The main blade on a helicopter is the 'rotor'
rotor
rotor
Helicopter Blades are bolted onto the main rotor
A rotor.
It has a rotor blade instead of wings.
It is called the rotor.
you go to reality tv go on to the helicopter blade jump and flip then you land on the middle of the helicopter blade then ta-da your brake dancing.
The angle of the rotor blades.
The rotor blade is the airfoil on helicopters.
Since air is not inherently flammable, there is no speed at which a helicopter blade would catch the air on fire.
Bristow has many types of helicopter with, 3, 4 and 5 blade rotors