A helicopter tail rotor is fitted to
- counteract engine torque and provide a rapid turn facility.
- counteract main rotor torque and provide normal directional control.
- permit directional control.
Explanation from PART66Online
The tail rotor counteracts the main-rotor torque reaction to stop the fuselage spinning, and by varying its thrust it also provides normal yaw/directional control. This combined statement is more complete than options citing only directional control or only torque, since the tail rotor performs both functions.
H
harbhla asked · 11 May 2012
Please write your comment here.may be it is to counter main rotor torque and not engine torque ans ist seems more appropriate
Community Comments (2)
E
edya371
26 Jun 2012
Rotor torque is dependant on engine torque so in this context it is the same. But "provide normal directional control" is more appropriate than "rapid turn facility"
J
Jordi
1 Sep 2021
i agree with edya but to be more correct between the 2 answers counteract main rotor torque is more correct and to the point than engine torque.So even if you have a question without the next sentence,you should pick the counteract main rotor one.
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