Tail Rotor Power Consumption
I was just reading an article on Piasecki SpeedHawk, which is a modified YSH-60F with Vectored Thrust Ducted Propeller. It mentions that they "were required to trade a 500-hp tail rotor for" the new thruster.
Wikipidia says that the Powerplant is two General Electric T700-GE-401C turboshaft engine at 1,620 hp for a total of 3,240 hp, continuous.
Is it correct to assume that the tail rotor on a standard YSH-60F can draw up to (500 /3,200) * 100 = 15.5% of the engines' power?