What shall be considered before terminating a turn in an autorotation?
Turns (or a series of turns) can be made during autorotation to facilitate landing into the wind or avoiding obstacles. Turns during autorotation should be made early so that the remainder of the autorotation is flown identically to a straight-in autorotation. The most common turns in an autorotation are 90 degrees and 180 degrees.
Pilots when encountering an engine failure must simultaneously reduce collective, apply appropriate anti-torque pedal and cyclic to maintain proper attitude/airspeed. Throughout the autorotation, the Pilot should continually crosscheck the helicopter’s attitude, rotor RPM, airspeed, and verify that the helicopter is in trim (centered trim ball).
Throughout the manoeuvre, rotor RPM should be maintained in the range recommended in the Flight Manual. Rotor rpm outside of the recommended range results in a higher rate of descent and less glide-ratio.
When the rotor RPM exceeds the desired value as a result of increased G load in the turn, timely use of up Collective will increase the pitch of the blades and slow the rotor to the desired RPM.
Ending a turn the Collective, if during turn had been raised, must be lowered, reduce pitch angle, in order to prevent rotor RPM decrease due to high pitch angle.
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