So from looking at the
Wikipedia article it sounds like a larger Re indicates a larger wing or a higher speed. Does that sound about right?
Addendum: So digging around for information on the P-51 wing, I found this:
http://www.tdmsoftware.com/afd/, which looks really interesting. I'll have to check it out tomorrow.
Addendum to the addendum:
http://www.tdmsoftware.com/majewski/.../IL2design.asp