well asanalysing the discarding sabot disturbance received by sabot.