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https://gamuza.pl/wp-content/uploads/2021/07/DJI_0214-1140x641.jpg1140641 The helicopter that resembles the one we know today was created in the 1940s by the designer Igor Sikorski. Sikorski himself was called Mr Helicopter, and his machines produced in the USA revolutionised the aviation industry. What were they needed for? Need is the mother of invention. Helicopters were developed before and during the…