# Why stirring the cyclic helps in stuck left pedal?

In demonstrating stuck left pedal from a takeoff with my instructor yesterday when starting a nose left turn he had me stir or move the cyclic clockwise in small steady circles and pump the collective. It did slow the spin down significantly but I just don't understand why.

Any thoughts or comments would be greatly appreciated.

• Which helicopter? Was there forward speed or were you in a hover? – Koyovis Jun 27 '17 at 19:00
• The r22 and it was in a hover – Wes Jun 27 '17 at 20:27

On pumping the collective: there is an effect of how fast the collective pitch is raised, on the torque exerted. The figure below shows $C_T$ (a dimensionless measure of rotor torque) against time for a full sweep of the collective from full down to full up. Rapid deflection causes a torque overshoot, so a higher torque than a slow deflection.