rotor
der Rotor, die Rotoren
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rotor
The rotating part of a machine, especially an electric motor or generator. It often works together with a stationary part called the stator.
Der Rotor des Elektromotors dreht sich mit hoher Geschwindigkeit.
The rotor of the electric motor rotates at high speed.
rotor
The rotating lifting or propulsion system of a helicopter or similar aircraft. The rotor blades generate lift or provide propulsion.
Der Rotor des Hubschraubers setzte sich langsam in Bewegung.
The helicopter's rotor slowly began to move.
| gender | masculine der |
|---|---|
| plural | die Rotoren |
| genitive | des Rotors |
| singular | plural | |
|---|---|---|
| nominative | der Rotor | die Rotoren |
| accusative | den Rotor | die Rotoren |
| dative | dem Rotor | den Rotoren |
| genitive | des Rotors | der Rotoren |
The article changes with the case; it is shown in colour.
'Rotor' is often used to form technical compounds. Particularly useful examples are 'Rotorblatt' (rotor blade), 'Rotorkopf' (rotor head), 'Rotorwelle' (rotor shaft), and 'Rotordrehzahl' (rotor speed); the second component indicates more precisely which part or property is meant.
Die Techniker kontrollierten die Rotorblätter und die Rotorwelle.
The technicians inspected the rotor blades and the rotor shaft.
In mechanical engineering, 'Rotor' often occurs with words such as 'Elektromotor' (electric motor), 'Generator' (generator), 'Welle' (shaft), or 'Drehzahl' (rotation speed). Typical collocations are 'sich drehen' (to rotate), 'angetrieben werden' (to be driven), and 'eine hohe Drehzahl haben' (to have a high rotation speed).
Der Rotor des Generators wird von einer Turbine angetrieben.
The generator's rotor is driven by a turbine.
When referring to a helicopter or similar aircraft, words such as 'Rotorblatt' (rotor blade), 'Auftrieb' (lift), 'landen' (to land), and 'abheben' (to take off) indicate the meaning of a rotating flight or propulsion system.
Vor dem Start prüfte die Pilotin, ob sich der Rotor frei drehen konnte.
Before takeoff, the pilot checked whether the rotor could turn freely.
