Abstract
Reusable thermal protection systems of reentry vehicles are adopted for temperatures ranging between 1000 and 2000 °C, when gas velocity and density are relatively low; they exploit the low thermal conductivity of their constituent materials. This paper presents a new class of light structural thermal protection systems comprised of a load bearing structure made of a macroporous reticulated SiSiC, filled with compacted short alumina/mullite fibers. Their manufacturing process is very simple and does not require special devices or ambient conditions. The produced hetoroporous heterogeneous ceramics showed high radiations shielding capabilities up to 2000 °C in vacuum. Even after repeated exposures at higher temperatures, a significant degradation of the SiSiC scaffold was not observed.
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Acknowledgment
The research leading to these results has received funding from the European Union Seventh Framework Program (FP7/2007–2013) under grant agreement no 262749 (Project SMARTEES).
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Ortona, A., Badini, C., Liedtke, V. et al. Hetoroporous heterogeneous ceramics for reusable thermal protection systems. Journal of Materials Research 28, 2273–2280 (2013). https://doi.org/10.1557/jmr.2013.70
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DOI: https://doi.org/10.1557/jmr.2013.70