Rotating rotors on a helicopter create lift by generating airflow over the blades, allowing the helicopter to take off, hover, and maneuver in different directions.
The anti-torque pedals in a helicopter are used to keep the heli from rotating from the spin of the rotors (it controls the tail rotor)
Coaxial rotors on a helicopter provide increased stability and maneuverability by canceling out the torque effect of a single rotor system, allowing for more precise control and agility in flight.
The rotors are used for lift and thrust on a helicopter.
Titanium or composites. There are also steel and aluminum rotors.
A helicopter typically uses various forms of energy, including chemical energy from the fuel used to power the engine, mechanical energy in the rotating components like the main and tail rotors, and kinetic energy as it moves through the air.
They were aluminium
Because at present rotors are more efficient
it is probably 1-3 feet depending on the helicopter
That is the Chinook.
READ THIS - GOOD INFORMATION The wings of an airplane and the rotors of a helicopter both help the object fly. Without those the object could not fly because the wings of an airplane have wind going past it which keeps the airplane in the air. The rotors of a helicopter spin in the wind and help the helicopter fly.
Helicopters do not have any wings. Airplanes have wings Helicopter has rotors. A helicopter has at least two sets of rotors. One rotor creates lift ( Main Rotor on the top ) & the other prevents the helicopter from spinning in circles( Tail Rotor).
The rotor blades on a helicopter work the same way as wings on a fixed wing aircraft. The air passing faster over the top of the airfoil generates lift. Helicopter rotors spin so that the lift is generated without having to have forward airspeed like a fixed wing aircraft.