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- เผยแพร่เมื่อ 6 มี.ค. 2020
- 3D printed swirl rocket engine injector. It’s powered by 91% isopropyl alcohol and pressurized air. I’m still working out the exact mixture and flow rates I want in order to optimize the burn.
Printer settings:
.4 mm nozzle
.1 mm layer height
60 mm/s print speed
100% infill
105% flow (to help get a good seal)
NO STL FILES, this thing is too simple and too dangerous. I don’t feel comfortable releasing files because it could easily hurt someone who isn’t careful.
If you want to hear more about the design process, here is an instructable I wrote: www.instructables.com/id/Rock... - บันเทิง
Great video! Do you think you can share the stl file ?
I’ve been torn over that actually. Do you release files that could be potentially dangerous? I’m a little worried about liability haha
@@Sciencish I meant, can you share them with me ahahahah
I dont care for the rest of the world
But I do share all of my files
I’ll email you on your business email!
@@Sciencish Gratzie!
Oh while you two are living in lavish luxury us plebs have to struggle to design one on our own... *cough* thingiverse *cough*
When it gets cold enough outside, try using this with cold water instead of fuel and see if it can work like a snow machine.
I don't know what i was expecting from a tiny little thing but that MASSIVE FIREBALL was not it! This is incredible!
It would be cool if there was a Mandalorian gauntlet with that.
You could cast a pretty good bronze nozzle from your PETG model. A finishing pass and good to go. Thinking ahead when trying to goto infinity.
I am interested, how you would replicate the fine channels and inner structure in bronze or any other cast metal?
If you have a proper way to cast really fine details, I would be glad to hear it :D
@@Chris-uu2td Like jewelry casting, need a vacuum setup.
Loving the video man! Can wait to see the rest of the project!
My new favorite channel. Thanks for the content.
man this is crazy, works like a charm, congratulations
This is so satisfying to watch and to listen to.
This is the kind of content which made TH-cam. Bravo.
Great video, dude! Keep up the good work but try not to start any bush fires. ~ A concerned Australian
dude you make some cool stuff
Please make the next episode, i loved the video!
I am still working on it! That said it’s taken a back seat during the social distancing order. I want to use isopropyl/rubbing alcohol for fuel because I thought it would be cool to use mostly household stuff, but rubbing alcohol has been hard to come by lately
Sweet swirl injector!
Thanks! I poked around your channel, you have some very cool robots! I found the infinite Z axis 3D printer especially fascinating
@@Sciencish thanks a lot dude, youv'e made some really cool stuff too, look forward to seeing more!
You should increase the fuel pressure by making a neck that is narrow so that it make it a relevant engine
Uncle Rob Approves!
This was awesome
thank u so much for the knowlage
Very cool. Very smart.
Ay thats pretty cool nice video
Great design! It obviously works really well. I have something I would love to try with it that isn't rocket related. I want to try silvering glass with a two part spray system and thought the thorough mixing would create a really even end result. If you wouldn't mind sharing for that use only I'd really appreciate it and you can find my e-mail on my channel (not a real channel, just share some project videos, but my email is there).
Thanks for sharing your results either way!
I am just wondering as a licensed light oil technician, did you know the whole idea behind oil burners is complete combustion and they use a flame tube and low pressure air from a fan with high pressure fuel atomized from a pump. Readily available parts and swirl cone at the end of the flame tube. Mach diamonds are a result of speed and that is the result F=ma so pretty much high speed fan or lots of pressurized fuel.
The reason why its so dangerous is because your giving joker a lesson on how build on of batman's greatest weapon
Do you have the SolidWorks file? I'm working on a AM project for school and would love to see how this was designed. I understand the safety concerns, but I assure you I will not be printing it. I only need to design the part.
I were thinking about a rocketstove. Try to build one 😉
nice video, how much fuel does it consume?
Felt in love with your video HAHA
I was wondering one ore two things.
The first one is the pression you used for the air flow.
And the second one is the flow of isopropyl alcohol involved in this result.
I have in mind making tiny rocket engine, but before really getting into it, I'd like to have some scales in mind.
Thanks for sharing your work !
That's a snow thrower nozzle👀! No seriously, use water and inject cold air when it is cold outside, and you will see. This nozzle makes the same mist as thous huge snow thrower in the Ski park
Make them with ceramic resin or metal 3d printers or so.
So you can make a actual rocket
This seems like it would be an incredible application for water misting in indoor farms. Using the bernouli principle to to distribute a fluid via low pressure rather than using high-pressure fluid feels like a much more energy efficient strategy. But I have no numbers to back that up. I would just imagine it would take less energy to maintain the system with a tank of high pressure air than continually pumping the fluid itself to maintain pressure in the lines.
Now just a 3d printed turbopump and your set
Aircraft Engine mechanic here. I would like to tell you so much about nozzels, ignition and burning chambers. But this would be too much for a comment. Try research for simplex and duplex nozzels. They have an near optimal vaporasition and spreading the flame long and conzentratet
I know this is old but, why not 3d print molds of these nozzles and cast them in metal or a high temp material?
Is it intentded to work in an hybrid rocket spreading oxidizer? Could it work with gas such as N2O?
The goal is to get it to work with a liquid fuel and just compressed air, but with some adjustments it could probably work for any bipropellant rocket
How do you pressurize the fuel?
Just compressed air right now, but that won't due in the future since it means I'm mixing fuel and oxidizer (even if its greatly diluted by nitrogen) under pressure. An inert gas would be better but obviously more expensive than using my compressor which is free.
Awesome injector. I think it runs a bit too fuel rich.
Okay I’ll sub.
Hackaday brought me here
Cool! I think that's the first time someone has written anything about a video of mine
What fuel did you use?
How did you pump the fuel?
This Would Be A Sick Flame Thrower or Something To Kill The Bugs In My House With xD
What fuel you used
any way you could share the 3d file??
Hey my school's helping me out with the engine construction so please relase the files☺☺
I would love to purchase one of those please. Let me know the price and how to pay.
He has a link in his discription follow it
bro, please give me the design plan or the file itself, please ive been looking for this all over with no luck until this, please give me the files, i have a 3d printer
Can I get the .stl files? I would love to make one
I couldnt tell, were you using autodesk or SW?
Solidworks, but I’ve since ran out of the student license so I’m in fusion 360 now
How much thrust it it producing?
almost nothing right now since it's just the injector, but once i design a de Laval nozzle around that fire ball it should produce some thrust.
lucky bird, hilarious
Are you still planning on printing a nozzle? I would really like the project
I actually have already printed one, and tested it this morning. It had some issues igniting that I’m going to try to figure out and fix really quick and try again this week. I want it to at least explode if not fiction, but to just fail to ignite is really boring haha
@@Sciencish so I can await a new upcoming video about the 3d printed rocket? is there also an website for the progress of the nozzle?
Yes hopefully the next video will be done soon, I plan to try it again tomorrow morning with a new ignition system. R/rocketry on Reddit is where I post the most updates, followed by twitter, but those are few and far between
Hey, is there an stl file that is available?
Can make a small water circuit for cooling? Plastic will not heat up too much and will melt. Or cooling with fuel, but it is not so safe.
I’ve thought about it, since it would be really easy to print a cooling jacket and nozzle in one piece. The problem is the thermal conductivity of PETG is less than 1 W/m•K, which is a lot lower than conventional materials like steel (50-ish W/m•K) and copper (380ish W/m•K). This just means that the inside surface of the plastic would almost definitely already be melting before it could be effectively cooled by the cooling fluid.
@@Sciencish How fast does plastic melt? And will there be a continuation of this topic? There will be a liquid rocket engine
:D?
@@Sciencish If I apologize for the grammar, google translator all things
I'm not sure yet but it'll melt really fast, It will only operate for a second or two at most. I will keep working on this and post a video of the plastic rocket even if it doesn't work! Also your grammar is fine!
@@Sciencish Successful development!)
I thought shock diamonds was a signal of combustion deficiency 🤔
Maybe I misunderstood the other guy that met Elon and the rocket lab CEO.
They are at the very least a sign that a nozzle isn’t well matched to the atmosphere, which is not as efficient as a matched nozzle. But they are a good indication that the flow is supersonic for my needs, and most rockets generate them since they go through different atmospheric conditions as they fly. Mine will generate them bc it’ll be poorly designed and cheaply made, that’s if it doesn’t immediately explode or melt haha
Sciencish I see, thank you for the clarification, those diamond shocks look so beautiful, I hope you can succeed.
Copenhagen Suborbital is trying with 3d print but in metal. They saw some slightly improvements in performance vs a machined one.
If you will do this again, please, for your safe, put a Flashback Arrestor in both lines (fuel and oxygen).
Hey can I have the file please we are trying to build a rocket engine for a science fair
Sike no safety glasses
Can i please have the file, im building a rocket and really need something to compare. Greetings, casper.
How much pressure do you have?
I can’t remember exactly offhand, I think it was something like 15-30 psi in the fuel tanks, maybe 80 in the air compressor just because it made cooler louder flames haha. When it’s in an actual engine it’ll be quite a bit higher, and I’ll have to pressurize the fuel tank with an inert gas too not just air.
why does the engine fire not go into the fuel tank?
Because the fuel line has no oxygen. The worst that could happen is the injector could explode, but it looks like the flowrate is faster than the combustion and it can't make it's way back in to the injector.
You will definitely need high temperature metals and liquid oxygen, and a pump (for this size, you would be best off with an electric pump, since getting a turbo pump to work is very complicated (such as in needing cryogenic methane)) to prevent the exhaust from going back into the fuel tanks as it compresses before leaving.
no stl? Fine, i'll do it myself
Get yourself some strontium chloride and mix in 0,1% and make a giant red torch :)
0:10 you must make some tame stuff.
Stl😭😭😭🥺🥺🥺🥺🥺🥺
the way you count down drives me nuts lol. you are pressing the button at about -0.5 seconds because you push it after you say "zero"