AnFI, you said:
you can see clearly that the coning angle is not dependant on RRPM
However, I can clearly see that a chopper doing an engine failure at the hover will have its coning angle increasing with decreasing RRPM, even though the lift is slowly decreasing.
But I suppose that, as the revs decay, the CL would be increasing with the pilot pulling in pitch to slow the descent and cushion on, which from your equation would increase the coning angle. Apparently the change in angle between low RRPM (pitch high, CL high) and high RRPM (pitch less, angle less) is in fact due solely to CL and not RRPM.
What a clever little secretary. Learn sumpfink every day. But yer average dum student can easily comprehend it if we (mistakenly) say that coning angle is the result of lift (upward force) and RRPM (outward force), the resultant vector of which lies neatly along the span of the blade.