Abstract: This paper is concerned with a method of generating the optimized waverider. Both the wave drag and the friction drag increase as the Mach number becomes higher for hypersonic flow; moreover, a technique difficult will appear which is called L/D barrier. The waverider aerodynamic configuration may be a way to overcome this barrier. A family of optimized hypersonic waverider is generated and studied and the detailed viscous effects are included within the optimization progress itself. The viscous optimized process is completed with maximum lift over drag ratio as optimized objections at the conditions of Ma_∞=4.0-20.0, attitudes of H=24.0-52.0km, and cone angle differed from 5° to 10°. Shapes and aerodynamics of waveriders with Maximum L/D at different Mach numbers are obtained.

Key words: waverider, optimized design, aerodynamics, lift-drag ratio