oh well at least I now know that coning angle is not the ratio of Lift to Cf apparently
and that neither lift nor Cf are proportional to RRPM^2 which is why apparently they don't cancel out (!)
furthermore courtesy of PPrune I have learnt that Vortex Ring a a condition that can be inescapable for 4000ft ! apparently
and I have learnt from Crab that if you crash then you are too low, seems obvious now, silly me.
PoF courtesy of PPrune
Last edited by AnFI; 15th October 2016 at 23:55.