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Helicopter Aerodynamics - translating tendency

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Uploaded by on Jun 9, 2009

Depicts the forces involved in and effects of translating tendency

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  • People, all this is telling you is that the T/R or "Anti-Torque" is acting as another force..You hover left skid low (CC spinning rotor) because if you hovered flat skidded with left pedal in, you would drift to the right.

  • @mat93fox

    This has nothing to do with "Translating tendency"..

  • Why does the helicopter drift to the right though??? I don't understand. The tail rotor counteracts the torque from the main rotor system. Isn't all the energy given off by the tail rotor used to counteract the torque? So where does the extra energy to create the right drift come from? And surely because the tail rotor is so far from the helicopter's centre of gravity, right drift should not happen. Instead, the tail should just swing to the right?

  • Bias cyclic control and off set mast

  • i would say that it would be best to compensate with cyclic imputs. if you have extreme loading you have increase your risk of dynamic rollover. You will also have less responsiveness when you make cyclic imputes to the right. Basically if you have full right cyclic (not likely) you won't have the same responsiveness if you had full left cyclic. I could be incorrect but i wouldn't mess mess with the helicopter's C/G.

  • So is that why I have to hold left cyclic? If I lean as far to the left as I can - I can let go of the cyclic - --- what is the best way to balance it? Move some weight to the left of C/G????

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