摘要
采用物理光学(PO)与一致绕射理论(UTD)混合方法,分别计算了某战斗机不携带副油箱以及腹部携带外挂副油箱、保形油箱时的雷达散射截面积(RCS)。根据计算结果,讨论了腹部油箱对飞机雷达隐身特性的影响。研究表明,在飞机下方及侧方RCS较小的方位,外挂副油箱对飞机RCS的贡献较为明显,而保形油箱对飞机RCS的贡献始终很小。
The hybrid method of PO （ Physical optics） and UTD （ Uniform theory of diffraction） was used to calculate the RCS（ Radar cross section） of a fighter without external tank, withventral tank, and with ventral conformal fuel tank. Based on the calculation results, the effects of the ventral tanks on RCS of the fighter was discussed. The result analysis shows that when carried under the fuselage and on the lower side of the fuselage, where there are a low RCS, the ventral tank has obvious contribution to the total RCS of the airplane, but the conformal fuel tank has only little effect on the radar signature.
出处
《飞机设计》
2007年第5期40-42,共3页
Aircraft Design
关键词
保形油箱
副油箱
RCS
飞机
conformal tank
external tank
RCS
airplane
