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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2018, Vol. 39 ›› Issue (5): 421748-421748.doi: 10.7527/S1000-6893.2018.21748

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Wind tunnel test methods for hot-wall microwave-transparency characteristics of antenna window materials

WANG Guolin1, ZHANG Xiaochen2, MA Haojun1, LIU Liping1, LUO Jie1, ZHANG Jun1   

  1. 1. Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China;
    2. Beijing Institute of Nearspace Vehicles System Engineering, Beijing 100076, China
  • Received:2017-09-18 Revised:2018-02-01 Online:2018-05-15 Published:2018-02-01
  • Supported by:
    National Natural Science Foundation of China (11472002)

Abstract: Tests of the thermal response and hot-wall microwave-transparency characteristics of plasma covered antenna window materials for hypersonic vehicles are the basis for analyzing material characteristics and studying transmission characteristics of electromagnetic waves in plasma and antenna windows. Attenuation of the electromagnetic wave with certain frequency in plasma and antenna window is obtained with vector network analysis and standard gain horns. To obtain the thermal response and hot-wall microwave-transparency characteristics of the antenna window, the temperature distribution and ablation characteristics of the antenna window under certain heat flux are obtained, the effect of the antenna window at high temperature and without plasma on the electromagnetic wave is tested, and the differences between high temperature and normal temperature antenna windows are analyzed. The test methods proposed provides a basis for research on hot-wall microwave-transparency characteristics of antenna windows and coupling effect of antenna window and plasma on transmission characteristics of the electromagnetic wave in the plasma wind tunnel.

Key words: antenna window, plasma, thermal response, hot-wall microwave-transparency characteristic, electron density

CLC Number: