Abstract
Recent developments in materials for spacecraft thermal protection have made it possible to construct high performance, low cost aeroshells for missions requiring atmospheric entry. The new material developments center around the light-weight ceramic ablator family invented and developed at NASA Ames. This presentation will discuss three members of the family, SIRCA, PICA and SPLIT, which have found application on a number of NASA missions. With these advanced materials, a simple fabrication approach is enabled using organic composite construction techniques to produce high performance, low cost, reliable aeroshells which can protect vehicles over a wide range of entry conditions — ranging from tens to hundreds to thousands of W/cm2̂ of heating.
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