the files in that post are on (or were on) someones google drive. and they are either privated or deleted.
for the canopies transparencies. see the alpha for that material. if you are using a tga for color and/or opacity for the canopy you need to use the ~ALPHA prefix on the material name
yes if there is a wing inside a fuselage. the wing still makes lift. the fuse does not obstruct the wing.
so the entire wing area calculated (visible and hidden) creates lift and drag.
hinge moment being the torque required to deflect the control surface into the airstream. yes rf ignores it.
RF assumes the servo torque is "infinite" and uses the blowback factor to simulate over stressed servos
spool time. no idea what the ai is on about, seems to be talking about helis and adding a deadbands
if you are looking for the slugish transitions off idle for (most) jet engines. I can suggest some settings for servo speeds and curves
I designed one a few years ago
https://forums.realflight.com/index.php?resources/sky-terror-mk-ii_ea.27961/
and would recommend this av which is much closer to the video below
https://forums.realflight.com/index.php?resources/sky-terror-mk-ii-3d_av.29159/
me thrashing on an unpost variant
yes it has a free for all pvp (player vs player) combat mode on multplayer.
no it does not have pve (player vs computer) combat.
no it does not have a mode like DCS or IL-2
in the old days (10 years agp) the .kex where handled by a plugin to 3dsmax 2012 and that might have something to do with it. the importing to 3dsmax 2012 might have had some pay wall where exporting was "free" or something. max 2013 was very different from 2012 and we lost a huge number of...
Once the model is in a rf kex there is no way to convert it back in to a .fbx file. You could try contacting the original creator they might still have the old files. Likely 3dsmax files maybe wings3d. But I doubt they are contactable as they have not been online here in 7 years. Or if they even...