There exists a flight simulator written by a rather eccentric but clearly intelligent guy, Austin Meyer. It’s called X-Plane, and it’s based on blade element theory which breaks down the plane into lots of small sections and calculates the forces on each section many times a second.
What’s most unusual about it is that it’s pretty much a one man show, and the author is clearly passionate about what is going on in the software. The page most worth a read is probably the page about flying on Mars, since Austin Meyer loaded freely available NASA data about the atmosphere on Mars, the topography, and gravity.
It’s sort of wacky, but you’d be hard pushed to find a computer geek / plane nut site more complete that recounts flying on Mars…