500 lbf Regeneratively Cooled IPA/GOX Engine

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Bounding box: 88 × 88 × 186 mm
Engine: 3D Printing B-rep
Parameters: 14
Published: November 10, 2026

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The prompt

I need a 500lb of thrust IPA and GOX/N2O rocket engine designed for Sea Level firing. The engines feed pressure needs to be at 350psi, and the isopropanol alcohol needs to flow through cooling channels in the engines walls before going to the injector. The engines will also be 3D printed

Parameters

Name	Value	Range
Chamber inner diameter	70 mm	40 – 120
Throat diameter	27 mm	15 – 60
Nozzle exit diameter	56 mm	30 – 100
Cylindrical chamber length	70 mm	40 – 160
Converging section length	35 mm	20 – 80
Nozzle diverging length	55 mm	30 – 100
Wall thickness	6 mm	3 – 12
Cooling channel diameter	2.2 mm	1 – 4
Cooling channel turns	6 mm	2 – 14
Injector plate thickness	12 mm	6 – 24
Injector flange diameter	88 mm	70 – 140
Central GOX bore diameter	20 mm	10 – 40
IPA injector orifice diameter	2.4 mm	1.2 – 5
Number of IPA injector orifices	12 mm	4 – 36

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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