模型表面温度对光电特性影响的实验研究

对在JF-10氢氧爆轰驱动高焓激波风洞中开展烧蚀材料模型表面温度对光电特性影响的实验方法进行了探索。风洞实验状态的驻室总压约为20MPa，驻室总温约为6000K，自由流速度约为4km／s。实验以锑化铟多单元红外成像系统与电离列阵测试装置为测量手段，用以烧蚀材料为头部的球头钝锥体模型，实验测量激波层中红外辐射的横向剖面分布和壁面附近电离密度的剖面分布，并在烧蚀材料加热和不加热两种情况下进行了对比实验。实验结果表明：烧蚀材料的加热加强了模型头部激波层中的红外辐射，同时也增大了模型表面的电子密度。

Experimental research on the influence of temperature of model surface on infrared radiation and ionization

This paper reports experimental research on the influence of temperature of model surface on infrared radiation and electron density in reentry flows. The experiments were conducted in the oxygen-hydrogen denotation driven shock tunnel JF-10. The total pressure was about 20MPa, the total temperature was about 6000K and the velocity of free flow was about 4km/s. The experimental equipments are infrared radiation measuring system and ionization measuring system, and the blunt cone model＇ s head is made of ablative material. In this research, both the infrared radiation in the shock layer and the electron density on the model surface were measured. In addition, the experiment data in heated condition and no-heated condition were compared. The experiment results show that the infrared radiation in the shock layer of the model＇ s head has been increased with the ablative material being heated, and the electron density on the model surface has been increased as well.