I used FreeCad, Gimp, Blender and Krita to do this one.
First FreeCad for modeling (it would habe been easier to do it in blender, except maybe the spacecraft wings, but I wanted to learn FreeCad).
Texture preparation in Gimp (especially for generating normal maps).
Then texturing, lighting, rendering (cycles, 120 samples) and compositing in Blender.
Finally a bit of post treatment in Krita and Gmic.