I Built a Shockwave Jet Engine

3D Models

#engine #3dprinting #jet

[DaremoKamen]

As someone who spent 15 years in the reserves around jet engines, Integza needs to add ear protection to his personal protective equipment. I wasn't careful enough when I was his age, and now have the hearing loss to prove it. Nowadays you can get electronic ear protection that actually lets you hear quieter sounds than normal and only blocks sounds loud enough to damage your ears.

[Backyard.Ballistics]

Hang on a minute, you're actually doing more backyard ballistics than I do!

[mantisman]

thank you for being one of the only YouTubers I can't understand on 2x speed ❤😂 you don't purposely extend your videos by talking slow and I love it bravo sir I applaud you

[sentinel]

You could create multiple combustion cylinders that converge into one exhaust pipe, something that looks similar to a Rolls Royce Derwent jet engine. I would combust them in rotation of a clock that way you will have higher pulse rates of combustion kinda like a radial piston engine.

[PickleBryne]

Instead of electrical valves which would operate at a fixed frequency, you can try mechanical pin-activated valves that are activated when the pressure in the chamber is minimal. Thus, the valves would activate at the exact rate to resonate with the detonation cycles, like in an IC engine.

Edit: Tomatoes are disgusting!

[ThePinskinator]

Technically, this is a rocket engine, since it uses it's own oxidizer. Even cooler than a jet engine!

[randramb]

If you are keeping the older builds, a video I'd love to see would be how they all compare to eachother in a proper and recorded testing session

[superjon]

You could double your gas valve speed by putting two supply valves into the combustion chamber and set up your Arduino code to do an alternating trigger between the two valves.

[JBothell_KFIVQ]

Video Suggestion: Adding some sort of a nozzle to this would be interesting. The pressure is not irrelevant in jet or rocket engines. it is manipulated through forced expansion to increase velocity which does create huge amounts of thrust. perhaps a little known fact: the pressure at the end of a rocket nozzle is very close to zero. Ideally it would be zero but there are issues with being close and creating negative pressure that cause the bell to resonate and explode.

[Zappygunshot]

Great job on wearing safety goggles! The next step would be to wear ear protection because bigger explosions == bigger noises.

[MasterOfYoda]

I wonder if the exhaust can be funneled through a nozzle to further increase the momentum. The mushroom plume does not look particularly efficient.

[JoelCreates]

Impressive tomato blaster, you should load it with a cherry tomato

[mattlester]

You have gained a ton of knowledge, tools, and expertise over the course of these videos. A theme for a future video that I would love, would be to see you tackle some of your earlier failures with with your new knowledge, to see if you can get things working!

[cpoco]

I'd love to see this engine with a nozzle/exhaust on the end. It would be interesting to see the difference between the non nozzled, a wide nozzle and a small nozzle.

[Resonanttheme]

The Shchelkin spiral spring was interesting how it improved the effect. I once tried a tall, curvy or ribbed brass candle holder one time where the "exhaust end" was very wide with not hardly any confinement yet it made a good bang just being misted with methanol and lit from the open narrow end with a Bic lighter. If you try that same trumpet shape with an aluminum baseball bat with the the ends cut off the flame front becomes terribly slow and won't produce a bang. But this narrow wide narrow repeating channel shape accelerates the combustion quite suddenly. If you turn up the volume you can get an idea of the sound from this video entitled Candlestick Holder with Methanol, maybe of interest and only just as an aside or tidbit.

[ProlificInvention]

So much yes! Pulse Detonation Engines are awesome. Thank you for this, on a side note I saw two different designs of air intake for pulse detonation engines that worked very well-one is like a powered air compressor piston assembly that as the piston goes up and down it pushes air and fuel into the exhaust tube (basically the exhaust pipe) and it acts like a backfire tune on a car. The second design utilizes a Tesla valve to allow one way transfer of the air/fuel mixture into the detonation tube.

[blackmoon]

Given everything else engine wise that you’ve created, I’m surprised I haven’t seen a video with a small scale version of the Orion concept rocket. You know, the one that was going to use nuclear warheads and a pusher plate to get into space? I guess consider this an idea for a future video if you haven’t already done something like this?

[bumbdunny]

I just got the chance to see this video, it's pretty cool. One little problem, caterpillars don't emerge from cocoons, they make them, and then emerge as either butterflies or moths. I didn't read the other 4636 comments to see if someone already pointed this out.

[Doktoreq]

For the valves I would go for LPG injectors used in car engine LPG conversions. They should be able to open with required frequency still being relatively cheap.

[stalic]

I just think that due to the engines rapidly heating up, it might be a good idea on the metal versions to add a heat shroud, such as on MG’s. This would help with cooling and allow you to conduct longer tests while reducing the possibility of overheating and issues associated with that. Just seems like it would be a nice quality of life fix.