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Many people of many nationalities worked on the helicopter as it was developed. The first working helicopter was probably the German Focke-Wulf Fw-61, which first flew in 1936.

But the man who made the most important design change was Igor Sikorsky, a Russian who emigrated to the US. He built a helicopter in the US that reached full-scale production in 1942 (131 aircraft built). His design of one main rotor and a small tail rotor became the standard.

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15y ago

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