Aim: XML based multidisciplinary tool integration in a conceptual aircraft design framework. Instead of a "One-tool" a "One-database" approach. Design Automation for fast realization of the concept. To support Conceptual to Preliminary Aircraft design. Conclusions: Multidisciplinary conceptual aircraft design analysis based on a central parametric XML database database. This database -containing all project related data- is intended to grow simultaneously with the refined specification of the airplane. The unified geometry makes meshing easier and serves for no aperture for high fidelity CFD.