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) Translated titles: ¡Espectacular! El helicóptero evita un choque con la autorrotación. Spektakulär! Hubschrauber vermeidet einen Absturz mit der Autorotation