4 ms·

Let me see if I got this: for instance, a helicopter can turn off their anti-torque tail rotor if the speed of the main rotor is constant?

• function_seven 4y ago
  No, because the main router isn’t applying a pure downward thrust. It’s also moving air in the direction of rotation. A turbine has internal baffles and the ducting itself to direct the air in one direction (?)
• muyuu 4y ago
  without friction with the air/medium it would have to turn it off or it would start spinning
• lunaticlabs 4y ago
  Yes and no. The torque in helicopter is primarily a side effect of power being applied to the rotor. When a helicopter auto rotates (such as after an engine failure), the pilot has to remove anti torque forces with the pedals. This remains true even when you change pitch to slow your descent to the ground. So as long as no power is being applied, if you are in a free descent with a constant rotation on your rotor, then no, you will not need anti torque. Source: I am a helicopter pilot.
  • slig 4y ago
    Fantastic, thank you!