During the 1970s and 1980s, NASA research led to the development of vertical extensions that can be attached to wing tips in order to reduce aerodynamic drag without having to increase wing span. Winglets also help reduce carbon dioxide emissions as the result of the reduced fuel use, and also help reduce aircraft noise on takeoffs and landings.
During the 1970s and 1980s, NASA research led to the development of vertical extensions that can be attached to wing tips in order to reduce aerodynamic drag without having to increase wing span. Winglets also help reduce carbon dioxide emissions as the result of the reduced fuel use, and also help reduce aircraft noise on takeoffs and landings. (Southwest Airlines Company)