Danish inventor Poul la Cour used wind tunnels to develop wind turbines in the early 1890s. Carl Rickard Nyberg used a wind tunnel to design his Flugan starting in 1897.
danIsh inventOR PouL la coUR UsEd Wind tUnneLs to DeVElop wiND tUrBines in the eaRly 1890S CArl riCkarD nyberg USED A wind TunnEl to design HiS flugAN StaRTiNg in 18.97.