Far-Field Drag-Prediction Technique Applied to Wing Design for Civil Aircraft

One of the emphases of this paper was the enhancement of drag prediction as well as the decomposition of drag into its physical components. The drag-predictio n capa bility of the improv ed WBVS co de for transonicow a bout wing\body combinationwas veriedby two approaches, codeto codeand code to experiment. The goodagreements indicate that the wing body viscous has the capability to assess the aerodynamic performance in the supercritical wing design for civil transport aircraft. Another task of the present study was to redesign a supercritica lwing for a new regional jet aircraft by employing the improved code as an analysis tool for wing\body combina tion. To a cco mplish this, a geometry-modifying techniquewas employed to gradually improvethe upper- and lower-surface shapes of wing sections