高超声速飞行器尾迹转捩及其对雷达散射截面的影响

doi:10.3969/j.issn.1000-1093.2019.12.010

兵工学报 ›› 2019, Vol. 40 ›› Issue (12): 2467-2472.doi: 10.3969/j.issn.1000-1093.2019.12.010

高超声速飞行器尾迹转捩及其对雷达散射截面的影响

于哲峰，陈旭明，杨鹰，部绍清，谢爱民，黄洁，柳森

(中国空气动力研究与发展中心超高速空气动力研究所，四川绵阳 621000）

收稿日期:2019-02-21 修回日期:2019-02-21 上线日期:2020-02-14
通讯作者: 杨鹰（1994—），女，研究实习员，硕士 E-mail:15281633718@163.com
作者简介:于哲峰（1977—），男，研究员，硕士生导师，博士。E-mail:yuzf1997@sina.cn
基金资助:
国家自然科学基金项目（109020120、11272336）；国家重点基础研究发展计划项目（2014CB3402）

Wake Transition of the Hypersonic Vehicle and Its Influence on RCS

YU Zhefeng, CHEN Xuming, YANG Ying, BU Shaoqing, XIE Aimin, HUANG Jie, LIU Sen

(Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China)

Received:2019-02-21 Revised:2019-02-21 Online:2020-02-14

摘要/Abstract

摘要： 当飞行器在大气层中以高超声速飞行时，在下游形成的等离子体尾迹有可能引起雷达散射截面（RCS）突增现象，影响飞行器的探测、跟踪和识别。在自由飞弹道靶上开展高超声速模型流场特性试验研究，测量不同马赫数和靶室压力下模型尾迹的流场结构和转捩位置，利用转捩准则对试验结果进行分析，讨论了转捩位置变化对高超声速飞行器RCS特性产生的影响。结果表明：模型特征尺寸、飞行马赫数和压力等是影响转捩位置的主要参数；尾迹对高超声速飞行器RCS的影响非常复杂，将改变RCS大小，使雷达成像变模糊甚至产生假目标。

关键词: 高超声速飞行器, 弹道靶, 自由飞, 尾迹转捩, 雷达散射截面

Abstract: A long plasma wake is formed downstream when a hypersonic vehicle is flying in the atmosphere. It may cause a sudden increase in radar cross section (RCS), which affects the detection, tracking and identification of hypersonic vehicle. The flow field characteristics of hypersonic model in the free flight ballistic range is experimentally studied. The flow field structure and transition position of wake at different Mach numbers and chamber pressures were measured. The possible influence of transition position on the RCS characteristics of hypersonic vehicle is discussed. The results show that the model feature size, flight Mach number and chamber pressure are the main parameters affecting the transition position. The influence of the plasma wake on the hypersonic vehicle RCS is very complicated, which changes RCS and makes the radar imaging blurry, and even produce the fake targets. Key

Key words: radarcrosssection, hypersonicvehicle, ballisticrange, freeflight, waketransition

中图分类号:

V411.7

于哲峰，陈旭明，杨鹰，部绍清，谢爱民，黄洁，柳森. 高超声速飞行器尾迹转捩及其对雷达散射截面的影响[J]. 兵工学报, 2019, 40(12): 2467-2472.

YU Zhefeng, CHEN Xuming, YANG Ying, BU Shaoqing, XIE Aimin, HUANG Jie, LIU Sen. Wake Transition of the Hypersonic Vehicle and Its Influence on RCS[J]. Acta Armamentarii, 2019, 40(12): 2467-2472.

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第12期2019 年12月兵工学报ACTA
ARMAMENTARIIVol.40No.12Dec.2019

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高超声速飞行器尾迹转捩及其对雷达散射截面的影响

Wake Transition of the Hypersonic Vehicle and Its Influence on RCS

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