What would happen if...

[Troy T]

You were to add oxygen to your propane fuel when you feed it into the pulse jet?

[Troy T]

Would it increase in efficiency or blow up?

[Johansson]

Would it increase in efficiency or blow up?

My guess is that something would melt.

[serverlan]

You could try using Nitrous Oxide in stead of straight O2
Standard rev-head technology

[Troy T]

So lets say I found the correct ration of propane to oxygen, then theoretically couldn't this engine work in a zero atmosphere environment such as space? The gases inside would obviously burn a lot hotter because of the oxygen, probably hot enough to melt the engine. So is there any technology out there such as water cooling systems for pulse jets? I mean whats the point of having all of that heat if all you want is thrust?

[serverlan]

Try injecting some water as well internally. The heat should turn it to steam
improving the volumetric change and cooling the engine a little.

Look up "chemical intercooling" in rev-head space.
They injecta mix of methanol and water.

[serverlan]

You wouldn't need an air intake then, so the entire engine design would change to become a rocket, rather than a jet.

[Troy T]

so I know that they have solid fuel and liquid fuel rockets, but I have never heard of a rocket that uses vaporous gasses. does such a thing even exist or did I just invent a new rocket?

[serverlan]

Sorry, but anything space-going uses hydrogen oxygen mix as a rocket - e.g. Saturn 5, Shuttle, etc.

[Troy T]

oh thats cool. I didn't know that