Tail rotor position

[nickel]

Hello,

I have been looking at some helicopter photos and I've noticed that some helicopters (usually military such as UH60) have tail rotors pretty above the center of gravity (CG position guessed by eye... ). Some others (usually civillian helis) have it close to the CG.

I can understand the logic of having the tail rotor close the CG level. In this position it would not create a turning moment around the longitudinal axis. How is this compensated in other helis? With digital control systems? Does for example a Uh60 have a serious rolling moment due to tail rotor if the control system is disabled?

thanks in advance