yeah I actually thought about this and what I came up was like a circular cage with the person strapped in. It's digitally controlled unlike noisy hydraulics I don't know how but maybe lots of dry ice and superconductor they use for hoverboard.

Then you could generate inertia and g-forces by creating a centrifugal effect. For instance, to simulate a negative g maneuver in an airplane, you'd flip the user upside down and then rapidly spin the occupant towards the direction that creates the g-force due to centrifugal effect. Since you are constantly spinning at a very fast rate of speed, and wearing a helmet and headset you are unaware of this fact.

I'm not quite sure how safe this setup would be (spinning people for hours and hours at very high speeds)