Actually, minor exposures to negative g in a simulator are indeed possible and used all the time. The "box" can "squat" very rapidly and can induce negative g on the occupants inside - provides exceptionally accurate representation of turbulence, when immediately followed by the entire simulator "lifting" again and providing an equally short "burst" of positive g. Of course, we are talking about a half-second "burst" of negative/positive g, but it provides a high fidelity experience for those inside. This ability to move up and down very quickly is enhanced by the more recent use of electric servo jacks, instead of the original hydraulic ones - the electric jacks are a marvel to watch - exceptionally fast moving and almost completely silent. I'm always in awe of the smarts behind the movement of simulators and the resultant experience for the occupants.
Last edited by josephfeatherweight; 5th Feb 2016 at 22:10.