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Company Profile

Bristol Aeroplane Company

The Bristol Aeroplane Company, originally the British and Colonial Aeroplane Company, was both one of the first and one of the most important British aviation companies, designing and manufacturing both airframes and aircraft engines. Notable aircraft produced by the company include the 'Boxkite', the Bristol Fighter, the Bulldog, the Blenheim, the Beaufighter, and the Britannia, and much of the preliminary work which led to Concorde was carried out by the company. In 1956 its major operations were split into Bristol Aircraft and Bristol Aero Engines.

History
Foundation The British and Colonial Aeroplane Company, Ltd was founded in February 1910 by Sir George White, chairman of the Bristol Tramways and Carriage Company, along with his son Stanley and his brother Samuel, to commercially exploit the fast-growing aviation sector. Sir George met with the American aviation pioneer Wilbur Wright in France in 1909 by chance, during which he became aware of aviation's business potential. Unlike many aviation companies of the era, which were started by enthusiasts with little financial backing, British and Colonial was well funded from its outset. The first batch equipped the two training schools, as well as serving as demonstration machines; the aircraft, which gained the nickname of the Boxkite, went on to become a commercial success, a total of 76 being constructed. Many served in the company's flying schools and examples were sold to the War Office as well as a number of foreign governments. Official War Office policy was to purchase only aircraft designed by the Royal Aircraft Establishment (RAE), and Bristol had already built a number of their B.E.2 two-seater reconnaissance aircraft. However, pressure from the pilots of the RFC and Royal Naval Air Service (RNAS) led to orders being placed for a new aircraft manufactured by Bristol, known as the Scout. Barnwell was succeeded as Bristol's Chief Designer by Leslie Frise. By the time war broke out in 1939, the Bristol works at Filton were the largest single aircraft manufacturing unit in the world, with a floor area of nearly 25 hectares (2,691,000 square feet). Second World War During the Second World War, Bristol's most important aircraft was the Beaufighter heavy two-seat multirole aircraft, a long-range fighter, night fighter, ground attack aircraft and torpedo bomber. In 1960, the founder's grandson, Sir George S.M. White, (3rd Baronet), was instrumental in preventing the car division being lost during the wider company's merger with BAC. Pre-fabricated buildings, marine craft and plastic and composite materials were also amongst the company's early post-war activities; these side-ventures were independently sold off. Bristol was involved in the post-war renaissance of British civilian aircraft, which was largely inspired by the Brabazon Committee report of 1943–5. Bristol was also involved in helicopter development, with the Belvedere and Sycamore going into quantity production. Another post-war activity was missile development, culminating in the production of the Bloodhound anti-aircraft missile. Upon introduction, the Bloodhound was the RAF's only long range transportable surface-to-air missile. None of these designs were built. Merger into BAC In 1959, Bristol was forced by Government policy to merge its aircraft interests with English Electric, Hunting Aircraft, and Vickers-Armstrongs to form the British Aircraft Corporation (BAC). Bristol formed a holding company which held a 20 per cent share of BAC, while English Electric and Vickers held 40 per cent each. In 1966, the Bristol holding company which held 20 per cent of BAC and 50 per cent of Bristol Siddeley engines was acquired by Rolls-Royce. Bristol also had the following holdings and subsidiary companies at this time:- Bristol Aerojet (50 per cent) – Bristol Aeroplane Co Australia – Bristol DE Mexico SA (78 per cent) – Motores Bristol De Cuba SA – Bristol Aeroplane Co of Canada – Bristol Aero Industries Ltd – Bristol Aeroplane Co USA – Spartan Air Services Ltd (46.5 per cent) – Bristol Aeroplane Co New Zealand – Bristol Aircraft Services Ltd – Bristol Aeroplane Plastics Ltd – SECA (30 per cent) – Short Bros & Harland (15.25 per cent) – SVENSK-ENGELSK Aero Service AB – TABSA (25 per cent) – Westland Aircraft Ltd (10 per cent). The Bristol Aeroplane Company of Canada The Canadian Bristol group of companies was the largest of the overseas subsidiaries. The group undertook aircraft handling and servicing at Dorval Airport, Montreal. Vancouver Airport was the base for Bristol Aero Engines (Western), Ltd., one of the Canadian company's four operating subsidiaries. Work at Vancouver included the overhaul of Pratt and Whitney and Wright engines for the R.C.A.F. and commercial operators. Bristol Aircraft (Western), Ltd (Stevenson Field, Winnipeg) was formerly MacDonald Brothers Aircraft, and was the largest of the subsidiaries and the group's only airframe plant. Bristol de Mexico, S.A. de CV. (Central Airport, Mexico City), overhauled piston engines for South American operators. Bristol de Mexico S.A. obtained a license to manufacture Alfred Herbert Ltd machine tools in 1963 and commenced assembling their centre lathes in 1963. They also commenced building their own design of small engine lathes for the Mexican Government to be installed in training schools throughout Mexico. Malcolm Roebuck was hired from Alfred Herbert Ltd along with William Walford Webb Woodward to supervise this project. Nationalisation In 1977, BAC was nationalised, along with Scottish Aviation and Hawker Siddeley, to form British Aerospace (BAe), which later became part of the now-privatised BAE Systems. The Canadian unit was acquired by Rolls-Royce Holdings and sold in 1997 to current owner Magellan Aerospace. ==Archives==
Archives
A small number of records from the early history of this company are held within the papers of Sir George White at Bristol Archives (Ref. 35810/GW/T) (online catalogue). Other records at Bristol Record Office include the papers of Lionel Harris, an engineer at the Bristol Aeroplane Company in the 1940s (Ref. 42794) (online catalogue) == Bristol Engine Company ==
Bristol Engine Company
The Bristol Engine Company was originally a separate entity, Cosmos Engineering, formed from the pre-First World War automobile company Brazil-Straker. In 1917, Cosmos was asked to investigate air-cooled radial engines and, under Roy Fedden, produced what became the Cosmos Mercury, a 14-cylinder two-row (helical) radial, which they launched in 1918. This engine saw little use but the simpler nine-cylinder version known as the Bristol Jupiter was clearly a winning design. With the post-war rapid contraction of military orders, Cosmos Engineering went bankrupt and the Air Ministry let it be known that it would be a good idea if the Bristol Aeroplane Company purchased it. The Jupiter competed with the Armstrong Siddeley Jaguar through the 1920s but Bristol put more effort into their design and, by 1929, the Jupiter was clearly superior. In the 1930s, and led by Roy Fedden, the company developed the new Bristol Perseus line of radials based on the sleeve valve principle, which developed into some of the most powerful piston engines in the world and continued to be sold into the 1960s. In 1956, the division was renamed Bristol Aero Engines and then merged with Armstrong Siddeley in 1958 to form Bristol Siddeley as a counterpart of the airframe-producing company mergers that formed BAC. Bristol retained a 50% share of the new company, with Hawker Siddeley group holding the other 50%. In 1966, Bristol Siddeley was purchased by Rolls-Royce, leaving the latter as the only major aero-engine company in Britain. From 1967, Bristol Siddeley's operations became the "Bristol Engine Division" and the "Small Engine Division" of Rolls-Royce, identified separately from Rolls-Royce's existing "Aero Engine Division". A number of Bristol Siddeley engines continued to be developed under Rolls-Royce including the Olympus turbojet – including the joint development Bristol started with Snecma for Concorde – and the Pegasus. The astronomical names favoured by Bristol indicated their heritage in a Rolls-Royce lineup named after British rivers. == Helicopter Division ==
Helicopter Division
The Bristol Aeroplane Company's Helicopter Division had its roots in 1944, when the helicopter designer Raoul Hafner, released from the Airborne Forces Experimental Establishment (AFEE), came to Bristol along with some members of his team. Under Hafner's direction, the division produced two successful designs that were sold in quantity. The first, designated the Type 171, had a shaky start after the wooden rotor blades of the second prototype failed on its first flight in 1949. After the Type 171, the Bristol Helicopter Division started work on a tandem rotor civil helicopter. The result was the 13-seat Type 173, which made its first flight in Filton in 1952. Five examples were built for evaluation purposes. Although no airlines ordered the Type 173, it led to military designs, of which the Type 192 went into service with the RAF as the Belvedere. First flying in 1958, 26 were built in total. Pursuing the idea of a civil tandem rotor helicopter, Hafner and his team developed a much larger design, the Type 194. This was in an advanced state of design when the Bristol Helicopter Division was merged, as a result of government influence, with the helicopter interests of other British aircraft manufacturers (Westland, Fairey and Saunders-Roe) to form Westland Helicopters in 1960. When the competing Westland Westminster was cancelled, the management of the combined company allowed development of the Type 194 to continue, but it too failed to find a market. The Helicopter Division started out at the main Bristol Aeroplane Company site in Filton, but from 1955 it was moved to the Oldmixon factory in Weston-Super-Mare, which had built Blenheims during the War. The factory is now the site of The Helicopter Museum. ==Products==
Products
Bristol did not systematically assign project type numbers until 1923, starting with the Type 90 Berkeley. In that year, they also retrospectively assigned type numbers in chronological order to all projects, built or not, from August 1914 onwards. Thus the Scouts A and B did not get a type number but the Scout C did and was the Type 1. The final Bristol project, numbered Type 225, was an unbuilt 1962 STOL transport. Of these 225 Types, 117 were built. This list does not include the unbuilt "paper aeroplanes"; it does include the pre-August 1914 aircraft. Aircraft twin-rotor helicopter, designed as a general-purpose land-based helicopter for the Royal Air Force. Twenty-six were built. Pre-World War IBristol BoxkiteBristol GliderBristol Racing BiplaneBristol Biplane Type 'T'Bristol MonoplaneBristol Prier monoplane - monoplanes designed by Pierre Prier • Bristol-Burney seaplanes - hydroplanes built to ideas by Dennistoun BurneyBristol Coanda Monoplanes -series of monoplane trainers designed by Henri Coanda from 1912 • Bristol Gordon England biplanes - series of biplane designed by Eric Gordon England from 1912 • Bristol B.R.7Bristol Hydro no.120Bristol G.B.75 - derivative of TB.8 for Romania • Bristol T.B.8 - derivative of Bristol Coanda Monoplane as biplane • Bristol P.B.8Bristol S.S.A. - armoured biplane scout for France, first flight 1914, one built World War IBristol Types 1–5 Scout A-DBristol Type 6 T.T.A.Bristol Type 7 F.3ABristol Type 8 S.2ABristol Types 10, 11, 20, and 77 M.1 Monoplane ScoutBristol Types 12, 14–17, and 22 F.2 FighterBristol Type 13 M.R.1Bristol Type 18 Scout EBristol Type 21 Scout F Inter-warBristol Type 23 BadgerBristol Types 24 Braemar and 25 Braemar II - triplane heavy bomber, 2 built • Bristol Type 26 Pullman - passender derivative of Braemar, 1 built • Bristol Types 27–29, 47, and 48 TourerBristol Types 30 and 46 BabeBristol Type 31 Grampus - unbuilt passenger aircraft • Bristol Type 32 Bullet - biplane racer, one built • Bristol Type 36 Seely - short takeoff and slow landing speed competition entrant • Bristol Type 37 Tramp - steam powered passenger derivative of Pullman, 2 built but not flown • Bristol Types 52 and 53 Bullfinch - convertible monoplane/biplane. prototypes only • Bristol Type 62 and 75 Ten-Seater and Type 79 BrandonBristol Type 72 RacerBristol Type 76 Jupiter Fighter - conversion of F.2 fighter to use Jupiter engine • Bristol Type 73 Taxiplane and Type 83/183 Primary TrainerBristol Type 84 Bloodhound - two-seat reconnaissance/fighter, 4 prototypes built • Bristol Type 90 BerkeleyBristol Type 91 BrownieBristol Type 92 'Laboratory' biplane • Bristol Types 93 Boarhound and 93A BeaverBristol Type 95 BagshotBristol Type 99 BadmintonBristol Type 101Bristol Type 105 BulldogBristol Type 107 BullpupBristol Type 109Bristol Type 110ABristol Type 118Bristol Type 120Bristol Type 123Bristol Type 130 Bombay - troop transport-medium bomber for use in Middle East and India • Bristol Type 133Bristol Type 138 - high-altitude monoplane research aircraft, 1 built • Bristol Type 142 'Britain First' - high speed passenger aircraft • Bristol Type 143 - parallel development of Type 142 with Aquila engine • Bristol Type 146Bristol Type 148Bristol Types 142M, 149, and 160 Blenheim World War IIBristol Fairchild Type 149 Bolingbroke - licence built Blenheim • Bristol Type 152 Beaufort - torpedo bomber • Bristol Type 156 Beaufighter - two engine fighter, and torpedo bomber • Bristol Type 159 - four engine heavy bomber, not built • Bristol Type 163 Buckingham - medium bomber • Bristol Type 164 BrigandBristol Type 166 Buckmaster Post-WWIIBristol Type 167 Brabazon - very large airliner, one built • Bristol Type 170 Freighter and WayfarerBristol SuperfreighterBristol Type 175 BritanniaBristol Type 188 high speed research aircraft HelicoptersBristol Type 171 SycamoreBristol Type 173 - twin rotor • Bristol Type 192 Belvedere - twin rotor Engines Bristol Engine designs include: Original series:CherubLuciferJupiterTitanMercuryNeptunePegasusPhoenixHydra Sleeve-valve engines: • PerseusAquilaTaurusHerculesCentaurus Turbines' • Theseus turboprop with heat exchanger • Proteus two-shaft turboprop • Olympus two-spool turbojet • Orpheus single-spool turbojet • Orion two-shaft turboprop • Pegasus two-spool vectored thrust turbofan • Cumulus APU for TSR-2 • Bristol Janus small free-power turbine engine for Bristol Type 173 helicopter Ramjet types:BRJ.801ThorOdin Missiles and rockets Bristol missile designs include: • Blue Envoy – project for a surface-to-air missile to meet Operational Requirement 1140; did not enter production • Bloodhound – surface-to-air missile • Fulmar – research rocket • Skuasounding rocket • Bristol 182 for the specification UB.109T, also known by MoS codename "Blue Rapier" Aircraft turrets Bristol began producing gun turrets with its Bristol Type 120 submission for an Air Ministry specification. The turret was a glazed cupola over a Scarff ring mounted Lewis light machine gun. Although it had to be rotated manually, it provided protection from the slipstream for the air gunner. and similar turrets were fitted to the Bristol Bombay. The first powered turrets by Bristol used hydraulics. In the B.II nose turret and B.III tail turret, a Vickers K machine gun mounted in a narrow horizontal strip was linked to gunsight. A ram rotated the strip and hence the gun horizontally, the glazing remaining stationary. The Bristol Type B.1 was more typical of later gun turret designs; the gun elevating through a slot in the glazing which rotated. The Type B.1 had two distinct features; the cupola could be lowered reducing drag and, though the single gun was centrally aligned, the gun cradle could be pivoted independently of the turret. The latter meant that the turret could be turned with sufficient offset that the gunner could fire along the side of the rudder and engage targets directly astern. The Type B.1 was fitted to Bristol Blenheim and Beaufort, and to the Avro Anson and Fairey Battle (with two Browning machine guns) when they were used as gunnery trainers. The Type B.IV was a lightweight (66 kg) turret designed specifically for the Beaufort mid-upper position with one (B.IV Mk 1) or two (B.IV Mk 1E) Vickers K machine guns Type X was a two 0.303-in Browning machine gun turret for the Blenheim Mk V.to replace the earlier design. The Type B.11 was a four gun turret developed in 1940. It was intended for a dorsal position on a Beaufighter but the design was not put into position though it was also considered for the Douglas Boston and de Havilland Mosquito too. The Type B.12 was another four gun dorsal turret, this time designed for the Bristol Buckingham. A particular requirement was that when not in use, crew could pass through the turret space to reach the bombardier position. It was successfully tested then redesigned to take two 0.5-inch Browning heavy machine guns as the Mark II variant. The Mark IV had two 0.303 guns. The B.12 "Mark III" was a test of using electrical rather than hydraulic system to operate the turret; the system proved effective was adopted on the later B.16, B.17, B.18 and B.30 turrets. A second turret was developed for the Buckingham to cover the rear below the aircraft. It was mounted at the back of the gondola type bomb aimer position under the fuselage and fitted with two Browning machine guns. The "B.14" designation was used for a four gun remote controlled nose mounting rather than a turret. Another design intended for the Buckingham it was included on the pre-production mockup but not developed further. == See also ==
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