Pulse Jet Thermojet – Printable Model

This is a 3D-printable model of a simple valveless pulse jet engine (Thermojet) I designed in Onshape, inspired by the classic WWII "buzz bomb" style engines.

The model is available in two versions:

• Hollow inside –  ready for experiments or mock-ups.
• Solid version – for visualizing.

I printed a small version to test it, and while it didn’t fully start, it did produce small explosions with fuel and air – so it's not just a toy 🙂
With the right size, fuel, and ignition, it might actually work – or at least buzz a bit!

Use at your own risk – this is an experimental design and not meant for actual thrust use without serious testing.