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基于偏差模型的导弹发射动力学仿真是根据偏差来源建立相应的偏差模型,将偏差力、力矩与标准状态下的受力叠加得到导弹实际受力,再进行运动状态的求解.这种基于偏差模型的仿真系统既能够单独分析各项干扰因素对发射精度的影响,还能够综合多项干扰进行数值打靶模拟分析.针对某舰载倾斜发射导弹,仿真分析了发射臂振动、推力偏心、导轨不平、舰船运动等干扰因素对初始扰动的影响,并进行了5 000次数值打靶统计分析.在给定的干扰概率分布条件下,命中概率达到93.86%.
The missile launching dynamics simulation based on the deviation model builds the corresponding deviation model according to the source of the deviation and superimposes the bias force and the moment on the standard state force to obtain the actual force of the missile and then to solve the motion state. The simulation system can not only analyze the influence of various interference factors on the launch accuracy separately but also can simulate the numerical target shooting by combining a number of disturbances.Aiming at a shipborne inclined launch missile, the simulation of the launch arm vibration, thrust eccentricity, Ship movement and other disturbances on the initial disturbance, and carried out 5,000 numerical shooting statistical analysis.Under the given interference probability distribution, the hit probability reaches 93.86%.