The rate at which a helicopter can pirouette, usually measured approximately in complete turns or degrees per second.
The pirouette rate is limited by a combination of how much or little thrust the tail rotor can generate compared to the main rotor, and how fast the gyro can keep track of the helicopter's heading. Good gyros can control pirouette rates in excess of 720 degrees (two complete revolutions) per second.
Good gyros also offer a more consistent pirouette rate; that is, the aircraft will turn at the same speed, regardless of whether the tail is being turned with the wind, or against the wind. Consistent pirouette rates make pirouetting maneuvers such as chaos much easier.
Share your opinion