I first thought the name Vector was good until I realized that the size needs to be known at compile time and not be just set at initialization.
I‘m still +1 on the proposal, although the use in my projects will be pretty limited due to the constraints of such type (mainly the compile time size) but in my opinion, the name needs to reflect this constraint as well as being prominently mentioned in the docs.
I don‘t have a good name myself either, as Swift, like mentioned above, does not have a prefix for "known as compile time". Looking at C++ and not my general displeasure with the Vector, what about ConstVector?