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The Boeing 747 is a large, wide-body (two-aisle) airliner with four wing-mounted engines. Its wings have a high sweep angle of 37.5° for a fast, efficient cruise speed [21] of Mach 0.84 to 0.88, depending on the variant. The sweep also reduces the wingspan, allowing the 747 to use existing hangars.
The Boeing 747-8 is the final series of the large, long-range wide-body airliners in the Boeing 747 family from Boeing Commercial Airplanes. ... Cruise speed: 4 ...
This is the speed at which drag is minimised. For jet aircraft, "long-range cruise" speed (LRC) is defined as the speed which gives 99% of the maximum range, for a given weight. This results in a 3–5% increase in speed. [8] It is also a more stable speed than maximum range speed, so gives less autothrottle movement. [9]
Design cruise, also known as the optimum cruise speed, is the most efficient speed in terms of distance, speed and fuel usage. [16] [17] [18] V cef: See V 1; generally used in documentation of military aircraft performance. Denotes "critical engine failure" speed as the speed during takeoff where the same distance would be required to either ...
Originally designated 747SB for "short body", it was later nicknamed "Sutter's balloon" by employees after 747 chief engineer Joe Sutter. [9] Boeing later changed the production designation to 747SP for "special performance", reflecting the aircraft's greater range and higher cruising speed. [10] Production of the 747SP ran from 1976 to 1983.
Concorde had a maximum cruising altitude of 18,300 metres (60,000 ft) and an average cruise speed of Mach 2.02 (2,150 km/h; 1,330 mph), more than twice the speed of conventional aircraft. [ 130 ]
The Boeing 747-400 is a large, long-range wide-body airliner produced by Boeing Commercial Airplanes, an advanced variant of the initial Boeing 747.The "Advanced Series 300" was announced at the September 1984 Farnborough Airshow, targeting a 10% cost reduction with more efficient engines and 1,000 nautical miles [nmi] (1,900 km; 1,200 mi) of additional range.
The Boeing 747 is a large-size, wide-body, four-engine, jet airliner. The 747-8I, the last passenger variant in production, is capable of carrying 467 passengers in a typical three-class configuration, has a range of 8,000 nmi (9,200 mi; 15,000 km) and a cruising speed Mach 0.855 (570 mph, 918 km/h, 495 kn).