Cierva C.12

C.12

Manufacturer: Cierva
Designed by: Juan de la Cierva
First flight: 1929
Number built: 1

The Cierva C.12 was an experimental autogyro built by Cierva in England in 1929, in association with Avro. Like most other Cierva designs, it was based on an existing aircraft fuselage - in this case, an Avro Avian. The most significant thing about this aircraft is that after initial tests, the Avian's second cockpit was removed, and the aircraft's undercarriage was replaced by the same floats used to equip standard Avian seaplanes. In this configuration, the C.12 (now dubbed the Hydrogiro) flew from Southampton Water in April 1930, becoming the first rotary-wing aircraft to take off from water.

Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 254.
World Aircraft Information Files. London: Bright Star Publishing. pp. File 891 Sheet 29.

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Source: WikiPedia