Infrared Thermography in Expansion Tubes for Martian Entry Flows
作者： Ranjini Ramesh , Richard Morgan , Ranjith Ravichandran , David Mee
DOI: 10.2514/6.2020-2415
关键词: Heat flux 、 Heat transfer 、 Thermography 、 Radiation 、 Materials science 、 Infrared 、 Mars Exploration Program 、 Martian 、 Shock (mechanics) 、 Optics
摘要: two dimensional heat transfer measurements at planetary re-entry conditons. Experiments were performed in the X2 Expansion Tube The University of Queensland a simulated Martian (CO2/N2) test gas on wedge model. An infrared camera and sensor were used in these experiments. Infrared filtering to remove radiation outside 3.5 -4 µm waveband was found be sufficient eliminate direct from shock layer. infrared camera was for which surface temperature maps were deduced. obtain time resolved variation surface temperatures flux can deduced. model pre-heated to different temperatures assess signal background ratios thermography. These results indicate thermography obtaining two dimensional blunt bodies speeds ∼ 5.6 km/s Mars gas.
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