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Aviation includes the activities surrounding mechanicalflight and theaircraft industry.Aircraft includefixed-wing androtary-wing types, morphable wings, wing-less lifting bodies, as well aslighter-than-air aircraft such ashot air balloons andairships.
Aviation began in the 18th century with the development of thehot air balloon, an apparatus capable of atmospheric displacement throughbuoyancy. Clément Ader built the "Ader Éole" in France and made an uncontrolled, powered hop in 1890. This was the first powered aircraft, although it did not achieve controlled flight. Some of the most significant advancements in aviation technology came with the controlled gliding flying ofOtto Lilienthal in 1896. A major leap followed with the construction of theWright Flyer, the first poweredairplane by theWright brothers in the early 1900s.
Since that time, aviation has been technologically revolutionized by the introduction of the jet engine which enabled aviation to become a major form of transport throughout the world. In 2024, there were 9.5 billion passengers worldwide according to theICAO. As of 2018, estimates suggest that 11% of the world's population traveled by air, with up to 4% taking international flights. (Full article...)
...thatAstro Flight, Incorporated ofMarina del Rey, California created the world's first practical electric-poweredradio controlled model airplane and the world's first full-scale solar-powered airplane?...that theAlexander Aircraft Company, which produced Eaglerock biplanes inColorado, was the largest aircraft manufacturer in the world for a brief period between1928 and1929?... that thePZL SM-4 Łątka never flew, because its engine was not approved for use in flight?
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TheVZ-9 Avrocar (full military designationVZ-9-AV) was aCanadianVTOL aircraft developed byAvro Aircraft Ltd. as part of a secret U.S. military project carried out in the early years of theCold War.[1] The Avrocar intended to exploit theCoandă effect to provide lift and thrust from a single "turborotor" blowing exhaust out the rim of the disk-shaped aircraft to provide anticipatedVTOL-like performance. In the air, it would have resembled aflying saucer. Two prototypes were built as "proof-of-concept" test vehicles for a more advanced USAF fighter and also for a U.S. Army tactical combat aircraft requirement.[2] In flight testing, the Avrocar proved to have unresolved thrust and stability problems that limited it to a degraded, low-performanceflight envelope; subsequently, the project was cancelled in 1961.
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