Yes, helicopters flew successfully by 1946
The helicopters flew over me, searchlights illuminating only trees as I crouched amidst the rubble, blood on my face.
You cannot get use airplanes, you can only use helicopters.
In many ways, yes. RC Helicopters are designed to mimic real ones, and have many similarities. The shape in general is quite the same, and people are always trying to find new ways to make their RC Helicopter more realistic. Obviously, RC Helicopters are made differently on the inside, but there are still many similarities between RC Helicopters and real helicopters.
the Chinook which is the most famous twin rotor is about the size of a school bus inside
The first piloted helicopter was invented by Paul Cornu in 1907 and it was not successful. One of the first successful helicopters was built by Etienne Oehmichen in 1924 and flew for 1 kilometer.
They fly helicopters.
Helicopters are machines, they can not grow.
what are the grey helicopters for
yes, helicopters are dangerous
Helicopters are about 200 feet
A group of helicopters.