Rotor blade .
The ones up top are "Main Rotor Blades" and the ones on the tail are "Tail Rotor Blades". Generally they are Rotor Blades.
It is called the rotor.
A rotor.
The main blade on a helicopter is the 'rotor'
Retreating blade stall.
The main lifting blades make up the rotor
Q: Why is a helicopter called a "Chopper"? A: I think the names comes from the sound of the blades make: whop-whop or chop-chop. FYI, the helicopters that have the loud popping of the blades are usually a 2-blade of the Bell Helicopter design. The multi-blade helicopters do not have a sound as distinctive as the Bell helicopters. The sound comes from the blade striking the vortex generated by the blade ahead of it.
rotor
Helicopter Blades are bolted onto the main rotor
It has a rotor blade instead of wings.
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.
It is called a rotor, and it more closely resembles a wing than a propeller blade
The angle of the rotor blades.