Numerical Simulation of RCS for Converged Nozzle with Different Outlet Shape

摘要：

The nozzle cavity is a mean radar scattering source of aircrafts, playing an important role in aircraft stealth performance. Thus the investigation of its radar cross section (RCS) characteristics is of important meaning to the RCS analysis and stealth design of aircrafts. In this paper, the iterative physical optic (IPO) approach was combined with equivalent edge currents (EEC) method;considering influence of the diffraction field, the RCS characteristics of different outlet shape were obtained. Simultaneously, a judging method on the contour line of outlet shape was proposed. On this basis, the RCS characteristics of the converged nozzles with five different outlet shapes were researched. It is shown that the program developed in this paper owns good calculation accuracy.

关键词： converged nozzle radar cross-section (RCS) iterative physical optic (IPO) equivalent edge currents (EEC)

作者: LI Yue-feng YANG Qing-zhen GAO Xiang WU Zheng-ke

作者单位: School of Power 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: 714-719

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）