travelling snake oil salesman
You can't imagine how on the point you are.
That autorotation is just that. An autorotation. Nothing revolutionary here. We have all done them like that at one point or another.
The French Aviation Research institute has won a contract to test the viability of the Vuichard thing. That is the first time this manoeuvre is tested in a controlled way.
They did some tests on VRS in the early 2000's and in the published paper you see the flapping amplitude is erratic and about double that of the normal flight regime on a three-bladed helicopter. Might be more on a two-bladed.
Now when you push the stick forward, the blades lift in the back. When you go sideways, the blades are much closer to the tail boom and the tail boom is coming towards the disk, due to the horizontal stabiliser and because you are going straight down. And with the CG forward with two blokes in front, one has the nose hanging down anyway. I am really not comfortable with this idea.
There was that accident in Texas(?) where two people died during a training flight that
AFAIK was scheduled to be a VRS training. If the NTSB finds evidence that the Vuichard thing was responsible for that and the French can show that one should not do that, Vuichard, Robinson and Tim Tucker will be in a world of hurt. Imagine, Robinson teaches a manoeuvre that wasn't cleared in a controlled flight test environment. Boy the lawyers will dive on them like vultures on a carcass.