it is called a duel disk
No, they are correctly called 'rotor blades'
Blades
the blade is called rotor bladesThe rotor blades on top are called Main Rotor Blades, because they are the main source of lift for the helicopter. The smaller rotor blades on the tail are called Tail Rotor Blades.
The blades on a helicopter are called rotor blades. They are attached to the rotor mast and rotate to provide lift and control for the helicopter.
Knife blades.
The main objective of the blades is the conversion of wind energy into kinetic energy.
A wind machine with blades is so called a wind turbine, or a windmill.
You may have mixed 'Lego blades' up with 'Lego Bionicle'.
Erie Blades ice hockey team ended in 1982. Another team called the Erie Golden Blades played until 1987.
Rotor blades.
No!