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History of aircraft A-Z

Airship   A streamlined balloon filled with lighter-than-air gases such as helium, powered by engines and steered by a rudder. Airships were used for passenger flights until the 1940s.

Autogyro   An aircraft designed by Spanish engineer Juan de la Cierva in 1923. Rotor blades above the cockpit turned by themselves in the airflow caused by forward motion and lifted the machine. 

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