To ShyT:
Thanks for that excellent info. You reminded me that the blade does not stall along its entire length, rather it starts with the hub and expands outwards and fore/aft of the 9 oclock position (American helos) as the stall deepens. Thanks.
To LZ:
RBS is not about precession per se, thats why it was addressed seperately to Dave Jackson's thread. Perhaps the topic title should have excluded it, but it entered this discussion because you attributed the nose up pitch experienced in RBS to gyroscopic precession. Hopefully, I have shown you an alternative explanation.
I note your comments about putting up theories for discussion, but arguing with known principles is not achieving anything. Your stated aim was to gain understanding and I am suggesting the road to that goal. The above explanation of a relatively straight forward situation is intended to help you grasp first principles so that your deeper discussions can be more benefitial to you, and less anoying for others. For example, there is no point discussing the effect of the moon on tidal fluctuations if you do not first accept that the earth is round and the moon orbits the earth. In our case, you need to understand flapping to equality before you can grasp phase lag, delta hinges, 2 per vibrations, flapping in a Bell teetering head, cyclic feathering, etc.
[ 04 August 2001: Message edited by: helmet fire ]