DJI Phantom 2 Vortex Ring State crash (and how to avoid it)
Автор: Andreas Kamél
Загружено: 2014-09-26
Просмотров: 14917
The vortex ring state, also known as settling with power, is a dangerous condition that may arise in helicopter flight, when a vortex ring system engulfs the rotor causing severe loss of lift.
The FAA sees these terms as the same thing, whereas Transport Canada sees them as two different phenomena.
Essentially, the helicopter descends into its own downwash. When the condition arises, increasing the rotor power merely feeds the vortex motion without generating additional lift. This condition also occurs with tiltrotors, and was responsible for an accident involving a V-22 Osprey. Vortex ring state caused the loss of a heavily modified MH-60 helicopter during Operation Neptune Spear, the raid that killed Osama bin Laden.
https://en.wikipedia.org/wiki/Vortex_...
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