Translation guide
The rotating part of a machine, such as in an engine, motor, or helicopter.
The rotating component of a motor, engine, or other machine.
The most common and direct translation, used in technical and everyday contexts for rotors in motors, engines, and helicopters.
The large rotating blades on top of a helicopter.
ヘリコプターのローターが回り始めた。
The helicopter's rotor started spinning.
このモーターのローターは効率的だ。
This motor's rotor is efficient.
A more technical term, often used in engineering contexts for the rotating part of an electric motor or generator.
回転子の設計を改良した。
We improved the rotor design.
Same as above, but in context it clearly means helicopter rotor.
ローターの音がうるさい。
The rotor noise is loud.
Literally 'rotating wing', a technical term for helicopter rotor blades. Rarely used in everyday speech.
回転翼のピッチを変える。
Change the pitch of the rotor blades.