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Bristol Type 143

The Bristol Type 143 was a British twin-engine monoplane aircraft designed by Frank Barnwell of the Bristol Aeroplane Company.

Type 143
Role Light transport
Manufacturer Bristol Aeroplane Company
Designer Frank Barnwell
First flight 1936
Number built 1

Developed alongside the more famous Bristol Type 142, which was developed into the Blenheim light bomber, it used the same wing design and employed the same advanced (for the day) design features such as stressed skin, flaps, and retractable undercarriage. The engine it was designed to use never entered production and only a single prototype was manufactured,

Design and development edit

Like the better-known Type 142 the Type 143 arose from the unbuilt Bristol Type 135 proposal for a civil twin-engine light transport aircraft. This was a low-wing twin-engined monoplane, seating six people and a crew of two, first sketched out by Frank Barnwell, with the intention of using the smaller of the two engines then being developed by Roy Fedden, the Aquila I. Although the manufacture of a second Aquila was authorised, nothing was done about the construction of an actual airframe.[1] Meanwhile, in early 1934 Lord Rothermere announced his intention to have 'the fastest civil aircraft in Europe' built for him.[1] Barnwell proposed an aircraft based on the type 135 but using the more powerful Mercury engine in place of the Aquila, and this was accepted by Rothermere, the aircraft being ordered on 26 March 1934 and first flying on 12 April 1935.[2]

The Type 143 was very similar to the Type 135 design, although the cabin was enlarged to seat eight and some detail changes were made to optimise the use of common components with the Type 142: over 70% of components were shared.[3] The prototype 143 was accordingly built alongside the Type 142, receiving the civil registration G-ADEK on 22 March 1935 but had to wait until the end of the year before the engines had completed trials. It was first flown on 20 January 1936 without registration but bearing the mark R 14.[4] Further flying continued at Filton, mainly as a testbed for the Aquila. It was put into storage when Aquila development was abandoned in 1938 and subsequently scrapped.[5]

Specifications (Type 143) edit

 
Bristol 143 F 3-view drawing from NACA-SR-26

Data from Bristol Aircraft since 1910[6]

General characteristics

  • Crew: 2
  • Capacity: 8 passengers
  • Length: 43 ft 2 in (13.16 m)
  • Wingspan: 56 ft 4 in (17.17 m)
  • Height: 12 ft 3 in (3.73 m)
  • Wing area: 469 sq ft (43.6 m2)
  • Empty weight: 7,000 lb (3,175 kg)
  • Max takeoff weight: 11,000 lb (4,990 kg)
  • Powerplant: 2 × Bristol Aquila I 9-cylinder air-cooled sleeve-valve radial piston engine, 500 hp (370 kW) each
  • Propellers: 2-bladed variable-pitch propellers

Performance

  • Maximum speed: 250 mph (400 km/h, 220 kn)
  • Range: 1,250 mi (2,010 km, 1,090 nmi)

See also edit

Aircraft of comparable role, configuration, and era

References edit

Citations edit

  1. ^ a b Barnes 1964, p. 257.
  2. ^ Barnes 1964, pp. 257–258.
  3. ^ Barnes 1964, p. 258.
  4. ^ Barnes 1964, pp. 259–260.
  5. ^ Barnes 1964, pp. 260–261.
  6. ^ Barnes 1964, p.261.

Bibliography edit

  • Barnes, C.H. (1964). Bristol Aircraft Since 1910 (First ed.). London: Putnam.
  • Bowyer, C. (1984). Bristol Blenheim. Ian Allan Publishing. ISBN 0-7110-1351-9.
  • Warner, G. (2005). The Bristol Blenheim: A Complete History. Crécy Publishing. ISBN 0-85979-101-7.

External links edit

bristol, type, british, twin, engine, monoplane, aircraft, designed, frank, barnwell, bristol, aeroplane, company, type, 143role, light, transportmanufacturer, bristol, aeroplane, companydesigner, frank, barnwellfirst, flight, 1936number, built, 1developed, al. The Bristol Type 143 was a British twin engine monoplane aircraft designed by Frank Barnwell of the Bristol Aeroplane Company Type 143Role Light transportManufacturer Bristol Aeroplane CompanyDesigner Frank BarnwellFirst flight 1936Number built 1Developed alongside the more famous Bristol Type 142 which was developed into the Blenheim light bomber it used the same wing design and employed the same advanced for the day design features such as stressed skin flaps and retractable undercarriage The engine it was designed to use never entered production and only a single prototype was manufactured Contents 1 Design and development 2 Specifications Type 143 3 See also 4 References 4 1 Citations 4 2 Bibliography 5 External linksDesign and development editLike the better known Type 142 the Type 143 arose from the unbuilt Bristol Type 135 proposal for a civil twin engine light transport aircraft This was a low wing twin engined monoplane seating six people and a crew of two first sketched out by Frank Barnwell with the intention of using the smaller of the two engines then being developed by Roy Fedden the Aquila I Although the manufacture of a second Aquila was authorised nothing was done about the construction of an actual airframe 1 Meanwhile in early 1934 Lord Rothermere announced his intention to have the fastest civil aircraft in Europe built for him 1 Barnwell proposed an aircraft based on the type 135 but using the more powerful Mercury engine in place of the Aquila and this was accepted by Rothermere the aircraft being ordered on 26 March 1934 and first flying on 12 April 1935 2 The Type 143 was very similar to the Type 135 design although the cabin was enlarged to seat eight and some detail changes were made to optimise the use of common components with the Type 142 over 70 of components were shared 3 The prototype 143 was accordingly built alongside the Type 142 receiving the civil registration G ADEK on 22 March 1935 but had to wait until the end of the year before the engines had completed trials It was first flown on 20 January 1936 without registration but bearing the mark R 14 4 Further flying continued at Filton mainly as a testbed for the Aquila It was put into storage when Aquila development was abandoned in 1938 and subsequently scrapped 5 Specifications Type 143 edit nbsp Bristol 143 F 3 view drawing from NACA SR 26Data from Bristol Aircraft since 1910 6 General characteristicsCrew 2 Capacity 8 passengers Length 43 ft 2 in 13 16 m Wingspan 56 ft 4 in 17 17 m Height 12 ft 3 in 3 73 m Wing area 469 sq ft 43 6 m2 Empty weight 7 000 lb 3 175 kg Max takeoff weight 11 000 lb 4 990 kg Powerplant 2 Bristol Aquila I 9 cylinder air cooled sleeve valve radial piston engine 500 hp 370 kW each Propellers 2 bladed variable pitch propellersPerformance Maximum speed 250 mph 400 km h 220 kn Range 1 250 mi 2 010 km 1 090 nmi See also editAircraft of comparable role configuration and era Airspeed Envoy Lockheed Model 10 ElectraReferences edit nbsp Wikimedia Commons has media related to Bristol 143 Citations edit a b Barnes 1964 p 257 Barnes 1964 pp 257 258 Barnes 1964 p 258 Barnes 1964 pp 259 260 Barnes 1964 pp 260 261 Barnes 1964 p 261 Bibliography edit Barnes C H 1964 Bristol Aircraft Since 1910 First ed London Putnam Bowyer C 1984 Bristol Blenheim Ian Allan Publishing ISBN 0 7110 1351 9 Warner G 2005 The Bristol Blenheim A Complete History Crecy Publishing ISBN 0 85979 101 7 External links editType 143 Type 142 Retrieved from https en wikipedia org w index php title Bristol Type 143 amp oldid 1065831560, wikipedia, wiki, book, books, library,

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