A-380 v/s B 747

Airbus A-380 v/s Boeing 747 :

A380

The Airbus A380 is a wide-body aircraft manufactured by Airbus. It is the world's largest passenger airliner. Airbus studies started in 1988 and the project was announced in 1990 to challenge the dominance of the Boeing 747 in the long haul market. The A3XX project was presented in 1994; Airbus launched the €9.5 billion ($10.7 billion) A380 programme on 19 December 2000. The first prototype was unveiled in Toulouse on 18 January 2005, with its first flight on 27 April 2005. Difficulties in electrical wiring caused a two-year delay and the development cost ballooned to €18 billion.

A380 was first delivered to Singapore Airlines on 15 October 2007 and entered service on 25 October. Production peaked at 30 per year in 2012 and 2014. However, Airbus concedes that its $25 billion investment for the aircraft cannot be recouped. On 14 February 2019, after Emirates reduced its last orders in favour of the A350 and the A330neo, Airbus announced that A380 production would end by 2021 which would be the end of the double decker aircarfts from the aviation

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Boeing 747

The Boeing 747 is a large wide-body airliner and cargo aircraft manufactured by Boeing Commercial Airplanes in the United States. After introducing the 707 in October 1958, Pan Am wanted a jet 2½ times its size, to reduce its seat cost by 30% to democratize air travel.[9] In 1965, Joe Sutter left the 737 development to design the 747, the first twin aisle airliner. In April 1966, Pan Am ordered 25 747-100 aircraft and in late 1966, Pratt & Whitney agreed to develop its JT9D, a high-bypass turbofan. On September 30, 1968, the first 747 was rolled out of the custom-built Everett Plant, the largest building in the world by volume. The first flight took place on February 9, 1969 and the 747 was certified in December of that year. It entered service with Pan Am on January 22, 1970; it was the first plane dubbed a "Jumbo Jet".

The 747 is a quadjet airliner, initially powered by JT9D turbofans, then GE CF6 and Rolls-Royce RB211 for the original variants. With a ten-abreast economy seating, it typically accommodates 366 passengers in three travel classes. It has a pronounced 37.5° wing sweep, allowing a Mach 0.85 (490 kn; 900 km/h) cruise speed, and its heavy weight is supported by four main landing gear legs with four-wheel bogies each. The partial double-deck aircraft was designed with a raised cockpit so it could be converted to a freighter airplane by installing a front cargo door, as it was initially thought that it would eventually be superseded by supersonic transports.

As Boeing did not have a plant large enough to assemble the giant airliner, they chose to build a new plant. The company considered locations in about 50 cities,[39] and eventually decided to build the new plant some 30 miles (50 km) north of Seattle on a site adjoining a military base at Paine Field near Everett, Washington.[40] It bought the 780-acre (320 ha) site in June 1966 Developing the 747 had been a major challenge, and building its assembly plant was also a huge undertaking. Boeing president William M. Allen asked Malcolm T. Stamper, then head of the company's turbine division, to oversee construction of the Everett factory and to start production of the 747. To level the site, more than four million cubic yards (three million cubic meters) of earth had to be moved.[43] Time was so short that the 747's full-scale mock-up was built before the factory roof above it was finished.[44] The plant is the largest building by volume ever built, and has been substantially expanded several times to permit construction of other models of Boeing wide-body commercial jets

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Credit :    Ritu Singh

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