Basically, you teleport a maximum of 5 particals into one pixel using commands. If you do it with some sort of flammable or explosive, like bcol, it can make the rocket last longer. Remember: don't use more than 5 pixels in one or you'll create a black hole.
actually one of the most realist rocket engines on tpt
thanks. but what does that mean?
Suggestion: try layering your elements.