Patent drawing of flight simulator by Baier (Germany - 1931)

Source: wikicommons:
http://commons.wikimedia.org/wiki/Image:Baier_pt1931.jpg

Tags: media, clip_art, externalsource, public_domain, image, svg, plane, plan, schematic, flight, flight_simulator, bi_plane, aircraft, plane, plan, schematic, flight, flight_simulator, bi_plane, aircraft