Climb Torque vs. Cruise Torque

[Agog]

Hello All,

With the collective in a fixed position, I have noticed a difference (2% torque) between the torque value during a climb, and that when I level off.

How come the torque value rises in the climb?

Thanks

[Eric Hunt]

Actually, it is a reduction in the cruise. The rotor is getting more clean air from in front, rather than descending air from above. With less Induced Flow, the total reaction vector moves forward a little, reducing the rotor drag and thus the torque needed to maintain flight. Look at your Power Required curves to verify this.

Edited December 16, 2020 by Eric Hunt