未击发条件下某车载转管机枪动力学特性分析

Dynamic Characteristics Analysis of a Vehicular Gatling Gun Under the Bullets Unfired Condition

为了研究某型车载转管机枪在样机试验中连续射击时出现枪弹击发后未发火现象对于机枪射击精度的影响,以多刚体动力学和柔性多体动力学理论为基础,并基于相同路面建立了该型机枪刚柔耦合的路面-车体-机枪系统的虚拟仿真模型。综合考虑轮胎与地面、车体与机枪之间的相互作用,仿真模拟了样机的射击试验过程。对机枪在枪弹完全击发与未完全击发时的情况分别进行了系统动力学分析和外弹道计算,获得了机枪的响应特性和弹着点散布情况。通过对试验数据和仿真结果的对比分析,得出枪弹未完全击发时对机枪射击精度的影响程度,为进一步研制该型车载机枪提供支持。

To study the influence of accident phenomenon when the bullets include fall-off of cartridge and ricochet are not total firing to the firing accuracy of a certain vehicular Gatling gun, a virtual simulation with rigid-flexible coupling is established based on the same road surface, the rigid multi-bod and flexible body dynamics theories. Considering the interaction of the tires and road surface, machine gun, the prototype firing test is simulated. The dynamic analysis and calculation of e listics are completed in the accident bomb did not firing and firing completely conditions, and response characteristics and impact position are obtained. Through comparative analysis of the tal data and simulation results, the influence to the firing accuracy of bullet not firing is obtain analysis results have provided support for further study. y dynamics vehicle and xterior bal- muzzle experlmen- ed, and the