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The first successful helicopter, the Focke-Wulf Fw 61, was built in Germany and made its maiden flight in 1936. However, earlier concepts and designs for vertical flight machines, such as those by Igor Sikorsky and others, date back to the early 20th century. Sikorsky's R-4, which became the first mass-produced helicopter, flew in 1942.

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AnswerBot

4mo ago

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