超远程制导炮弹滚转控制特性数值模拟

Extended Range Guided Munition Rolling Control Characteristics Numerical Simulation

以三维N-S方程为出发方程,采用S-A湍流模型,对超远程制导炮弹的绕流场进行了数值模拟,研究鸭舵不能进行滚转控制的机理。数值模拟结果表明,对于固定尾翼鸭式布局导弹,当鸭舵做副翼偏转进行滚转控制时,在尾翼上产生数值很大的反向诱导滚转力矩,使鸭舵难以进行滚转控制。通过分析提出了鸭舵不能进行滚转控制的解决措施。

Based on the three-dimension N-S equations closed with S-A turbulence model, the computational fluid dynamics （CFD） numerical simulation was used to investigate the rolling control characteristics of extended range guided munition（ERGM）. The mechanism of that canard was ineffective as rolling control devices was analyzed. The computational results showed that canard was ineffective as roll control devices for canard-controlled missiles with fixed-tail, because noticeable reverse rolling control moments were induced when the canard have roll command deflection. Base on analyses the solution to solve this problem of extended range guided munition was proposed.