Parametric Rocket Nozzle

thingiverse

A Parametric Convergent-Divergent Nozzle, or De Laval nozzle, has been modeled with two types: a simple conic nozzle extension and a more efficient parabolic bell extension using a Bezier curve. The creator initially modeled the conic type and later added correct combustion chamber and throat supports for improved printed strength. However, slicing is more complex and error-prone. Updates include Bill Waters' assistance in correcting the bell modeling, an intake suitable for steam or pressurized gas experimentation, and a newer version based on the geometry of the bell, which calculates proper exit radius from throat radius and expansion ratio. The conic nozzle has three main parameters: combustion chamber radius, throat radius, and exit nozzle radius; two angles - divergent and convergent nozzle cone angles. The parabolic bell is more complex but primarily driven by the same parameters. The creator has provided thorough comments in the file for better understanding; any unclear variable can be clarified with a query. Contributions are welcome at the GitHub repository: https://github.com/Buback/ParametricDeLavalModel.