In this paper, a novel launch dynamics measurement system based on the photoelectric sensor pair is built. The actual muzzle time (i.e. a time duration that originates from the initial movement to the rocket’s departure from the muzzle) and the muzzle velocity are measured. Compared with the classical methods, the actual muzzle time is obtained by eliminating the ignition delay. The comparative analysis method is proposed with numerical simulations established by the transfer matrix method for multibody systems. The experiment results indicate that the proposed measurement system can effectively measure the actual muzzle time and reduce the error of classical methods, which match well with the simulation results showing the launch dynamics model is reliable and helpful for further analysis and design of the MLRS.

本文建立了一种基于光电传感器对的新型发射动力学测量系统。测量实际的枪口时间（即从初始运动到火箭离开枪口的持续时间）和枪口速度。与传统方法相比，实际的枪口时间是通过消除点火延迟获得的。提出了比较分析方法，并通过传递矩阵法建立了多体系统的数值模拟。实验结果表明，所提出的测量系统能够有效地测量实际的炮口时间，减少传统方法的误差，与仿真结果吻合良好，表明发射动力学模型是可靠的，有助于进一步对MLRS进行分析和设计。