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elhamkad
@elhamkad
Igor Ivanovich Sikorsky .. was one of the pioneers of the aviation industry and a designer of helicopters and airplanes. In 1939, Sikorsky designed the first usable helicopter named Vot-Sikorsky VS-300 and modified his design to create the Sikorsky R-4 helicopter.🚁
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aryan🎩🐹🎭
@aryan8
The helicopter is one of the most complex human inventions.
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