Ablation Thermal Protection Systems

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Science  10 Nov 1967:
Vol. 158, Issue 3802, pp. 740-744
DOI: 10.1126/science.158.3802.740


The performance of ablation thermal protection systems is intimately related to the mass transfer, heat transfer, and chemical reactions which occur within the gas boundary layer. Production of a liquid layer and phase change or chemical reaction heat sinks greatly improve materials performance. Materials are available which achieve many goals for thermal protection. However, advanced materials which are now being developed provide hope of further reductions in the weight of heat-shielding structures.