初始扰动是影响舰载武器发射精度的主要因素,但无法由试验测得。建立半约束期内火箭弹绕弹轴转动方程组模型,通过有限幅值随机激励仿真,得到了不同位置下舰船摇摆引起的舰载火箭初始扰动可能域。仿真结果表明将发射装置布置于舰船纵轴上能有效减小舰载火箭的初始扰动。因此将反舰导弹、防空导弹等对初始扰动要求高的武器布置于舰船纵轴上,将舰载火箭等对初始扰动要求低的武器布置在舰舯两舷有利于舰船甲板上各武器的统筹布局。

The initial disturbance is the main factor which affects launching precision of ship-borne weapon but it can not be measured by experiment. The model of ship-borne rocket during the semi-constraint period was established and the presumable range of initial disturbance under different installation location excited by ship swaying motion was calculated by the method of limited range random excitation. The simulation results show that the initial disturbance will decrease effectively if the launching is fixed on longitudinal axis of ship. Therefore, it is beneficial for overall plan for arrangement of ship-borne weapons and the deck of warship that fixing launching of weapons which raise high demand for initial disturbance such as anti-ship missile and defense missile on longitudinal axis of ship and both side of mid-ship section for low demand for initial disturbance such as ship-borne rocket.