Within the EU and North Rhine-Westphalia funded research project AVIGLE, the Institute of Flight System Dynamics develops a multi functional flight platform in a tiltwing configuration. The different mission requirements as well as the specific requirements due to the tiltwing configuration influence the design process. Within each specification step, the impact on horizontal and vertical flight, including transition states in between has to be considered. Beside numerical flow analysis, extensive wind tunnel tests were conducted to confirm the calculated coefficients and derivatives and to gain data needed to build a six degrees of freedom simulation for development of controlling strategies in transition. Particular emphasis was put on the influence of the propeller induced slipstream on the aerodynamic coefficients and the stability analysis during transition phases between horizontal and vertical flight.

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