空气动力学学报2017，Vol.35Issue(1)：141-145,5.DOI:10.7638/kqdlxxb-2015.0146
电弧风洞热/透波联合试验技术研究及应用
Studies and applications of thermal/wave-transmission test technique in arc-heated wind tunnel
张松贺 1杨远剑 1王茂刚 1马平1
作者信息
- 1. 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
- 折叠
摘要
Abstract
A newly developed test technique in arc-heated wind tunnel was introduced.It is important to know the performance of ablation and wave transmission of antenna window,since it may cause interruptions to communications during hypersonic vehicle reentry.To conduct ablation and wave transmission coupled test in arc-heated wind tunnel is the best qualified method for the study of wave transmission through antenna window on the ground.The interference of copper ions on test results was suppressed by improving the structure of the arc heater,using a semi-elliptical nozzle to enhance energy efficiency,and changing the way of intake;the reflection of microwaves within the test section was solved by designing directional antenna and laying microwave absorbing material on the key parts;the transmitting and receiving antennas were placed inside the test section to ensure the antennas having the same frequency vibration to solve the antenna jitter signal fluctuations caused by wind tunnel start-up; the antenna thermal protection for the antenna window experiencing a long time aerodynamic heating was performed by water-cooled cabinet designed.The experimental results show that the technique is effective, mature and feasible.This technique is successfully used to evaluate the microwave performance for the ablation of the antenna window test in the arc-heated wind tunnel.关键词
电弧风洞/天线窗/热/透波/半椭圆喷管/定向天线Key words
arc-heated wind tunnel/antenna window/thermal/wave transmission/semi-elliptical nozzle/directional antenna分类
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张松贺,杨远剑,王茂刚,马平..电弧风洞热/透波联合试验技术研究及应用[J].空气动力学学报,2017,35(1):141-145,5.
