I would have to agree with the other posters, most of the JSUPT/JPPT AF airsickness is somewhat self induced by the stress of trying to impress IPs, the alien face mask O2 gear, the brain bucket and the parachute/harness.

It seems from casual observations over the years, most people get over the airsickness. The airsick programs at the bases do have some differences and this seems to be flight doc dependent, life skills dependent, and aerospace physiology dependent. Some docs go for meds and the chair right away, some wait until the second or third event, which means there were two more sorties the student flew without learning due to being sick. Some bases use Lifeskills/Mental Health and they use biofeedback machines to actually give you realtime feedback for all those breathing stress control techniques they toss out as well as the dietary advice.

The T-6 does have better a/c than the T-37 but to me, it seems the torque and p-factor produces more of a Mad Hatter Teacup ride in the first few rides and seems to induce a bit more airsickness until students get the hang of using the rudder to not fly sideways or whip back and forth especially on touch and goes or go arounds. Horsepower per pound the airplane has more get up and go than a fully loaded P-51D did in WWII loaded up with a full load of .50 cal, and two 108 gal drop tanks for an escort mission to the heart of the Reich and back to merry old England.

A very small percentage of people are not cut out for this type of flying. A guy in my class at CBM washed back into our class in T-37s. This was before the form check was part of the syllabus and he came to us with nothing but Instrument sorties remaining. So for the last 6 weeks, he only flew Instrument sorties and pulled no Gs. Evidently, he had quite a few issues in early contact until he acclimated. But he lost his stomach acclimation during the long DNIF/I ride vacation from Gs. He puked his way out of 38s in the first four rides after we crossed the hall as a class. A few years ago as an IP, we had a guy who could fly the heck out of the Tweet, but he had big issues in IFT and in the Tweet. He could puke and not have to give up the jet, it was trimmed so well and when it was over it was right back to business. He got over it enough to solo, then had a DNIF and a couple of post solo recurrences while he reacclimated. We kinda talked him into going T-1 or T-44 just because we feared he would have washed out like the guy in my UPT class. This especially since the current 38 program has you out of flying longer than the old days with academics and the centrifuge requirement. Lastly, the worst one I have ever seen was in the T6. Thank goodness he was in front and not beside me. I am very smell sensitive and with 100% and by not looking in their direction I was able to detach in the Tweet. But when we shut down the T-6 and until he got the canopy open, I was miserable. I actually had to put the mask back on during the taxi in, because I could smell it from the back. He looked like death warmed over on his dollar ride, and we never went over 30 degrees of bank or two Gs. It was past 1630 and the doc was already at home and wanted to see him the next day. I told the doc it was the worst event I had seen in 7 years of doing this. The doc came back to base, saw the kid. The next two weren't much better. Poor guy eventually washed out.