Spallation on Carbon Ablators

Article

Grigat, Felix, Loehle, Stefan, Zander, Fabian and Fasoulas, Stefanos. 2022. "Spallation on Carbon Ablators." AIAA Journal: devoted to aerospace research and development. 60 (7), pp. 3936- 3949. https://doi.org/10.2514/1.J061276
Article Title

Spallation on Carbon Ablators

ERA Journal ID3575
Article CategoryArticle
AuthorsGrigat, Felix (Author), Loehle, Stefan (Author), Zander, Fabian (Author) and Fasoulas, Stefanos (Author)
Journal TitleAIAA Journal: devoted to aerospace research and development
Journal Citation60 (7), pp. 3936- 3949
Number of Pages14
Year2022
PublisherAmerican Institute of Aeronautics and Astronautics
Place of PublicationUnited States
ISSN0001-1452
1533-385X
Digital Object Identifier (DOI)https://doi.org/10.2514/1.J061276
Web Address (URL)https://arc.aiaa.org/doi/abs/10.2514/1.J061276
Abstract

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.

KeywordsStagnation-point ablation; Heating environment; Mechanical erosion; Charring ablation; Spalled particles; Flat disks; Protection; Pyrolysis; Oxidation; Permeability
ANZSRC Field of Research 2020400199. Aerospace engineering not elsewhere classified
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Byline AffiliationsUniversity of Stuttgart, Germany
University of Southern Queensland
German Aerospace Centre, Germany
Institution of OriginUniversity of Southern Queensland
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