7Moses Paul L, Rausch Vincent L, Nguyen Luat T, et al. NASA hypersonic flight demonstrators overview, status and future plans. Acta Astronautica, 2004, 55(3/4): 619- 630.
10Soyris P, Foucault A, Parenteau JM, et al. C/SiC based rigid external thermal protection system for future reusable launch vehicles: generic shingle, Pre-X/FLPP anticipated development test studies. In: 13th International Space Planes and Hypersonic Systems and Technologies Confer- ence, 16-20 May,2005. AIAA 2009-7219.