轴对称塞式喷管电磁散射特性数值模拟

推进技术 ›› 2018, Vol. 39 ›› Issue (1): 86-91.

轴对称塞式喷管电磁散射特性数值模拟

陈玲玲,杨青真,陈立海,施永强

西北工业大学动力与能源学院，陕西西安 710129,西北工业大学动力与能源学院，陕西西安 710129,西北工业大学动力与能源学院，陕西西安 710129,西北工业大学动力与能源学院，陕西西安 710129

发布日期:2021-08-15
作者简介:陈玲玲，女，博士，研究领域为发动机总体设计。E-mail: chen.lingling@outlook.com 通讯作者:施永强，男，博士，副教授，研究领域为叶轮机械气动热力学、发动机内流气动热力学、发动机隐身。

Numerical Simulation of Radar Scattering Characteristics of Axisymmetric Plug Nozzle

School of Power and Energy，Northwestern Polytechnical University，Xi’an 710129，China,School of Power and Energy，Northwestern Polytechnical University，Xi’an 710129，China,School of Power and Energy，Northwestern Polytechnical University，Xi’an 710129，China and School of Power and Energy，Northwestern Polytechnical University，Xi’an 710129，China

Published:2021-08-15

摘要/Abstract

摘要： 为研究塞锥存在对喷管雷达隐身特性的影响，以涡扇发动机轴对称喷管为基础，设计了加有不同锥度塞锥的塞式喷管；运用自主开发的基于物理光学迭代(IPO)和等效边缘电磁流(EEC)方法的程序对各型塞式喷管的雷达散射特性进行了数值计算并与原轴对称喷管特性进行对比分析。结果表明:塞式喷管能够有效降低喷管雷达散射截面(RCS)；但0°仰俯角附近会有局部升高，在水平极化和垂直极化方式下RCS值分别比原喷管最大增大8.14%，11.77%；存在最优锥度，在水平和垂直极化方式下都能够最大程度减小喷管总场RCS均值，使得其比原喷管分别减缩13.2%，15.2%。

关键词: 塞式喷管；塞锥；后锥半锥顶角；雷达散射截面(RCS)

Abstract: To investigate the radar stealth characteristics of the nozzle with plug， based on the axisymmetric nozzle from a certain turbofan engine， a series of nozzles with plugs of different taper were studied in the current work. The radar scattering characteristics of the nozzles were calculated by a program developed from Iterative Physical Optics (IPO) and Equivalent Edge Current (EEC). Compared with the baseline nozzle， except for the condition of zero degree elevation angles， in which the radar cross-section (RCS) increases by 8.14% and 11.77% under the condition of horizontal and vertical polarization， respectively， the RCS with plugs decreases effectively. And with the plug of the optimal taper， the RCS of the nozzle can be decreased by 13.2% and 15.2% under the condition of horizontal and vertical polarization， respectively.

Key words: Plug nozzles；Plug；Half cone-apex angle of rear plug；Radar cross-section (RCS)

陈玲玲,杨青真,陈立海,施永强. 轴对称塞式喷管电磁散射特性数值模拟[J]. 推进技术, 2018, 39(1): 86-91.

CHEN Ling-ling,YANG Qing-zhen,CHEN Li-hai,SHI Yong-qiang. Numerical Simulation of Radar Scattering Characteristics of Axisymmetric Plug Nozzle[J]. Journal of Propulsion Technology, 2018, 39(1): 86-91.

参考文献

[1] 张考, 马东立. 军用飞机生存力与隐身设计[M]. 北京:国防工业出版社, 2002.
[2] 杨涛, 杨青真, 李岳峰. 轴对称及二元喷管RCS的数值模拟研究[J]. 航空动力学报, 2011, 26(8): 1819-1823.
[3] 陈立海, 杨青真, 陈玲玲, 等. 不同喷口修形的二元收敛喷管RCS数值模拟[J]. 航空动力学报, 2012, 27(3): 513-520.
[4] 高翔, 杨青真, 母鸿瑞, 等. 不同宽高比的二元喷管电磁散射特性数值研究[J]. 推进技术, 2014, 35(6): 735-741. (GAO Xiang, YANG Qing-zhen, MU Hong-rui, et al. Numerical Simulation of Radar Scattering Characteristics for 2-D Nozzles with Different Aspect Ratios[J]. Journal of Propulsion Technology, 2014, 35(6): 735-741.)
[5] Cui Jinhui, Shang Shoutang, Yang Qingzhen, et al. Numerical Simulation of RCS for a Spherical Convergent Flap Nozzle with a Non-Rectangular Divergent Duct[C]. Korea: 30th Congress of the International Council of the Aeronautical Sciences, 2016.
[6] 杨胜男, 尚守堂, 邵万仁, 等. 球面收敛二元喷管电磁散射特性[J]. 航空动力学报, 2015, 30(12): 2983-2991.
[7] 郭霄, 杨青真, 施永强, 等. 介质涂覆位置对球面收敛喷管电磁散射特性影响[J]. 航空学报, 2017, 38(4): 1-9.
[8] 李岳锋, 杨青真, 高翔, 等. 基于迭代物理光学和等效边缘电流方法的S形进气道雷达散射截面研究[J]. 推进技术, 2013, 34(5): 577-582. (LI Yue-feng, YANG Qing-zhen, GAO Xiang, et al. Investigation on Radar Cross-Section of S-Shaped Inlets Using IPO and EEC Method[J]. Journal of Propulsion Technology, 2013, 34(5): 577-582.)
[9] 郭霄, 杨青真, 李岳锋, 等. 大宽高比S 形二元喷管电磁散射特性研究[J]. 电子设计工程, 2014, 22(12): 13-17.
[10] 高翔, 施永强, 杨青真, 等. 介质涂覆位置对双S弯排气系统电磁散射特性影响研究[J]. 物理学报, 2015, 64(2): 1-10.
[11] Harmon T. System Engineer and Integration Strategy on the X-33 Linear Aerospike Engine[R]. AIAA 97-3317.
[12] Aguilar R. Real Time Simulation of the X-33 Aerospike Engine[R]. AIAA 2001-3562.
[13] Zebbiche T. Supersonic Plug Nozzle Design[R]. AIAA 2005-4490.
[14] Georgiadis N J, DallBello T W, Trefny C J, et al. Aerodynamic Design and Analysis of High Performance Nozzles for Mach 4 Accelerator Vehicles[R]. AIAA 2006-16.
[15] Hiley P E, Wallace H W, Booz D E. Study of Noz-Axisymmetric Nozzles Installed in Advanced Fighter Aircraft[R]. AIAA 75-1316.
[16] Banken G J, Cornette W M, Gleason K M. Investigation of Infrared Characteristics of Three Generic Nozzle Concepts[R]. AIAA 80-1160.
[17] Chu C W, Der J J, Wun W. A Simple 2D-Nozzle Plume for IR Analysis[R]. AIAA 80-1808.
[18] 戴梧叶, 刘宇, 马彬. 塞式喷管三维流场的数值模拟[J]. 北京航空航天大学学报, 2002, 28(5): 601-604.
[19] 王长辉, 刘宇, 覃粒子. 塞式喷管设计和性能验证[J]. 空气动力学学报, 2008, 26(2): 139-144.
[20] 陈俊. 涡扇发动机塞式喷管气动与红外辐射特性研究[D]. 南京:南京航空航天大学, 2011.
[21] Basteiro F, Rodriguez J L, Burkholder R J. An Interactive Physical Optics Approach for Analyzing the Electromagnetic Scattering by Large Open-Ended Cavities[J]. IEEE Transaction on Antennas and Propagation, 1995, 43(4): 356-361.
[22] Michaeli A. Equivalent Edge Currents for Arbitrary Aspects of Observation[J]. IEEE Transaction on Antennas and Propagation, 1984, 32(3): 252-258.
[23] Michaeli A. Elimination of Infinities in Equivalent Edge Currents, Part I: Fringe Current Components[J]. IEEE Transaction Antennas and Propagation, 1986, 34(7): 912-918.
[24] 汪茂光. 几何绕射理论[M]. 西安:西北电讯工程学院出版社, 1985.
[25] Polycarpou Anastasis C, Balanis Constantine A, Birtcher Craig R. Radar Cross Section of Trihedral Corner Reflectors Using PO and MEC[J]. Annals of Telecommunications, 1995, 50(5): 510-516.　　　　　　　　　　　　　*　收稿日期:2017-07-08；修订日期:2017-07-25。作者简介:陈玲玲,女,博士,研究领域为发动机总体设计。E-mail: chen.lingling@outlook.com通讯作者:施永强,男,博士,副教授,研究领域为叶轮机械气动热力学、发动机内流气动热力学、发动机隐身。 E-mail: yqshi@nwpu.edu.cn(编辑:朱立影)