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Helicopter torque

Asked by: 354 views ,
Aerodynamics, Helicopter

In terms of a hover auto why do we need to apply right pedal when rolling off throttle? I understand torque effect but if we remove it by rolling off throttle why would we begin to spin in the direction of the rotor? What force is this demonstrating? Thanks from r the insight

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2 Answers

  1. Best Answer


    Kris Kortokrax on Apr 24, 2017

    There is a balance between the torque and the thrust produced by the tail rotor. When you close the throttle to initiate the hovering auto, you reduce the torque. This leaves too much tail rotor thrust, which causes the helicopter to rotate in the direction of the main rotor rotation. I’m sure you have noticed that you don’t apply full right pedal, otherwise you would begin to rotate to the right instead of the left.

    It’s all a balancing act. Also, note that the pedal application will be reversed if the main rotor rotates the opposite direction, such as Astar.

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  2. wes eads on Apr 24, 2017

    That makes perfect sense, well said! Thanks Kris

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