Igor Sikorsky born in Kiev, Ukraine in 1889. As a schoolboy, built several modes of aircrafts and helicopters. He studied in Russia and Paris, France. He built the world’s first multi-engine aircraft.in 1919 after the Russian revolution, he emigrated to the USA. With his money, he ran out and taught Russian immigrants maths, astronomy and aviation. He worked as an aircraft designer. In 1923 he started an aeronautical company, the Sikorsky Aero Engineering Corporation. At 1925-1940 he created a series of inglessily successful aircraft including the first helicopter. At 1972 he died in USA!
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