为了研究攻角对尾翼稳定脱壳穿甲弹脱壳过程的影响,基于CFD的动网格技术和外弹道六自由度方程相结合,采用非结构网格和TVD有限体积格式,对不同攻角时脱壳过程进行数值仿真。得出了分离过程的流场激波云图,不同攻角下弹托质心的位置变化曲线、脱壳时间以及不同分离阶段弹芯表面压力分布曲线。对比分析各参数,得到脱壳弹在正负攻角飞行时,弹托分离时间增加,不利于弹托的分离。

In order to study influence of angle of attack on discarding process of APFSDS, based on CFD dynamic mesh technology and exterior ballistic 6-DOF equation, unstructured grids and TVD finite volume scheme were used for numerical analysis on discarding process at different angle of attack, and cloud of flow field shock in discarding process, curve of sabot's center-of-gravity position, discarding time and penetrator surface pressure distribution at different discarding stage were obtained.According to contrastive analysis, when APFSDS flying at positive and negative AOA, sabot discarding time increases, which is adverse to sabot separation.