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From Wikipedia, the free encyclopedia

Role Fighter
National origin France
Manufacturer Farman
Designer Henry Farman
First flight Summer 1918
Number built 1

The Farman F.31 was a French fighter prototype of the 1910s, the second foray into fighter design by Farman, a firm more usually associated with bombers. The project was short-lived, lasting only 3 months.


The F.31 was a two-seat fighter, designed around the Liberty 12 engine. It was exceptionally angular, and equi-span with the fuselage mounted between its two bays.

Operational history

The sole prototype was completed and first flown in summer 1918. Testing was still ongoing in November 1918, when the Armistice put an end to the project and no further development continued.


Data from The Complete Book of Fighters[1]

General characteristics

  • Crew: 2
  • Length: 7.35 m (24 ft 1 in)
  • Wingspan: 11.76 m (38 ft 7 in)
  • Height: 2.58 m (8 ft 6 in)
  • Empty weight: 869 kg (1,916 lb)
  • Gross weight: 1,469 kg (3,239 lb)
  • Powerplant: 1 × Liberty L-12 V-12 water-cooled pisaton engine, 300 kW (400 hp)
  • Propellers: 2-bladed fixedf-pitch propeller


  • Maximum speed: 215 km/h (134 mph, 116 kn) at 2,000 m (6,600 ft)
  • Time to altitude: 2,000 m (6,600 ft) in 5.85 minutes


  • Guns: 2 × fixed forward-firing 7.7 mm (0.303 in) Vickers gun
1 × rear-mounted swivelling 7.7 mm (0.303 in) Lewis gun


  1. ^ Green, William; Gordon Swanborough. The Complete Book of Fighters. Godalming, UK: Salamander Books. pp. 201–202.

Further reading

  • "Fighter A to Z: FBA Avion Canon". Air International. 16 No 1: 33. January 1979.
This page was last edited on 17 April 2020, at 19:13
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