高超声速钝锥模型及其尾迹红外辐射实验研究

Experimental research on infrared radiation from hypersonic blunt cone and wake

介绍了利用InSb红外辐射计在弹道靶上测量底部直径为10mm、半锥角和头部半径分别为9°、2．2mm（模型A），8°、0．6mm（模型B）的两种非烧蚀钝锥模型及其尾迹的红外辐射。模型速度大于6km／s，飞行环境压力约4．8kPa，红外辐射测量波段为1．3μm、3．5μm。结果表明：非烧蚀钝锥模型头身部红外辐射远大于尾迹红外辐射，在相同飞行速度和环境压力条件下，模型A产生的红外辐射比模型B产生的红外辐射强。

The experiment of measuring infrared radiation of non-ablation blunt cone and wake using InSb infrared radiometers on ballistic range is described in this paper. The IR radiation distributions in 1 - 3μm and 3 - 5μm bands for model A with 10mm base diameter, 9° half-cone angle, 2.2ram head radius and model B with 10ram base diameter, 8° half-cone angle, 0.6ram head radius are obtained. The model velocity is over 6km/s, and environment pressure is about 4.8kPa. The results show that the IR radiation of model is stronger than the IR radiation of wake, and the IR radiation of model A is stronger than model B at the same test conditions.