 Experiments showed the need for only a small number of design changes, mainly involving the wing profile and positioning.To improve high-alpha performance, the leading edge of the wing was drooped, especially on outer sections, a dog-tooth was introduced at about half-span to control spanwise flow, and the entire wing given a slight negative camber which helped control trim drag and pitch-up.The area rule principle, made public in 1952, was also applied to the design.