I have another AuRo question for you. When a Helicopter autorotates (ideally) it is in the turbulent wake state and there is virtually no flow through the rotor disk (figure of Leishman attached). Now, when Vc (descent speed) is roughly -1.8 times vh (induced velocity at hover) the vehicle is considered to autorotate ideally.
What if we do not autorotate ideally? Does the vehicle still have to be in turbulent wake state? The real question: Is autorotation (and thereby maintaining of an ideal rotor rotation speed) possible in the windmill break state?
For instance, in the work of Dalamagkidis the OHA58 (Chapter 5.1.1) and the Raptor30v2 (Chapter 5.3.1) do not seem to be in turbulent wake state. As for my calculations, vc/vh was always slightly lower than -2.
However, the vehicles seem to perform well and land softly. So is the windmill break state a legitimate state for "autorotation"?
Thanks for helping me out! :)