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Hansa-Brandenburg W.20

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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

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Due to the need to be stored and launched from a submarine aircraft carrier, 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 was powered by a seven-cylinder, 80 PS Oberursel U.0 rotary engine — basically a German-made near-clone of the Gnome Lambda pre-war French rotary — 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)

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Data from [1]

General characteristics

  • Crew: One
  • Length: 5.93 m (19 ft 5.5 in)
  • Wingspan: 6.80 m (22 ft 3.75 in)
  • Wing area: 15.82 m2 (170.29 sq ft)
  • Empty weight: 396 kg (873 lb)
  • Gross weight: 568 kg (1,252 lb)
  • Powerplant: 1 × Oberursel U.0 7-cylinder rotary piston engine , 60 kW (80 hp)

Performance

  • Maximum speed: 117 km/h (73 mph, 63 kn)
  • Endurance: 1 hours 15 minutes

See also

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Related development

Related lists

References

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Notes

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  1. ^ a b c d e f g h Illustrated Encyclopedia of Aircraft Orbis 1985, pp. 2098–2099

Bibliography

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  • Clouts, Walter; Gregoire, Daniel; Layman, R. D. & Scurrell, Charles E. (1991). "Question 42/89". Warship International. XXVIII (1): 84–86. ISSN 0043-0374.
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985). Orbis Publishing.
  • Owers, Colin A. (2015). Hansa-Brandenburg Aircraft of WWI: Volume 2–Biplane Seaplanes. Great War Aviation Centennial Series. Vol. 18. n.p.: Aeronaut Books. ISBN 978-1-935881-32-2.
  • Passingham, Malcolm (February 2000). "Les hydravions embarqués sur sous-marins" [Submarine-carried Seaplanes]. Avions: Toute l'aéronautique et son histoire (in French) (83): 7–17. ISSN 1243-8650.
  • Treadwell, Terry C. (1999). Strike From Beneath the Sea: A History of Aircraft-carrying Submarines. Stroud, UK: Tempus Publishing. ISBN 0-7524-1704-5.