High-lift design methodology for subsonic civil transport aircraft

This paper presents a high-lift system design methodology that can be incorporated during the early stages of aircraft development, and thus has the potential to provide a superior and more cost effective vehicle than one developed utilizing traditional linear design methods. The present methodology offers two different levels of fidelity, one applicable to the conceptual design stage and the other to the preliminary design stage. The underlying flow solver couples a three-dimensional nonlinear Weissinger method with two-dimensional viscous data to provide fast and accurate aerodynamic predictions for high-lift configurations. Several test cases that illustrate the capabilities of this hybrid flow solver are presented