Research on canard configuration rocket level flight rocket with large airfoil surface, during rocket structure design, ensure rocket has large lift-drag ratio to meet requirements of level flight, and rocket also meets requirements of rolling control. Aiming at the problem, the paper uses aerodynamic analysis and fluent software simulation to analyze the influence of the different sweepback angle of the airfoil on the aerodynamic characteristics to rocket when theδ=20°. The simulation results show that under the action of rudder angle and angle of attack, when the airfoil sweepback angle isχ=50°, the rocket lift-drag ratio is bigger, the roll control ability is the best.%具有较大翼面的鸭式布局平飞火箭弹,在对火箭弹结构设计时,既要保证其在大马赫数范围内飞行具有较大的升阻比满足平飞要求,又要满足滚转控制能力的要求.针对这个问题,采用数值流体力学分析手段,运用fluent软件仿真分析了在差动舵偏角δ=20°时翼面不同后掠角对火箭弹气动特性的影响.仿真结果表明:在舵偏角和攻角同时作用下,翼面后掠角χ=50°时火箭弹升阻比较大,滚转控制能力也最好.
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