| 11. | In case of an engine failure, the switch from helicopter to autorotation was automatic.
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| 12. | I see no signs of autorotation,
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| 13. | That suggests autorotation was taking place.
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| 14. | Pilots are trained to anticipate engine failure and perform autorotation to the ground without engine power.
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| 15. | On 10 May 1937, it accomplished its first autorotation landing with the engine turned off.
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| 16. | This design could function in autorotation.
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| 17. | The aerodynamic principles which rotate the rotor are equivalent to that in autogiros, and normal helicopters in autorotation.
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| 18. | Target speed in an autorotation is and the glide ratio is approximately 4 : 1 in maximum-glide configuration.
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| 19. | In order to do an effective autorotation, you need sufficient height and speed, and a safe place to land.
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| 20. | In the event of power loss, autorotation was found to be difficult due to the drag from the ramjet nacelles.
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