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Arado Ar 231

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Arado Ar 231

Ar 231
Arado Ar 231 Model front view shows the special wing construction
Role Submarine-borne reconnaissance floatplane
National origin Germany
Manufacturer Arado Flugzeugwerke
Number built 6

The Arado Ar 231 was a light-weight floatplane, developed during World War II in Germany as a scout plane for submarines by Arado. The need to be stored inside the submarine necessitated compromises in design that made this single-seat seaplane of little practical use.


  • Design and development 1
  • Operational history 2
  • Specifications (Ar 231 V1) 3
  • See also 4
  • References 5
  • External links 6

Design and development

Designed from the outset for use on U-boat "cruisers", like the Type XI B, the Ar 231 was a light parasol-wing aircraft. The aircraft was powered by a 119 kW (160 hp) Hirth HM 501 inline engine, weighed around 1,000 kg (2,200 lb), and had a 10 m (33 ft) wingspan. The design led to a simple and compact aircraft that could be fitted into a storage cylinder only 2 m (6.7 ft) in diameter. For ease of storage, the Ar 231's wings featured detachable sections that two operators could remove in less than six minutes. One unusual feature was an offset wing design, with the right wing root attaching to the wing's tilted center section (elevated above the fuselage, as on all parasol-wing designs) and lower than the left wing root, to allow the wings to be quickly folded up.

Arado Ar 231 Model side view

Operational history

Testing soon revealed the Ar 231s to be fragile, underpowered, and difficult to fly even during calm weather, and as a result, development ended in favour of the Focke Achgelis Fa 330 gyroglider. Some of the testing was done on the auxiliary cruiser Stier, two of the six prototypes being taken on one voyage.

Specifications (Ar 231 V1)

Data from German Aircraft of the Second World War [1]

General characteristics
  • Crew: One
  • Length: 7.81 m (25 ft 7½ in)
  • Wingspan: 10.18 m (33 ft 4½ in)
  • Height: 3.12 m (10 ft 2¾ in)
  • Wing area: 15.2 m² (164 ft²)
  • Empty weight: 833 kg (1,837 lb)
  • Loaded weight: 1,050 kg (2,315 lb)
  • Powerplant: 1 × Hirth HM 501 six-cylinder inverted inline engine, 119 kW (160 hp)


See also

Aircraft of comparable role, configuration and era
Related lists


  1. ^ Smith, J.R. and Kay, Antony L. German Aircraft of the Second World War. London: Putnam, 1972. ISBN 0-85177-836-4.

External links

  • Arado Ar 231
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