While it’s very unlikely to ever happen, some day, I may be flying along in a helicopter when the engine decides to crap out.
Most people seem to think engine failure in a helicopter signals instant death.
Yea…not so much.
On the off chance the engine dies, you enter an autorotation. You begin a rapid descent, and the air flowing up through the main rotor maintains the rotor RPM. Around tree top level, you start a flare to slow the helicopter back down, and then perform a run-on landing. That’s a landing where you keep some forward momentum as you touch down and skid to a stop. (Yep, that’s why they’re called skids.)
When performing ANY landing, you always want it to be into the wind. Should the engine die when the wind is on your tail, you need to a 180-degree autorotation. That involves, you guessed it, a 180-degree turn *while* doing an autorotation.
It’s more difficult than a regular auto, but that’s why you practice, practice, practice.