Hey man, I know where you are coming from. I knew just from past experience that I was going to have problems in flight school. It started in IFS and got worse into primary. For me it was totally incapacitating. I was throwing up 3-4 times within the first 15min of flight. I was also a Vance student which meant very soon after I started, I was auto-unsating flights because of puking. I went to the spin chair 23+ plus times and had my friends spin me on the weekends.
I won't bore you with all the details but both the Navy and AF will do whatever they can to keep a student from attriting simply for airsickness. The AF gets a bad rap because they unsat people...their program and MASS scoring systems allows AF studs to unsat for airsickness and make it through grade wise. Unfortunately, when you take an AF designed system (MPTS syllabus + TIMS) and try and make it fit the Navy's way of doing things you run into problems.
After selecting helos, I felt nothing all through helo advanced.
I didn't feel anything throughout my first few flights in the 60S. However, when I observed a fam flight in the back, I thought I was going to cover the cabin with vomit...especially when they were doing autos.
I know I am rambling but from someone who almost attrited for airsickness, I can tell you that you can most likely gut it out as long as you want it enough. Thats ASSUMING you actually have a problem. From what I have heard, the 53 is NOTORIOUS for making crewman sick. I've never been in one but just from looking at one and talking to some 53 to 60 transition pilots, the 53 has little visibility in the cabin. Plus, if they have the back open, I bet its a huge mindf**k looking out there and seeing the horizon moving.
Feel free to PM me with any concerns. I have some "unofficial" methods for combating airsickness--besides the typical "just take some ginger" or "just relax, its all mental" responses.
I hope I calmed some of your fears. Don't think about it now, deal with it as it comes.
Best of luck.