Numerical Simulation of Radar Scattering Characteristics of Spherical Convergent Rap Nozzle with Different Throat Shape

摘要：

Combining iterative physical optic method (IPO) with equivalent edge currents method (EEC), a code for calculating the radar scattering characteristics of the nozzle was developed. The reliability of it has been validated by calculating a model introduced from a reference. The numerical simulation of radar cross section (RCS) for five spherical convergent flap nozzles (SCFN) with different width-height ratio of throat was performed in the azimuth angles of -40° ≤θ≤0°. The results show that the code developed is reliable. The width-height ratio of throat is able to affect the RCS values of nozzle cavity. Under the two conditions of horizontal and vertical polarization, the average edge diffraction RCS of the SCFN is about 23dB and 21dB. which total RCS value of model P2 is lower than that of other models.

关键词： IPO EEC RCS SCFN

作者: GAO Xiang YANG Qing-zhen CHEN Li-hai CUI Jin-hui

作者单位: School of Engine and Energy,Northwestern Polytechnical University, Xian, China

会议类型: 国际会议

会议名称: 4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)

会议地点: 西安

会议语种:英文

页码: 688-692

在线出版日期: 2012-09-10（万方平台首次上网日期，不代表论文的发表时间）