Valveless Pulse Jet

### Optimized Lockwood-Hiller Style Valveless Pulse Jet.
##### Print V9 for best results.



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**Update:** V9 runs well on gasoline with canned air. See the video below for reference. Will slightly pulse without air assist when running on isopropyl alcohol. A small amount of air assist results in decent reciprocation.

I would highly recommend PPE, goggles, gloves, and a respirator if possible. If you use compressed air from an air compressor, it is probably better for you. The terrible smell is very bad to breathe in. Use in a well-ventilated area. Do not run it if you value your arm hair.

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**Video of it running: **

https://youtube.com/shorts/uwhEAB0an6s

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**Tips to get it to run:**
- Spray fuel into the combustion chamber and swirl it around so it fumes. This makes initial ignition easier. Be prepared for a large backfire.
- Blow air into the intake (the smaller hole). Sometimes you may need to blow it out into the exhaust; if there's too much smoke inside, it'll snuff