우주발사체 고공환경모사 기법 연구

Experimental studies on the high-altitude simulation considering the real gas effects are essential to build independent technologies for launching space launch vehicles and accomplishing missions. Analytical and experimental studies on high-altitude simulations have been conducted by a number of organizations. As the contents of the research, however, are highly related to national security, its results are mostly classified. In order to overcome this, there is a need to independently build a database for high-altitude simulations and to secure the fundamentals of the high-altitude launch vehicle technology. In this study, the flow condition calculation method for the Korean Space Launch Vehicle (KSLV-II) has been developed and verified, which is critical for the experimental study of high-altitude simulation of space launch vehicles. Flow validation was carried out by measuring stagnation pressure, heat flux, and shock stand-off distance of the formed flow. Errors within ±1% of all reproducibility measurement results of the three methods have been confirmed, which means that accurate flow has been formed.