Originally Posted by
212man
I don’t understand that. If the aircraft starts rolling left to the inverted, I’m pretty sure every pilot would have full opposite right stick, or if it pitched vertically down they’d have full aft stick. Why is yaw different?
That doesn’t work like this neither. To the opposite, new civilian pilots are first and foremost taught to not over control and to avoid harsh, rapid or abrupt control inputs. We are taught to “ride it out”, in particular to be aware of mast bumping in turbulence (which requires the opposite of what you say, you must lean into the bank, not fight it with opposing cyclic) etc pp.
When this yaw problem develops (ie in the hover, or when transitioning from slow forward flight to hover) we are (in a H120, Gazelle or Guimbal anyway) already close to max power. Again, pilots primary fear is to avoid over torquing that engine by commanding much of that power sapping Fenestron in the back.
What is required here, namely to give full right boot, immediately and without delay, and to stand on that pedal stop until the rotation stops, comes as extremely counter-intuitive to most pilots, for the above mentioned reason.
This is the reason for many entirely avoidable accidents that are wrongly blamed on the lack of tail rotor effectiveness of the Fenestron.