The effects were made by Rui Huang and are commercially available.
Sci-Fi Artist and Asset Creator Rui Huang has recently released a brand-new asset pack that will help you take your digital jet engines to a whole new level. Meet Thruster pack, a small collection of detailed and realistic-looking thruster VFX made by Rui using Blender and EmberGen, JangaFX's fluid simulation tool for creating fire, smoke, and explosions in real-time. According to the creator, the pack contains four VDB-based thruster effects with the loop sequence and the 80 MB shader-based thruster. The effects can be used for both personal and even commercial projects if the source is credited.