Originally Posted by
Tatischeff
@henra : What you say is interesting: a retreating blade stall can result in the rollback of the entire rotor ? So the maximal loss of lift is on the back of the H/C (the phase shift is still applicable) ?
Retreating Blade stall will cause maximum loss of Lift on the side of the retreating blade but with the phase shift the disc will mainly tilt to the rear.
A severe retreating blade stall usually is a reliable way to surgically chop off the tail of any helicopter. Teetering Rotor systems are significantly more prone to it but in a very violent case you will achieve this even in a fully articulated system. The only type of rotor system where it might be more or less impossible would be a rigid head (Bo105/EC135). I'm not aware of a case where someone managed to chop off the tail in one of those with a retreating blade stall.