Model Convergent-Divergent Nozzle
thingiverse
Model of a de Lavel Convergent-Divergent Rocket Nozzle. This could be the starting point of a bottle-rocket, if combined with the appropriate mounting points and a valve, and scaled up. Instructions Printed at 0.3 mm -- the OpenSCAD model could be higher resolution, but I didn't want to wait an hour for compilation... Update: BRL-CAD python script included -- the Hi-Res version (and raytrace) is built off of that, for speed reasons.
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