Originally Posted by
Step Turn
Let me help....
It is certainly a hazard known to helicopter pilots, as the helicopter can come back out of translation, and require more power to maintain altitude, combined with affects upon control. Certainly if you're climbing out at Vy+, or in cruise speed, the affects of turning out of wind are probably negligible. It's the low speed maneuvering where the hazard presents itself.
This does not happen in real life. I have never EVER had a helicopter drop out of translational lift on me because of turning downwind, even in a slow orbit of a ground object.
The only danger here is the increase in groundspeed, so your reference point is now sliding past the window faster, which gives you a tendency to pull aft cyclic to slow down. You cause the drop through translation, not the wind.
There is still the same relative airflow over the rotor disc, upwind, downwind, crosswind, base.. the helicopter does not care.