Hi Xarun and Sung! I see that you have made headways!
I have a couple of questions for you.
What kind of simulator do you have in mind? One with tanks from the 50s and 60s exclusively? Will you model/create maps of various places( Europe, Middle East, Africa etc)?
How do you plan to deal with the tough part:
Ballistics
Damage effects
Rate of fire and the various type of ammo
AI( any infantry planned ?Will the crews be able to leave the vehicle etc?
Good start I'll try your firing demo
Cheers and best of luck!