Back Flettner "Gigant"
1933

Flettner Gigant

Anton Flettner's start in the aeronautical industry goes back as far as 1905 when, on finishing his studies, he was employed by Zeppelin on development work into remote-control systems for lighter-than-air craft.

During World War I he perfected his servo-control, the Flettner tab, still in use today on almost every aircraft in the world.

During the 1920s he invented the Flettner rotor, a sort of rotating cylinder producing an aerodynamic force sufficient to move a vessel. The rotors were actually fitted to two ships, the Buchau and the Baden-Baden, on which they were mounted vertically on the top deck.

Flettner first entered the rotary wing field in 1930 by designing a torqueless drive helicopter with which some tethered tests were carried out in 1933, but a gust of wind destroyed this prototype. It had a two-bladed rotor 30 metres in diameter, each blade of which was fitted with a small Anzani 30hp engine. In operation it was quite like Isacco's aircraft.

P.Lambermont "Helicopters and Autogyros of the World", 1958

Comments 
shoes, e-mail, 13.06.2011

on which they were mounted vertically on the top deck.

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