Jackson R. Stalder
An analysis has been made of the heat-absorption characteristics of several materials which might be considered for construction of ballistic missile heat sinks. The numerical analysis, which took into account the variation of material properties with temperature, was made for conditions corresponding to a typical ballistic-missile trajectory. Four materials, each characteristic of a group of materials, were considered - copper, Inconel-X, graphite, and berryllium. It was found that significant weight saving could be achieved by the use of graphite or berrylium in place of copper. Inconel-X was found to be unsatisfactory because of its low thermal conductivity. It is indicated that large errors in computed temperature distributions in materials can arise if the Fourier heat-conduction equation is approximated in the conventional fashion.
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