The rotor disc should move, do not get my wrong. What I mean by a fixed rotor is that the blades are not hinged on the hub of the aircraft. On say the H-60 there is a rubber bearing that connects the blade to the hub, so you can move it in 360 degrees of rotation (lead, lag, flap, and droop). Which is why you see it has a main rotor vibration dampening system to control the lead/lag motion while in flight. The huey's rotor blades are just directly bolts to the hub without that bearing. So they pitch to control the angle of the blade hitting the air creating lift. I will give examples of it since it is easier to see it (believe me it has taken me years of working on helicopters to even begin to understand how they fly, and even now I still don't fully comprehend it even though I see it on a daily basis). I just try to pass on what knowledge I do have. I was unaware that those effects have been replicated since FS9 though. I just recently started getting into helicopters in FSX as of late. The Huey was my first one in a long time cause I bought ones previously and got a bad taste in my mouth for them. Things should start getting better though. I will pass the comments along. I do enjoy topics like this. I always tend to learn stuff.
Here is simple rotor system like the Huey would have:
http://en.wikipedia.org/wiki/File:Robin ... orhead.jpgHere is a fully articulated rotor system(not as good a picture as I was looking for, but you can see it is a great deal more complex):
http://en.wikipedia.org/wiki/File:Sikor ... 230176.jpg