Nobody, they built it
Igor Sikorski constructed the first successful modern helicopter
The first operational helicopter was built in 1936, the Focke-Wulf Fw 61.
It was discovered because inventors who had built aircraft could see the need for it.
Unknown
Igor Sikorsky
igor sikorsky
Paul Cornu invented the first helicopter. It was very different from modern helicopters, though.
They have been around for 70 years
basically US Marines use the modern helicopters for their missions or the president does for transport.
The helicopter.
7 kill streak.
In Stratford, Connecticutt