关键词: 遥控武器站, 动力学仿真, 刚柔耦合, 力学特性, 射击扰动

Abstract: To enhance the precise strike capability and environmental adaptability of the light remote weapon station (LRWS), it is essential to study the mechanical characteristics and firing disturbances under firing load conditions. A small-caliber assault rifle was selected as the research object, and based on the matching structure of the LRWS, a rigid-flexible coupled firing dynamics model of the system was established. Simulation analyses and firing tests were conducted under various firing conditions. The results show that under single-shot conditions, the response time to the first peak of motor impact torque is within 35 ms, with the azimuth motor experiencing a more significant impact, reaching a peak of 182.98 N·m, approximately 1.8 times that of the elevation motor. During burst firing, the coupling of residual energy with the impact load of the next shot causes the motor torque oscillation amplitude to increase by approximately 50%. Additionally, the weapon’s inherent RF instability also affects firing disturbances. The simulation results are in good agreement with the live-fire test results, validating the accuracy of the rigid-flexible coupled firing dynamics model. Further studies reveal that introducing a buffer between the weapon and the mounting structure can significantly reduce the impact torque and firing disturbances experienced by the motor. The 100-meter circular error probable in five-round burst firing is reduced by 45.8%, significantly improving shot grouping and overall firing accuracy.

Key words: remote-controlled weapon stations, dynamic simulation, rigid-flexible coupling, mechanical characteristics, firing disturbances