The word "aircraft" (air ship) is used there, but in the addendum of Apappears for the first time the word " helicopter », From the Greek helikos (spiral) and pteron (wing). When was the first helicopter created? On April 3, 1861, Ponton d'Amécourt took out a patent for his invention. Le first helicopter fully controllable was the Breguet Dorand Gyroplane-Laboratory with counter-rotating double rotor from 1935, but the first helicopter really viable was the 61 Focke-Wulf Fw 1936.
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