The project is an exjobb by Nikolaj Borregard Lauridsen. The Saab J35 Draken will be used as a baseline for an investigation with CFD as well as an experimental investigation in the KTH wind tunnel. The geometry of an existing wind tunnel model will be measured to creat a CAD mode and a CFD model will be created based on it. This model will be computed with CFD and compared to available wind tunnel data and date generated from the wind tunnel measurements. In a second part of the project modifications/extensions to the Draken model will be propopsed and investigated with CFD.