CH 47 Chinook Power curve differences from Single rotor.

[wokkawarrior]

Good morning all,

I'm getting examined next week by my trappers and wondered if anyone on PPRUNE had any information/ references on the differences for a tandem rotor power required curve from that of a single rotor helicopter.

Specifically i'm interested in the effect of:

-interference effects on induced power in the hover.
-LCT function on parasite power
-the lack of a tail rotor on rotor profile power.

Thanks in advance

WW