Proton-4 aka "the Beast" in Orbiter :
I'm coding the .dll so that you only have to add "VERSION 4" in the scenario to have Proton 4 instead of Proton 1/2/3 ; it updates the mass, the mesh, the animations reference points and the launcher interface reference point.
So it works, the only issues now are that 1) the second stage is too short to house that big satellite aft section 2) with 17.000 kg it seems we're a bit short on Dv (that was expected, I mean 5 tons is a huge difference). IMHO it would have made sense to use (and test) a Proton-K second stage on this flight. So I'll try that, I have the feeling that the numbers will "magically" line up.
So maybe we're doing "experimental spaceflight history" there, that would be cool
Also started working on a proper launchpad, using Google Earth for general proportions and dimensions... and of course the Proton first stage model I did earlier, to make sure everything matches :
Note that the rail track gauge (inner track) is 1520 mm, aka the "Russian gauge" (slightly wider than in Western Europe).