mtoroshanga, no helicopter has blade anti-ice, ALL helicopters have blade de-ice, where the ice is formed then shed. The power needs of an anti-ice system would be perhaps ten times that of the de-ice systems, far beyond the ability of any power system on board the machine. The heat needed to melt a razor thin section of the ice next to the blade is small, especially when the ice above it (also a thin skin, unlike mtoroshanga's imaginary vibration inducing massive chunk) shields the heated section from the Mach .5 cold air blast. The ice detector determines the timing for the pulses, where they come at more frequent intervals as the ice accretion rate is higher, so that the thin skin of ice is blasted off before it grows too thick.
Engine bellmouths have de-ice because any shed would harm the engine. Typical de-ice requirements are from 5 to 10 watts per square inch. If a Puma/Black Hawk had deiced blades, it would need over 140 KW of power continuously just on the main blades! That is perhaps 5 Black Hawk generators saturated just for the blades.
I have no idea how mtoroshanga thinks he knows otherwise, it would be interesting to find out.
Regarding the difference between Design Engineers and Mechanic-Engineers, both professions are necessary. I am sure mtoroshanga is a pro at maintaining a safe, operable helo, but he is clearly lost designing a helicopter system, as lost as a design engineer would be determining how to overhaul a helicopter.