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火箭羽流场电子密度及其RCS数值分析
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内容简介：在FLUENT＋GAMBIT 软件环境下，对不同高度下火箭羽流场结构及其电子密度分布进行了数值模拟，给出火箭羽流电子密度分布随高度的变化规律，并以此为基础构建了火箭羽流的HF波段电磁散射模型，对比计算了 HF（高频）波段下火箭箭体、火箭箭体＋羽流的雷达散射截面（RCS）。结果显示：在 HF波段的大部分入射角范围内，羽流会不同程度增加火箭的RCS 。
Abstract：The numerical simulation of the nozzle and plume flow field of a rocket under different alti-tude was performed using FLUENT and GAMBIT .The regulations of rocket plume electron density with different height were given .Furthermore ,the model of HF (high frequency ) electromagnetic scattering of the rocket plume was constructed .According to the results ,the distribution of electron density of rocket plume varies with the altitude .And radar cross section (RCS) of rocket and rocket with plume were obtained in HF band .As a result ,plume increases the RCS of rocket in most of the incident angles in HF band .
作者：胡耀垓, 项正, 赵正予, 张援农,
关键词：雷达散射截面, RCS, 数值分析, 电子密度, 雷达散射截面(RCS), 羽流, 固体火箭, 等离子体
Abstract：The numerical simulation of the nozzle and plume flow field of a rocket under different alti-tude was performed using FLUENT and GAMBIT .The regulations of rocket plume electron density with different height were given .Furthermore ,the model of HF (high frequency ) electromagnetic scattering of the rocket plume was constructed .According to the results ,the distribution of electron density of rocket plume varies with the altitude .And radar cross section (RCS) of rocket and rocket with plume were obtained in HF band .As a result ,plume increases the RCS of rocket in most of the incident angles in HF band .
作者：胡耀垓, 项正, 赵正予, 张援农,
关键词：雷达散射截面, RCS, 数值分析, 电子密度, 雷达散射截面(RCS), 羽流, 固体火箭, 等离子体
