I was just wondering if this phenomenon presents itself in the dynamic rotor model, and if any of you beta testers have run into this.
I know that sudden large applications of rudder may lead to blade intersection as a result of the top rotor experiencing a decrease in load and thus downward flapping, while the bottom rotor load increases, resulting in upward flapping.
However, I haven't seen any discussions on blade intersections as a result of retreating blade stall. I imagine that at very high speeds, the retreating blade may stall and cause a sudden downward flapping. This would resulting in loss of lift, which might prompt the pilot to apply more collective, causing an exacerbation of the retreating blade stall coinciding with upward flapping of the advancing blade. On the side where the retreating blade is above the advancing blade, this could lead to intersection.
This would be even more of a danger in the case where the pilot applies a sharp collective increase, even at moderate speed, leading to inertial over-flapping (as opposed to sudden retreating blade stall), and perhaps be enough to cause an intersection.
So do you risk destroying your own rotor blades if you don't go easy on the collective at high speeds?