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From Wikipedia, the free encyclopedia

Farman BN.4
Farman BN.4 L'Aéronautique May,1922.jpg
Role Long-range night bomber
National origin France
Manufacturer Farman
First flight March 1922[1]
Number built 1

The Farman BN.4, a.k.a. Super Goliath, was a very large 1920s French biplane designed by Farman as a long-range night bomber.[2]

Development

Often known by the military designation BN.4 (Bombardment de Nuit Strategique, 4 places), some sources refer to it as the Super Goliath though that name was also applied to the Farman F.141.[1] It was a four-seat long range night bomber.[2] The company exhibited the BN.4 at the 1921 Paris Salon de l'Aeronautique.[2] The BN.4 was a four-engined three-bay biplane powered by four Lorraine piston engines mounted in tandem pairs on the lower wing.[2] It had a biplane tail unit and a tailskid landing gear with twin-wheel main units.[2] It had provision for a gunner in the nose section and adminships with additional machine guns that fired downwards and to the rear.[2]

By the time the aircraft was test flown a pair of twin nose wheels had been added to stop the aircraft nosing over on soft grass airfields.[2] After the aircraft had performed a number of test flights the military had lost interest in spending on new equipment in the post-war era.[2] A civil version was looked at but it would have been too large and the BN.4 was not ordered into production.[2]

Specifications

Farman BN.4 3-view drawing from Les Ailes December 8,1921
Farman BN.4 3-view drawing from Les Ailes December 8,1921

Data from [2]

General characteristics

  • Length: 21.4 m (70 ft 3 in)
  • Wingspan: 32.9 m (107 ft 11 in)
  • Height: 7.35 m (24 ft 1 in)
  • Wing area: 300 m2 (3,200 sq ft)
  • Empty weight: 5,500 kg (12,125 lb)
  • Gross weight: 10,500 kg (23,149 lb)
  • Powerplant: 4 × Lorraine 12D V-12 water-cooled piston engines, 276 kW (370 hp) each

Performance

  • Maximum speed: 160 km/h (99 mph; 86 kn)
  • Service ceiling: 4,500 m (14,800 ft)

Armament

  • Guns: 5 × 7.7 mm (0.303 in) machine guns
  • Bombs: up to 2,500 kg (5,500 lb) of bombs

References

Notes
  1. ^ a b Liron 1984 pp.224-5
  2. ^ a b c d e f g h i j Orbis 1985, pp. 1774-1775
Bibliography
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
  • Liron, J.L. (1984). Les avions Farman. Paris: Éditions Larivère.
This page was last edited on 1 August 2018, at 02:55
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