NICO BRAAS COLLECTION
No. 5040. Flettner Fl 265 ("GI+SB")
08/31/2007. The Fl 265 was the first helicopter with inter-meshing
contra-rotating synchronized rotors, the patent of Anton Flettner. In
June 1941 the Fl 265 was also made the world's first transition from
powered flight to autorotative flight and back to powered flight.
Created February 15, 2006