Airbus A340 is a large commercial passenger aircraft manufactured by Airbus. It has a design similar to the type Airbus A330 but the A340 uses four engines are not just two like the A330. Intended to replace the previous generation aircraft like the Boeing 747 but this latest variants now compete with the Boeing 777. More than 370 A340 operated worldwide in September 2010.
Development
The first study published on the A340 which has the code 1981 TA11, which is shown in the magazine Air International edition in November (along with the appearance of the A300 in the same year at the Farnborough Airshow.) Image concept of A320 (SA 9) and A330 (TA9) also published, along with performance estimates made by Airbus Industrie. Airbus A340 last sent to Iberia in 2010.
A340 was launched in June 1987 as a complement to long-haul flights from short-haul aircraft A320 and A300 medium-range. At that time, a twin-engine Airbus aircraft have a weakness compared to aircraft such as Boeing 747 ETOPS problem which is defined as a rule: a twin-engine aircraft should remain at the farthest distance of 60 minutes daribandara alternative, which prevent them from competing in long distance flights over water. Furthermore, wide-bodied aircraft ETOPS qualified berpenumpang 250-300 seats, peaswat engined three DC-10 and L-1011, is aging, because it was entering the ministry since the early 1970s.
A340 is designed in parallel with the A330 twin-engine aircraft: two planes have the same wing and similar aircraft hull structure, and borrow almost keseliruhan avionics technology and composite structures developed for the A320. A330 and A340 are assembled together in the center of final assembly at Toulouse-Blagnac, France.
A340 is expected to use the new superfan engines made by International Aero Engines, but the development of the machine is stopped. Engine house of the superfan engine has enough space that allows the laying of a large fan at the rear of the machine. As a result of the superfan cancellation by IAE, CFM International CFM56-5C4 engine used as the sole option than to choose another alternative machines. A longer version, the A340-500 and -600, powered by Rolls-Royce Trent 500.
When the A340 make its debut in 1991, warned that the wings are not mechanically strong enough to carry the machine beyond the cruising speed tanpamembengkok and vibrate. To overcome this, a buffer under the wing of the so-called Plastron developed to fix airflow problems around the engine mountings and to add flexibility. A340 modification begin commercial service in 1993 with Lufthansa and Air France
In the 1990s, when airlines began looking for a replacement aircraft for the flight back to the 1970s made 747-100/200, Airbus studied extension of the framework to make the A340-400, which is planned over 70m long. This has become unpopular because of CFM56 engines limit the capability of growth and mileage will be reduced to 10,000 km (5399.6 nmi). When this plan was canceled, a larger wing and new engines decided kembinasi made. Initially, Pratt & Whitney to provide a proposal for a new machine, but the problem of contract makes Airbus chose Rolls-Royce Trent in 1997.
A340 flight control system is equipped with fly-by-wire digital. The aircraft also use the joystick dariapda side using the front wheel, with one stick on the left side and stick the other pilot on the right side of the co-pilot. A340 flight instruments are very similar to those owned by A320, and hiring pilots with the same rating with the A330. this allows the crew to fly the A320 A330/A340 flight and vice versa with minimal additional training. This saves costs for airlines that operate both types of aircraft. The cockpit uses a digital cockpit system using CRT display for aircraft A340-200 and A340-300 and now using screen liquid crystal display (LCD). some major structural composites are also used.
A340 is also the first commercial aircraft that allows passengers to use cell phones during flights. In March 2008 Emirates introduced a system that allows passengers to make calls using their cell phone. But they can not receive calls and the system is not available when the flight prophecy and during takeoff and landing.
Development
The first study published on the A340 which has the code 1981 TA11, which is shown in the magazine Air International edition in November (along with the appearance of the A300 in the same year at the Farnborough Airshow.) Image concept of A320 (SA 9) and A330 (TA9) also published, along with performance estimates made by Airbus Industrie. Airbus A340 last sent to Iberia in 2010.
A340 was launched in June 1987 as a complement to long-haul flights from short-haul aircraft A320 and A300 medium-range. At that time, a twin-engine Airbus aircraft have a weakness compared to aircraft such as Boeing 747 ETOPS problem which is defined as a rule: a twin-engine aircraft should remain at the farthest distance of 60 minutes daribandara alternative, which prevent them from competing in long distance flights over water. Furthermore, wide-bodied aircraft ETOPS qualified berpenumpang 250-300 seats, peaswat engined three DC-10 and L-1011, is aging, because it was entering the ministry since the early 1970s.
A340 is designed in parallel with the A330 twin-engine aircraft: two planes have the same wing and similar aircraft hull structure, and borrow almost keseliruhan avionics technology and composite structures developed for the A320. A330 and A340 are assembled together in the center of final assembly at Toulouse-Blagnac, France.
A340 is expected to use the new superfan engines made by International Aero Engines, but the development of the machine is stopped. Engine house of the superfan engine has enough space that allows the laying of a large fan at the rear of the machine. As a result of the superfan cancellation by IAE, CFM International CFM56-5C4 engine used as the sole option than to choose another alternative machines. A longer version, the A340-500 and -600, powered by Rolls-Royce Trent 500.
When the A340 make its debut in 1991, warned that the wings are not mechanically strong enough to carry the machine beyond the cruising speed tanpamembengkok and vibrate. To overcome this, a buffer under the wing of the so-called Plastron developed to fix airflow problems around the engine mountings and to add flexibility. A340 modification begin commercial service in 1993 with Lufthansa and Air France
In the 1990s, when airlines began looking for a replacement aircraft for the flight back to the 1970s made 747-100/200, Airbus studied extension of the framework to make the A340-400, which is planned over 70m long. This has become unpopular because of CFM56 engines limit the capability of growth and mileage will be reduced to 10,000 km (5399.6 nmi). When this plan was canceled, a larger wing and new engines decided kembinasi made. Initially, Pratt & Whitney to provide a proposal for a new machine, but the problem of contract makes Airbus chose Rolls-Royce Trent in 1997.
A340 flight control system is equipped with fly-by-wire digital. The aircraft also use the joystick dariapda side using the front wheel, with one stick on the left side and stick the other pilot on the right side of the co-pilot. A340 flight instruments are very similar to those owned by A320, and hiring pilots with the same rating with the A330. this allows the crew to fly the A320 A330/A340 flight and vice versa with minimal additional training. This saves costs for airlines that operate both types of aircraft. The cockpit uses a digital cockpit system using CRT display for aircraft A340-200 and A340-300 and now using screen liquid crystal display (LCD). some major structural composites are also used.
A340 is also the first commercial aircraft that allows passengers to use cell phones during flights. In March 2008 Emirates introduced a system that allows passengers to make calls using their cell phone. But they can not receive calls and the system is not available when the flight prophecy and during takeoff and landing.
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