Wow, that's very impressive for a one-man-project. If the author is reading this, can you describe the background to this software, why you started writing it, and how it's been going?
Take a look on slides published by Marek Cel (author) on Scribd.[0]
Beside `mscsim`, there is also `mscsim-cc0` — fully Public Domain version of this flight simulator software kernel.[1]
Also, author developed arcade-style flightsim game for Andorid (and probably for other platforms, as it is pure Qt project).[2,3]
[0] https://www.scribd.com/user/458580892/Marek-Cel
[1] https://github.com/marek-cel/mscsim-cc0