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本文介绍了在弹道靶设备上对再入速度下模型的热辐射进行的实验研究工作。铝、高硅氧和聚碳酸酯三种材料的模型在速度为4.5～6.0(km/s),压力为600—8000Pa条件下做了实验,在258nm—1100nm光谱范围内完成了九个波段的辐射测量,给出了三种材料模型的辐射光谱分布曲线。结果表明辐射量除了受环境条件影响外,还强烈地依赖于模型材料;由烧蚀产物引起的辐射通量主要在可见光和近红外区(465nm以上)。估算了烧蚀产物引起的辐射加热率,对头部和近尾流辐射通量做了比较。
This paper introduces the experimental research on the thermal radiation of the model at the reentry speed on ballistic target equipment. The models of aluminum, silicon oxide and polycarbonate were tested under the conditions of velocity of 4.5-6.0 (km / s) and pressure of 600-8000Pa, and the nine bands in the spectral range of 258nm-1100nm Radiation measurements give the spectral distribution curves for the three material models. The results show that the radiation dose depends strongly on the model materials except for the environmental conditions. The radiative flux caused by the ablation products is mainly in the visible and near-infrared regions (above 465 nm). The rate of radiant heating due to ablation products was estimated and the radiant fluxes of the head and near wake were compared.