“…There are many kinds of research programs about TSTO reusable space launch system, during which reusable boost vehicle (RBV) has become one of the most noteworthy and paramount research points (Crocker and Andrewa, 2004;Pamadi et al, 2004Pamadi et al, , 2005. RBV is evolved from traditional expendable boost, and it can be powered by air-breathing ramjet, scramjet engine, rocket engine and so on (Minami et al, 2005).…”