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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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Nahid1371 🎩🐹
@nahid1371
In 1939, Sikorsky designed the first usable helicopter named Vot-Sikorsky VS-300, and by modifying his design, he built the Sikorsky R-4 helicopter, which was built in 1942 and became the first helic
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