项目名称: 磁窗天线增强等离子体鞘套透波特性研究
项目编号: No.11272336
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 于哲峰
作者单位: 中国空气动力研究与发展中心
项目金额: 66万元
中文摘要: 外加强磁场可以形成"磁窗",能够有效地增强右旋圆极化电磁波在等离子体鞘套中传播时的透波特性,但是在产生磁窗过程中(例如使用超导产生磁窗)有一系列的问题如磁体的重量和复杂性等需要克服。为解决这一问题,提出了天线和强永磁体一体化综合设计的新思路──"磁窗天线",以增强电磁波在等离子体鞘套中传播时的透波特性而又不显著地增加系统的重量和复杂性。为验证这种思路的可行性,拟开展本项目研究,主要内容包括:等离子体鞘套流场特性研究、电磁波在磁化等离子体中传播特性理论研究、"磁窗天线"原理性试验装置研制、"磁窗天线"增强等离子体透波特性粉末激波管原理性验证试验等。"磁窗天线"具有不改变飞行器的外形、不改变靶场现有设备的通信制式、无冷却系统要求等优点,并克服了其它产生"磁窗"方式(如,采用超导产生"磁窗"技术)带来的磁体重量过大等难以实现技术工程化的问题。
中文关键词: 磁窗天线;等离子体鞘套;黑障;;
英文摘要: The communication blackout, which is caused by plasma sheath around a hypersonic vehicle flying in atmosphere, is a serious problem to aerospace vehicles. A magneto window will be formed when a static magnetic field is applied to plasma sheath, with which the attenuation of right circular polarized wave in the sheath will be reduced. The best way to build a magnetic field is by superconductive devices. However, there are some problems such as heavy weight and complex structure when applying superconductive devices to generate a magneto window. In this project, an integrated concept, magneto window antenna, was proposed. A circularly polarized microwave antenna will be designed according to this concept.The contents of this project include theoretic analysis,the design of magneto window antenna, experimental research and so on.
英文关键词: magnetro window antenna;plasma sheath;blackout;;