1952*  German helicopter built by Walter Schlieske, called the "Libelle III". It had an empty weight of 23kg and a gross weight of 110kg. Rotor diameter 7,40m; length 4,50m; cruise speed 160-240 km/h and max. speed 300 km/h.
*Note: the "FLUR-Flugroller and Hubschrauber Entwicklung" ("FLUR flying scooter and helicopter development") company founded by W. Schlieske to develop his aircraft turned out to be a fraud and the flight dates were faked. Schlieske went to jail for this in 1957.   |
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