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Airbus A300-B4 : ウィキペディア英語版
Airbus A300


The Airbus A300 is a short- to medium-range wide-body twin-engine jet airliner that was developed and manufactured by Airbus. Released in 1972 as the world's first twin-engined widebody, it was the first product of Airbus Industrie, a consortium of European aerospace manufacturers, now a subsidiary of Airbus Group. The A300 can typically seat 266 passengers in a two-class layout, with a maximum range of when fully loaded, depending on model.
Launch customer Air France introduced the type into service on 30 May 1974. Production of the A300 ceased in July 2007, along with its smaller A310 derivative. Freighter sales for which the A300 competed are to be fulfilled by a new A330-200F derivative.
The third production A300 is now a zero gravity plane and travels to airshows around Europe.
==Development==

The requirements were stated in 1966 by Frank Kolk, an American Airlines executive, for a Boeing 727 replacement on busy short- to medium-range routes such as United States transcontinental flights. His brief included a passenger capacity of 250 to 300 seated in a twin-aisle configuration and fitted with two engines, with the capability of carrying full passenger loads without penalty from high-altitude airports like Denver. American manufacturers responded with widebody trijets, the McDonnell Douglas DC-10 and the Lockheed L-1011 Tristar, as twinjets were banned from many routes by the FAA.
On 26 September 1967, the British, French, and West German governments signed a Memorandum of Understanding to start development of the 300-seat Airbus A300.〔Endres 2004, p. 43.〕 An earlier announcement had been made in July 1967, but at that time the announcement had been clouded by the British Government's support for the Airbus, which coincided with its refusal to back British Aircraft Corporation's (BAC) proposed competitor, a development of the BAC 1-11, despite a preference for the latter expressed by British European Airways (BEA).
In the months following this agreement, both the French and British governments expressed doubts about the aircraft. Another problem was the requirement for a new engine to be developed by Rolls-Royce; the triple-spool RB207 of 47,500 lbf. In December 1968, the French and British partner companies (Sud Aviation and Hawker Siddeley) proposed a revised configuration, the 250-seat Airbus A250. Renamed the A300B, the aircraft would not require new engines, reducing development costs.〔Endres 2004, p. 45.〕 To attract potential US customers, American General Electric CF6-50 engines powered the A300 instead of the British RB207. The British government withdrew from the venture; however, the British firm Hawker-Siddeley stayed on as a contractor, developing the wings for the A300, which were pivotal in later versions' impressive performance from short domestic to long intercontinental flights. (Years later, through British Aerospace, the UK re-entered the consortium.)
Airbus Industrie was formally set up in 1970 following an agreement between Aérospatiale (France) and the antecedents to Deutsche Aerospace (Germany). They were joined by the Spanish CASA in 1971. Each company would deliver its sections as fully equipped, ready-to-fly assemblies.
The first prototype A300 was unveiled on 28 September 1972, making its maiden flight from Toulouse–Blagnac Airport on 28 October that year,〔Endres 2004, pp. 51–52.〕 which was later commemorated on a French three franc stamp. The first production model, the A300B2, entered service in 1974 followed by the A300B4 one year later. Initially the success of the consortium was poor, but by 1979 there were 81 aircraft in service. It was the launch of the A320 in 1987 that established Airbus in the aircraft market – over 400 orders were placed before it flew, compared to 15 for the A300 in 1972.
The A300 was the first airliner to use just-in-time manufacturing techniques. Complete aircraft sections were manufactured by consortium partners all over Europe. These were airlifted to the final assembly line at Toulouse-Blagnac by a fleet of Boeing 377-derived Aero Spacelines Super Guppy aircraft. Originally devised as a way to share the work among Airbus' partners without the expense of two assembly lines, it turned out to be a more efficient way of building aircraft (more flexible and reduced costs) as opposed to building the whole aircraft at one site.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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