临近空间高超音速飞行器气动与电磁散射控制设计协同技术研究

项目名称： 临近空间高超音速飞行器气动与电磁散射控制设计协同技术研究

项目编号： No.61201098

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 王明亮

作者单位： 北京航天长征飞行器研究所

项目金额： 28万元

中文摘要： 临近空间高超音速飞行器是目前各国研究的热点，高超音速飞行器在临近空间飞行过程中会产生等离子体鞘套，对飞行器隐身会产生影响。本项目从飞行器气动与隐身性能的优化设计的角度出发，重点研究临近空间高超音速飞行器的电磁散射特性机理和气动隐身协同设计方法。研究飞行器在临近空间高超音速飞行时的电磁散射特性，分析高超音速飞行条件对等离子体的影响，以及对等离子体环境中飞行器RCS特性的影响规律。以高超音速飞行器气动外形作为研究对象，研究气动外形设计对等离子体介质环境中飞行器的雷达隐身性能影响机理，并通过飞行器气动外形优化设计，开展气动与隐身协同设计方法研究，在保证飞行器良好的气动性能的条件下，提高飞行器的隐身性能。本项研究可为临近空间高超音速飞行器的气动隐身协同设计提供理论支撑。

中文关键词： 临近空间；高超音速飞行器；隐身；电磁散射；流场

英文摘要： The research on hypersonic flying vehicle in nera space has being highly focused. During the hypersonic flying of the flying vehicle in near space, the plasma layer will appear around the the flying vehicle. The appeared plasma layer will influence on the stealth performance of the flying vehicle. In the item, the hypersonic flying vehicle design method in near space is researched to coordinate the aerodynatics performance and the stealth performance, mainly including the two aspects: the electromagnetism scattering mechanism, and the aerodynatics and stealth coordinated design method. When the flying vehicle is flying at hypersonic, the plasma will form around the vehicle in near space, so the electromagnetism scattering mechanism of the flying vehicle needs to be researched. Firstly, the influence of the flying states on the formed plasma is analysed. Secondly, the radar cross section (RCS) of the flying vehicle in the plasma surroundings is computed. Finally, the influence rule of the hypersonic state on the RCS is researched and summarized. In addition, acordinary to the requirement of the hypersonic flying vehicle design in near space, the influence mechanism of the shape design on the RCS performance is computed and analysed. Based on the above research result, the coordinated design method between stealt

英文关键词： near space；hypersonic vehicle；stealth；electromagnetic scattering；hypersonic flow field