Speaker
Description
The Aerothermodynamics Design for Demise (ATD3) Test Case Collaboration Campaign focuses on deepening our understanding and modelling capability of the spacecraft behaviour during the destructive re-entry into the Earth’s atmosphere. This collaboration identifies relevant test cases, and rebuilds them numerically by using different tools. The overall objective is to answer the question: what are the aerothermodynamics conditions which spacecraft are subjected to during their descent and re-entry and what is the best approach to simulate them?
This campaign is promoted and jointly managed by the European Space Agency (ESA) and the French Space Agency (CNES). It involves cooperation, collaboration and data exchange between researchers, experts from industry, academia, research institutions, space agencies and developers of destructive re-entry analysis tools.
This presentation summarizes and discusses the results of the code-to-experiment test case selected at the previous collaboration campaign, aimed to improve the understanding of the dispersion process of fragments undergoing mutual interactions. It consists in the numerical rebuilding of a free-flight test performed in the VKI Longshot hypersonic tunnel, intended to analyze the Interference of a Free-flying Ring with a Stationary Cylinder [1].
[1] Daniel G Kovacs, Guillaume Grossir, Grigorios Dimitriadis, and Olivier Chazot. Space debris interaction across a two-dimensional oblique shock wave. Experiments in Fluids, 64(8):146, 2023.
