车辆振动对机枪射击密集度的影响分析

Analysis on Effect of Vehicle Vibration on Firing Dispersion of Machine Gun

为了研究车辆状态及车辆振动对机枪射击密集度的影响程度,降低车辆对车载机枪射击密集度的不利影响,基于多体动力学、汽车地面力学及气体动力学的理论,建立了车载大口径机枪的动力学模型.分析了机枪射击过程中,车辆处于自由状态及制动状态下车辆的稳定性与枪口的跳动情况,对比分析了不同轮胎刚度对机枪射击密集度的影响.结果表明:机枪射击时制动车辆轮胎或提高车辆轮胎刚度对提高机枪的射击密集度有利.研究结果为车载大口径机枪的运用与总体设计方案的优化提供了方向.

To study the effects of vehicle state and vehicle vibration on the firing dispersion of machine-gun and reduce the adverse effects, the dynamic model of a vehicle large-caliber machinegun was established based on multi-body dynamics, vehicle-terramechanics and gas dynamics theory. The stability of vehicle and the muzzle vibration while the car is free and braked were analyzed,and the effect of different tire stiffness on the firing dispersion of machine-gun was compared. The analysis shows that braking the tire of the car or improving the stiffness of tires are benefit to improving the firing dispersion of vehicle machine-gun. The study result provides a direction for the use of large-caliber vehicle machine-gun and the optimization of overall design.