How to BP Edit in Spaceflight Simulator
BP editing is how players get the parts the build menu refuses to make: engines at 45 degrees, needle-thin tanks, mirrored legs, engines that don't overheat. Every rocket you save is stored as a text file listing each part's position, rotation and size, and the game loads whatever that file says. Editing it by hand breaks easily and the folder is locked on newer Android versions, so the practical route is the free browser-based BP Editor.