Does anyone know what this does?

I forgot to mention, it was in the new file library a couple of days ago. No SR-71 fans out there?

I don't have it, but I would have thought "what it does" should be obvious from the title - improve on the flight dynamics of the SR-71.Whether they are substantially improved, I couldn't say. There are very few real SR-71 pilots who could verify the performance !Cheers,Alastair