Engineering:Martinsyde F.1

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Martinsyde F.1
Martinsyde F1.jpg
Role Biplane fighter aircraft
National origin United Kingdom
Manufacturer Martinsyde
First flight 1917
Primary user Royal Flying Corps
Number built 2

The Martinsyde F.1 was a British two-seat biplane fighter designed and built by Martinsyde Limited, only two prototypes were built.[1]

Design and development

The F.1 was designed as a fighter for the Royal Flying Corps and it was a large tractor biplane powered by a 250 hp (186 kW) Rolls-Royce Mk III piston engine.[1] It had two tandem open cockpits with unusually the observer forward and the pilot behind.[1] A rectangular aperture was cut-out of the upper wing above the observer's cockpit which would allow the observer to use a gun.[2] It was tested at Martlesham Heath in July 1917, where it demonstrated good handling but was criticised for the awkward crew arrangement.[2] It was not ordered into production and only one prototype (of two ordered) was built. It continued in use at Farnborough until after the end of the war.[1][3][4]

Specifications

Data from War Planes of the First World War: Volume 1 Fighters[3]

General characteristics

  • Crew: 2
  • Length: 29 ft 1 in (8.86 m)
  • Upper wingspan: 44 ft 6 in (13.56 m)
  • Lower wingspan: 44 ft 2 in (13.46 m)
  • Height: 8 ft 6 in (2.59 m)
  • Wing area: 467 sq ft (43.4 m2)
  • Empty weight: 2,198 lb (997 kg)
  • Gross weight: 3,260 lb (1,479 kg)
  • Powerplant: 1 × Rolls-Royce Mk III water-cooled V-12 engine, 250 hp (190 kW)

Performance

  • Maximum speed: 109.5 mph (176.2 km/h, 95.2 kn) at 6,500 ft (1,980 m)
  • Endurance: 3 hr 45 min
  • Service ceiling: 16,500 ft (5,000 m)
  • Time to altitude: 13 min 40 s to 10,000 ft (3,050 m)

Armament

  • Guns: Possibly 1× Lewis gun operated by observer

References

Notes

  1. 1.0 1.1 1.2 1.3 Orbis 1985, p. 2296
  2. 2.0 2.1 Bruce 1965, pp. 154, 156.
  3. 3.0 3.1 Bruce 1965, p. 156.
  4. Robertson 1987, p. 29

Bibliography

  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 
  • Bruce, J.M. (1965). War Planes of the First World War: Volume 1 Fighters. London: Macdonald. 
  • Robertson, Bruce (1987). British Military Aircraft Serials 1878-1987. Letchworth, England: Midland Counties Publications. ISBN 0-904597-61-X.