High Speed Mini Valveless Pulse Jet RC Car

[Heliman96]

Is it a good idea to put the propane tank over that hot pipe?

[JOCKATEO]

sounds like muuuuuuuuuuuuuuuuum

[asherudearyou4432]

loud as hell dude

[Maxh0506]

awsome



[Seyeklopz]

mosquitoes must be pulse jet powered

[georgeSaSg]

slow,but clever Good job!

[Aerosplice]

@georgeSaSg Thanks, It was the first version, not terribly fast. The newest one is many times faster (and larger).

[MonkeyWithAWrench]

i have to say, that is one nice little running thermojet! i have had a few issues getting a chinese that small that ive built running on anything other than acetylene! any idea of the frequency its running at?

[Aerosplice]

@MonkeyWithAWrench Thanks! I've measured the frequency of this engine at 360 Hz on Propane. I used acetylene during the early prototyping stages until the engine went full PDE (pulse detonation) and I couldn't hear for 24 hours (even with hearing protection on!) so no more acetylene for me. To get smaller engines to run just use a smaller diameter fuel injector and move it further out of the intake (s) so that the venturi sucks in more air.

[hitmanskilz]

y is it so slow, punch the throttle

[hadabeesago]

That close to the engine would be an advantage cuz the heat would keep the tank from freezing which would affect being able to throttle as high or just affect the throttling. If anything, it could have a reflective heat shield installed and even if its that close it shouldnt be a prob, i never tried what im about to say but this might help better than nothing! Try spray paint the tank with chrome spray paint, might reflect some of the heat

[Aerosplice]

@hadabeesago interesting idea. Lately I've been using aluminum sheet metal to reflect the heat, works great! I'm considering using Mylar for a lighter weight version.

[hadabeesago]

Its not a bomb, propane being that close of course could look dangerouse to the average joe but look at the circumstances, if propane is being let out slow' which it might be since thats a tiny engine! Than it would be dangerouse cuz the tank is allready under pressure and adding heat would just make it worse! But if the jet is sucking allot of gas, it would cause the tank to start freezing, so if thats the case, that the gas to feed the jet is allot and freezing the tank up, than having it

[Aerosplice]

@hadabeesago Exactly. It uses all of the extra pressure produced by the heat and is turned to additional fuel flow. Without recycling the heat, there is a major pressure drop over time, as the fuel begins to freeze.

[hadabeesago]

Nice work

[colkoy1]

soo cute...

[024reredrum]

You can put augmenters on valveless pulse jets right? I wonder if this thing would go faster if it had one.

[1satanloses]

SOOOO ....COOL

[NobbysPcHelp]

its a bomb on wheels!

[fucktopyo]

Its a fucking bomb on weel !!!!!!!

[epideme1]

WOAH THATS DANGEROUS!! you gotta get some distance with that propane cylinder and the heat!

[jhyde0096]

that jet is a bit close to the gas cilinder aint ir???

[1metiz]

That's actually the first video of a valveless pulse-jet strapped on a remore controlled vehicle I've ever seen, good job! btw, are you running that engine on propane?

[Aerosplice]

Thanks! Yeah it's running on Propane.

[fucktopyo]

maby its a yellow map gas tank? propane, acetylen,oxygen? work great in my engine

[Skoda130]

Watch out the propane tank doesn't explode, since it's so close to the red hot engine.

[xjet]

Well done! That thermojet seems to be working pretty well, especially given that they're not the most efficient valveless design.

[Aerosplice]

Thank you Bruce! I'm happy with the design, but I still have improvements to make! For now I'm getting 15-20 minute run times off the 16 OZ propane tank, so not bad.

[LenapeFireTurtle]

man, that tank gives me the heebie jeebies. Other then that...coolness