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. DOI: 10.7638/kqdlxxb-2015.0146
引用本文: 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. DOI: 10.7638/kqdlxxb-2015.0146
Zhang Songhe, Yang Yuanjian, Wang Maogang, Ma Ping. Studies and applications of thermal/wave-transmission test technique in arc-heated wind tunnel[J]. ACTA AERODYNAMICA SINICA, 2017, 35(1): 141-145. DOI: 10.7638/kqdlxxb-2015.0146
Citation: Zhang Songhe, Yang Yuanjian, Wang Maogang, Ma Ping. Studies and applications of thermal/wave-transmission test technique in arc-heated wind tunnel[J]. ACTA AERODYNAMICA SINICA, 2017, 35(1): 141-145. 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

  • 摘要: 介绍了在电弧风洞上发展的一种新型试验技术。针对某型飞行器,了解其在飞行条件下天线窗烧蚀透波特性对于了解及掌握“黑障”问题及通信信号特点至关重要。在电弧风洞内开展热/透波联合试验考核是地面试验考核的最佳选择,但存在若干技术难点。为此在电弧风洞开展热/透波联合试验技术研究,使用半椭圆喷管,改进进气方式,提升能量利用率;改进电弧加热器结构解决了铜离子对测试的干扰;设计定向天线,在关键部位布设吸波材料解决了试验段内微波反射问题;将收发天线均置于试验段内部,保证天线同频振动,解决了风洞启动时天线抖动导致的信号波动;设计水冷箱体解决了天线窗口长时间气动加热下天线的热防护问题。经试验验证,研究内容是有效的、成熟的、可行的。目前该技术已成功用于指导在电弧风洞上开展的数项试验。

     

    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.

     

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