Inventions
Helicopters

When was the single rotor helicopter invented?

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Answer

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11/16/2007

1957 by Boelkow called the Bo-102. It had a single bladed main rotor and a single bladed tail rotor. For more go to http://www.aviastar.org/helicopters_eng/bo-102.php in 1957 by Boelkow called the Bo-102 it had a single main and tail rotor. For more go here http://www.aviastar.org/helicopters_eng/bo-102.php