Originally Posted by
roundwego
It's because the centre of thrust from the fenestron is lower than the rotor head. This causes the fuselage to "hang" slightly right wing low. Speak to any Dauphin pilot. It doesn't take long to get used to. If the rigging is correct, it shouldn't change heading.
EC120 has the same profile for the same reasons. Single pilot from RIGHT seat, at high power setting (hover / approach to land) it is very pronounced - feels like you should slide off the seat on occasions!
Less pronounced in forward flight at high speed, but you still notice it.
For helicopters, it is the disc that is flying and the machine simply hangs underneath; it goes along for the ride. Not the same as fixed-wing, where the cabin is joined to the wing so that cabin down = wing down = turn. So we can have "cabin down" on one side but the disc is level = no turn