Dabeen JEONG, Shinkyu JEONG, Jongho JUNG
DOI Number: N/A
Conference number: HiSST-2024-273
This study investigates the optimization of a reusable unmanned space vehicle with various objective
functions: weight and heat flux minimization. Multi-Objective Genetic Algorithm (MOGA) was used to
optimize various objective functions. To compute the objective functions, aerodynamic and thermal
analysis was performed during the re-entry process. The modified Newtonian flow and the approximate
convective-heating equation were used for aerothermodynamic analysis. After the thermal analysis was
performed, the wall temperature was calculated for designing the Thermal Protection System (TPS)
layout. Optimization was computed with KSP-1 provided by the Korea Aerospace Research Institute
(KARI) was used as a baseline configuration. According to the comparison geometry-based TPS layout
and wall temperature-based TPS layout, the wall temperature-based TPS layout was generally lower in
weight and protected high-temperature areas that the geometry-based TPS layout did not capture.
