ARS

I saw on the forum that you talked about the Squad (stock)  and the opt, i'm not sure to have find the good one (and if there are some update to them)?

Could I ask you some links to be sure? :s

OK ! I find all the mod that it would need ! The CKAN is not really going well on this one... KerbalX says that the OPT mod is not available via CKAN, and when I use CKAN, it found only the OPT mod... And it bugs and load the game... Weird (with extra B9 parts and some random mods that are useless for your craft...).

So I download manualy the MK2 and MK3 expansion pack, the OPT_Legacy and the OPT mods (links of the OPT mod is given by the meta-data file download). Just a little bug with the MK-2/3 expension pack (the InterstellarFuelSwitch is recognized like a 1.3 mod so it's unsupported by the 1.4 )

So here is the link, if anyone is interrested, to get a clean Archangel Install on the 1.4.x

OPT (Space Plane 1.3.0) https://spacedock.info/mod/1028/OPT Space Plane

OPT_Legacy (Space Plane Parts 1.4.2) : https://spacedock.info/mod/711/Orbit Portal Technology [OPT] Spaceplane Parts

MK2 (Stockalike Expension 1.4.3): https://spacedock.info/mod/473/Mk2 Stockalike Expansion

MK3 (Stockalike Expension 1.4.3) : https://spacedock.info/mod/663/Mk3 Stockalike Expansion

I didn't already get how to orbit your Archangel, but for sure, it's a fu***g beautifull spacecraft that you made ! The sound when it takes air ! And also, this made me discover the 1.4.2 and the mod you're using for it. A whole new world to approach the lift off/fuel management

Glad that you found all the  mods

The ascent profile for SSTO mode is a bit difficult, since with the nerfed engine and limited fuel, the ascent angle is quite narrow, it must not be too sharp (quickly losing engine power) or too shallow (insufficient fuel)

Oh, one more thing. If you're  having trouble looking for mods, some mods are not listed in CKAN, particularly the non-part mods (CKAN does make it easy to install though)