风扰动下的卷弧翼弹六自由度弹道模型及仿真

Modeling and Simulation of Six-Degrees-of-Freedom(6DOF) Trajectory of Missile with Wrap Around Fins in Disturbance of Wind Field

大气的动态特性主要包括常值风、风切变、突风和大气紊流等,大气扰动是引起弹道散布的主要因素之一。首先建立了导弹在风场扰动条件下的按231转动的地面发射坐标系中的六自由度(6DOF)模型,其次应用CFD方法计算了某种外形旋转导弹的气动系数,然后在模拟风场中仿真计算该旋转导弹的弹道。

Dynamic characteristics of atmosphere mainly include constant wind, shear wind, gust and atmospheric turbulence, and the atmospheric disturbance is the main one factor of bringing on trajectory distribution.Six-Degrees-of-Freedom （6DOF） trajectory model in Earth-Fixed coordinate system rotated by 231 method in disturbance of wind field is constructed, aerodynamic force coefficients of rotating missile are computed by CFD method, and trajectory of missile is simulated in wind field.