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Boeing 747: Corrosion in pylon fuse pin leading to metal fatigue 4 on board, 39 on ground Engine No.3 separated from its pylon which caused the adjacent engine No.4 to also fall off, taking the slats with them; stall and crash on attempted landing 1996-07-17 TWA Flight 800: Moriches Inlet, near East Moriches, New York, United States Boeing 747
With a wing loading of 100 lb/sq ft (490 kg/m 2) the load factor is twice smaller and barely reaches 1g at 40,000 ft (12,000 m). [15] Aircraft with low wing loadings tend to have superior sustained turn performance because they can generate more lift for a given quantity of engine thrust.
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%.
The Boeing YAL-1 airborne laser testbed was a modified Boeing 747-400F with a megawatt-class chemical oxygen iodine laser (COIL) mounted inside. It was primarily designed to test its feasibility as a missile defense system to destroy tactical ballistic missiles (TBMs) while in boost phase .
The squadron was first activated in 1989 as the 6517th Test Squadron and conducted flight testing of the McDonnell Douglas C-17 Globemaster III until it was inactivated in 1995 as the 417th Test Squadron. It was reactivated in 2006 and performed ground and flight testing on the Boeing YAL-1A until 2010, before that program was cancelled.
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.
High-lift devices compensate for this design trade-off by adding lift at takeoff and landing, reducing the speed and distance required to safely land the aircraft, and allowing the use of a more efficient wing in flight. The high-lift devices on the Boeing 747-400, for example, increase the wing area by 21% and increase the lift generated by 90 ...
The Boeing 747-121 [Note 1] rolled off of Boeing's assembly line in 1969 as the 25th Boeing 747 constructed. [citation needed] Originally registered as N744PA, the aircraft was delivered to Pan American World Airways . N744PA remained under the ownership of Pan Am until 1991, when the airline declared bankruptcy on January 8, 1991. [1] [2]