i would think it goes whirr
You can visit the Sound Board website to hear sounds of helicopters. They have helicopter thwops, taking off sounds, and even sounds of the door being opened while the helicopter is in motion.
with helicopter mod
Because of what it sounds like--the chop-chop-chop sounds coming off the rotors.
There is a great website on Google if you type in 'Make Playing Helicopter':)
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
Alouette helicopter (registration F-RMKZ)
Spinning wings create lift to make helicopter fly.
"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.