人-枪系统中不同自动方式对枪械后坐作用影响研究

为了研究枪械在人-枪系统中后坐作用的特性和影响因素，基于不同自动方式下枪械的内弹道特性、后坐机理以及枪机运动，结合刚体动力学和碰撞动力学，分别建立了在立姿射击时，考虑人-枪作用的导气式和自由枪机式两种枪械后坐作用的动力学模型，并对枪械在人-枪作用过程中的后坐作用力、后坐速度、肩部水平位移等特征物理量进行数值分析和实验分析。研究结果表明：两种不同自动方式的枪械后坐作用力、射手的后坐速度和位移随后坐时间的变化规律、最大值出现的次数和时间并不相同。

Analysis and Implementation of Rife-based Ranging Algorithm for Linear Frequency Modulated Continuous Wave Radar

In order to study the characteristics and influence factors of recoil effect of gun in the man-gun system, two dynamic models for the recoil effects of gas-operated and simple blowback bolt type guns for firing at the standing position are established in consideration of man-gun interaction. The models are based on gun interior ballistic properties, recoil mechanism and bolt movement in different automatic ways, rigid-body dynamics and collision dynamics. The gun recoil force, recoil velocity and shoulder horizontal displacement in man-gun system are numerically and experimentally analyzed. The research results show that the rules of the changes of gun recoil force and the shooter' recoil velocity and displacement withe recoiling time, and the number of occurrences and time of the maximum are not same for two different kinds of automatic gun.