A optimization design method was studied which coupled airfoil with aspirated scheme in the condition of low Reynolds number based on class shape transformation(CST)method.Research results show that:the coupling optimized design can make the total pressure loss reduce by 65%,the static pressure ratio increase by 0.02,and aerodynamic performance gets an obvious enhancement the in the condition of high altitude of 20 km and low Reynolds number.Due to the penalty functions introduced,optimized airfoil aerodyna...