(Bristol) F.2 Fighter @·AIRCRAFTUBE

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    Bristol F.2B Fighter
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Bristol F.2 Fighter

The Bristol Fighter was a British two-seat biplane fighter and reconnaissance aircraft of World War I flown by the Royal Flying Corps. It is often simply called the Bristol Fighter or popularly the "Brisfit" or "Biff". Despite being a two-seater, the F.2B proved an agile aircraft that was able to hold its own against single-seat scouts. Having overcome a disastrous start to its career, the F.2B's solid design ensured that it remained in military service into the 1930s and surplus aircraft were popular in civil aviation.

The Bristol fighter's basic design stemmed from design studies by Frank Barnwell in March 1916 for an aircraft in the same class as the R.E.8 and the F.K.8 - the Type 9 R.2A with the 160 hp Beardmore engine and the 9 R.2B, powered by the 150 hp Hispano Suiza. Before either type was actually built, the design was altered to take the new 190 hp (142 kW) Rolls-Royce Falcon I inline engine. This, the Type 12 F.2A was a more compact design, intended from the outset as a two-seater fighter. Unlike the earlier design studies it was actually built, and first flew on 9 September 1916. The F.2A was armed in what had by then become the standard manner for a British two-seater, with one synchronised forward-firing Vickers machine gun and one .303 in (7.7 mm) Lewis gun mounted on a Scarff ring in the observer's rear cockpit.

Only 52 F.2As were produced before production switched to what became the definitive Bristol Fighter, the Bristol Type 14 F.2B which had first flown on 25 October 1916. The first 150 or so were powered by the Falcon I or Falcon II engine but the remainder were equipped with the 275 hp (205 kW) Falcon III engine and could reach a maximum speed of 123 mph (or 200 km/h). The F.2B was over 10 mph (16 km/h) faster than the F.2A and was 3 minutes faster to reach 10,000 ft (3,000 m). A second Lewis gun was often added to the rear cockpit.

Rolls Royce aero engines of all types were in chronic short supply in this period, and the Falcon was no exception. Plans to make the Bristol Fighter the standard British two-seater, replacing the R.E.8 and F.K.8 , stalled against this barrier; there simply would not have been enough Falcons available. Efforts to find an available powerplant that was sufficiently powerful and reliable, ultimately failed.

The Type 15 was fitted with a 200 hp (or 149 kW) Sunbeam Arab piston engine. This motor suffered from chronic vibration and the "Arab Bristol" was never a viable combination, in spite of prolonged development. A few Arab engined Bristols were at the front very late in the war - but most British reconnaissance squadrons had to soldier on with the R.E.8 and F.K.8 until the end of hostilities.

The Type 16 was fitted with a 200 hp (149-kW) Hispano-Suiza piston engine. This worked better than the Arab - but the Hispano-Suiza availabily was no better than for the Falcon, and the motors that were available were required for the S.E.5a and Sopwith Dolphin. The 300 hp version of the Hispano-Suiza, suggested for the Type 17 was not available in numbers before the end of the war.

Other engines tried or suggested for the F.2B were the 200 hp RAF 4d, the 180 hp Wolseley Viper and the 230 hp Armstrong Siddeley Puma.

The Type 22 F.2C was a proposed version adapted for a radial or rotary engine - either a 200 hp Salmson radial - a 300 hp (224-kW) ABC Dragonfly radial (Type 22A) - or a 230 hp (172-kW) Bentley B.R.2 rotary (Type 22B).

Efforts to start production of the Bristol Fighter in the United States foundered against the mistaken decision to power the type with the Liberty 12 engine - a totally unsuitable engine for the Bristol, as it was far too heavy and bulky. Efforts to change the powerplant of American Bristol Fighters to the more suitable Liberty 8 or the 300 hp Hispano-Suiza (Dayton-Wright XB-1A) came up against political as well as technical problems, and no American variant of the type ever entered service.

Post war developments of the F.2B included the Type 14 F.2B Mk.II, a two-seat army co-operation biplane, fitted with desert equipment and a tropical cooling system, which first flew in December 1919. 435 were built. The Type 96 Fighter Mk.III and Type 96A Fighter Mk.VI were structurally strengthened aircraft, of which 50 were built in 1926-1927.

Operational history

When initially deployed, aircrews were instructed to maintain formation and use the crossfire of the observers' guns to meet any threat from enemy fighters. This was standard procedure at the time, and worked well for such types as the F.E.2b. For the Bristol, these tactics were flawed and did not withstand the first contact with the enemy. The F.2A arrived on the Western Front in April 1917 as the British launched the Battle of Arras. The very first F.2A patrol of six aircraft from No. 48 Squadron RFC, led by Victoria Cross winner William Leefe Robinson, ran into five Albatros D.IIIs from Jasta 11 led by Manfred von Richthofen. Four out of six of the F.2As were shot down, including Robinson who was captured, and a fifth was badly damaged.

More flexible, aggressive tactics soon proved that the new Bristol was by no means as ineffective in air-to-air combat as its first encounter with the enemy seemed to indicate. In fact it was eventually realised that the type was fast and manoeuvrable enough to be flown in combat more or less like a single seat fighter; the pilot's fixed forward firing gun serving as the principle weapon, with the observer's flexible gun serving mainly as a bonus "sting in the tail". Flown in this manner the Bristol Fighter was a formidable opponent for any German single seater.

In September and October of 1917, orders for 1,600 F.2Bs were placed and by the end of the First World War, the Royal Air Force had 1,583 F.2Bs in operation. A total of 5,329 aircraft were eventually built, mostly by Bristol but also by the likes of Standard Motors, Armstrong Whitworth and even the Cunard Steamship Company. After the war, F.2Bs continued to operate in army cooperation and light bombing roles throughout the British Empire, in particular the Middle East, India and China. The F.2B also served with the New Zealand Permanent Air Force and RAAF as well as with the air forces of Belgium, Canada, Ireland, Greece, Mexico, Norway, Peru, Spain and Sweden. It was not until 1932 that the F.2B was finally withdrawn from RAF service; its last unit being No. 20 Squadron RAF stationed in India. The type lasted a further three years in New Zealand.

Surplus F.2Bs were modified for civilian use. The Bristol Tourer was a F.2B fitted with an Armstrong Siddeley Puma engine in place of the Falcon and with the cockpits enclosed by canopies. The Tourer had a maximum speed of 128 mph (206 km/h).

The Bristol M.R.1 is often described as an "all-metal version of the F.2b". In fact it was a totally new design - although it shared the characteristic of having the fuselage positioned between the upper and lower wing. Two prototypes were built, the first flying on 23 October, 1917, but the M.R.1 never entered mass production.

Operators

  • Afghan Air Force operated three aircraft from 1919 and retired by 1929.
  • Australian Flying Corps.
  • Belgian Air Force.
  • Royal Canadian Air Force.
  • Irish Air Corps.
  • Hellenic Air Force.
  • Mexico.
  • New Zealand Permanent Air Force.
  • Norway.
  • Peru.
  • Polish Air Force operated Bristol F.2 Fighter post-war.
  • Spanish Air Force.
  • Sweden.
  • United Kingdom: Royal Flying Corps and Royal Air Force.

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Bristol F.2 of Wikipedia ( authors )

Specifications (F.2B)

  • Crew : 2 : pilot & observer/gunner.
  • Length : 25 ft 10 in (or 7.87 m).
  • Height : 9 ft 9 in (or 2.97 m).
  • Wingspan : 39 ft 3 in (or 11.96 m).
  • Wing area : 405 ft² (or 37.62 m²).
  • Empty weight : 2,145 lb (or 975 kg).
  • Max takeoff weight : 3,243 lb (or 1,474 kg).
  • Max speed : 123 mph (or 107 knots, 198 km/h) at 5,000 ft (or 1,500 m).
  • Service ceiling : 18,000 ft (or 5,500 m).
  • Rate of climb : 889 ft/min (or 4.5 m/s).
  • Powerplant : A Rolls-Royce Falcon III liquid-cooled V12 engine.
  • Power : 275 hp (or 205 kW).
  • Armament : One.303 in (7.7 mm) forward-firing Vickers machine gun in the upper fuselage plus one or two.303 in Lewis guns in the observer's cockpit. 240 lb of bombs.

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This text is available under the Creative Commons Attribution-ShareAlike License
Source : Article Bristol F.2 of Wikipedia ( authors )
Bristol F.2 Fighter : Your comments on this subject
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