BR-9 50 mm Diameter Rocket

thingiverse

This marks my ninth iteration of 3D printed model rockets. Compared to the BR-7 and (unpublished) BR-8, this rocket accommodates a rocket motor measuring 29 mm wide by 128 mm long - the largest size available from Estes rockets. The rocket is designed with adaptors that enable the use of motors as small as D-11 (24x70 mm), while testing has consistently demonstrated its compatibility with E-16 and F-15 motors (29x114 mm). The rocket's components are engineered to be screw-together parts, measuring 50 mm in diameter, requiring no adhesive. For optimal printing results, it is recommended that most parts be printed at 20% infill and a wall thickness of 0.4 mm; however, sub-components such as screws, couplings ends, and inner motor holders should be printed with 100% infill. To facilitate the printing of various sub-components, I utilize .3mf files in conjunction with Cura software, generating a final .gcode for my Ender-3 printer. The original Rhino models used to create these parts are also included for reference. A single .stl version of one part is provided; however, I prefer using .3mf files as they offer superior results.