| 腹部进气道电磁散射特性及RCS减缩方法研究 |
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| 引用本文： | 李启鹏,王和平.腹部进气道电磁散射特性及RCS减缩方法研究[J].航空计算技术,2009,39(6):67-70. |
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| 作者姓名： | 李启鹏 王和平 |
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| 作者单位： | 西北工业大学,航空学院,陕西,西安,710072 |
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| 摘 要： | 对建立的腹部S型进气道及前机身模型，采用多层快速多级子方法计算雷达散射截面，研究了进气道唇口斜切方式、上下唇边锯齿化、S型弯道长度、等直段安装吸波导流环和前机身形状对腹部进气道头向RCS的影响，并分析进气道与前机身的耦合散射特性。通过计算进气道参数改变前后的电磁散射特性，找出影响腹部进气道头向雷达散射截面的主要因素和RCS减缩方法，并对各种减缩方法的减缩效果作了对比分析。研究结果为腹部进气道的头向RCS减缩提供了技术依据。
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| 关 键 词： | 进气道 隐身技术 雷达散射截面 |
Research on Electromagnetic Scattering Characteristics and Radar Cross Section Reduction of Ventral Inlet |
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| LI Qi-peng,WANG He-ping.Research on Electromagnetic Scattering Characteristics and Radar Cross Section Reduction of Ventral Inlet[J].Aeronautical Computer Technique,2009,39(6):67-70. |
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| Authors: | LI Qi-peng WANG He-ping |
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| Institution: | LI Qi- peng, WANG He- ping ( College of Aeronautics, Northwestern Polytechnical University, Xi＇an 710072, China ) |
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| Abstract: | The Radar Cross Section （RCS） of Ventral Inlet has been investigated,with the method of Multilevel fast multipole algorithm for the established ventral S- inlet and fore body＇s three- dimensional model. It includes the influence of the oblique type of inlet lip, hackle lips, the length of S- bend, flow deflector and the shape of fore body on head- on RCS of ventral inlet and the analysis of the inlet and fore body＇s coupling scattering characteristics. Radar Cross Section Reduction （RCSR） and the main factor which affect head- on RCS of ventral inlet are found by comparing the performance of different parameter. This paper affords a technological basis for head- on RCSR of ventral inlet. |
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| Keywords: | air inlet stealth technique radar cross section |
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