"Самолет 2020" достался ЦАГИ
Тема: "Самолет 2020" достался ЦАГИ
Originally designated simply as TBW, NASA recently added “T” for transonic to emphasize the unusual high-speed capability of the concept, and to differentiate it from the similar looking but radically different slow-speed, strut-configured general aviation aircraft.
Compared with a conventional cantilevered wing, a truss-braced wing can theoretically be lighter because the load is partially shared with the strut, relieving some bending moment. The wing structure can therefore be lighter, enabling a larger wing for the same weight. The larger the wing is, the bigger the potential lift-to-drag ratio and the lower the induced drag. Struts also allow thinner wing profiles, significantly reducing wave drag and making it easier to fly at transonic speeds. The thinner profile is also more suitable for natural laminar flow, reducing the zero-lift drag and further enhancing efficiency.
Truss-Braced Wings May Find Place On Transonic Aircraft
NASA ponders follow-on tests for truss-based transonic concept, after high-speed work
Mar 25, 2016 Guy Norris | Aviation Week & Space Technology