弹壳有序回收无链供弹装置动力学仿真分析

针对某小口径高射速自动炮在特殊环境下对供弹系统的空间布置需求，提出一种可实现弹壳有序回收的交叉螺旋无链供弹系统方案。建立交叉螺旋无链供弹装置的3维模型，运用多体动力学仿真软件建立无链供弹装置的虚拟样机模型，仿真分析其在4 000发/min射频下的供弹交接和弹壳回收运动规律。仿真结果表明：28发炮弹交接时轴向速度为0，轴向位移保持不变，供弹交接和弹壳回收过程平稳通畅，供弹系统结构可靠合理；该方案满足某型自动炮的设计需求，可为相关无链供弹系统的研制提供参考依据。

Dynamic Simulation Analysis of Chainless Ammunition Feeding Device for Orderly Recovery of Cartridge Case

In order to meet the special requirements of the feeding system of the high firing rate automatic gun of a small bore, a scheme of the cross helix chainless feeding system was proposed, which could realize the orderly recovery of cartridge cases. The 3D model of the cross screw chainless ammunition feeding device was established, and the virtual prototype model of the chainless ammunition feeding device was established by using the multi-body dynamics simulation software. The movement rules of the feeding, handover and cartridge case recovery were simulated and analyzed under the condition of 4 000 rounds/min RF. The simulation results show that the axial velocity is 0 and the axial displacement is constant when the 28 projectiles are handed over, the process of feeding handover and cartridge case recovery is smooth, and the structure of the feeding system is reliable and reasonable. The scheme meets the design requirements of a certain type of automatic gun, and can provide a reference for the development of related chainless feeding system.