Thank you so much Jazz Hands and BOAC
I'm really ignorant on the subject.
And so I have to change my sentence:
...but in 45 -plus years of honest profession, mainly in the commercial Sector, conduct, thank God , without even getting a scratch on my plane , I've never met her in the real world. ...
So I experienced unknowingly the SI thousands of times.
As a matter of fact, often my students said they had felt unwell during certain maneuvers in the simulator.