Abstract: The aerodynamics of typical aircraft configurations under Ma =6.0 (Re=1×107) cruise condition was evaluated numerically using inhouse software SPACER. The configurations include quasiwaverider (like X-51A), blended wing body (ISR), traditional liftingbody (X-33) and axisymmetric cone (Fasthawk). A flat liftingbody model was also studied in this paper. It is found that, at the current conditions, the quasiwaverider has good lift-to-drag ratio and relatively small drag force, which is the most potential hypersonic configuration among studied; the blendedwingbody and liftingbody require modifications to improve the performance, such as to flat the shape of the liftingbody; the axisymmetric cone is also a candidate for hypersonic cruise configuration due to the small drag.