Influence on rocket fall points distribution due to random wind

Random wind is one of the important factors causing rocket fall points distribution. For the large and complex system, it is difficult to analyze the reliability using the analytic methods, but the computer simulation is an effective way. In this paper, simulation for flight control system is studied in detail by considering wind as typical random process. The engineered model of wind is established and randomized. While establishing the dynamics equations of the rocket's passive trajectory, theoretic analysis has been carried out using the traditional statistical analysis approach-Monte-Carlo method in order to simulate fall points distribution and predict rocket impact point under random wind. Through simulation, the effect results of all parameters characterizing the nature of wind on rocket fall points distribution are obtained and effect of wind on the rocket fall points distribution is analyzed effectively. This provides the experiment data for increasing the firing accuracy of the rocket in order to decrease the fall points distribution of the rocket and correct trajectory. The results of this paper provide some theoretic reference for trajectory design.