Quote:
Originally Posted by Chris
You're missing the point ... Autorotation allows you to land a helicopter when the engines are mullered. As long as the rotors can free-wheel, the force of air passing over them as the helicopter falls is sufficient to turn them and slow the descent.
You have major problems when a system failure occurs that prevents the rotors from turning freely or if the helicopter is too low for the airflow to spin them up fast enough to be useful.
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And if they can't free wheel or were they to close to the ground for Autorotation to be effective?