OK, here's how it works. I'm an active duty FE (flight engineer), and I'll try and keep it simple...
We have two rotor systems that counter rotate to cancel torque from the engines. Now the way this thing is different form an R-22 is that the rotor systems operate on differential collective thrust. That is when you put in forward cyclic, the fwd and aft heads add collective pitch, with the aft head inputting more than the fwd. So with the aft head producing more lift, you get nose down. Collective works the same, with both heads producing the same lift. As with roll, both heads tilt left or right. With yaw, one goes one way, the other goes the opposite. Pretty simple really, until you look at the flight control mixing bellcranks. Whoever designed that was a friggin' genious!! The good ol' "D" model is good for a max gross of 50000lbs, and the new 714A engines sport close to 5000 shp per side. She was (read still is...) the work horse in afghanistan. Nothing else is going to hover at 12-14000 ft, to put boots on the ground. And this MH-47G beast? Let me tell you...The Echo model is good, but I can't wait to get my Golf!!
I don't understand half of what you've written, but it's interesting anyway. Where else but FR could I get so much good information on so many different topics?
By the way, I'm asked a few people who haven't been able to tell me what the "M" stands for when used to describe a military aircraft, like this MH-47G. My only hunch is that the "M" seems to apply to aircraft often used for special operations work.