为适应智能可控弹药发动机喷口愈来愈小的发展趋势，针对三摆臂式扰流片矢量控制形式开展了气动力数值仿真。研究三摆臂式扰流片推力和侧向力调节能力。结果表明：推力随着主推角的增加而降低，最大推力损失仅与主推角有关；当主推角大于36°，扰流片间的气动干扰增强；侧向力随着侧向角和入口压力的增加而增大；当3个扰流片均位于发动机尾流中，前后方向和左右方向侧向力调节干扰小，且侧向力调节对推力影响小。

In order to adapt to the development trend that the nozzle of intelligent controllable ammunition engine is getting smaller and smaller, the aerodynamic numerical simulation was carried out for the vector control form of three swing arm spoiler. The results show that the thrust decreases with the increase of the main thrust angle. The maximum thrust loss is only related to the main thrust angle. When the main thrust angle is greater than 36 °, the aerodynamic interference between the spoilers increases. The lateral force increases with the increase of lateral angle and inlet pressure. As the three spoilers are all located in the engine wake, the interference of the lateral force adjustment in the front rear direction and the left and right direction is small, and the influence of the lateral force adjustment on the thrust is small.