The following paper describes a multidisciplinary approach to design a wing with almost optimal aerodynamic efficiency during the entire cruise flight. Therefore a tight collaboration between structural mechanics and aerodynamics is necessary. Aerodynamic aspects are described here to illustrate the interdisciplinary nature of the design process, but they are not explained very deeply. The paper focuses on structural aspects, e.g. description of the tasks of the wings structural members, their placement within the wing and the modeling of the actual wing structure.