为了研究次口径舰炮制导炮弹弹托与炮弹的分离安全性及分离过程中的气动干扰,采用基于动网格技术的非定常CFD数值模拟方法,同时耦合求解弹托六自由度弹道方程,对弹托与炮弹的分离过程进行了模拟计算。给出了分离过程中炮弹和弹托各自的气动特性,及弹托分离轨迹和姿态角变化规律,分析了弹托与弹体间的气动干扰特性。结果表明,弹托能够与炮弹安全分离,在分离初期炮弹和弹托之间存在显著的气动干扰,分离一定距离后弹托对炮弹的气动干扰消失。文中为次口径舰炮的弹托分离技术研究提供了数据支撑和理论依据。

In order to research aerodynamic interference of separation between sabot and projectile and separation safety during this process, the sabot separation process was simulated based on dynamic grid technology by using unsteady CFD numerical simulation method, and the separation process of the projectile was simulated by coupling of six degree-of-freedom ballistic equation at the same time. All aerodynamic characteristics of the shells and sabots, trajectory of sabot separation, and changing law of attitude angle were given in this paper. Then the aerodynamic interference characteristics between the sabot and the projectile were analyzed. The results show that sabot can separate from projectile security, but there is significant aerodynamic interference during early separation, aerodynamic interference will disappear after a certain distance. This paper provides data support and theoretical basis for sabot separation of naval gun guided projectile.