I made a Solid Rocket Engine!
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- เผยแพร่เมื่อ 15 มิ.ย. 2024
- Thank you so much for watching!
For your next project, make sure to head over to PCB Way: pcbway.com/g/js5px0
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Music: Soul & Mind - E's Jammy Jam
00:00 Intro
00:24 Types of Rocket Engines
01:37 Design
02:31 Sponsorship
03:32 First Test Fire
06:50 Second Test Fire
09:01 Conclusion
10:36 Outro
This is a re-upload. - วิทยาศาสตร์และเทคโนโลยี
Huge thanks to youtube.com/@PCBWay for sponsoring this video!
Give them a visit with this link: pcbway.com/g/js5px0
I'm guessing you watched TECH INGREDIENTS ... yeah..? Bc he worked on literally ALL of these topics ~14 months ago (on YT) ... and as a Professor of Physics & Engineering, he explains things PERFECTLY.
I did watch his videos and I think they are good, but my main source of inspiration are Charlie Garcia, Joe Barnard and others who do this as the main thing on their channels!@@trumanhw
how can such a well made and interesting video only have 17 likes?
I am really happy that you enjoyed my video!
Good thing takes time
Because it had 17 views at that time.
Now 1.7 k likes
Maybe u mean 1.7k like right?
Great video, you truly deserves more subs. And it’s good to see sponsors like PCBway sponsoring small channels, never expected that.
Me neither. I was very surprised when I saw that they wanted to sponsor me. I didn't expect to get to this point this early with my channel. Thanks!
KNSB stands for potassium nitrate SorBitol, like KNSU stands for potassium nitrate sucrose. Great video!
Oops... Thanks!
I'm going to suggest this based on the assumption that your propellent mold is either metallic or ceramic, so take this with a grain of sucrose.
Have a removable cap on one end with your center cylinder and place the mold on top of it sealing off one end. Fill the container with the unmelted grains mixed thoroughly together. If you can acquire some heater bands that fit the metal tube, and a thermistor (like from a 3D printer hot end), you can use them with a temp controller setup to get the the compound to a fluid temp and melt in the tube. Let it cool and repeat until the motor is the correct size and shape. Once cooled, remove the cap and push it out. This will help prevent spills and be a bit safer overall. Making several of these wired together would also be fairly effective and efficient for making motors in bulk once you have the recipe correct.
Thanks for the advice, but I already solved the pouring problem and I switched back to sugar.
Suggest you either use an electric ignition or learn to make long, fast fuse, so you can start from a safe distance and your safety doesn't depend on running. I don't know if anyone does this, but I have found that a bit of carbon fiber, either tow or a splinter of the pre-cured stuff that's been sanded, makes a nice resistive element. The latter is a bit easier to work with. Don't try to wrap tow around a wire. If it's anything like mine, the sharp bend will snap it. You can't solder to it, or I can't, anyway. However, you can wrap wire around it for a connection. I have witnessed what happens when carbon fiber composite shorts out high voltage lines. In places, the epoxy just disappeared, but the carbon was more or less intact. So you can hit it with a lot of current and get a lot of heat. Put some pyrolant on the carbon anyway, though. A quarter inch between the wires attached to it is probably long enough with carbon. It's more resistive than nichrome.
Of course, you can make perfectly good electric ignitions in other ways. One of the pitfalls, though, is that some resistive elements, if hit with too much current, will fail before they ignite anything. For instance, I was experimenting with small resistors for ignition. Some of them would just stop conducting at all if I used a 3S lipo for current, but lasted long enough to light things when using a 9 volt alkaline cell.
You are my motivation for going into aerospace engineering college! After 4 months or something like that from now probably i will be into college and i hope its aerospace college ( i will update this comment once i get accepted )
To be honest with you, I haven't even finished high school yet. I can't express in words how much this means to me, being a random guy inspiring others! I hope you will succeed and I wish you all the best! I will wait for the update!
I suggest replacing the rubber seals with high-temperature silicone. Even up to 400 degrees Celsius it will be better than rubber. The second thing - fuel grain is prepared carefully at home. Mixing ingredients, controlling temperature, density, tamping in the form. These are all trivialities, but they have a huge impact on the quality of the fuel grain and its stable combustion instead of explosion.
Well done,love it
I genuinely didn´t know PCB Way offered CNC machining! Will use it for my own rocket motor project now
two things. you must dry the mixture very well, at least a couple of days in a container with a desiccant. second thing, I didn't see how you started the engine, but you have to make sure you light it from the head (not near the nozzle) and the best way is to use an electric match; then I personally use to dirty the wall of the core with a little bit of flash powder (that of firecrackers) to quickly light the entire internal surface
Third... it seems that your compound lacks oxidant, increase the proportion of kno3
I fixed the propellant issue and I'm about to try out the head end ignition. I didn't know you can use flash powder to do that, thanks!
very nice
wow! subscribed! cheers from Italy!
Nice job!! :) I found it would perform better it you apply a e-match to ignite or just light your perpellant from very bottom( or the high speed gas would slow the burning rate), hope you have great result in your next version
keep it up, man!
You will make videos about liquid fuel rocket specifically small. Love from Bangladesh 🇧🇩
Your channel is underrated i wish you reach more audience!
I would like to see a V2 made from your hand
Well made video!
Nice 😊
The solids left in the motor suggest you need more oxidizer. This will lead to a less viscous mixture making casting the grains more difficult but that's the trade-off. Good effort though.
I actually dropped the sorbitol idea. Last weekend I tested the motor again with sugar and it produced 130N of thrust! 3 times the expected amount. This difference comes from the fact that I didn't take into account that the propellant burns faster under pressure. I will cover these things in a future video. Thanks for the support!
Your fuel is burning from the top to the bottom. Try getting an electric igniter and push it all the way inside. That way the fuel burns from the bottom to the top, igniting more fuel on its way to the nozzle, therefore creating a higher pressure inside and greater thrust.
I'm not sure about the power drill to create the hole, my rockets turned out to spin because the hole wasn't perfectly parallel to the casing.
Also try experimenting with different ratios between fuel and oxidizer.
Love your nozzle btw
Great video 👍
Thanks! I ditched the sorbitol and the drill idea, now I found a way to make holes in the grains. I would try making electric ignition, but every time I tried making an igniter I failed. I taught of making a really fast burning pyro igniter from the propellant in it's powder form with iron oxide mixed in, and have solidified propellant at both ends, witch burns slower. This igniter would basically be a straw with powdered propellant in it.
Sorbitol has about the same amount of energy, but for some reason it burns about twice as slowly which makes for an engine with less thrust. If your goal is thrust you may also consider adding some iron oxide powder to the mix.
or a star grain lol
Keep it up 🎉
nice video
Sorbitol mixture is supposed to be cured so after casting seal it in a container for a day and then fire it
Also use a little corn syrup about 10% of the mixture
Thanks, I didn't know that!
I did it. Yet the mixture become liquidy and was unable to fire
awesome!!!
Bravo.....exaust manifold oring.....high temp......cheers
Add an outwards dent to your pan to act as a pouring spout. I hit mine with a flat head screw driver and a hammer 😂
subscribed!!!
Hello bro I need to connect with you
I am doing small solid propellant rocket as a project in my college
Need your help
Love the video. Amazing engineering. But I was distracted the entire video by the music... It what H3H3 Ethan Klein used on the bell pepper story. If you know you know...
The music is from the game "Getting Over It". It is called "Soul and mind". Thanks for the support!
Great video! Do you know how can I get the RPA software you were using?
Thanks! This is the official RPA website: www.rocket-propulsion.com/index.htm
👍
Nice video! Maybe try to ignite the propellant through the nozzle but all the way up close to the forward closure. This way thev exaust gas will ignite the propellant grains on its way down. Pressure will increase faster and burn rate will be higher...
That is what I am going to try to do in the next video. I am working on a non-electric igniter that could do that, because I tried electric ignition in the past, but I wasn't able to get any good or reliable results. Thanks for the support!
Great - looking forward to seeing the results.😊
Very interesting video, nice work!
If youre interested in expanding your TH-cam audience, I would recommend speaking with a bit more confidence, and a slight bit faster. It makes the video more engaging to watch.
Aside from that, It also might be worth investing in or building a small scale horizontal or upright test stand, as you may get more effective propellant burns in those orientations.
Can you leave a cad file or say how you did the "boring part"? I'm very im very interested in your design
I will make a design tutorial in the future if you want!
@@RUD_Technologiescielos eso sería genial soy nuevo en estos temas nosé casi absolutamente nada por favor❤
do you set fires with a sparkler? this leads to end combustion
I know. I am still working on that issue.
@@RUD_Technologies а ты случаем не из СНГ?
@@user-zc2gh8pr7k No
You could add about .5 - 1 % FeO2 (Red iron oxide powder) to the fuel mix which makes it burn hotter and faster.
I tried that, but it burns too fast. I solved the propellant issues since then anyway. Thanks though!
I have a Video of 3 test the last one being 1% by weight red Iron oxide and it was far more efficient@@RUD_Technologies
I know it's better, I've used it before, but I don't know if the engine can take the extra pressure.
I built a thrust test stand with a strain gauge and an Arduino to test my engines. But I'm only building sugar rockets with Sorbitol 35%, Potassium Nitrate 65% and about .5 % red iron oxide in PVC sprinkler pipe. Not as hot or fast burning as regular sugar. I've never had one blow up, but on occasion I do get KATO's usually when the mix isn't packed evenly . I'm now lining my PVC pipe with Oak tag materials from office file folders. to prevent heat damage and prevent heat distortion to the
PVC pipes. I've even soaked the Oak tag in a concentrated solution of Sodium Bicarbonate and water then thoroughly dried to keep it from burning. I don't see much difference in the burn rate from the Oaktage, probably because all the combustion has occured before it burns to the outside wall of the Piper and the Oak tag. But sometimes I can re-use the PVC pipes@@RUD_Technologies
@@johnkemas7344 So if I understand that correctly your using oaktage for a liner for your grains?
Sounds like a great alternative to ordering cardboard tubes if it works well. How do you connect the two ends of the paper to form a tube?
Cool as hell, but I am afraid youtube may take it down soon...
This is not a tutorial on how to make a rocket, so there's no reason to take it down. I am happy that you enjoyed the video though!
unde ai gasit azotat de potasiu?
De pe internet. E folosit ca ingrasamant natural.
@@RUD_Technologiesmersi
What program ?
I made a rocket nozzle calculator 2 videos ago: th-cam.com/video/R3FKnyLWGb0/w-d-xo.html
You can download the text file from here: sites.google.com/view/rudcalculators/pagina-de-pornire?pli=1
*It's a C++ program*
Why not Potassium Nitrate and sugar?
Sugar and KNO3 is harder to cast. I went back to sugar recently though.
Now make a rocket and send ppl to space
Ok! ))
me too except mine has no exause hole (I'm kidding mr fbi agent)
))
dwg??
I am not sharing the drawings.
@@RUD_Technologies 😂 it’s a tube with five holes
@@andr3742 It's a tube with five holes that stores 30 bar gas at 1800 K and shoots supersonic gas out one end. If it were a less dangerous tube, I might have shared the drawings. And it actually has 16 holes; 17 if you include the nozzle.
very nice
Also, remove some of the fuel, and add a couple of milligrams of iron oxide powder [just dry rust] and some sulfur [even crunched up match heads will work, so long as they are very finely divided, and not clumps.
One of the easiest things to make high powered rockets from is emergency highway/railroad flares.
You just wash them in mildly hot water [not hot enough to boil though, because that will melt the sulfur, which will mess it up], sieve out the coarse sawdust, then use a super fine coffee strainer to strain out the sulfur.
Then you can run a genuine coffee filter to get the oxidizer.
Let the sulfur dry gradually without making it hot [best in a sealed container with some calcium chloride in a smaller container next to it to soak up all the water] until it is fine and dry.
Let the oxidizer mixture also dry slowly [again, you can encase it in a container with another container of CaCl2 inside to soak up the water] and now you will have a lot of energetic oxidizer [potassium chlorate and strontium nitrate] to use.
Take this and grind it with the sugar as the ratios need to be re-mixed properly, with some solvent [such as anhydrous denatured alcohol, acetone, or MEK] to ensure good safe, thorough mixing, and then pour this all into a wax lined paper tube, warm the paper tube until it is about 155C and then let it sit and cool.
You will know it has melted enough when the material begins to liquefy at the top.
This is best done in an oven with ensured temperature control, but a stove pipe and a hair dryer could do the job in a bind.
Just likely it would be best to put some fiberglass insulation around the stove pipe to keep the temperature high enough.
Your propellant sounds interesting, but the process of making it is too complex and expensive for this project. I already solved the combustion problem a weekend ago. I went back to sugar, this time I got great looking grains and the motor generated 130N of thrust. 3 times the expected value. I would be interested in your propellant though for use in high performance rocket motors or in rocket igniters. Thanks for the tip anyways!
@@RUD_Technologies WAIT!!!
WHAT???
MATCHES AND RUST ARE TOO EXPENSIVE???
ARE YOU KIDDING ME!!! \>0.0
nice video