Many people contributed ideas, but Igor Sikorski made the first successful helicopter
No African American invented the helicopter. The first practical helicopter was invented by Igor Sikorski, a Russian American.
Igor Sikorsky invented the first practical helicopter around 1940
Igor Sikorski invented the first practical flying helicopter.
Attempts to create helicopters can be traced back to Leonardo da Vinci, but the first working prototype helicopter, the VS-300, was invented by Igor Sikorsky (Russian/American) in 1939. The next model he designed was the R-4 in 1942, which was the world's first mass produced helicopter
usa
The first practical helicopter was invented about 1942
The helicopter was first used as a troop transport.
Igor Sikorsky invented the first practical helicopter
That is Igor Sikorski, and he was in his 40 's when he invented the first practical helicopter.
Igor Sikorski, a Russian born American, invented the first practical helicopter.
to fly
no