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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.š
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irooma
@irooma
He's design is so good 100 $DEGEN
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