Seong-Hyeon PARK, Yosheph YANG, Ikhyun KIM

DOI Number: 10.60853/a0ag-rm10

Conference number: HiSST-2024-00216

Reentry survivability is important in the minimization of the risk of space object to human populations. An accurate re-entry survivability needs to consider the importance of surface roughness. A preliminary study of re-entry survivability with the surface roughness consideration is carried out based on its effect on the surface heat transfer due to the catalytic properties. Two different levels of surface roughness for aluminum oxide materials are considered in the present study. The catalytic properties of these materials are measured from the heat transfer measurement at the shock tube end-wall combined with the catalytic heat transfer theory. From the experimental measurement, it is found that the catalytic property increases for the roughened material. With the catalytic efficiency values obtained from the experimental condition, the re-entry survivability analysis shows that a material with a high level of surface roughness exhibits a low survivability rate.

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In Categories: 1.Events, HiSST 2024, Materials and Structures
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