Oh dang, I got a RU-vid alert and saw Integza but thought “Great work” was a weird video title haha. Thank you! love your videos, and just watched your aerospike video, that ceramic resin is some crazy stuff!
Actualy, he almost made a pulse jet, sooo... yeah... Well what i'm saying is: when he started the fire in the bottle, at the end it started pulsing, but in low frequency. Integza, i think you too my friend mey have stolen the idea from this guy!
Exactly! I just found this channel, and I am in love. It's also pretty inspiring!
3 года назад
Keep the failures in. We sometimes learn more from how we fail than how we succeed. It also shows that failing is perfectly ok, since it means you started with the experimentation.
I was so excited to wait for this video that 5 months ago i managed to make shock diamonds with the same system as you. I was trying different nozzles to put in a bottle to get maximum thrust,I even made an aerospike, and in the end what turned out best was to make a hole in the cap with a scissor. 🤣🤣
I tried that too, but for some reason absolutely no exhaust was visible, so I couldn’t see if there were shock diamonds. But it did seem to output a similar amount of energy
This was one of those videos that I started out thinking, "okay yeah I know how that works" and then quickly realized I know relatively nothing. Very well done though, clear, concise, informative, quality is good.
6:00 "how do pros take gloves off" - Start by pinching the base, or the cuff, of the glove and pull directly toward the fingers of the hand you're currently degloving (don't Google that term btw), the glove should now be off and turned inside-out, scrunch it up in the palm of your still gloved hand, then put a finger under the cuff of set glove and pull like you did last time, you should now have an inside-out glove with another glove inside it and, if everything went smoothly, without having contaminated anything.
I gotta say ... I am an aeronautical engineering student and I always get amazed at these type of videos. I appreciate how curious you are about these things and how you are finding enjoyment in the curiosity as well
I didn't think shock diamonds could be observed that that small-scale but you proved my assumptions wrong very impressive I like what you do keep doing it
They're actually surprisingly easy to produce on a small scale, just hard to observe because they're either short-lived, or not luminous. Black powder model rocket engines (like Estes or similar) produce them, and they can also be seen in the output from a can of air duster, or a compressed air hose with a blowgun attachment. Those last two are a lot less spectacular than rocket exhaust though, because there's no glow from combustion. You can usually only see them against a high-contrast background where the refraction effects of the changing gas density are made more apparent.
Hey, its a bit late, but the 4th nozzle its not technically an aerospike, since the "spike" part does not portrude beyond the external ring, what you have is a circular bell nozzle.
Also came looking for carbon diamonds and realized after about a minute that rockets do not in fact shock carbon materials into diamonds. But if 2020 has taught me anything it's that you can't skip forward in life, so I got some munchies and watched the whole vid. Good non-carbon diamond content.
Nice job explaining things in an understandable way. The way you explained things, although simplified, is much easier to follow than the CFD and thermodynamics that are usually used to explain how a rocket works (at least if you are in engineering school). Keep up the good work!
This is great, you deserve more subscribers! I can clearly tell a lot of effort went into this. Maybe the proper rocket didn't work because you'd need a better ignition source, or because the combustion looses to much heat in such a small engine.
Next step, how to introduce pressurized alcohol and oxidizer into the bottle (combustion chamber) at a rate that keeps the pressure above critical for continued combustion and thrust, but below that for a rapid unplanned disassembly event. From there, designing a nozzle and combustion chamber that can take the heat of continued combustion. I think your "pressurizing fuel with air" problem would be most simply solved by a can of OC spray. Or rather the mechanism by which the OC is pressurized. Basically, the OC liquid is in a bag inside the pressure vessel of the can. It has a valve and tube attached to the bag such when the valve is opened the pressure of the gas in the pressure vessel forces the liquid through the valve and out of the pressure vessel. The pressurizing liquid and the OC (fuel, in your case) would never come into contact and thus the chance of ignition is reduced quite a lot. That has your fuel pressurized. In theory, you could pressurize your fuel and oxidizer (assuming both are liquid) at the same time, by having two bags in the same pressure vessel (with the proper volumetric ratio). Designing for the proper flow rate shouldn't be that hard.
Awesome! I made two and filled them with expanding foam, one bulged too much so I just started using it to store tools in haha. The other I hollowed out so I had a ridged foam helmet
The color of the flame comes from the sodium and carbon of the saw dust. I think the flame can be colored more easily by putting salt into the bottle. It might make more intense color and make the diamonds more visible. If used different salts,different colors will accor.
that's why they've multiple stages however, a inverse bell nozzle widely known as aerospike nozzles can have in a single stage rocket but it's not used due to lack of knowledge about them !
If you want to make the flame more visible, maybe try adding some salt solution or lithium chloride to the inside of the nozzle before firing. The heat of the exhaust should ionize the metal ions and give some nice colors for contrast.
If you switch from alcohols to non oxygen carrying hydrocarbons like zippo fuel (which is naphtha, don't use normal lighter fuel which is pressurized butane) will probably give ypu more visible shock diamonds. The hydroxyl group in the alcohol forms water, oxygen, and hydrogen species (species = types/classes of molecules present in the combustion products) which don't release a lot of visible light like carbon.
The issue w the non-spike nozzles is that it doesn’t seem like the fluid is reaching Ma1 at the throat of the nozzle. In order to get shock diamonds the sound barrier has to be broken at the throat of the rocket otherwise if that condition isn’t met it won’t form shockwaves. Air traveling faster than sound will behave much differently so if you don’t reach Mach 1 by the throat you won’t get any shockwaves. Not sure if you took that into consideration but just thought I’d add in
You deliver like multiple youtubers combined. Feels most like Peter Sripol than any other given the context. Ohh, Solutech. My favorite 3d printing filament.
Not sure if you've seen fire caulk at hardware store, but its a decent glue as well, maybe a good option to keep around for next time you want to blow stuff up :) it also comes in a foam spray.
That is a really impressive demo ! If you're still trying to better visualize the shock diamonds, then maybe a simple Schlieren imaging setup could help. (To stay on a DIY budget, you can just replace the large concave mirror by a couple of cheap (A4-sized) fresnel lens magnifiers.)
Amazing but the reason the first one did not work is the combustion chamber had no oxygen in it which choked the flow so you need either oxygen gas or liquid oxygen(lox) for efficient combustion
A little pice of PVC pipe on the end of the bottle works as well, if it's too short it will just flame out and if it's too long or will produce a nice POW (just detonation, no explosion)!
