Spectacular! Helicopter avoids a crash with the autorotation

Autorotation is a state of flight in which the main rotor system of a helicopter or other rotary-wing aircraft turns by the action of air moving up through the rotor, as with an autogyro, rather than engine power driving the rotor. The term autorotation dates to a period of early helicopter development between 1915 and 1920, and refers to the rotors turning without the engine. It is analogous to the gliding flight of a fixed-wing aircraft. (Font Wikipedia) Font video: Dimitris Ververelis This is a video found on YouTube that we post to encourage maximum attention in flight maneuvers. We try to always indicate the presenter or owner of the original clips. If this video is yours and we have not properly reported the credit or if you would like the video removed, please contact us via email. Thank you! Translated titles: ¡Espectacular! El helicóptero evita un choque con la autorrotación.