I'd love to see you create a waste oil burner. It's able to burn most oils (used engine oil, vegtable oil) and typically gets more than hot enough to melt aluminium. Tomatoes are disgusting!
Idea: design and build 3D printable test equipment for testing how powerful your rockets are, it would make for a rocket filled video, allow you to revisit and compare your old rocket projects, and, the test equipment could end up being products you can sell on an integza store. Tomatoes are disgusting!
Not complaining too much. Made the same test rig suggestion comment before but this one blows up being slightly different with the shop suggestion. There went my printer.🥲 Well done.
Integza what you do in this video is known as brazing as you are not heating the joining metals to melting point you are merely melting donor metal into the joints/surface of the metal. Welding creates sufficient heat to liquefy a small portion of the joining metals and the donor metal creating a new single piece of metal.
Yeah that's a really good idea actually. It would almost be like a turbofan engine in the way that the excess air goes around the inner core to cool it down.
Great idea. You could cool the engine with the air before it gets to the chamber, and by the time it gets to the chamber the air should be slow enough where he could get rid of the flame holder. It would increase efficiency drastically.
I noticed when you were brazing you were feeding in the filler by hand. That works if you need to do it, but in those joints you can also form a ring of braze that slips over the tube and rests on top of the joint. Then cover in flux and heat it up. Because you have the filler placed exactly where you want it before you start the brazing operation, you only need to control the flame and heat evenly. This lets you get much much more consistent joints, and avoid most potential of moving the part accidentally while brazing.
Another tip, don’t direct the flame towards the joint but heat up the metal next to it. Once the base metal gets hot enough it will melt the solder and suck it into the joint.
@@PTMG yeah, welding would be better with anything that glows during normal operations. I do think silver brazing would be an excellent solution for the intake side however, as the capillary action of the filler is really great for getting a seal around fittings and joints, and it is very nice on thin parts as not melting the base metal saves you from a lot of distortion issues. It can also be handy on dissimilar thickness joints. That being said, brazing =/= soldering.
That was quite "engine rich" exhaust when you had the nozzle. It would be interesting to see a side by side comparison of the leaf blower thrust vs the assembled engine.
That's one thing I'd like to know in a fair amount of these engine builds. How much force is he achieving from just air and fuel delivery VS how much thrust is the combustion actually producing?
When you do your jet engine builds like this one, I would love to see a thrust comparison with and without a chemical reaction. For example in this video, how much thrust are you getting with just the leaf blower vs how much thrust are you getting with the leaf blower jet engine.
IDEA: Improvement for Tesla Turbine Create magnetic bearings to make the rotation completely frictionless. You can buy ring magnets where the inside of the ring is one pole, and the outside of the ring is another. Through the proper configuration, you could create a frictionless axle. If you use aluminum plates for the rotors, you could probably reach amazing speeds! LOVE YOUR CHANNEL!
Honestly, it could be relatively simple. Given a flexible high-temperature coupling, all you need are two pushrods connected to the nozzle, and you have full control over rotation. A 50mm linear actuator can be had for about 28€ on amazon, and all you need is two of those and an arduino to control it all for the most primitive form. Of course, those are DC motors, so you need a linear enconder (or a linear potentiometer, which is easier to read and probably also cheaper) in case you want position feedback. For a flexible coupling you could just use aluminium duct hose, as long as your exhaust temperatures are low enough, or you can actively cool the coupling.
With summer coming I would love to see you create a solar concentrator with around the house items! Possibly with a parabolic mirror or converging lens, you pick!
Expert lvl idea: Add a nozzle with the ideal expansion ratio, and deal with the heat by regenerative cooling. For an even greater challenge, use an aerospike nozzle. This will make it so expansion ratios are a bit less important but it'll be much more difficult to regeneratively cool.
Bell nozzles are pretty much only for changing the impedance of the exhaust to the air, this is done because the exhaust can only leave at the speed of sound so decreasing the pressure by expanding the nozzle can increase the exhaust speed. Also regenerative cooling is cool but it would probably be more efficient to just route some of the air from the leaf blower over the nozzle
@@KerbalChris Yes... Bell nozzles do increase the exhaust speed the larger the nozzles, but at sea level, eventually you start to run into issues(Flow separation, e.t.c.). Also I think it would be better to do regen cooling with the fuel since it's already at relatively high pressure in it's tank. Taking some of the leaf blower air to cool the engine would reduce the exhaust mass and/or speed and lead to a decrease in thrust and efficiency.
@@biohazardindustrieswr697 you notice how the engine flammed out when the leafblower was at the lowest setting? Thats what i was getting at with routing some of the air. Also flow separation wont be an issue at all, you’re still gonna use the expansion ratio for sea level and the ratio for that nozzle expansion and the throat wont contract the exhaust diameter too much
@@KerbalChris Yes, the engine did have a tendency to easily flame out. However, that in of itself is an issue. I believe the best course of action would be to incorporate multiple combustion chambers, splitting the air in between them, and keeping the propellant regen cooling. That would solve all the issues I think. As for expansion ratios and whatnot, as long as the ratio isn't too high, I don't think it'll matter anyways. Integza isn't spaceX. He isn't particularly worried about ISP and all that anyways. Just thrust.
Hey Integza, after watching your butane balloon demo I have a PPE (Personal Protective Equipment) recommendation: Navy flash gear. It's a set of elbow length gloves and a hood to protect your skin from flash fires. Relatively lightweight, breathable, and cheap insurance for your face parts and meat claws. You can find sets from the USN and RN relatively easy. Keep up the awesome jet work!!
Check for the operating range of temperatures your materials can withstand, there's no point in making a nozzle in aluminum, same thing goes for the welds. As for the nozzle this is the case where you could try to use a De Laval (if you could manage to get the flow sonic in the throat any subsequent expansion would accelerate it and provide you with more thrust) , spot welding a sheet steel one could somehow work but I wouldn't trust it to be honest, with the production capabilites you have now there's not a lot more you can try. Your aluminum nozzle was at 800K, that's the temperature at which it starts glowing red, so look for better welding methods if you want to have it survive Source: boring aerospace engineer P.S. f**k tomatoes
He can't print them at this size, and using wrong materials is sadly going to lead to failure, maybe he should get a tig/mig and weld thicker sheets of steel, with plumbing solder there's not a lot you can do as it's not made for rockets but for household pipes.
Hey you boring aerospace engineer, here is a boring mechanical engineer student. What he did was not WELDING, just simply SOLDERING. There starts the problem. But the nozzle is not necessarily out of Aluminum?
Instead of having a component that slows down air and thereby the combustion you could insert a pilot light instead, its like your spark plug system but waaaayyyy better and more consistant, it also shrinks the space it takes up.
To improve the temperature you could channel a part of the air flow rate around the engine, so it can cool down the combustion chamber and the nozzle. This way you don't need additional control on the leaf blower. You can use an external casing like a turbofan engine and a divergent nozzle at the outlet of the blower so it slows down the air and can be connected to the case.
In almost every single integza video i get so entertained by one part of the project I completely forget what he's building, and then remember "oh yeah, he's building a jet engine"
@@user-cg3em4cw4f neutron radiation is detectable and actively searched for. Particularly to search for rouge nuclear programs. Also to initiate fusion without the immense equipment that you see in actual reactors you need a neutron source. Both the source and reactor generate a neutron flux. The source usually is radioactive in other emission types as well. I know how fusion works. The US government raided a house once when someone tried building their own fission reactor. They found him by triangulating the source of neutron and beta emission. Edit There is a system of detectors globally that hunt for radiation leaks from reactors and nuclear tests
@@avroarchitect1793 You clearly do not know what you're talking about. Building a fission reactor is far different due to the ridiculous amounts of radiation they give off. This is what a fusor is. en.wikipedia.org/wiki/Fusor Notice it's listed as a popular hobbyist project. That is because small fusion reactors do not give off noticeable amounts of radiation and as such do not get picked up by the government.
What you could do is allow some of the leaf blower air to bypass the core. That would help keep the exhaust cooler and you might get a bit more thrust too. Real gas turbine engines work similarly.
Exactly my thought too! if he where to put the whole assembly in another metal tube, and use 3 small EDFs to create bypass stream. it would pick up heat energy and create more thrust
I guess with that really high temperature, you need a TIG welding machine rather than soldering with brass. High melting steel can withstand a bit higher temperature than brass.
Each time I watch your videos, I get terrified about how close you come to putting your hand in the exhaust of your engines while trying to ignite them. So I propose that you try to make an automatic ignition using something like an Arduino and a solenoid valve. With that, you could maybe even control the throttle. Keep up the great work! Can't wait to watch your next video! :D
Quick tip for cutting sheet metal. Make multiple shallow cuts in the shape you want to cut out and you don’t have to worry about cutting our shapes one section at a time.
I’d personally love to see a reaction engine. Since reaction engines are still new I think it would be a excellent learning experience to see what is new on the rocket world. Since you can get a lot of acceleration out of reaction engines I’d love to see it on some kind of flying creation or the penny board.
You should consider to use propane or a butane/propane mixture. Butane burns well but has no power. Propane burns less well but has much power. That's why LPG for gas in summer time has 60% propane/40% butane, and in winter time has 40% propane/60% butane. The reason is that propane requires a higher temperature than butane to burn. In the summer the temperature is high enough to add more propane for better mileage but in the winter butane is added for better ignition. Don't forget a flashback suppressor 3:00 that is called soldering respectively hard soldering because temperature is above 450°C else it would be soft soldering. Welding is *fusing* metal parts together ;)
When I see videos like this from people like integza or Colin furze, I'm always interested to see if it's actually more thrust than the leaf blower on its own
Yeah I came down here to say the same thing. Just soldering basically. Integza, if you could get yourself some weldable sheet metal and actually do some welding, these would come out way more robust.
And brazing works in way lower temperatures which is why it melted under test. Actually welding thin sheets is a pain though, the spot-welder approach is a smart one
@@EeroafHeurlin Aye, if he wanted to try again he could reinforce it and try to make a design that worked with the spot welder, possibly have a pipe that fanned out on the end, spot weld that, another disk that could go over top of the welded fins or blades (not sure what to call them) with a larger diameter than the fins, and spot weld that as well. Seems a little overkill, but that might be the solution for what tools he has.
The "welding" you kept referring to is actually brazing. They're not the same thing: Brazing is basically beefy soldering. You're heating up the parent material until it's hot enough to wick the yellow brass rod between the two pieces. If you pick up a cheap TIG welder, you'll have a lot more success with the nozzle designs and you could ditch the spot welder entirely.
dear integza, direct some part of the air from the blowerr over the exhaust, so you might solve the over blowing issue and exhaust overheating problem at one shot and you may get extra propulsion meanwhile you increase the fuel efficiency, all you need is a jacket for exhaust and a hole on main tube to be coonected to the jacket.
Nice to see you back, alive and well😁 The "welding" problem is that you were hard-soldering (with brass?) To proper weld you need you fuse the Parts, instead of sticking them together with a metal with relatively low melting point. Anyway: another enjoyable video, though I still miss your facial hair 😜
@@Blox117 Since our friend Integza is Portuguese, and the Portuguese words for "soldering" (=brasagem) and "welding" (=soldagem) are quite confusing, I opted for "hard soldering". But you are absolutely right, it is also called "brazing". I've been brazing since 1973, when I built my first two-stroke exhaust, aka expansion chamber. (yes, I'm really, really old 😁)
I don't think it's the most practical idea. See, Propane and butane can both be compressed into a liquid under relatively low pressure (up to about 15 bar). In comparison, hydrogen has to be stored as a compressed gas, which means really thick and really heavy tanks. In the past, we had a Volkswagen Polo that ran off of gasoline or natural gas (methane), and the methane tank took out most of the trunk. It was about four times the volume of the gas tank, and still the methane stored in it didn't hold as much energy as the gas tank. Given that methane holds more energy per volume of gas, (about three times as much), a hydrogen tank at comparable pressure will only provide a third of the energy of methane. And if we're talking about hydrogen/methane tanks, we are talking about a few hundred bars of pressure, compared to the 15 or so that propane/butane need. This also means following all the proper safety precautions for dealing with a multi-hundred-bar tank of a highly flammable gas. Gas tanks of that pressure are no joke, and if not handled carefully can easily kill someone.
something that might challenge you a lot is a water jet like the the ones on boats. i don't hate tomatoes but the tomato lord is a jerk. 😁good luck if you ever do try this👍
Idea: make a solid rocket engine. You could make a star shaped grain of propellant and it wouldn't need any cooling if it's well designed. Just pure thrust!
Lol love the goofy sponsor. Electric is the way to go... Unless you need to move cargo, or travel far, or use it as a support vehicle... But using 3x the energy and carbon emissions for the same output... They do that 👍
Idea for next steps: 1. Make a test rig to measure the output force of each of your rockets engines. Then you can optimize them using the data you measure. 2. Choose the best one to build a flying rocket
I'd love to see another video like this one, maybe use a different source of fuel (propane?) to get even more thrust. It was cool to see one of your designs produce this much thrust!
Propane is very similar to butane, except that it is harder to keep liquid, I recommend pentane for engines since it will not immediately become a gas allowing you to pump in very high pressure air for more powerful combustion
I actually think most of the thrust came from the leafblower as oppose to the combustion, despite it getting so hot. That's probably to do with the exhaust velocity, of course higher velocity is higher effiency. You know you can increase exhaust velocity whith a narrowing throat until supersonic velocity right? (then you need an expanding bell nozzle). Also more importantly I'd still say its running very oxygen rich, hence the extremely high temperatures. The leaf blower added oxygen, but way more oxygen than you bargined for. Yada yada. The oxygen ate the engine. Something like 30% of a modern jet engine (more accurately a turbofan engine) is just pressure recovery, controlling the inflow of oxygen to get a favourable reaction. Not too hot. Not too ineffecient.
I think if you used an EDF along with a compression stage before the combustion chamber you'd get more thrust, also use 2 different fuels, butane as you used before to rise the temp and once at high temperature use Jet-A. Hopefully you get around to seeing this I belive it would be an awsome build 🤙
suggestion: the backyard scientist did gas powering things that should not be gas powered so maybe you could steam power things that should not be steam powered. P.S. if you like this comment please like so integza can see this.
so for a school project im making a jet engine and your jet engine videos have helped ALOT and well because rules nothing combustible or flammable, so i am making a cold jet engine, water and high pressured air, ive alerady got my first compressor fan done, ohh btw i dont have alot of tools so im making the fans and turbines with metal shears. but your videos have helped alot to make this thing, that being from making the fans to the turbine, it has all helped
Why not make a HHO jet engine using water as fuel! Or use charcoal (the most common form of carbon to acquire) and sulphur and potassium nitrate (stump remover) as a solid state rocket fuel along with a simple metal aerospike nozzle and scale it up for your Grandpa's bike!
You could go back to what I think is the root of this channel: trying to revive archaic inventions and apply them in new and interesting ways. Here's the pitch: Combining arc lamp technology, specifically in the form of a Yablochkov candle with the concept of an arc jet. Should be doable, maybe? And high voltage arcs are more than capable of tomato murder if that's a requisite.
I have a suggestion for your rocket nozzles. Try printing them with channels inside and flow liquid oxygen through the channels first so it cools it while running. Saw it in a video from Veritasium of 3d printed rockets. (you probably saw it already tbh)
Hey Integza, I really like your videos. They really are inspiring although I really can't follow up with all your skilles. I would love to see you building up a miniature of a car engine. But I don't know if its not too complicated with all the parts that have to be perfectly aligned and printed or build. Nevertheless I think you next project will be lit
Put bafolds around the output of the flames to prevent flame out. Also the nozzle improves the efficiency of the engine by allowing the exhaust to go out faster than without the nozzle.
Use leaf blowers and light weight materials to create a hovercraft (hoverboard of sorts) with a heavy duty trashbag skirt (much lower friction/forces to overcome than a bike) Mount your leaf blower jet turbine to that with some sort of swivel for direction control and you should have one cool ass/low cost vehicle.
I suggest building a safer test station outdoors to include stuff like a thrust bench, some bulletproof glass to hide behind, fire extinguishers, so you can go crazier with rockets without blowing up or burning down anything - safety first safety second and safety always !
use ducting to separate the leaf blower's air into two pipes, use one to feed the engine and rount the other around the outside of the flame tube, to cool it and produce extra thrust from the heated air (you could even eventually make an after-burner powered by the heated cooling air - eventually)
I feel like you should move to America, that's where all the cool people are, and its probably easier for you to get supplies for your projects. Love your face.
If you didnt know, this engine is often reffered to as a motor-jet, where an external motor is responsible for running the compressor. There is few examples out there but a late WW2 project is the I-250 with a combined powerplant. If built with a powerful motor and a well designed compressor, it is possible to get quite a bit of thurst. And while it does require some heat resistant materials, not nearly the amout that a turbo-jet does, in which the turbine blades and it's bearings need to resist the heat of the exhaust.
Video idea: You could take a methane bottle (like a lighter refill bottle) and 3D prinz a nozle with a combustion chamber, you would need a mechanism to release the gas, then you would almost have a rocket.
I have a good possible way for you to make 3D printed parts into metal. You can print them in foam or any filament that melts easily and then put the part in a bucket and surround it with sand to make a sort of mold. Then you can pour molten metal onto the 3D printed part so that the plastic melts away and the part which left is made out of whatever metal you use. You could make complex parts out of steel or aluminum for future rocket designs. I learned this technique from TKOR were they created aluminum parts using foam board.
"Today is a beautiful day... Perfect for a J.... Jet Engine." I thought he was gonna say something else haha. Integza has the comedic character of 3-4 people all in one. Unique yet still scientific. Best channel ever!
How about directly supplying the engine with 70% - 100% oxygen by making another ring of tube smaller than the butane's so that there will be more combustion. The oxygen tank can be placed parallel to the butane tank (if the butane tank is on the right side, the oxygen tank should be in the left side and vice versa). Also, putting the spark plug control alongside the leaf blower control in either side of the bike's handle opposite to the butane and oxygen controls will be more convenient so that it can be operated by only one person.
2 of those engines on a little go-kart type vehicle with wings and control surfaces would surely be enough to get you airborne with a long enough run up
I know this suggestion is late it might not even be seen, but a big, a very big part of the thrust comes from having a nozzle. The fabrication might be the greatest limiting factor for you, but maybe you can try a de laval nozzle or just a converging nozzle and see what works best for you. Hope the best for you!!
I'd love to see you create a waste oil burner. It's able to burn most oils (used engine oil, vegtable oil) and typically gets more than hot enough to melt aluminium.
Tomatoes are disgusting!
Maybe make a metal melting forge while he's at it.
@@chubsythedog2325 Like The King of Random!
I'd love to see a waste oil burner setup.
@@jacobbatesmitchell4189 I really do hate the new TKOR. They are like an ordinary "Life hacks channel" nowadays.
under and hour and already 500+ likes. i guess enjoy your 3D printer.
Idea: design and build 3D printable test equipment for testing how powerful your rockets are, it would make for a rocket filled video, allow you to revisit and compare your old rocket projects, and, the test equipment could end up being products you can sell on an integza store. Tomatoes are disgusting!
There goes the printer
That would be fire as hell
the second part might be hard, as most of the previous engines blew up or melted hah
Not complaining too much. Made the same test rig suggestion comment before but this one blows up being slightly different with the shop suggestion. There went my printer.🥲 Well done.
I really needed a 3d printer. But I am unlucky 😢😢
Integza what you do in this video is known as brazing as you are not heating the joining metals to melting point you are merely melting donor metal into the joints/surface of the metal. Welding creates sufficient heat to liquefy a small portion of the joining metals and the donor metal creating a new single piece of metal.
Idea: Add a proper nozzle and use some of the leafBlower excess air to cool the outer part of the nozzle
Good idea
Guess who's getting a printer haha :)
Very cool jet bike! I wish I had the ability to make one. :)+
Yeah that's a really good idea actually.
It would almost be like a turbofan engine in the way that the excess air goes around the inner core to cool it down.
Great idea. You could cool the engine with the air before it gets to the chamber, and by the time it gets to the chamber the air should be slow enough where he could get rid of the flame holder. It would increase efficiency drastically.
I noticed when you were brazing you were feeding in the filler by hand. That works if you need to do it, but in those joints you can also form a ring of braze that slips over the tube and rests on top of the joint. Then cover in flux and heat it up. Because you have the filler placed exactly where you want it before you start the brazing operation, you only need to control the flame and heat evenly. This lets you get much much more consistent joints, and avoid most potential of moving the part accidentally while brazing.
Another tip, don’t direct the flame towards the joint but heat up the metal next to it. Once the base metal gets hot enough it will melt the solder and suck it into the joint.
another tip
don't use brazing at all for a project like this
soldering =/= welding
and the dripping solder is exactly why
@@PTMG yeah, welding would be better with anything that glows during normal operations. I do think silver brazing would be an excellent solution for the intake side however, as the capillary action of the filler is really great for getting a seal around fittings and joints, and it is very nice on thin parts as not melting the base metal saves you from a lot of distortion issues. It can also be handy on dissimilar thickness joints.
That being said, brazing =/= soldering.
Also, a quick tip, spraying water under a second tube over the primary one is a great way to cool one of these basic engines.
That was quite "engine rich" exhaust when you had the nozzle.
It would be interesting to see a side by side comparison of the leaf blower thrust vs the assembled engine.
yes! we need a control run, to show the difference between just the leave blower and the whole assembly.
yeah that would be epic to see how much power the combustion adds
That's one thing I'd like to know in a fair amount of these engine builds. How much force is he achieving from just air and fuel delivery VS how much thrust is the combustion actually producing?
He won’t do it because it’s likely the same and he knows it
Additional thrust was probably roughly 0.
When you do your jet engine builds like this one, I would love to see a thrust comparison with and without a chemical reaction. For example in this video, how much thrust are you getting with just the leaf blower vs how much thrust are you getting with the leaf blower jet engine.
My thoughts exactly!
My guess 1.5lbs leaf blower. 2lbs with engine.
@@martinda7446 even that is generous...
@@jjhack3r Ha, ha possibly yes.
This same thought had me here to comment.
IDEA: Improvement for Tesla Turbine
Create magnetic bearings to make the rotation completely frictionless.
You can buy ring magnets where the inside of the ring is one pole, and the outside of the ring is another.
Through the proper configuration, you could create a frictionless axle.
If you use aluminum plates for the rotors, you could probably reach amazing speeds!
LOVE YOUR CHANNEL!
It’s great to see you starting to work with metal more than just 3D printing
guy needs a machine shop
Ya I agree
Ideas:- make a rc plane with home made engines flaps, landing gear, alerons, vertical stabilizers, rudur, wings, fuselage, etc..
You mean something like this? es.wikipedia.org/wiki/El_vuelo_del_F%C3%A9nix_(pel%C3%ADcula_de_2004)
@The Game Shorts 🅥 ...
sounds like a lot of work. also whats up with the bots here.
@@multiarray2320 idk man
You could make an air frame and connect the jet and wings and let it fly to a high area and drop a capsule with a parachute
I’d love to see you make a thrust vectoring nozzle. It would be interesting to see how much steering you could get out of homemade parts.
Honestly, it could be relatively simple. Given a flexible high-temperature coupling, all you need are two pushrods connected to the nozzle, and you have full control over rotation.
A 50mm linear actuator can be had for about 28€ on amazon, and all you need is two of those and an arduino to control it all for the most primitive form. Of course, those are DC motors, so you need a linear enconder (or a linear potentiometer, which is easier to read and probably also cheaper) in case you want position feedback.
For a flexible coupling you could just use aluminium duct hose, as long as your exhaust temperatures are low enough, or you can actively cool the coupling.
YESSSS this would be so cool
It seems he's already chosen the people but you should definitely suggest this again
*reads title*
"Of course you did"
Good to see you
With summer coming I would love to see you create a solar concentrator with around the house items! Possibly with a parabolic mirror or converging lens, you pick!
3:35 that’s not quite welding as you’re joining your steel with a dissimilar metal. In this case it’s called brazing.
"well actually...................." 🤓
@@flappyBoi ur whatching a nerdy channel what did you expect?
@loser flappyBoi
Expert lvl idea: Add a nozzle with the ideal expansion ratio, and deal with the heat by regenerative cooling. For an even greater challenge, use an aerospike nozzle. This will make it so expansion ratios are a bit less important but it'll be much more difficult to regeneratively cool.
I'm not sure if the pressure ratio of the leaf blower is enough to worry about that.
Bell nozzles are pretty much only for changing the impedance of the exhaust to the air, this is done because the exhaust can only leave at the speed of sound so decreasing the pressure by expanding the nozzle can increase the exhaust speed. Also regenerative cooling is cool but it would probably be more efficient to just route some of the air from the leaf blower over the nozzle
@@KerbalChris Yes... Bell nozzles do increase the exhaust speed the larger the nozzles, but at sea level, eventually you start to run into issues(Flow separation, e.t.c.). Also I think it would be better to do regen cooling with the fuel since it's already at relatively high pressure in it's tank. Taking some of the leaf blower air to cool the engine would reduce the exhaust mass and/or speed and lead to a decrease in thrust and efficiency.
@@biohazardindustrieswr697 you notice how the engine flammed out when the leafblower was at the lowest setting? Thats what i was getting at with routing some of the air. Also flow separation wont be an issue at all, you’re still gonna use the expansion ratio for sea level and the ratio for that nozzle expansion and the throat wont contract the exhaust diameter too much
@@KerbalChris Yes, the engine did have a tendency to easily flame out. However, that in of itself is an issue. I believe the best course of action would be to incorporate multiple combustion chambers, splitting the air in between them, and keeping the propellant regen cooling. That would solve all the issues I think. As for expansion ratios and whatnot, as long as the ratio isn't too high, I don't think it'll matter anyways. Integza isn't spaceX. He isn't particularly worried about ISP and all that anyways. Just thrust.
Hey Integza, after watching your butane balloon demo I have a PPE (Personal Protective Equipment) recommendation: Navy flash gear. It's a set of elbow length gloves and a hood to protect your skin from flash fires. Relatively lightweight, breathable, and cheap insurance for your face parts and meat claws. You can find sets from the USN and RN relatively easy. Keep up the awesome jet work!!
Check for the operating range of temperatures your materials can withstand, there's no point in making a nozzle in aluminum, same thing goes for the welds.
As for the nozzle this is the case where you could try to use a De Laval (if you could manage to get the flow sonic in the throat any subsequent expansion would accelerate it and provide you with more thrust) , spot welding a sheet steel one could somehow work but I wouldn't trust it to be honest, with the production capabilites you have now there's not a lot more you can try.
Your aluminum nozzle was at 800K, that's the temperature at which it starts glowing red, so look for better welding methods if you want to have it survive
Source: boring aerospace engineer
P.S. f**k tomatoes
using the wrong materials is kinda his thing tho
He tried printing precise Nozzle’s that could withstand the temperature, and they were ceramics, but they leaked, due to the treatment process.
He can't print them at this size, and using wrong materials is sadly going to lead to failure, maybe he should get a tig/mig and weld thicker sheets of steel, with plumbing solder there's not a lot you can do as it's not made for rockets but for household pipes.
Hey you boring aerospace engineer, here is a boring mechanical engineer student.
What he did was not WELDING, just simply SOLDERING.
There starts the problem.
But the nozzle is not necessarily out of Aluminum?
The can that he used wasn't aluminium though. It was steel.
Instead of having a component that slows down air and thereby the combustion you could insert a pilot light instead, its like your spark plug system but waaaayyyy better and more consistant, it also shrinks the space it takes up.
Pilot lights don't do well with the wind. Even the largest of gas turbines use large ignitors.
It's actually kind of important that the air slows down for the combustion chamber, it increases pressure and also allows more complete combustion.
To improve the temperature you could channel a part of the air flow rate around the engine, so it can cool down the combustion chamber and the nozzle. This way you don't need additional control on the leaf blower.
You can use an external casing like a turbofan engine and a divergent nozzle at the outlet of the blower so it slows down the air and can be connected to the case.
Keep the “turn random thing into jet engine theme”. I’d love to see you try a pedestal fan, a nutri-bullet, heck even try a washing machine! Haha
Washing machine would be interesting, those thing have pretty powerful motors.
In almost every single integza video i get so entertained by one part of the project I completely forget what he's building, and then remember "oh yeah, he's building a jet engine"
i love how this is applicable to basically all of his videos😆
It would be very interesting to build a Fusor. It´s a small scale fusion reactor that can be made at home if you are careful of the high voltage.
And scare every nuclear authority in Europe? From the sudden spike in radiation emission?
uh what? is this a joke or fr?
@@avroarchitect1793 I don't think you know what nuclear fusion is.
@@user-cg3em4cw4f neutron radiation is detectable and actively searched for. Particularly to search for rouge nuclear programs. Also to initiate fusion without the immense equipment that you see in actual reactors you need a neutron source. Both the source and reactor generate a neutron flux. The source usually is radioactive in other emission types as well. I know how fusion works. The US government raided a house once when someone tried building their own fission reactor. They found him by triangulating the source of neutron and beta emission.
Edit
There is a system of detectors globally that hunt for radiation leaks from reactors and nuclear tests
@@avroarchitect1793 You clearly do not know what you're talking about. Building a fission reactor is far different due to the ridiculous amounts of radiation they give off. This is what a fusor is. en.wikipedia.org/wiki/Fusor
Notice it's listed as a popular hobbyist project. That is because small fusion reactors do not give off noticeable amounts of radiation and as such do not get picked up by the government.
I love how the construction techniques get more advanced with every video. Keep these prototypes coming.
I'd love to see a small personal hovercraft, jet powered or not.
Being nearly frictionless will not waste any of your jet's thrust.
What you could do is allow some of the leaf blower air to bypass the core. That would help keep the exhaust cooler and you might get a bit more thrust too. Real gas turbine engines work similarly.
Exactly my thought too! if he where to put the whole assembly in another metal tube, and use 3 small EDFs to create bypass stream. it would pick up heat energy and create more thrust
good day to random person scrolling down comments.
You too
Thank you, kind stranger,same to you!
@@DocGamerGirl this was 2 years ago 😢😢
Still helped me smile when I really needed it,for real,thx
My name is not stranger my name is Kira yoshikage iam33 years old
Iam not gonna say any more
Idea: make a water cooling system for the nozzle
I guess with that really high temperature, you need a TIG welding machine rather than soldering with brass. High melting steel can withstand a bit higher temperature than brass.
Each time I watch your videos, I get terrified about how close you come to putting your hand in the exhaust of your engines while trying to ignite them. So I propose that you try to make an automatic ignition using something like an Arduino and a solenoid valve. With that, you could maybe even control the throttle. Keep up the great work! Can't wait to watch your next video! :D
That spot welder works so well for something so simple! Really cool :)
4:34 R.I.P Wooden Table ...
Video suggestion:
Hi Integza you should try to make a rotating detonation engine. It's a really cool kind of jet engine!
Isn't that a helicopter blades spinning but In jets and sideways????
An afterburning jet engine?
Idea: make small jet engines, mound them on an rc plane that is made of 3d printed parts and launch it😁
Quick tip for cutting sheet metal. Make multiple shallow cuts in the shape you want to cut out and you don’t have to worry about cutting our shapes one section at a time.
Joey Jojo Junior Shabadoo
@ Ok lol
I’d personally love to see a reaction engine. Since reaction engines are still new I think it would be a excellent learning experience to see what is new on the rocket world. Since you can get a lot of acceleration out of reaction engines I’d love to see it on some kind of flying creation or the penny board.
This is a reaction engine? All jet/rocket propulsion is reaction.
Video Idea:
You could make an bean rocket engine, where you use beans as fuel inside the can
You should consider to use propane or a butane/propane mixture.
Butane burns well but has no power. Propane burns less well but has much power.
That's why LPG for gas in summer time has 60% propane/40% butane, and in winter time has 40% propane/60% butane.
The reason is that propane requires a higher temperature than butane to burn. In the summer the temperature is high enough to add more propane for better mileage but in the winter butane is added for better ignition.
Don't forget a flashback suppressor
3:00 that is called soldering respectively hard soldering because temperature is above 450°C else it would be soft soldering. Welding is *fusing* metal parts together ;)
When I see videos like this from people like integza or Colin furze, I'm always interested to see if it's actually more thrust than the leaf blower on its own
I was searching for other video's of rocket bikes and found this one ;)
ua-cam.com/video/k0V-ct_sdZs/v-deo.html&ab_channel=RobertMaddox
I think it almost certainly is.
I love the channel, keep up the good work! Although that wasn't welding, that was brazing.
Yeah I came down here to say the same thing. Just soldering basically. Integza, if you could get yourself some weldable sheet metal and actually do some welding, these would come out way more robust.
And brazing works in way lower temperatures which is why it melted under test. Actually welding thin sheets is a pain though, the spot-welder approach is a smart one
@@EeroafHeurlin Aye, if he wanted to try again he could reinforce it and try to make a design that worked with the spot welder, possibly have a pipe that fanned out on the end, spot weld that, another disk that could go over top of the welded fins or blades (not sure what to call them) with a larger diameter than the fins, and spot weld that as well. Seems a little overkill, but that might be the solution for what tools he has.
The "welding" you kept referring to is actually brazing. They're not the same thing: Brazing is basically beefy soldering. You're heating up the parent material until it's hot enough to wick the yellow brass rod between the two pieces. If you pick up a cheap TIG welder, you'll have a lot more success with the nozzle designs and you could ditch the spot welder entirely.
Idea: make a steering system for the engine. You could either use thrust vectoring or some external rudders like the V2 rocket had
@Don't read profile photo Cringey kid, you're probably begging for subs ...
I’m curious how fast this would go with just the leaf blower. Probably slower but I still wanna know. Keep doing these jet engine videos!
Came here to comment the same thing. It'd be a nice baseline, at the very least. ;)
@The Game Shorts 🅥 suffer
@@BenKDesigns Yeah
dear integza, direct some part of the air from the blowerr over the exhaust, so you might solve the over blowing issue and exhaust overheating problem at one shot and you may get extra propulsion meanwhile you increase the fuel efficiency, all you need is a jacket for exhaust and a hole on main tube to be coonected to the jacket.
Nice to see you back, alive and well😁
The "welding" problem is that you were hard-soldering (with brass?)
To proper weld you need you fuse the Parts, instead of sticking them together with a metal with relatively low melting point.
Anyway: another enjoyable video, though I still miss your facial hair 😜
brazing
@@Blox117 Since our friend Integza is Portuguese, and the Portuguese words for "soldering" (=brasagem) and "welding" (=soldagem) are quite confusing, I opted for "hard soldering". But you are absolutely right, it is also called "brazing". I've been brazing since 1973, when I built my first two-stroke exhaust, aka expansion chamber. (yes, I'm really, really old 😁)
Would be cool to see you run a jet engine off of hydrogen. Keep up the awesome content!
I don't think it's the most practical idea. See, Propane and butane can both be compressed into a liquid under relatively low pressure (up to about 15 bar).
In comparison, hydrogen has to be stored as a compressed gas, which means really thick and really heavy tanks.
In the past, we had a Volkswagen Polo that ran off of gasoline or natural gas (methane), and the methane tank took out most of the trunk. It was about four times the volume of the gas tank, and still the methane stored in it didn't hold as much energy as the gas tank.
Given that methane holds more energy per volume of gas, (about three times as much), a hydrogen tank at comparable pressure will only provide a third of the energy of methane. And if we're talking about hydrogen/methane tanks, we are talking about a few hundred bars of pressure, compared to the 15 or so that propane/butane need.
This also means following all the proper safety precautions for dealing with a multi-hundred-bar tank of a highly flammable gas. Gas tanks of that pressure are no joke, and if not handled carefully can easily kill someone.
something that might challenge you a lot is a water jet like the the ones on boats.
i don't hate tomatoes but the tomato lord is a jerk.
😁good luck if you ever do try this👍
IDEA: It would be cool if you made an engine driven by wood as fuel. Like a wood gas engine of some sort. Love your content btw.
Idea: make a solid rocket engine. You could make a star shaped grain of propellant and it wouldn't need any cooling if it's well designed. Just pure thrust!
He already did that & some further variations of it
@Don't read profile photoshut up
Lol love the goofy sponsor. Electric is the way to go... Unless you need to move cargo, or travel far, or use it as a support vehicle... But using 3x the energy and carbon emissions for the same output... They do that 👍
To go with one of the steam engines you've built in the past, you should try making either a Stephenson's or a Walschaerts valve gear
Idea for next steps:
1. Make a test rig to measure the output force of each of your rockets engines. Then you can optimize them using the data you measure.
2. Choose the best one to build a flying rocket
Bro, this is soo freaking insane!
I definitely wasn't expecting this, please continue this project!
Video idea: Now that you have lots of experience with all types of engines, make some kind of rocket with stages.
I'd love to see another video like this one, maybe use a different source of fuel (propane?) to get even more thrust. It was cool to see one of your designs produce this much thrust!
Propane is very similar to butane, except that it is harder to keep liquid, I recommend pentane for engines since it will not immediately become a gas allowing you to pump in very high pressure air for more powerful combustion
But something like octane(gasoline) works tol of course!
you can use heavy metals or alloyes to make a nozzol
or even tungstun
if you can melt it
I actually think most of the thrust came from the leafblower as oppose to the combustion,
despite it getting so hot.
That's probably to do with the exhaust velocity, of course higher velocity is higher effiency.
You know you can increase exhaust velocity whith a narrowing throat until supersonic velocity right?
(then you need an expanding bell nozzle).
Also more importantly I'd still say its running very oxygen rich,
hence the extremely high temperatures. The leaf blower added oxygen, but way more oxygen than you bargined for.
Yada yada. The oxygen ate the engine.
Something like 30% of a modern jet engine (more accurately a turbofan engine) is just pressure recovery,
controlling the inflow of oxygen to get a favourable reaction. Not too hot. Not too ineffecient.
Video Idea: build a Rocket propelled Hammer to Smash Tomatoes 🍅
I think if you used an EDF along with a compression stage before the combustion chamber you'd get more thrust, also use 2 different fuels, butane as you used before to rise the temp and once at high temperature use Jet-A. Hopefully you get around to seeing this I belive it would be an awsome build 🤙
suggestion: the backyard scientist did gas powering things that should not be gas powered so maybe you could steam power things that should not be steam powered.
P.S. if you like this comment please like so integza can see this.
good idea
@@jacktree9286 thanks
i would love to see that.
@@rubendan5563 thanks
Hey Integza : How about a rocket powered torpedo / submarine?? Tomato's float after all! ;)
so for a school project im making a jet engine and your jet engine videos have helped ALOT and well because rules nothing combustible or flammable, so i am making a cold jet engine, water and high pressured air, ive alerady got my first compressor fan done, ohh btw i dont have alot of tools so im making the fans and turbines with metal shears.
but your videos have helped alot to make this thing, that being from making the fans to the turbine, it has all helped
I'd love to see you make a reed valve style pulse jet. I think it's a good progression from this project.
Why not make a HHO jet engine using water as fuel!
Or use charcoal (the most common form of carbon to acquire) and sulphur and potassium nitrate (stump remover) as a solid state rocket fuel along with a simple metal aerospike nozzle and scale it up for your Grandpa's bike!
2:21 "liquid butane gas"
liquid gas...
You could go back to what I think is the root of this channel: trying to revive archaic inventions and apply them in new and interesting ways. Here's the pitch: Combining arc lamp technology, specifically in the form of a Yablochkov candle with the concept of an arc jet. Should be doable, maybe? And high voltage arcs are more than capable of tomato murder if that's a requisite.
I'm really curious about how much additional thrust you're getting with the butane burner.
The manufacturing skill is getting better and better
Idea: try and make the smallest turbo jet engine and see how it performs. Really curious if this is possible with your current equipment
I have a suggestion for your rocket nozzles. Try printing them with channels inside and flow liquid oxygen through the channels first so it cools it while running. Saw it in a video from Veritasium of 3d printed rockets.
(you probably saw it already tbh)
Idea is to biuld a jet turbine for a spinning thing, propeller, generator,etc
Hey Integza, I really like your videos. They really are inspiring although I really can't follow up with all your skilles.
I would love to see you building up a miniature of a car engine. But I don't know if its not too complicated with all the parts that have to be perfectly aligned and printed or build.
Nevertheless I think you next project will be lit
Can you make a sodium potassium jet engine based on thunderf00t's "Sodium Flamethrower to combat global warming!" video?
Put bafolds around the output of the flames to prevent flame out. Also the nozzle improves the efficiency of the engine by allowing the exhaust to go out faster than without the nozzle.
Would be curious how much the thrust would be improved by adding an exhaust nozzle with the right expansion ratio 🤓🤔🤔
Excellent work! 👏👏
Please give me 3d printer :) im poor and i cant buy my own ...
Its not free you need to make a good idea, no one is gonna feel petty for you so get out
Use leaf blowers and light weight materials to create a hovercraft (hoverboard of sorts) with a heavy duty trashbag skirt (much lower friction/forces to overcome than a bike) Mount your leaf blower jet turbine to that with some sort of swivel for direction control and you should have one cool ass/low cost vehicle.
I suggest building a safer test station outdoors to include stuff like a thrust bench, some bulletproof glass to hide behind, fire extinguishers, so you can go crazier with rockets without blowing up or burning down anything - safety first safety second and safety always !
Try build two stag sugar rocket with deploying parachute, fly computer and onboard camera.
use ducting to separate the leaf blower's air into two pipes, use one to feed the engine and rount the other around the outside of the flame tube, to cool it and produce extra thrust from the heated air (you could even eventually make an after-burner powered by the heated cooling air - eventually)
I feel like you should move to America, that's where all the cool people are, and its probably easier for you to get supplies for your projects. Love your face.
I come here weekly to watch 12:38, it's so damn funny
If you didnt know, this engine is often reffered to as a motor-jet, where an external motor is responsible for running the compressor.
There is few examples out there but a late WW2 project is the I-250 with a combined powerplant.
If built with a powerful motor and a well designed compressor, it is possible to get quite a bit of thurst. And while it does require some heat resistant materials, not nearly the amout that a turbo-jet does, in which the turbine blades and it's bearings need to resist the heat of the exhaust.
Video idea: You could take a methane bottle (like a lighter refill bottle) and 3D prinz a nozle with a combustion chamber, you would need a mechanism to release the gas, then you would almost have a rocket.
I have a good possible way for you to make 3D printed parts into metal. You can print them in foam or any filament that melts easily and then put the part in a bucket and surround it with sand to make a sort of mold. Then you can pour molten metal onto the 3D printed part so that the plastic melts away and the part which left is made out of whatever metal you use. You could make complex parts out of steel or aluminum for future rocket designs. I learned this technique from TKOR were they created aluminum parts using foam board.
Beautiful mountainy village spot, slow poke 😏😁. That bike must be heavy metal 🎸.
I don’t know a lot to give an outstanding idea for the next video but I am learning a lot! Thank you!
"Today is a beautiful day... Perfect for a J.... Jet Engine." I thought he was gonna say something else haha.
Integza has the comedic character of 3-4 people all in one. Unique yet still scientific. Best channel ever!
this genius deserves more likes, subs and views
How about directly supplying the engine with 70% - 100% oxygen by making another ring of tube smaller than the butane's so that there will be more combustion. The oxygen tank can be placed parallel to the butane tank (if the butane tank is on the right side, the oxygen tank should be in the left side and vice versa). Also, putting the spark plug control alongside the leaf blower control in either side of the bike's handle opposite to the butane and oxygen controls will be more convenient so that it can be operated by only one person.
Hydrogen can boost that bike even more!
2 of those engines on a little go-kart type vehicle with wings and control surfaces would surely be enough to get you airborne with a long enough run up
Integza! big fan here, maybe look into mini-metal lathes. Pretty cheap and can turn steel...
Me seeing leafblower: PUT IT ON THE BACK OF THE BICYCLE!!😩
Integza seeing leafblower: Lets make a Jet engine and put it on my grandpas bike!🙌🙌🙌
I know this suggestion is late it might not even be seen, but a big, a very big part of the thrust comes from having a nozzle.
The fabrication might be the greatest limiting factor for you, but maybe you can try a de laval nozzle or just a converging nozzle and see what works best for you.
Hope the best for you!!
You could build a drone with rocket engines instead of propellers.
Where is your SPOT WELDER video? I could not find the one you reference 4:02
You should make it BIGGER!
Hi Integza, you're doing a great job wish you all the best
Dude, you are crazy, I like it 😊