外露外挂件及接合部外形对炮塔整体RCS的影响

Influence of the Shapes of Exterior Accessories and Joints of a Turret on Its Radar Cross-Section

利用结构外形隐身技术和物理光学法(PO),分析计算某型坦克的炮塔体、车长门、炮长门以及车长瞄准镜等炮塔主要外露外挂部件强散射源的雷达截面(RCS),研究了这些强散射体外表面的空间位置对其RCS的影响,并据此进行了雷达隐身优化设计.提出了满足战术技术要求的炮塔体和炮塔主要外露外挂部件的隐身设计方案,评估了部件新的设计方案及其连接条件对整个炮塔雷达截面的影响.仿真计算结果表明,对炮塔外露外挂部件的外形及其连接部位进行适当的雷达隐身整形处理,可显著降低炮塔在雷达主要威胁角域内的RCS.

Using shape stealth design technique and the physical optics based simulation calculations, the stealth property of a tank turret and its exterior accessories is analyzed from the calculated radar cross-section (RCS) of the turret and accessories that can be regarded as strong radar electromagnetic-scattering sources. Consequently, the optimum shapes of the base turret, hatches for the gunner and commander, and the commander's sight of a tank are designed with a view to reduce its radar signature under the constraint conditions that these shapes meet the tactic and technical requirements. Influence of the shapes of the exterior accessories and joints of turret on the total RCS of the turret is evaluated. The results indicate that the proposed optimum shapes of the base turret, its exterior accessories and joints can significantly reduce the total RCS of the turret in the domain of main threat radar angles.