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autorotation

Line breaks: auto|rota¦tion
Pronunciation: /ˌɔːtə(ʊ)rə(ʊ)ˈteɪʃ(ə)n
 
/

Definition of autorotation in English:

noun

[mass noun]
1Rotation of an object caused by the flow of moving air or water around the shape of the object (e.g. a winged seed).
1.1Autorotation in the rotor blades of a helicopter that is descending without engine power.
Example sentences
  • I entered autorotation, jettisoned the external load and landed the aircraft.
  • Unless the crew had the presence of mind to close both throttles at the instant of autorotation, an asymmetric thrust condition would have made an inverted spin even more unstable.
  • The two were reportedly practicing high-altitude autorotations at 6,000 ft near the northern Italian air force base at Rimini.

Derivatives

autorotate

1
verb
Example sentences
  • Diaspores are 22-mg and 22 mm long samara-like winged seeds that autorotate while falling at an average terminal velocity of 0.81 [+ or -] 0.01 m/s, mean [+ or -] 1 SE.
  • During a previous flight, the pilot successfully autorotated to a field when the dual magneto failed.
  • Subsequent to the ‘flameout,’ the aircraft was autorotated and a safe landing was made.

Definition of autorotation in:

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