Flavien DENIS, Hermann ALBERS, Myriam BASTIDE, Christian REY, Serge GAISSER, Daniel ROTHER, Thierry STEIBLIN

DOI Number: 10.60853/mv5h-k371

Conference number: HiSST-2024-00144

The aim of this study is to experimentally measure the ablation of aluminium spheres in hypersonic free flight. The experiment is carried out in the ISL hyperballistic tunnel. The 8 mm aluminium spheres are accelerated up to 4000 m · s−1 and performed a decelerated free flight in a tunnel of 21 m. Several measurements, such as velocity measurements, flash radiography and high speed imaging are performed during the free flight to detect and to measure the ablation. In addition, some models are recovered for post-flight analysis. The ablation profiles are extracted using an image post-processing algorithm. The results highlight the contribution of the oxidation to the ablation phenomenon and provide experimental results for the validation of the numerical tools.

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In Categories: 1.Events, High-Speed Aerodynamics and Aerothermodynamics, HiSST 2024
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