What else goes into building a jet engine? - Part 1
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- Опубліковано 9 лип 2022
- This is part one of a follow up video series on our recent turbojet engine test seen in our previous video - • WHAT ELSE CAN A JET EN...
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www.techingredients.com/ - Наука та технологія
I work in a plastic injection molding company in Germany and we love those aluminum extruded beams. Whenever the need arises for a custom structure, that's the quick, easy and cheap solution and, even in an industrial setting, if properly built they're eternal.
i think we used literally 8020 stuff when i was working in a shipyard in germany. unfortunately it looks like i can't get it just for me from them (can't go by the shipyard or such unfortunately)
I have a jet engine powered GoKart. It uses a 75HP aircraft APU engine that delivers rotary power through a gear box that reduces the internal 50Krpm to 6Krpm. We built another gearbox to reduce the rpm to 3500. It has some jet thrust. It uses a variable ratio hydraulic drive system and a home made differential rear end so it drives like a fine automobile. We built it from scratch 20 years ago and many many people have driven it. It accelerates very quickly but is limited to 50MPH, We use a 25% gas 75% diesel mix as fuel. It has dual hydraulic brakes, springs and shocks, a Volvo seat, starts from 3 lawn tractor batteries on board and real jet instruments from an airplane. It even has reverse. The driver is protected by heavy armor plate in case the engine explodes. It has never given us any real trouble. We did sweep up our first differential that came from a lawn mower with a broom. We subsequently built one that has been trouble free.
I would love to see that on youtube if u got any videos of it please show me where to look
I'd love to see that as well, John.
Do you have an idea of how fast it would go without the limitation (and maybe some other modifications to ensure it survives)?
Any videos of? Sounds like an interesting design worth showing as I'm interested to see what you described.
Any videos i would love to see that
Good thing to keep in mind is that 80/20 is effectively the "name brand" for extruded aluminum fixtures. There are literally hundreds of other brands that offer the same or similar products.
More about the standardization...
I've had a bad experiences with their lead time too. It took several weeks for very standard components. I should have gotten the off brands. I think McMaster Carr is pretty good.
It's also worth beating in mind the cost of it lol.
€850 just to buy the parts for the FRAME, not including aluminium sheeting, epoxy coated plywood, castors, base etc.
Thanks for that comment. I used 80/20 for several years in the past working for companies without budget constraints. Now I'm considering a project privately and the cost through 80/20 was alarming!
@@Ontariolabz It really is shockingly expensive, I really don't know how he made this for $350(talks about it in a separate comment) when he says in this video each corner bracket is $15 and it uses 24 of them, that's $360 alone, and the lenghts he uses here are 75c per INCH!! I checked their website, I just left it after that because I didn't want to argue over something so trivial.
They're very high quality tbf, but ye they're crazy expensive to be using for hobbys like this. If I had enough money to not care I'd definitely buy them though tbf.
I love the quality of your builds with every connector, component, nut and bolt always very professional; clearly showing your relevant experience. I'm always looking forward to every video, thanks for the interesting content.
The nuts that were mentioned are called t-nuts, and they are used all over with things like hobbyist fff 3D printers
I just found your channel and im hooked! I love your approach, you've reawakened my love of building gadgets.
Great!
Me too! These guys are just amazing, thanks for sparking that fire in us!
@@TechIngredients Can you make a video on how to build a 100 lb. pulse jet engine with no moving parts using fiberglass or carbon fiber cloth not from standard 0.9mm stainless steel. It would be cool if you included how to hook an ECU unit to control the temperature and fuel injection. Thank you in advance
You folks are always amazing and I love your work. Thanks for sharing all you do!
Your projects are fantastic, thanks for sharing! I'm a recent turbojet owner and enthusiast. I had the first successful start of my J34 turbojet I purchased back in December that needed some love to get running again. Wow was that first startup exciting, I'm hooked!
I'm doing my best job documenting the build on my channel to share with others too. Hopefully some turbojet nerds like ourselves will find it interesting! Can't wait for the next step in your build progression!
The quality of your videos are outstanding. Well explained and thorough!!!
Have you shared the link of where you bought the 80/20 aluminium profiles and accessories, I may have missed it during my watch!
Really loving these videos. Thanks for the great content! ❤️👍🏼
i have an additional idea for yall, power turbine that spins a generator, and if you want to get even fancier, in addition to a power turbine spun generator put a heat exchanger that boils water for a steam turbine that spins a second generator (combined cycle)
As I said, we'll get there.
Thank you for sharing your knowledge and experience with us. I am grateful to you for tasking the time to masjid a video to share things that work.
Love your videos, very informative.
Thank you. I like the thought process.
Thanks for the info! Quality as always!
I really like the colors of the camera yall are using, dont know if thats a color grade or just out of the camera, either way it looks very nice. always impressed with your videos. such a treat when the come out. its a nice refresher to see this kind of longer form content on YT than the other stuff shortend for easier digestion. every so often i get in a mood to actually sit down and watch something. These are nice. Thank you.
Intro is new to me & I like it a lot.
Good that you mentioned the plate subistitute. Materials are a big problem for most people with limited money! Good video as always! Just don't burnout!
Thanks!
We're in this for the long haul.😁
Thank you Tech Ingredients
I am incredibly hyped for the compound unit. I love the way 2 stage compression works because relative pressure differentials is so effective.
dont quite understand what youre on aboot mate but wait til ye hear aboot the three stage designs and crystal fan blades ;)
I was just rewatching the original videos of the turbo jet, nice timing
Thank you for this.
When i was testing fuel cell engine systems we always used 80/20. Super easy to work with and modify. 🤙🏼
Always marvelous. Thanks
I Love your videos, I couldn't get any Great information anywhere
Glad you like them!
I love 8020. I don't love how much 8020 costs.
Honestly if there is one person that I am jealous of on UA-cam it's this guy. He's amazing.
Love your channel... Keep it up!!! Oh, and, thanks for the ergonomics comment because it truly makes all of the difference! Your channel reminds me so much of the PBS show “The New Yankee Workshop.” I actually got to meet Norm Abrams back in ‘93, and that was crazy cool! Seriously... You and yours have something special here! Don’t let cancel culture and other crud get to you. We all need people like you and your crew to fill that Mythbusters sized hole in our curiosity... Thanks again!!!
Very cool , thank you for sharing sir
Very informative.
Thanks for sharing. Too many people hoarde knowledge. Great content.
Love your new schedule. Wish it was daily
about moving the test stand: there are removeable rollers that you can simply put on the finished card and lift it a little bit with it, no engine crane needed
you should ad a link to a source of the aluminium profiles in the description.
I wonder: the 5 holes in the profile go all through, and the profiles have a large surface.
imagine a desk that rests on such profiles with this channels for watercooling.
two side legs would be u shaped and those legs be connected at the front and rear edge of the desk. this would create a loop. at some point this loop could be interrupted to attach a computer to it.
You should look into wagon brakes for your movable stands. We used movable set pieces in the theater with swivel casters but needed to be abe to lock them in position. The caster braves were no secure enough. Wagon brakes lift the platform off the casters so that the platform cannot easily move. Your favorite supplier McMaster Carr carries a large selection.
Will you be shipping orders for your thermal epoxy anytime soon? I ordered in May and haven’t had a response to emails.
We'll check that.
For through holes consider flexiform grommet as well, comes as a ro0ll of nylon that you simply cut to the circumference of the cutout, and then glue in place. Handles pretty much any size hole, and comes in various thicknesses for various materials. Oil, water and fuel resistant, and very hard wearing. Have used it for bearings on shafts that have a limited amount of rotation ,and it does work well, keeping the shaft from wearing for a long time, and simple to replace as well when worn.
You reading my mind. I was about to pick few meters of these extrusions for my balcony FV project. With similar table for battery controller and other accessories.
Damn. Now I want to build a house out of that 80/20. Cool stuff!
I worked at a manufacturer of conveyor belts for several years and the area I worked in was R&D. We used 80/20 for everything, for shelving to complex support and safety "cages" which housed massive tools designed to cut the plastic modules which the belts were made from. The main advantage, no welding required, the adjustability was another key point in its use. If something didnt line up quite right, loosen a few screws and give it a decent bump and retighten... WALA problem solved. And being that it was aluminum, no rust or paint to deal with. Hopefully one day it will be affordable for home use, unfortunately it is expensive and beyond the budget of the average "inventor" mad scientist.
Thank you for the project update, was curious about the compound compressor set-up after the last video, might make starting procedures somewhat more tedious if using the larger as primary inlet, unsure
Can't wait for that solar tracking mount video you hinted at. I've got a small diy 12v 2panel setup that I want to be able to wheel around anywhere as a single collapsable unit (that can fit in a sedan with the rear seats down) with a view to add tracking later. I'm keen to see how far 8020 hardware would get me.
I'd love to see this thing in action. That's quite a bit of things to put together for a single person.
We use a similar extrusion of aluminum in the advertisement industry. For outdoor advertisement next to freeways and such. Very strong stuff.
1:52 I can’t wait!
I’m kind of curious coming from a Turbo-Generator perspective, since Gas Turbines aren’t too picky fuel wise. Granted the boilermaker level welding/brazing would be hell, but a “heat recovery steam generator” + turbine could make it a little baby combined cycle gas turbine!
We're going the Tesla turbine route.
Very good
That aluminum is a great heat sink as well, I've built some very strong LED growlights with the same material.
Very nice, very nice
I would love for you to cover SPRAY FOAM INSULATION. Similar to your best speaker and thermal paste series.... it is so expensive. For Homesteaders or DIYers... this could really be useful.
Yeah, the 80/20 is awesome material. I've been amazed at the scrapyard how much shows up with useful related and other parts with material that isn't bent yet. So for those on shoe string budgets... fyi rescue potential capabilities maybe in your neck of the woods.
I'm really interested in the turboshaft engine. Do you intend on connecting that to a motor-generator, or are you going to put a propeller on it (and maybe make the ultimate catamaran)? I'm asking because I'm wondering how you'd actually measure shaft power, and if the power was high enough, it'd be interesting to see if you could make a decently powerful generator out of something like this.
Yup.
From what I know jets have very low torque
He said he was going to do a turboshaft. Thats basically another turbine hot section connected to an output shaft
@@RogierYou they substitute with rpm. You would need reduction gears to work in the right rpm range for a standard generator.
@@TechIngredients awesome,can't wait to see that.
Please please please go back and list EXACTLY what you used for your acoustic speaker setup, also why you used the acoustic ceiling tile versus the rockwool faced insulation you used for the sound chamber. WHICH type of acoustic ceiling tile did you use? I've been attempting to match it, while also providing acoustic dampening on my walls.
The rockwool insulation is too soft and would simply compress rather than bend or flex.
The Armstrong ceiling tiles are all basically the same except for the cosmetic surface treatment. They should all work similarly.
Love the aluminium adult LEGO set... xD Wish I had a good whole bunch of those, would've been so useful for so many things recently while my mom was settling down in a new home.
You can always kinda improvise with cheap stuff when there's not a huge need for handling lots of weight, but when you need something to absolutely never topple or break and then handle lots of weight securely... that's when it gets complicated.
This is where its at!
I can't remember if you said the extrusion is also easy to cut to size on most basic chop saws. I love alu extrusion, the only pain is the cost of the bracing plates; a good alternative however is blind hole fixing.
You still have the power cables in the air in US? Here in Norway - everything is in the ground, but interesting videos. Here i don't have to crash my drones into the cables... 72 years now so it is nice that the cables is in the ground. Thank u for making this. Still inspires me....
In a good majority of the US we're just glad that the lines still function at all. 😂
I am still disappointed with the last notification you had to give us about those fakers but I am very happy to see this content today thank you
Be super cool if you end up building a recuperator for the turbo shaft engine!
Thx
Can confirm, labs at Leiden university are held together with 8020 extrusions and tinfoil
Ha!
A side topic for the turbojet engine thing might be bleed air systems. The compressor can make a surplus of pressurized air on the intake side. And although it's hot from being compressed, it's still not as hot as the exhaust gases. In turn it could still be used to drive small auxiliary turbines that provide power or simply providing pressurization to other things.
True and we're planning to incorporate that principle into the turboshaft.
I love those Al strut systems but wish they had Kits with all the he common stuff all in one at a bulk price. I struggle with keeping any inventory of all the parts I need (and some I have no clue exist) and buying them ad hoc can get pricey. I'd love to be able to spring 500 bucks and just get a starter kit of everything.
I disagree.
They are fairly priced, but not cheap. Order what you need for a particular project and add to that inventory as time passes. You'll find that what you use is rather limited compared to the potential options and many of those "kit" components will just end up sitting in a box.
With your experience building afterburners now, would you be willing to look into afterburners on EDFs again? I've been trying to make one work mostly for show purposes, but I struggle to keep my heating tubes from freezing up with the liquid butane/propane mix I am using. Would be cool to see you look into that again to make a reliable show afterburner for RC airplanes.
There is a bunch of T6 3/16 aluminum sheet on Repurposed Materials in their texas location.
I would love to know where you sourced the turbocharger because I can’t find a turbocharger that well suited for this conversion.
i'm curious what your end project is, what you will use the mechanical output for. i was considering the end goal for my project to just drive a turbine mounted to a cheap generator, you could bypass to get correct rpm for power generation but i havent formulated any load response mechanism or process, a little further down the road. i suspect highly inefficient but that's not the point for me, im not going to beat rolls or GE anytime soon, just for fun right :P
on the structure you seems fond of you gave the benefit of gusseting to the product, you can add gussets to welded structures of course as well! ;P although you certainly cant beat this item's modularity really! as always thank you for raising the tide of human knowledge kind sir
God bless you, my son. I have been looking for a justification to get a Harbor Freight engine lift for literally decades.
FWIW, there are a number of "homemade" turbojet engines on UA-cam if you want to go look for them.
Adding a combustion chamber and nozzle to a turbocharger is a good way, but unfortunately, turbochargers are made for cars/trucks and so aren't particularly light weight.
So if anyone's interested in seeing someone start with the impeller and turbine from a turbocharger and then making/machining pretty much all the rest from scratch, I suggest that you take a look at Igor Negota's stuff, starting with this video that basically shows the overall process of going from a turbocharger to a model aircraft jet engine in one video:
< ua-cam.com/video/dYFYZ-g7fzA/v-deo.html >
Igor is Russian and so if you want to understand what he's saying if you're an English speaker, then you need to turn on subtitles/CC and select the language of your choice.
Sure, that's an interesting build, but a bit tedious for most of us.
@@TechIngredients
> Sure, that's an interesting build, but a bit tedious
> for most of us.
With all due respect, sir, I suspect that just about everything is so "tedious" "for most of us" out here in viewer land that the best we're ever going to do when watching a video such as yours or others like Igor's is to say either, "Yeah, that's great", or "Gee, what a load of crap".
I suspect that only for a very small fraction of "most of us", the urge to do something more will result in the purchase of a pre-built small turbojet engine to avoid the "tedium" of actual construction and experimentation.
And it's only an even smaller very small fraction who will go on to trying to make a turbojet from a turbocharger, or even worse/better, try to use the impeller/turbine of a turbocharger as the starting point a lighter turbojet engine.
I was not/am not trying to slam or in any way diminish what you have done/are doing with your turbojet engine in your series of videos.
I think it is a really very nice piece of work, and I'm sure that it does what you want/need it to do and/or services as a basis for making something that does.
My purpose in mentioning Igor's videos is to point out to others yet another really nice piece of work done with a different goal in mind, namely something that could power a model aircraft.
Igor's work may seem "tedious" to someone such as you who has already done something similar, but may I not so humbly suggest that your response seems to be dismissive of something that, like your turbojet, is worthy of appreciation by those of us who just sit around and dream of making such things.
I would love to see a series on naturally aspirated propane burners using a venturi and Bernoulli's principles to improve my blacksmith forge, but also applicable to people using a foundry. Seems related to some of your rocketry projects. I have built a fairly crude propane burner using plumbing parts with a propane tip for the ejector. Upgrading to a ribbon burner would be a great upgrade. A nice addition for simple/cheap vs more complicated but better heating. If you have recommendations of someone who has covered this before, I would appreciate it as well, though I love your style.
One thing you can look into is a coil that is located inside the burner and which preheats the fuel so that the pressurized vapor exits just inside the venturi and supercharges the intake flow.
This was the basis for an old jet engine design without moving parts called the Gluhareff jet.
@@TechIngredients Just watching a few videos on Gluharoff Jet shows me it would get way hot enough, even without insulation. Perhaps too hot! Will need to test, but looks like a fun build. The 90 degree bend seems odd based on what I have done with naturally aspirated venturis, but you can't argue with those results.
EDIT: Appears 90 degree is more for propulsion, so not necessary, strictly speaking..
hello
have you done a of grid thermoelectric generator build ? this would be good thanks
@ 8:17 You can now officially call yourself the _Jet Engine Godfather_ 🤣
I've been wanting to build a 2x60 belt grinder from 8020.
Hi, can please make an active noise cancellation like on a door frame so the sound will significantly reduce if bit cancel before entering the room?
Super interested but had no idea on the know-how.
I would like to see a video on hydrogen/electrolysis fuel method of generation. Thank You
We'll be covering that.
I love this 'channel ' and agree with almost all of the analysis and comentry. I have unfortunately discovered one error when I watched the gas turbine videos. The statements about efficiency and pressure volume diagrams.
The thermal efficiency of reciprocating heat engines like diesel (up to 38%) and petrol ( starting at about 12%) is obtained from the area under the pressure volume curve. The efficiency is a function of the engine compression ratio. The higher the compression ratio.
However the same does not apply to gas turbines.
I did thermodynamics when doing mechanical engineering. My professor has worked at Calder Hall and completed his research masters degree on the emergency cooling of nuclear reactors using liquid metals. He also worked ar Rolls Royce on reasearch using fluidised combustion with gas turbines.
Now, I have been searching for my notes from 1983 with little success, but, if memory serves me correctly, PV is not the determining parameters for gas turbines, it deta T. (There's no deta symbol on my phone) That is the change in temperature between intake and combustion.
A really good gas turbine can be 42% thermally efficient. In today's aviation gas turbines, they raise the combustion temperature to a point where they drill hole in the leading edge of turbines blades and pump bleed air from the final stage compressor to produce a boundary layer of cooler air surrounding the blade to stop it melting and/failing. The blades are cast as a single crystal to provide the highest material strength. For many years, 747s were loaded with 4 tonnes of demineralised water for take off. The water was fed through the holes on the leading edge of the turbine blades to cool them and provide extra thrust from the expanding steam.
My memory is not as good on steam turbines. Pressure and temperature are also prime factor the limiting factors are again pressure in this case. Steam power plants are typically (if my memory serves me correctly) 540°c and 10 bar pressure limited by the strength and melting point of steel used to construct them. Higher pressures and temperatures are more thermally efficient but the cost of exotic steels to accommodate this is not economically viable.
Your commentary is invited.
I'm not sure about that. Consider a blower, not a compressor that passes a flow of uncompressed or negligibly compressed air into the combustion chamber where enough fuel is added to reach just below the melting point of the turbine. The engine wouldn't generate enough work to even drive itself. If you ever try to start an engine you'll find that without enough compression it won't start or sustain.
definitely very useful for small-medium sized objects that need to be rigid - its a popular frame material for 3d printers and cnc machines.
i don't think it'd be great for building a house though, the connectors have very small contact points to the beams.
I disagree about the building because those contact points are widely distributed.
@@TechIngredients the little wedges don't have much area. granted when you use those angle connectors with three of them you get a bit better. i don't think it would be as strong as a good wood joint with nails and glue.
that said, nails and glue are not nearly as easy to use. i don't think its a bad system, but it has its strengths and weaknesses.
@7:00.. It's some weird shaped peanuts you have up there in New England.. I think most would describe those rubber thingies as doughnut shaped
But those would be unusually shaped doughnuts with that gap. How about a barbell?
"Stronger than welding"
Press X to doubt
It's not only about the joint, but the geometry. The leverage with a weld isn't very good.
@Tech Ingredients
Which company is the one who have the metallic structure for making working benches and other working tables;
Cause i want to check it and buy some of there products.
80-20
have an electric car...a jet range extender would be awesome, simply because of the higher efficiency compared to a mechanical internal combustion engine. Very cool stuff. Looking forward to the turbine experiments!
Was the intro fireball effect a custom blender animation or just a stock animation? Do you use any software when designing your projects like CAD/fluid simulation programs?
The smoke effect being "bubbly" is a major give away that it is an animation or simulation, but it does look good!
burn barrel, mount the turbo to the top with the inlet of the exhaust side going into the top of the barrel, the boost side of the turbo goes to the bottom of the burn barrel .. get a basic oil system flowing to keep the turbo lubricated and you throttle the turbo by the inlet of the turbo like a throttle body. .. start a fire close the barrel so its sealed and only exit for anything is into the hotside of the turbo..then spool the turbo a bit and it'll self sustain itself after a fire gets going.. CRAZY BOOST! YOU NEED A WAY TO CHOKE THE TURBO OFF FROM MORE AIR.. IT'LL BASICALLY RUN AWAY ON YOU IF NOT.
yeah there are various ways to thermally expand gases and channel them through a turbine. you should make a video of your idea :D
@@byloyuripka9624 it's already been done my friend. not my original idea but much simpler and easier to build.
I was wondering if you know much about wood gasification? I know during WWII the government actually promoted it and many cars on the road were powered by gasifiers at the time. any experience or plan to experiment in the future? I'd love to learn more about the technology.
You can goodl drizzler and read about it there.
I wonder what happened to the "open source" aluminum extrusion "Maker Beam" system. 80/20 is great though, thanks!
Would love to see someone build a shed with the aluminium kit
You could try using the bladeless technology for the jet.
It’ll revolutionise the jet engine.
Can you do an episode on making the gooiest glow in the dark powder or paint? Maybe using a low gamma ray so it’s self lighting?
Can you make it generate electricity? And how would it differ from a standard generator.
build it big then you don't have to build it again, fusion reactors, Just making a laser speed gate for model rocket cars, lens holders in 6mm aluminium, go big, go rigidity. Inspiring channel.
have yall considered putting an intercooler between the compressor and the combustion chamber?
No. It would decrease the performance. Removing heat energy is useful if you want to pack more air into the cylinder of an engine, but it decreases the total volume of air that the combustion chamber in the jet engine is trying to maximise when it heats it further.
Just curious but what are you using these turbojets for? This setup reminds me of having a disassembled computer you might use for testing different components.
That's about right. It's a test bed for different components and methods.
If anyone is worried about anything being too expensive, please do remember that a big company selling industrial components is absolutely going to have clones and knock-offs. Try those out first. See if they work for you. The only bit of advice I will give you is this: Buy a LOT when you buy the cheap stuff, because you will almost never be able to find that exact one again, and having more than one set of 'standards' is really annoying.
Or, you know, buy the real stuff which is always the same and always works and has a big company behind it (and thousands of side-companies) making stuff for it. Up to you.
Question : is a steam turbine when you inject water in like an after burner , making steam ?
could you talk about termal expansion - what elements present the biggest problems
Really it's just the flame tube in the combustion chamber and afterburner. Just estimate the maximum temperature (about 700 C) multiply by the expansion coefficient for stainless steel and fabricate with at least that clearance.
Can you make a rc turbojet and use it fly like gravity industry?As the components look less when compared to 2500 usd
Thank you.
"[...] and I can actually get one of those trailers in here, if I want [..]" Am I strange that I instantly started thinking about how to mount a steering bar to that trailers front wheel, in order to get a steerable jet-propelled vehicle?
I am pretty sure, this dude will build something to land on Mars in the near future. Then he will post a video that says, if I had enough aluminum I would have landed on Jupiter... 😄
Is there a way to get shaft power out of the turbocharger? For generating electricity? Theoretically, turbines are the most efficient I.C. engine, and if you could use the electricity AND use the waste heat, you might have a way to heat your house + generate electricity. In other words a residential scale combined heat and power system. If good heat recovery was possible, it would be like burning propane (normal furnace) and burning propane + generating electricity. BTW, love your detailed vids, anonymous presenter and younger guy.
Yes, there is.
And, thanks!
Could you show us a way to heat our home without gas and heat pumps
80/20 sells their odd cutoffs on eBay if you want to save money.