Continued:
I still do believe that there is much we don't know about gyroplane stability and PPO, PIO, etc. The main one being the contribution that dynamic pitch damping has on static stability. Even the definition of DYNAMIC is not expressed accurately by the experts on these forums. Dynamic damping is not just limited to reducing oscillatons of a statically stable system. Dynamic damping also applies to simple, one-direction movement, such as a buntover. Dynamic damping takes the energy out of any movement, and if adequate, can make an otherwise statically unstable system, staticlly stable in the end.
Thanks, Greg