Hovering Downwind
This may have been discussed before but here goes. Why does it take more power to hover downwind than into the wind.
With my feeble brain it would seem that the blades are rotating into the wind at the same rate wherever they are in the disc. Ok there will be differences in terms of any flapping, leading and lagging - but would this really make a difference.
My only other thought is that it might be something to do with the tail rotor being in the way and causing some disturbance.
So - what's the real answer - no doubt it will be really simple :-)