大気圏再突入時における宇宙往還機の空力加熱高精度推算について

抄録

Precise estimation of aerodynamic heat around the body of space vehicles while reentry is becoming important for the development of a re-usable space transportation system or a reentry capsule. One of the most important factors is the surface catalysis on the TPS material. In this paper, a new model describing heterogeneous catalysis on the surface of SiO₂-based materials in nonequilibrium flow is summarized. CFD results with this model are compared with some real flight trajectories of reentry vehicles such as OREX. Some examples of the comparison between the experimental results obtained in the ground testing facilities such as an arc-heated wind tunnel and CFD results to validate the essential characteristics indicated in the catalytic model are also shown.