title: Farman BN.4
text: # Farman BN.4
  
  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.
  
  ## Development
  
  Often known by the military designation BN.4 (Bombardement 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. It was a four-seat long range night bomber. The company exhibited the BN.4 at the 1921 Paris Salon de l'Aeronautique. The BN.4 was a four-engined three-bay biplane powered by four Lorraine piston engines mounted in tandem pairs on the lower wing. It had a biplane tail unit and a tailskid landing gear with twin-wheel main units. It had provision for a gunner in the nose section and amidships with additional machine guns that fired downwards and to the rear.
  
  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. 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. A civil version was looked at but it would have been too large and the BN.4 was not ordered into production.
  
  ## Specifications
  
  Data from
  
  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 $m^2$ (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
  