Nando Timmer is lecturer and research engineer at the department of Aerodynamics, Wind Energy and Flight Mechanics & Propulsion at the Faculty of Aerospace Engineering of TUDelft. His research focusses on the aerodynamics of wind turbine rotor blades, and more in particular on the design and wind tunnel testing of wind turbine dedicated airfoils. At present about 50% of the large wind turbines worldwide incorporate one or more of these DU airfoils or derivatives in their blades. He teaches aerodynamics and wind energy and is the coordinator for the 2nd year project System Design. He is also a member of the organizing committee for the Design Synthesis Exercise, the faculty’s bachelor final project. Recently he was appointed scientific director of the wind tunnel laboratories of the Aerospace faculty.