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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 aircraft 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. Clément Ader built the "Ader Éole" in France and made an uncontrolled, powered hop in 1890. This is 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 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...)
The word 'helicopter' is adapted from the French hélicoptère, coined by Gustave de Ponton d'Amecourt in 1861, which originates from the Greek helix/helik- (ἕλικ-) = 'spiral' or 'turning' and pteron (πτερόν) = 'wing'.
Helicopters were developed and built during the first half-century of flight, with some reaching limited production, but it was not until 1942 that a helicopter designed by Igor Sikorsky reached full-scale production, with 131 aircraft built. Though most earlier designs used more than one main rotor, it was the single main rotor with antitorque tail rotor configuration of this design that would come to be recognized worldwide as the helicopter. (Full article...)
...that BŻ-1 GIL was the first Polish experimental helicopter?
... that Flying Officer (later Air Commodore) Frank Lukis was one of the original twenty-one officers in the RAAF when it was formed in 1921?
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Born in Earlsdon, Coventry, England on June 1, 1907, Whittle left Leamington College in 1923 to join the Royal Air Force (RAF). Through his early days as an Aircraft apprentice he maintained his interest in the Model Aircraft Society where he built replicas, the quality of which attracted the eye of his commanding officer, who was so impressed that he recommended Whittle for the Officer Training College at Cranwell in Lincolnshire in 1926, a rarity for a "commoner" in what was still a very class-based military structure. A requirement of the course was that each student had to produce a thesis for graduation. Whittle decided to write his thesis on future developments in aircraft design, in which he described what is today referred to as a motorjet.
Whittle and Hans von Ohain met after the war and initially Whittle was angry with him as he felt Ohain had stolen his ideas. Ohain eventually convinced him that his work was independent and after that point the two became good friends.
The Yakovlev Yak-42 is a line of tri-jet aircraft produced by the aircraft company Yakolev. The Yak 42 was produced from 1980-2003.
Historically, the yak-42 was competition for older Russian aircraft companies. The Yak-42 was only made in one passenger variant, but it was used in many tests of equipment.