首发浮动的高初速榴弹机枪发射性能研究

为研究采用首发浮动技术的榴弹机枪(GMG)的动力学特性,建立GMG刚柔耦合动力学模型,并进行了20连发动力学计算。通过动力响应研究了浮动参数对射击密集度的影响。采用外弹道理论计算了20连发射击密集度,并与实验值进行比较,对动力学模型的准确性进行了验证。研究了浮动参数对武器架座力及射击密集度的影响规律。研究结果表明:建立的仿真计算模型可以有效预测GMG射弹散布,并可通过合理匹配浮动参数达到提高武器射击密集度、降低武器后坐力的目的。

Research on Launching Performance of GMG With High Muzzle-velocity Based on First-floating Technology

To study the dynamic behavior of grenade machine gun (GMG) based on the first-floating technique,a rigid-flexible coupling multi-body dynamic-model was established,and 20-rounds firing process of GMG was carried out based on the dynamic model.The effect of floating parameters on firing accuracy was studied.The firing accuracy was calculated based on the external ballistic theory,and it was compared with the result by experimental test,and the dynamic model was validated.The effects of floating parameters on cradle force and firing accuracy were studied.The results show that the proposed dynamic model can predict the firing accuracy effectively.The optimal floating parameters can be matched reasonably to improve firing accuracy and reduce the recoil force.