Assertion: helicopter's rotor | /r/CapableOf | spin at same angular velocity
Facets:
value: with the net aerodynamic torque
type: OTHER
value: with rotors
type: OTHER
Source sentences:
text: If all rotors are spinning at the same angular velocity, with rotors one and three rotating clockwise and rotors two and four counterclockwise, the net aerodynamic torque, and hence the angular acceleration about the yaw axis, is exactly zero, which means there is no need for a tail rotor as on conventional helicopters.