habibi

Hi all, I'm working on a project where I want to evaluate the performance of different microstructures of a material as candidates for an atmospheric entry heat shield. I have thermal conductivities for these materials, as well as atmospheric conditions and a required temperature gradient across the heat shield, so I'd like to make some rough calculations for the thickness required of each material. From there I can make comments on the size and weight required. I'm not sure how to calculate the heat flux through the materials in order to determine their thickness, does anyone know how I might go about that? I know that I'm not taking a lot into account (like ablation, convection of pyrolysis gases, radiation, etc) but I just want some rough numbers on how these microstructures affect the TPS requirements for a heat shield. Thanks!