Model E4/20 monoplane (large aircraft ‘Staaken’) in Wind Tunnel

Model E4/20 monoplane (large aircraft ‘Staaken’) in Wind Tunnel
Model E4/20 monoplane (large aircraft ‘Staaken’) in Wind Tunnel
Model E4/20 monoplane (large aircraft ‘Staaken’) in Wind Tunnel 1 at the Aerodynamic Research Institute of the Kaiser Wilhelm Society (AVA) in Göttingen, 1919.