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Aviation includes the activities surrounding mechanical flight and the aircraft industry. Aircraft includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as hot air balloons and airships.
Aviation began in the 18th century with the development of the hot air balloon, an apparatus capable of atmospheric displacement through buoyancy. Some of the most significant advancements in aviation technology came with the controlled gliding flying of Otto Lilienthal in 1896; then a large step in significance came with the construction of the first powered airplane by the Wright brothers in the early 1900s. Since that time, aviation has been technologically revolutionized by the introduction of the jet which permitted a major form of transport throughout the world. (Full article...)
Wind shear itself is a microscale meteorological phenomenon occurring over a very small distance, but it can be associated with mesoscale or synoptic scale weather features such as squall lines and cold fronts. It is commonly observed near microbursts and downbursts caused by thunderstorms, weather fronts, areas of locally higher low level winds referred to as low level jets, near mountains, radiation inversions that occur due to clear skies and calm winds, buildings, wind turbines, and sailboats. Wind shear has a significant effect during take-off and landing of aircraft due to their effects on steering of the aircraft, and was a significant cause of aircraft accidents involving large loss of life within the United States.
Sound movement through the atmosphere is affected by wind shear, which can bend the wave front, causing sounds to be heard where they normally would not, or vice versa. Strong vertical wind shear within the troposphere also inhibits tropical cyclone development, but helps to organize individual thunderstorms into living longer life cycles which can then produce severe weather. The thermal wind concept explains with how differences in wind speed with height are dependent on horizontal temperature differences, and explains the existence of the jet stream. (Full article...)
...that British Airways unveiled a new corporate identity in 1997 which involved repainting its fleet with around 20 daring tailfin designs by world artists?
...that the Battle of Britain Memorial Flight contains the world's oldest airworthy survivor of the Battle of Britain, alongside ten other historic aircraft - two of which fought over Normandy on D-Day? ... that a USAAF B-17 Flying Fortress aircraft crashed shortly after take-off at Bakers Creek, Queensland in 1943, killing 40 of the 41 service personnel on board and making it Australia's worst aviation disaster?
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The Wright brothers, Orville Wright (August 19, 1871 - January 30, 1948) and Wilbur Wright (April 16, 1867 - May 30, 1912), are generally credited with making the first controlled, powered, heavier-than-air flight on December 17, 1903. In the two years afterward, they developed their flying machine into the world's first practical airplane, along with many other aviation milestones.
In 1878 Wilbur and Orville were given a toy "helicopter" by their father. The device was made of paper, bamboo and cork with a rubber band to twirl its twin blades, and about a foot long. The boys played with it until it broke, then built their own. In later years, they pointed to their experience with the toy as the initial spark of their interest in flying.
Aérospatiale-BAC Concorde supersonic transport (SST), along with the Tupolev Tu-144, was one of only two models of supersonic passenger airliners to have seen commercial service.
Concorde had a cruise speed of Mach 2.02 (around 2170 km/h or 1,350 mph) and a maximum cruise altitude of 60,000 feet (18 300 metres) with a delta wing configuration and a reheat-equipped evolution of the engines originally developed for the Avro Vulcan strategic bomber. The engines were built by Rolls-Royce. Concorde was the first civil airliner to be equipped with an analogue fly-by-wire flight control system. Commercial flights, operated by British Airways and Air France, began on January 21, 1976 and ended on October 24, 2003, with the last "retirement" flight on November 26 that year.
Construction of the first two prototypes began in February 1965. Concorde 001 was built by Aerospatiale at Toulouse and Concorde 002 by BAC at Filton, Bristol. Concorde 001 took off for the first test flight from Toulouse on March 2, 1969 and the first supersonic flight followed on October 1. As the flight programme of the first development aircraft progressed, 001 started off on a sales and demonstration tour beginning on September 4, 1971. Concorde 002 followed suit on June 2, 1972 with a sales tour of the Middle and Far East. Concorde 002 made the first visit to the United States in 1973, landing at the new Dallas/Fort Worth International Airport to commemorate its opening.