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常规飞机的机翼与外挂架构成 90°的二面角 ,成为飞机侧向的重要散射源 .为求在不改变机体结构的前提下减缩飞机侧向RCS ,采用齿形方案改变了挂架外形 ,消除了直角二面角结构 ,削弱了耦合效应 .计算结果显示 ,改形的国产某型战斗机的机翼 外挂架结构的RCS在侧向重点姿态角内降低了 9～ 1 3dBsm ,证明了齿形改形方案能明显改善飞机侧向的耦合散射效应 .在计算过程中使用了射线追踪法
Conventional aircraft wings and pylons form a dihedral angle of 90 °, becoming an important side-by-side scattering source of the aircraft. In order to reduce aircraft lateral RCS without changing the structure of the aircraft, the tooth profile is used to change the shape of the hanger , The right-angle dihedral structure is eliminated and the coupling effect is weakened. The calculation results show that the RCS of the wing pylon structure of a modified domestic fighter plane reduces by 9 to 1 3dBsm in the lateral attitude attitude angle, Shape modification program can significantly improve the lateral coupling scattering effect of the aircraft in the calculation using the ray tracing method