united states
i think it was japan at the end of WWII
Nobody invented the helicopter in 1918
Igor Sikorsky invented the helicopter.
no
Russia
united states
i think it was japan at the end of WWII
I am wondering where was helicopter invented?
Nobody invented the helicopter in 1918
An engineer, Igor Sikorski, invented the 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 Sikorsky invented the helicopter.
France developed the first model of the helicopter. It was first invented by Paul Cornu, a french inventor. Some say the invention of the helicopter was inspired by Leonardo Da Vinci's flying machine.
no
Igor Sikorski invented the first practical flying helicopter.