It has two rotors that spin several blades.

The main rotor, attached to the top of the helicopter, spins four 20-foot (6-meter) blades.

Each blade in the reel forms a helix around the reel axis, and the set of spinning blades describes a cylinder.

It is, after all, a series of staged battles between remote-controlled machines equipped with spinning blades, ramming spears and swinging maces.

It was topped by spinning blades that gave it the appearance of a windmill.

Axial compressors rely on spinning blades that have aerofoil sections, similar to aeroplane wings.

Robot mode features retractable battle mask and spinning blades.

He usually carries an umbrella that can transform its top into a series of spinning blades.

Hovering as it approached, the ship revealed spinning blades that whirled like a windmill.

The baron reminded Rumata of a freight helicopter with idly spinning rotary blades.