Spline Techniques for Generating Airplane Wings with Practical Applications

In the present paper we describe the CAGD part of an effort that aimed at the unification of the whole geometric preprocessing that preceded the wind tunnel readings with a realistic air-plane wing model in a recent research project. This preprocessing includes the automated generation of the CAD models which were used for the manufacturing of the multi-parted wing-fuselage configuration and the generation of the numerical grids for the corresponding numerical simulations. Due to the constraints of the project it was decided to employ only exact, watertight, untrimmed BSpline representations. From this process we describe the methods and algorithms for automated generation of multi-parted airplane wings from one or more cross-sections given by point clouds and the top view of the wing. A rounded wing tip an several types of winglets can be added. Furthermore we can compute and add fuselages to achieve realistic results near the root of the airfoil wing.