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Boeing conducted a series of test flights in 2015 with a modified Boeing 757, incorporating new wing-leading-edge sections and an actively blown vertical tail. [10] The left wing was modified to include a 6.7 m-span glove section supporting a variable-camber Krueger flap to be deployed during landing, protruding just ahead of the leading edge.
Photographs of the test were later involved in a hoax, which supposedly showed an Air Canada Boeing 747 with its back half exploding on landing. The photo was, however, an edit of an Air Canada Boeing 747 landing normally with the photo of the explosion test stitched onto the back of the aircraft. [3]
The Boeing 747 is a long-range wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2023. After the introduction of the 707 in October 1958, Pan Am wanted a jet 2 + 1 ⁄ 2 times its size, to reduce its seat cost by 30%.
DB-3 testbed aeroplane of TsAGI for laminar wing profiles research (1940) Sapphire turbojet engine fitted to an Avro 691 Lancastrian testbed (outer position), June 1954. A testbed aircraft is an aeroplane, helicopter or other kind of aircraft intended for flight research or testing the aircraft concepts or on-board equipment. These could be ...
Compared to the 747-400 and an intermediate 747 Advanced concept, the extra fuel capacity in the redesigned wing allowed Boeing to avoid adding costly new tanks to the horizontal tail. [119] The 747-8's vertical tail unit is largely unchanged, with a height of 63 ft 6 in (19.35 m).
Among its six active jets is one Boeing 747-400, per ch-aviation data. 88-year-old King Salman travels with a 1,500-person entourage and two Mercedes Benz limousines, The Points Guy reported.
The gas-guzzling four-engine 747 is costly and inefficient compared to newer twin-engine widebodies, like Boeing's 777 and 787 and Airbus' A330neo and A350, that airlines now more readily rely on.
On June 28, 1998, United Airlines Flight 863, a Boeing 747-400 flying United's regularly scheduled transpacific service from San Francisco International Airport to Sydney Airport was forced to shut down one of its right-wing engines and nearly collided with San Bruno Mountain while recovering from the engine failure.