The chevrons on the trailing edge of the GEnx-2B nacelle were made thinner. Referred to as the 747 Advanced prior to its launch, the 747-8 uses the same engine and cockpit technology as the 787, hence the use of the "8". The main gear are redundant so that landing can be performed on two opposing landing gears if the others are not functioning properly.For transportation of spare engines, the 747 can accommodate a non-functioning fifth-pod engine under the aircraft's port wing between the inner functioning engine and the fuselage.The 747-100 was the original variant launched in 1966.
Several versions of each variant have been produced, and many of the early variants were in production simultaneously. The 747-200 soon followed, with its launch in 1968. The delivery date left 28 months to design the aircraft, which was two-thirds of the normal time.As Boeing did not have a plant large enough to assemble the giant airliner, they chose to build a new plant. 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). All of the companies solved this problem by moving the cockpit above the cargo area; Douglas had a small "pod" just forward and above the wing, Lockheed used a long "spine" running the length of the aircraft with the wing spar passing through it, while Boeing blended the two, with a longer pod that ran from just behind the nose to just behind the wing.The 747 was conceived while air travel was increasing in the 1960s.In April 1966, Pan Am ordered 25 747-100 aircraft for US$525 million. With increased economy class seating, up to 498 passengers could be carried in early versions and up to 550 in later models.The initial order for the -100SR – four aircraft for Japan Air Lines (JAL, later Following the -100SR, Boeing produced the -100BSR, a 747SR variant with increased takeoff weight capability.
The Boeing 747-8 is a wide-body airliner developed by Boeing Commercial Airplanes, the latest and largest variant of the 747. In 1965, Joe Sutter left the 737 development to design the 747, the first twin aisle airliner. The The extra fuel capacity in the redesigned wing compared to the 747-400 eliminates the need to significantly change the The 747-400 and earlier versions had proven to be a very popular In June 2015, Boeing predicted new orders for the 747-8F based on its projections of a 4.7% annual increase in air cargo demand.For the 747-8, Boeing proposed some changes to the interior layout of the aircraft. This amount weighs in excess of 380,000 pounds. The type had an increased fuel capacity of 48,070 US gal (182.0 mThe development of the 747SP stemmed from a joint request between Pan American World Airways and The 747SP was granted a supplemental certificate on February 4, 1976 and entered service with launch customers Pan Am and Iran Air that same year.The 747-200B was the basic passenger version, with increased fuel capacity and more powerful engines; it entered service in February 1971.After launching the -200 with Pratt & Whitney JT9D-7 engines, on August 1, 1972 Boeing announced that it had reached an agreement with General Electric to certify the 747 with CF6-50 series engines to increase the aircraft's market potential. During the ceremonial 747 contract-signing banquet in Seattle on Boeing's 50th Anniversary, Juan Trippe predicted that the 747 would be "…a great weapon for peace, competing with Ultimately, the high-winged CX-HLS Boeing design was not used for the 747, although technologies developed for their bid had an influence.One of the principal technologies that enabled an aircraft as large as the 747 to be drawn up was the The project was designed with a new methodology called Boeing agreed to deliver the first 747 to Pan Am by the end of 1969. The As increasing numbers of "classic" 747-100 and 747-200 series aircraft have been retired, some have found their way into museums or other uses. 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.