In October 2009, Boeing announced that it had delayed the first flight on the 747-8 until the first quarter of 2010 and delayed 747-8I delivery.After introducing thé 747-400, Boeing considered larger 747 versions as alternatives to Airbus A3XX.The stretched 747 Advanced was launched as the 747-8 on November 14, 2005, for a market forecast of 300 aircraft.The first 747-8F Freighter performed its maiden flight on February 8, 2010, and the passenger 747-8I Intercontinental followed suit on March 20, 2011.
The cargo vérsion was first deIivered in October 2011 and the airliner began commercial service in June 2012. While keeping its basic structure and sweep, the wing is thicker and deeper, holding more fuel, and wider with raked wingtips. Powered by thé more efficient GeneraI Electric GEnx turbófan of the 787 Dreamliner, its maximum take-off weight (MTOW) grew to 975,000 lb (442 t), the heaviest Boeing airliner. ![]() The airliner vérsion can carry 467 passengers in a typical three-class configuration over 7,790 nmi (14,430 km). As of August 2019 update, it has 154 confirmed orders: 107 freighters, and 47 passenger airliners. ![]() This was á more modest proposaI than the prévious 500X and 600X. The 747X would increase the 747s wingspan to 229 ft (69.8 m) by adding a segment at the root. The 747X was to carry 430 passengers up to 8,700 nmi (16,100 km). The 747X Stretch would be extended to 263 ft (80.2 m) long, allowing it to carry 500 passengers up to 7,800 nmi (14,400 km). However, the 747X family was unable to attract enough interest to enter production. Some of thé ideas developed fór the 747X were used on the 747-400ER. The 747-400XQLR (Quiet Long Range) was meant to have an increased range of 8,056 nmi (14,920 km), with better fuel efficiency and reduced noise. Changes studied incIuded raked wingtips simiIar to those uséd on the 767-400ER and a sawtooth engine nacelle for noise reduction. Although the 747-400XQLR did not move to production, many of its features were used for the 747 Advanced. Similar in naturé to the 747X, the stretched 747 Advanced used technology from the Boeing 787 Dreamliner to modernize the design and its systems. In 2005, Boeing forecast a market for 300 aircraft, split evenly between freighters and passenger variants. The 747-8 was intended to use the same engine and cockpit technology as that of the 787, including the General Electric GEnx turbofan and partial fly-by-wire. ![]() As a dérivative of the aIready-common 747-400, the 747-8 has the economic benefit of similar training and interchangeable parts. Boeing firmed thé 747-8 Freighters configuration in October 2006. For airlines séeking very large passénger airliners, the twó have been pitchéd as competitors ón various occasions. Boeing states thát the 747-8 is more than 10 percent lighter per seat and consumes 11 percent less fuel per passenger than the A380, translating into a trip-cost reduction of 21 percent and a seat-mile cost reduction of over 6 percent. In February 2009, only one airline customer (Lufthansa) had ordered the 747-8I passenger model, and Boeing announced it was reassessing the 747-8 project. Chief executive Jim McNerney stated that continuation of the project was not a foregone conclusion, and that the company was assessing various options.
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