Advanced aerodynamic design for commercial aircraft

The concepts and the research on two kinds of advanced aerodynamic technology are briefly reviewed. One is laminar flow active control, which focuses on increasing the laminar flow region through decreasing flow instability and delaying the transition. A hybrid laminar flow control method has now been developed and probably will be used in future design. The other is a new type of aerodynamic shape, which can greatly increase the performance of commercial transport aircraft. Three new types of configuration——the blended wing body, strut-braced wing,and body boundary layer ingestion will be briefly described.