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The 747-400's wingspan was stretched by 17 feet (5.2 m) over the Classic 747 through wingtip extensions. For reduced aerodynamic drag, the wings were fitted with 6-foot (1.8-metre) tall winglets. [12] Despite the added length, the wings were 6,000 pounds (2,700 kg) lighter as a result of new aluminum alloys. [12]
The improved 747-400, featuring canted winglets, entered service in February 1989 with Northwest Airlines. The 747-400 is an improved model with increased range. It has wingtip extensions of 6 ft (1.8 m) and winglets of 6 ft (1.8 m), which improve the type's fuel efficiency by four percent compared to previous 747 versions. [179]
The two 747-8 variants feature a fuselage stretch of 18.3 ft (5.6 m) over the 747-400, bringing the total length to 250 ft 2 in (76.25 m). The 747-8 is the world's longest currently-operational passenger airliner , surpassing the Airbus A340-600 by 3.1 ft (0.95 m).
The Boeing Dreamlifter, officially the 747-400 Large Cargo Freighter (LCF), is a wide-body cargo aircraft modified extensively from the Boeing 747-400 airliner. With a volume of 65,000 cubic feet (1,840 m 3 ) [ 1 ] it can hold three times that of a 747-400F freighter. [ 2 ]
Boeing delivered five 747s in 2022, while in 1990, the peak delivery year of the bestselling 747-400 version, Boeing delivered 70 747s. As different sections of the last 747 – the wings or ...
The winglets increased the 747-400's range by 3.5% over the 747-300, which is otherwise aerodynamically identical but has no winglets. The 747-400D variant lacks the wingtip extensions and winglets included on other 747-400s since winglets would provide minimal benefits on short-haul routes while adding extra weight and cost, although the -400D ...
The president negotiated with Boeing for a pair of new 747-8 aircraft during his first administration - between 2017 and 2021 - but the planes are now years behind schedule. The two aircraft were ...
Eccentric hobbyists and/or copycats are trolling the state and the media with repeated fly-bys of the vehicles — one of which had the “wingspan of a 747,” a truck driver from Oxford, NJ told ...