with helicopter mod
Depends on the purpose and make of the helicopter.
Leonardo da Vinci did not actually 'make' a helicopter, he just drew his concept of it.
I don't really know what you mean. I'm sure that if you be creative, you can make a helicopter out of anything.
Igor Sikorsky made the first practical helicopter
Igor Sikorsky made the first practical helicopter
Spinning wings create lift to make helicopter fly.
Alouette helicopter (registration F-RMKZ)
"For every action there is an opposite and equal reaction." For the helicopter to make the blade move in one direction, the blade will try to make the helicopter move in the opposite direction. Since the blade tries to make the helicopter spin, something is needed to keep the helicopter from spinning. So the manufacturer puts a tail rotor on the helicopter.
A helicopter and a calculator
the theme from "barney" ?
Standing next to a helicopter while the propellers are spinning is 110-115dB.