try to remove all the mods installed . Keep the Rafale only and see what happens.
If the sim starts then try to re-install your mods one after one .Then you may see what mod cause conflict with the Rafale.
Working fine in 2.7 OB.
Are you on stable version?
In any case, a lot of people use it in 2.7 with no issue.....
Try to discribe what,s wrong if you want some help..