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It took Igor Sikorsky a couple of tries between 1909 and 1910.
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Igor Sikorsky took this helicopter for a test run, and it lasted for four minutes.
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Igor Sikorsky had an idea of a single rotor vertical flight craft.
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In Stratford, Connecticut the first practical helicopter,VS-300, took flight. Designed and built by Igor Sikorsky. It did everything it was supposed to. Fly, hover, and deal with what people were trying to solve.
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The S-50 was unofficially marketed to the U.S. Army.
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The S-67 Blackhawk was built in nine months. The S-67 Blackhawk was used for an attack mission. It(the helicopter) for 4 years starting in 1970. It was reported as very smooth and responsive. It was also very maneuverable.