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Sopwith Snark

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Sopwith Snark

Snark
Role Fighter aircraft
National origin United Kingdom
Manufacturer Sopwith Aviation Company
First flight 1919
Number built 3

The Sopwith Snark was a British prototype fighter aircraft designed and built towards the end of the First World War to replace the RAF's Sopwith Snipes. A single engined triplane, the Snark did not fly until after the end of the war, only three being built.

Development and design

In spring 1918, although the Sopwith Snipe had not yet entered service with the Royal Air Force, the British Air Ministry drew up a specification (RAF Type I) for its replacement. The specification asked for a fighter capable of operations at high altitude and powered by the ABC Dragonfly engine, which was an air-cooled radial engine which had been ordered in large numbers based on promises of high performance and ease of production.

Sopwith produced two designs to meet this requirement, a biplane, the Snapper, and a triplane, the Snark. Sopwith received orders for three prototypes each of the Snapper and Snark,[1] as well as orders for 300 of a Dragonfly powered version of the Snipe, the Sopwith Dragon. The Snark had a wooden monocoque fuselage like that of the Sopwith Snail lightweight fighter, and had equal span single-bay wings with ailerons on each wing. The wings had unequal spacing and stagger, with the gap between the mid and upper wings less than that between the lower and mid wings to minimise the height of the aircraft.[2]

The Snark was fitted with what was, for the time, a very heavy armament for a single-seat fighter. In addition to the normal two synchronised Vickers guns inside the fuselage, it had four Lewis guns mounted under the lower wings, firing outside the propeller disc. These guns were inaccessible to the pilot, and so could not be reloaded or unjammed in flight.[3][a]

The first prototype was complete by October 1918, but flight-ready engines were not available until March 1919, and the Snark did not make its first flight until July 1919.[4] While it demonstrated reasonable performance and good maneuverability,[3] (although not as good as the earlier Sopwith Triplane[5]), by this time, it had been realised that the Dragonfly engine had serious problems, being prone to overheating and severe vibration, and plans for production of the Snark had been abandoned.[6] The three Snarks continued in use for trials purposes until 1921.[7]

Specifications

Data from War Planes of the First World War: Fighters Volume Three [5]

General characteristics
  • Crew: 1
  • Length: 20 ft 6 in (6.25 m)
  • Wingspan: 26 ft 6 in (8.08 m)
  • Height: 10 ft 10 in (3.30 m)
  • Wing area: 322 sq ft (29.9 m²)
  • Loaded weight: 2,283 lb (1,038 kg)
  • Powerplant: 1 × ABC Dragonfly IA 9-cylinder air-cooled radial engine, 360 hp [4] (269 kW)

Performance

  • Maximum speed: 130 mph (113 knots, 209 km/h) at 3,000 ft (915 m)
Armament

See also

Aircraft of comparable role, configuration and era

References

Notes

Bibliography

  • Bruce, J.M. British Aeroplanes 1914-18. London:Putnam, 1957.
  • Bruce, J.M. War Planes of the First World War: Fighters Volume Three. London:Macdonald, 1969. ISBN 0-356-01490-8.
  • Mason, Francis K. The British Fighter since 1912. Annapolis, USA:Naval Institute Press, 1992. ISBN 1-55750-082-7.
  • Robertson, Bruce. Sopwith-The Man and his Aircraft. Letchworth, UK:Air Review, 1970. ISBN 0-900435-15-1.
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