Assertion: rotor's speed | /r/HasProperty | constant
Facets:
value: on a conventional helicopter
type: OTHER
Source sentences:
text: Most helicopter rotors spin at constant speed.
text: This rotor operates at constant speed and has lower starting current External resistance added to rotor circuit, increases starting torque Motor running efficiency improves as external resistance is reduced when motor speed up.
text: On a conventional helicopter the rotational speed of the rotor is constant; reducing it at lower flight speeds can also reduce fuel consumption and enable the aircraft to fly more economically.
text: This rotor operates at constant speed and has lower starting current External resistance added to rotor circuit, increases starting torque Motor running efficiency improves as external resistance is reduced when motor speed up.