Flettner Collection

Flettner rotor diagram on a boat. A Flettner rotor is a smooth cylinder with disc end plates which is spun along its long axis and, as air passes at right angles across it

Baden-Baden, Anton Flettner's rotor-driven steamship

Rotor ship, designed by Flettner, German engineer, in a chapter entitled Some Strange Ships, by G G Jackson. The tall cylinders are turned in the direction of the wind

A Flettner FL282 Kolibri helicopter in US markings. This helicopter had two intermeshing rotors and was intended to operate from cruisers for spotting work in anti-submarine patrols

Flettner Fl-282 -first flown in October 1941, only 24 of these helicopters were built, as their main use would have been naval -itself a low priority other than U-Boats

Sailing without sails by G. H. Davis
Sailing without sails: wind action on rotating cylinder masts. Partly driven and partly drawn forward by the action of wind on rapidly revolving cylinders

Flettner FL282 Kolibri helicopter in flight. This helicopter had two intermeshing rotors and was intended to operate from cruisers for spotting work in anti-submarine patrols

A line-up of Flettner FL282 Kolibri helicopters. This helicopter had two intermeshing rotors and was intended to operate from cruisers for spotting work in anti-submarine patrols

The Rotor Ship Buckau, 1924
Photograph of the experimental Rotor ship Buckau, on sea trials, 1924. Anton Flettner equipped the 680 ton schooner, Buckau, with two rotating cylindrical towers to test his Flettner rudder

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