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W.20
Role Submarine-launched reconnaissance flying boat
National origin Germany
Manufacturer Hansa-Brandenburg
Number built 3

The Hansa-Brandenburg W.20 was a German submarine-launched reconnaissance flying boat of the World War I era, designed and built by Hansa-Brandenburg.[1]

Design and development[edit | edit source]

Due to the need to be stored and launched from a submarine the W.20 was a small single-seat biplane flying boat that was designed to be assembled and dismantled quickly.[1] It had a slender hull on which was mounted a biplane wing and a conventional braced tailplane.[1] It had an Oberursel rotary engine mounted on struts between the wings driving a pusher propeller.[1] The pilot had an open cockpit just forward of the lower wing.[1] Because of the slender hull stabilising floats were fitted below and at the end of the lower wings.[1] The submarine intended to carry the W.20 was not built and only three W.20s were built.[1]

Specifications (3rd built)[edit | edit source]

Data from [1]Illustrated Encyclopedia of Aircraft

General characteristics

  • Crew: One
  • Length: 5.93 m (19 ft 5½ in)
  • Wingspan: 6.80 m (22 ft 3¾ in)
  • Wing area: 15.82 m2 (170.29 ft2)
  • Empty weight: 396 kg (873 lb)
  • Gross weight: 568 kg (1252 lb)
  • Powerplant: 1 × Oberursel U.0 7-cylinder rotary piston engine, 60 kW (80 hp)

Performance

  • Maximum speed: 117 km/h (73 mph)
  • Endurance: 1 hours  15 min

See also[edit | edit source]

References[edit | edit source]

Notes
  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Orbis 1985, pp. 2098-2099
Bibliography
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 
  • Treadwell, Terry C (1999). Strike From Beneath the Sea: A History of Aircraft-carrying Submarines. Stroud, UK: Tempus Publishing. ISBN 0-7524-1704-5. 

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