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A rotary-wing aircraft, rotorwing aircraft or rotorcraft is a heavier-than-air aircraft with rotary wings that spin around a vertical mast to generate lift. The assembly of several rotor blades mounted on a single mast is referred to as a rotor .
Early flying machines include all forms of aircraft studied or constructed before the development of the modern aeroplane by 1910. The story of modern flight begins more than a century before the first successful manned aeroplane, and the earliest aircraft thousands of years before.
In the early 1920s, Argentine Raúl Pateras-Pescara de Castelluccio, while working in Europe, demonstrated one of the first successful applications of cyclic pitch. [1] Coaxial, contra-rotating, biplane rotors could be warped to cyclically increase and decrease the lift they produced.
22 Αυγ 2018 · First flown in 1922, this aircraft completed the first 1-km (0.6-mi.) closed-circuit helicopter flight in 1924. Italian aeronautical engineer Corradino D’Ascanio in 1930 built the D’AT3, a...
The first concept of rotary wing aviation came from the Chinese in the fourth century A.D. A book called "Pao Phu Tau" tells of the "Master" describing flying cars (fei chhe) with wood from the inner part of the jujube tree with ox-leather straps fastened to returning blades as to set the machine in motion (huan chien i yih chhi chi).
Key Problems in Early Rotorcraft Development •Understanding basic aerodynamics of vertical flight –Amount of power to produce fixed amount of lift was unknown –First significant application of aerodynamic theory to helicopter rotors came about in the early 1920s •Lack of a suitable engine
8 Φεβ 2018 · LONG BEFORE THE Wright Brothers first flew at Kitty Hawk, backyard homebuilders were experimenting successfully with rotary-winged aircraft capable of vertical takeoff and landing. Earliest examples of such devices were the Chinese tops; their origins are lost in antiquity, but they were well-known long before Leonardo da Vinci’s vertical ...
