2 questions to answer here apparently:
1°) For the reason to limit the g onset, apparently it was due to the fact that on a past protoype an aircraft was lost because of a pilot black-out. At the time they did not see anything wrong or strange with the aircraft, but they noted that the g-onset was very high... Thus the reason for limiting it on new projects.
Now I have to admit that I am not convince with that since I have never heard of such limitation and I can not find anything on the litterature, but maybe you guys have other experience...
2°) Now for what our aircraft response is concerned at low g demands we provide the pilot with the Nz in about 2 seconds (for 4 g that means a peak of Nz rate of about 6 g/sec), but when we go to higher g level we limit the peak in Nz rate to about 10.
Now again:
1°) Are you aware of any physiology requirements linked to g onset?
2°) Any reason to limit it in a different way for negative g's (if you revert sharply from 8 g's to - 3g's... not that it would be confortable)?