Maths and Physics:

https://orbital-mechanics.space/intro.html

https://en.wikipedia.org/wiki/Vis-viva_equation

https://spencermortensen.com/articles/bezier-circle/

Craft structure:

root
 |- part_mesh_0
 |   |- part_mesh_1
 |   |- part_mesh_2
 |       |- part_mesh_3
 |- part_def_0
 |   |- part_def_1
 |   |- part_def_2
 |       |- part_def_3