Our key competences are the development of numerical simulation and calculation methods and the structural design of wind turbine rotor blades. The strong cooperation with the Fraunhofer Institute for Wind Energy Systems IWES opens the possibility to access their unique test infrastructure from the coupon level up to full blade testing. Based on the experimental expertise at Fraunhofer IWES, we are able to validate and further refine our simulation methods in order to optimise future generation wind turbines.