Spallation on Carbon Ablators

A comprehensive analysis of publicly available research statements on spallation processes of ablative heat shield materials is presented. Based on the published data and numerical simulations thereof, a definition of spallation with respect to its fundamental parameters is given. Results from ablat...

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Bibliographic Details
Published in:AIAA journal 2022-07, Vol.60 (7), p.3936-3949
Main Authors: Grigat, Felix, Loehle, Stefan, Zander, Fabian, Fasoulas, Stefanos
Format: Article
Language:English
Subjects:
Ablation
Carbon
Decomposition
Experiments
Gases
Graphite
Mathematical models
Numerical models
Oxidation
Pyrolysis
Shear forces
Spallation
Thermal stress
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Summary:A comprehensive analysis of publicly available research statements on spallation processes of ablative heat shield materials is presented. Based on the published data and numerical simulations thereof, a definition of spallation with respect to its fundamental parameters is given. Results from ablation and spallation experiments as well as analytical and numerical models are compared and discussed with respect to the conditions and mechanisms that lead to spallation. The driving mechanisms are oxidation, pyrolysis gas outflow, shear forces, and thermal stress. Based on the summary of the current state-of-knowledge of spallation, propositions are made for future experimental and numerical investigations.
ISSN:0001-1452
1533-385X
DOI:10.2514/1.J061276