I've worked on aircraft and turbine engines for 30 years, and never thought I would see what one looks like on the inside running. Even just a basic one like yours is pretty neat.
Thanks, I wanted to start simple, but I absolutely need to do a multi-stage axial... No doubt. It's tough, this one has been 4 years in the making simply because I had to develop the material that I'm using here to make it possible, I also use that same material for all of my other see-through engines, but I haven't patented it because as you may know I need to release the recipe in that case, and the market is very small for this only for educational use. But then if it's publicly used and it fails for instance in a school or something like that, I could have a big problem on my hand. 😬
@@WarpedYT do it 👌20 year ex RAAF F/A-18 Hornet 'Frumpy' here (Airframes & Engines Tech). Do a mini General Electric F404 with functioning Afterburner and Variable Exhaust Nozzle 🤤👌
Welcome to the 21st century, where geniuses casually put together jet turbines in their garage using the most amazing private tool array and broadcasting all of it for the world to see. What a time to be alive!
8 years ago Colin Furze made a working jet engine out of an old turbo, a loo roll holder, a toilet brush and some duct tape. I know it sounds like I'm quoting ironman but it actually happened and to this day it's still one of the best videos on UA-cam.
@ARocketScientist We live in the best of times we live in the worst of the END TIMES! Jesus & Mohammed warned us about the Anti-Goylumites & these the climate change END TIMES with the book of REVELATIONS & the cause with the 7 north stars of the PRECESSION of the Alpha/Omega equinoxes he held in his hand. 72 virgins years x 360 = 25,900 the length of the Great Year. Prey to the east because eclipsing the galaxies double torus electromagnetic/gravitational plain is going to pull the oceans around the planet east to west 800 mph at the equator because the planet rotates west to east 1,000 mph at the equator. TicTok 2033 conjunction of the planets an every 40 years for the millennium it takes to eclipse the Milky Way Galactic Equator.
I mean these hobbyist jet engines have been around for like 30 years now, it's not that odd it's just you see it now thanks to the ease of digital cameras and high speed internet being common.
Would be interesting to get a gauge on the next run, see what the thrust output is too. (Yeah I'm greedy but this guy's smart enough to add that without breaking sweat). State the obvious *Brilliant vid*
As a helicopter pilot there's no sound more pleasing than the startup of a jet turbine. Having watched your video I can now truly grok what is happening in the engine in pre-start, initial ignition, complete ignition, and the spooling up as the cycle completes. Wow, just plain wow!! Thank you!! As someone has already said, you're a very talented machinist/engineer. As an A&P has said this is accurate and useful. And now you have it from someone who power up, injects air to start the cycle, introduces fuel to start the ignition, and enjoys the resulting power out the other side!! Also seeing the power come from the fuel and not massive amounts of air is a double-take worth its weight in gold. :)
Is it true that helicopter engines are always running at or close to 100% power and just changing prop pitch to go up and down? I had always thought that "give it more power" was exactly that, more rpm, but someone told me that collective is just pitch.
@@roushstge2 This someone was right, it is only pitch to change the lift. If you change the rpm of the engine it affects the behaviour of the helicopter during the flight. This is what you don't want. Stable rpm means stable flight. I'm flying rc-helicopters, at least here it is this way, I guess in real helicopters it will be similar.
@@genekisayan6564 Scientists create theories, engineers bring them to life. You need to use your imagination! Mechanical engineering is more art than science, yet still needs to follow strict rules of logic. Otto created internal combustion engine without seeing through its walls, and so did Diesel with his engine.
I'm a 20 year Airline Captain.... every training class I've ever attended in my career falls well short of what this video teaches. to view the actually work inside is mind blowing. thank you for dedicating your time and resources to reach other. God Bless...
To be fair, this isn't half as complicated as a commercial turbo jet engine and is at best able to show the most basic concept of function of this equivalent. But i agree that it's quite interesing to see the workings in this little thing.
You should probably find some better training classes then, because no matter how cool this is (which it is) it doesn’t really tell you much at all about the working of a jet engine.
I'm a recently retired middle-school Science teacher. I've "known" how jet engines work for years...as much as one can "know " something from looking at drawings and photos. To be able to see the inside while it is in operation was just incredible. Thanks for making and sharing this vid. I wish I'd have had it while I was still teaching.
You are still teaching, please have no doubt about. A good teacher gets better whole his "local" life and beyond. You do remember your own tutors. I bet you did not stop learning from them even for now, and they will continue teaching your students along with you. It's not "a man gets smarter" it's Socrates and Archimedes have been in the class all this time. "I am a clever man on my own" - what a greate phrase for a comedyan:-)
"I'm glad it didn't blow apart." I got a pretty good chuckle there. As I was watching the thing spool up to over 100k I was thinking "this guy's five feet away from something that could end it all in less than a blink of an eye if it all went to poo". I respect somebody who's got that kind of confidence in their own abilities and can demonstrate it for our benefit. Well done.
When I noticed he was several feet away from the engine, I thought it was a bit of overkill… until I realized this wasn’t a toy engine (unlike another video I watched yesterday showing assembly of a Japanese turbofan engine kit made from metal parts). It may be small, but if something went wrong, you definitely wouldn’t want to be standing right next to it.
120k RPM fan disks would be deadly at almost any size...this man has confidence in his work! Also, that adorably-tiny jet engine was amazing to see inside like that!
I flew jet airliners for over 12,000 hours since 1984 and of course never got to see a burner can in operation. Very nice craftsmanship building it. Thank you for a very informative video!
@@WarpedYT liquid nitrogen is worth using as the 'combustible' as it does not cost much and myths about it not be energy rich enough persist.. but instead of fire generating heat you have to drastically disperse perhaps with room temp thermal superconducting materials or some sort fo nano structural vapor skin... when air is sucked in at great volumes it does get hot but can it provide enough heat to boil the nitrogen comparable to the work of compressing the air? I know it can be done because the extreme pressures the phase change generates make burning fuels incomparable. The challenge however is not overcooling air as I noted in other comment. It will condense water of course and that water is a good eject if sent out fast enough but creates inelasticity of course even expanding if toomuch mass is shed (any crystals formed transferring mass to heat of course right?) Or can you by agitating the water vapor sufficiently maintain it's mass despite it being cyrogenically cool? I doubt that!!! If you managed to do that the exhaust gasses would be icy literally and provide a ground effect maximising sought turbulence at backside of jet snow forming and those crystals being like parachutes to push off of a real brain riddle right! they would constrain atmosphere for sure! Exhaust gas crystals only happen when you boil not burn your 'fuel' a fuel our atmospher is mainly just preboiled like lithium batteries right? capable of being reboilable not just good enough for lettuce bags to turbo profits by displacing oxygen oxygen is not needed for jet engenies nor is water vapor a threat nothing boils nitorgen better then warm rain snow of course in freezing air would need a filter that prvents it from getting into nitrogen boiler parts of turbine however snow compressed does melt forming eject that again snows all this molten not just nitrogen around us but practically plasma already and we care about our bodies when judging it's value it's energy so hot!!! so capable of releasing potential energy of snapped nitrogen molecules by increasing there mass!!! Boiled nitrogen is heavy and superheated by sun it has plenty of bonus heat to increase i wonder what the ratio of nitrogen snapped at 40 degrees or say 5 degrees celsius free nitrogen is... how many grams of liquid can be melted by how many grams of free to mine air??? i feel so ignorant not knowing precisely and lacking the equations on my watch ocean surface howvering hypersonics have hot humidity always to work with so far less volume versus dry air is needed to boil and spin the turbine if spinning is even right the densnapping process we must have open minds for again the free molecule is heavier not lighter ice is lighter then liquid water not just by volume but atom duh it is nuclear energy that is released when atmoshpher nitrogen vapors shed heat into liquid nitrogen this nano process of seperativing the N's far enough do all the work we need done if only, if only the immense power of those forces can be harnessed. When heat turns into mass WATCH OUT this other side of nuclear is our greatest nastilly kept secret steampower was replaced by octane nonsense talk always corrupting is the song of jet fuel burning petroleum is to sell it duh with almost none of us owning any no a planet rich with heavy nitrogen for free omfg? or you got no courage? are afraid of texas or going kashogi? live man! FIGHT
question when the jet engine starts what keeps the blades spinning? is it spinning because of the vaccum of air coming in caused by air being pushed out of the back? i understand how the electric starter compresses air enough for the fuel air ratio to be right but my imagination is limited to my knowledge of car engines
Fun fact: I interviewed with P&W in Mass for a ceramic coating robotic programming job a few years ago. I aced the interview but turned the job down as it didn't pay enough and finding a place to live in that area was difficult.
Retired from Pratt and Whitney as a mechanic building the F100 after 23 years only to relocate and now do the same for GE's F110 and wanted to say thanks for the video! I've seen these engines at test cell but it's so cool to see one like this with a clear cover to actually see it in action. VERY IMPRESSIVE.
Man really just said "So i built a jet engine in my backyard" An unfathomable amount of respect good sir, very interesting and well explained video to, all the questions i had you answered throughout the vid!
5:49 That flexing demonstrated the internal pressures better than anything I've ever seen and thats after 20 years as an aviation professional with a masters in aviation and space sciences. Very well done!!
Just curious; you say you’re an aviation professional with a masters in aviation and space sciences.. what does that mean? Are you a mechanical engineer? Aerospace engineer? What was your title
@@Macattack7 Hey Tony, Thanks for the question. My degree is non-technical which means I can't claim to be a scientist or engineer sadly. But during my undergrad work I still had to design a mathematical model of a jet engine, I used excel. Matlab wasn't a thing back then. Also had to get real familiar with things like GPS and GloNASS, aerodynamics, orbital equations etc. I am a pilot with with 2 certifications, private and unmanned. My grad degree was less technical. The first half of it focusing on airline operations, second half focusing on space exploration. As my thesis I researched and wrote a paper on ethical governance of space based resources and off planet colonies. Really it was just an excuse to research how a Mars colony would be governed. Work wise, its all been aviation. Started my career at a flight school, moved on to a high altitude research center where I conducted cabin pressure research for boeing to see if lowering the cabin altitude made for better pilots. A short stint in operations or KTUL, then on to aviation operations for a part 135 operator. Currently i teach drone law. Built and flown two aircraft, one of which was experimental (the better of the two I might add, lol). Been around jet engines my whole career, even got to fly a B-17 (not jet obviously) for a summer during airshow season, and at one stop flew it with Buzz Aldrin!!! A lot more experiences in the last 20+ years but those are the highlights. Sorry for the long reply, but thats what it means. Still mostly interested in space though. Its just really hard to get into unless you have the engineering title.
As a design engineer that mainly work on military propulsions working for GE, gotta say this is one of the coolest videos I've ever seen and I get to see the real thing in person. Now I want to build one in my basement
The fact you say the word “coolest” is an odd choice of word for a propulsion engineer. As someone in my 50s with many years experience in technology, petroleum and the like, I would certainly not use such a young persons trendy word.
As an aviation expert, NASA engineer, who has worked 200 years on the top secret SR-78 Aurora from the future and returned back in time just to write this comment, I must say that this is quite impressive to see in action.
The parts about the "200 years" and the "SR-78" seem legit. I can't prove those facts wrong. However, there is no such thing as a Nasa engineer. It's NASA (regardless of what you might have read in some goofy British writer's style guide).
I have been an A&P mechanic for over twenty years....Best representation of what happens in a jet engine I have seen to date. I really enjoyed the slow motion segment showing how the engine expands and contracts along the rotational axis. Bonus points for a new video showing how the entire engine responds to torque.
100%!! My buddy works at Pratt, and I would laugh when he talked about the 4 main departments in the factory. Suck, Squeeze, Bang, and Blow. With the visual of the video, it's so clear now. Just like that see-through engine! LOL
5:49 this is why I'm always amazed at how jet engines are constructed and mounted. The immense pressure they create on themselves while being bolted to, and pushing, a 160 metric ton thing from standstill on the ground to airborne.
@@magnusthoegersen8974 what in the goddamn fuckin hell. For reference anyone that doesn't know, a regular gasoline car engine runs at around 2,500 RPM even at highway speeds. At 7,000 RPM and up, you're risking engine damage
I am a retired combustion engineer and have worked on all sorts of burners from 1 to over 800mmbtu/hr and your video is the most awesome I have ever seen. I am looking forward to seeing more of your videos!
Thanks so much for this. My father designed jet turbines for General Electric from 1952 to 1990. He started when jet engines were primitive, prior to the high bypass turbofan, and retired at point when the technology had matured. In 1952 it was not uncommon for jet engines to--how do I put this delicately--explode. He has dozens of patents in his name, and is one of the relative few to be inducted into the GE Aviation Hall of Fame. One of his major projects was the TF-34, which powered military and civilian aircraft, but is probably best known as the powerplant for the A-10 Warthog. He is still with us, and I am going to show him your model. He'll get a kick out of it!
Great story! He will probably never know his full contribution to this world, but obviously it was quite significant. A-10 Warthog one of my favorite planes! ✈
Born and raised in Tucson, AZ many days and nights hearing seeing the majestic A-10 Warthog flying over the city to Davis Monthan. I love the flying tank. Thanks to your father and many more for such a fantastic piece of Aviation.
I'm impressed that the bypass air was enough to keep the case from burning. It was also neat to see the jet fuel burning with a blue flame through the openings at the higher power settings. It just goes to show how intense the combustion is.
@swagfish1996: not all of the air in a turbojet engine goes directly into the combustion chamber, some of it bypasses the primary stage and is introduced downstream to cool the engine and provide additional air for complete combustion. I think that's what the commenter above you was noticing. With that said, it's definitely not bypass air in the same sense as a turbofan engine, because it's all still going into a later part of the combustion chamber. But I suppose it could be seen as bypass air from a certain point of view. One thing I will say is that supersonic turbojets have bypass ducts because that's where the excess airflow from the intake goes at supersonic speeds... but none of that flow enters the engine core.
@@ErickCTo clarify; In a turbojet, air that bypasses the combustion chamber rejoins that flow before the turbine. This serves to moderate the temperature of the gas hitting the turbine so the turbine doesn’t overheat and fail. This is called “internal bypass”. Turbofans do this as well, but the difference with a turbofan is that they also have EXTERNAL bypass air. Most of the air coming off the fan bypasses the engine core completely and is only used for thrust.
Did you notice the combustion on idle, then as you increase power the red ring slides to the rear of the can. Combustion further and further down the combuster , it's getting close to the turbine blade. Can you lengthen the combustion can and control the location of the combustion.?
Brilliant engineering and design work. I am a retired aerospace/electronic engineer mainly working with communications satellites at TRW, and can appreciate the demonstrated professionalism involved. Too bad I don't have YOUR tools for design work! CAD/CAM wasn't even thought of when I was in college. It was all done by pencil and pen on drafting tables. Kudos to you!
Pretty cool being that I was a jet engine mechanic in the Air Force but also worked in the balance lab as a civil service mechanic where I balanced J85-21 turbines and compressor rotors for the F-5 that the navy used for the top gun program back in the late 90’s out at Edwards AFB. Great video.
Im currently in school for aviation maintenance and had no idea how jet engines worked. the demonstration here is top-notch. for something made out of parts so simple to perform a single task it is absolutly breathtaking thank you for this video
@rickyanthony The engine isn't what you hear, it's the thrusters. And I said this video helps contextualize the various, separate sounds within the overall sound produced by the jet.
I can't imagine how much money this guys skills must be worth on the open market. I can't see there being many people out there with the skills to manufacture a jet engine from scratch. Really impressive.
I love the micro balancing machine! Definitely no short cuts there. Would be worth a deep dive for the community on the effects of an unbalanced blisk at very high rpm. Good one!! I 👍
No it wouldn't. The vibration just kills the bearings, you don't need a deep dive to know the effects. What are you going to see on video? A tiny bit of radial movement?
This is one of the most immensely neat things I've ever seen. As a machinist, I'm as fascinated with the designing and building of that fixture and case as I am with the jet itself.
Amazing. My grandson is an aspiring pilot and is obsessed with jet engines. I can't find any working model anywhere other than "toy" models. This is really a stellar build.
Ha! I think not.... This is no ordinary guy and that definitely isn't your ordinary garage... He's more than likely an engineer for NASA, or Boeing, or something of that magnitude....
u saying it too casualy like some random guy can do jet engine in his garage at sunny day lol. Obviously dude is not normal guy like us and his garage is not a garage for parking his car lmao.
@@joeyditcharo419 I would like to introduce you to integza who literally 3d prints jet engines, if you have the right 3d printer then you can download his plans and print one yourself. I believe they require other components but a normal person could easily make one themselves with machines and parts that a normal person could easily get.
@@joeyditcharo419 You don't need to be an engineer at NASA or Boeing in that matter. You wouldn't build an entire engine there anyway but a specific dedicated part or something.
Well done! Not only did you show off a beautiful sounding and functioning engine, but you also designed the parts, programmed the Gcode for the CNC, CMM the finished pieces, kept the rings round and flat within tolerance after machining and assembled everything to complete a little jet engine. After all said and done it works! Very good stuff 👏 👍
Very well done. I love those experiments. One can see the temperature distribution of the combustion chamber at several stages of the run up. Thank you !! One remark from me: dependend on the smoke or fog system you use the compressor heats up the visible parts of the fog so that the vaporize or in case of dry ice sublimate. So the flow after the compressor is hardly to be seen.
I worked on repairing the turbofans and many other parts for jet engines from 1991-1995 but never had the opportunity to see how they work and operate internally like this. I wish I had the skills, tools and ability to make something like this. I would have a LOT of fun with this! Blessings and thanks for the awesome video!
What an amazing accomplishment! I've been an automotive technician for 30 years and never dove into understanding jet engines because I couldn't see what was going on inside of them. Thanks for such an amazing video!
"Wheeww THAT'S HOT!" was a Eureka moment wasn't it?! When I flew in the Navy we didn't shut down our turbo shaft engines immediately but let them operate at ground idle for a short while for a brief cool down. This prevented the turbine blades from acquiring negative characteristics from a quick cooling off. Consider doing this on your small engine.
Yep you are absolutely correct, the only reason I shut it down to briefly like that was to finish off the scene, normally I let them cool down first for the exact reason you said. Thanks!
As a long time mechanic working on four stroke engines I've always had a fascination with military jets and therefore jet engines. It's really cool to see what goes on inside one. I thought that there would more heat and flames going on outside and surrounding the combustion can because I always thought the compressed air went in the front of the can but now I see that the air from the compressor surrounds the the can and that mass of high pressure air surrounding the can forces the air into the combustion chamber from the outside through those holes in the can and also acts to contain the combustion to the interior of the can. Sometimes a visual approach to something conveys wat more then an text explanation or an animation. Great video.
That air entering into the can from the outside is known as dilution air and its function is to keep the can from melting. It keeps a layer of air flowing between the flame and the can housing otherwise it would straight away melt within minutes. It blew my mind when i read this. Just the sheer simplicity of this solution.
As a Jet engine mech on F111, F15E, F16, and U2R/S acft that was amazing. The mechanics who have worked teardown and buildup know what happens but in 20 plus years I never got to actually see the flame in a combustor... AB yes... core engine never. I was amazed by the raw numbers... over 90K RPM and over 1000 degrees EGT/TIT... so freaking cool
I knew the fog would atomize in the engine and we wouldn't see it, it's the same with jet engines in clouds or rain. However I'd never have guessed that the plexiglass or glass see-through casing would not melt. I thought this would be on of those "fail" videos where the thing comes flying apart when the plexiglass melts. Great job on this.
That is just awesome. Someone like you can build a jet engine in a garage and show it. Thank you for doing that. I finally get to see the inside workings of a jet engine. Just amazing!
Outstanding. I'm ex-RAF aircraft engineer so personally very at home with the technology here but... what a way to demonstrate a jet to the general public!! Excellent!
This is way out of my league, and that's why it's so fascinating! I didn't even think that someone could build all of this at home...! You blew my mind.
Fantastic...held my breath as you cranked it right up...thanks so much for helping millions of us realize how much we wanted to SEE INSIDE A JET ENGINE at 130,000 rpm.
Thank you so much! I was having the hardest difficulties with my physics class, and I didn't understand gas turbines at all. Upon finding out that gas turbines are also jet engines, I watched this video. This gave me a full conceptual understanding of my class, especially at the beginning when you explained the four-stroke cycle in one cylinder. I highly appreciate it, thank you so much I was flunking out of my class but this got me an A!
I've always wondered how a jet engine looks like when it's running and thought of someone to do a transparent one for demonstration. This video is the answer. Thanks, man. God bless!
Very cool and fun to watch! My two cents: the thermal expansion of the aluminum frame (the longitudinal pieces on top and on the bottom) is much higher than the glass case. So, as it heated it wanted to grown longer, and the glass did not nearly as much. That's why I think it separated somewhat pulling one of the gaskets with it. Probably some of the other 2500+ comments said the same. My fear was the glass shattering! Now, even if it did not this time, with multiple cycles on it, it still may so please continue to take all safety precautions with this engine.
Ohhh definitely, if that glass would one day break...while the jet turbine full in action.... as you said in video the combustion pressure will accelerate the broken glass pieces like shrapnels.....I imagine a horrible deadly accident. Lab style protection glasses won't be sufficiently in such case. Glass pieces are flying bullets then. UUUUU.....what a FKing horror would it be in such moment to stay 3 meters away with nothing in between. A TRANSPARENT PROTECTION PANEL LIKE THOSE USED IN LABS TO PROTECT SPECTATORS WHILE DOING CHEMICAL EXPERIMENTS..... LIFE SAVING. Might be the nxt video to make that glass BREAKING WHILE STAYING REMOTELY IN THE SAFE BUNKER. PS: DEADLY ACCIDENT HAPPENED WITH FLYING GLASS SHRAPNELS WHEN SOMEONE PUT ONE OF THESE LAVA WAX LAMPS IN A MICROWAVE.
@@ronscrypt2go499 I imagine a few hundred numb nuts who didn't read these comments are probably out there building/testing these engines while wearing only safety goggles for protection😳
There's no way that's any kind of glass. Unless it's laminate borosilicate. Glass likes to explode into lethal debris. With something like this, you want your failure mode to be phase transition, not rapid lattice decomposition.
@@scottrackley4457 True! His material seems to be a plexiglas or Lexan cylinder. These materials won't shatter, but with enough heat will weaken and reshape. Pretty amazing little demo !!!!
BRO!!! you just helped me understand why the TURBO FAN is so effective ... it has all that power to spin the shaft which they harnessed to actually move a huge volume of air.
That was one of the two interesting things that I noticed. It makes sense because the intake end of the combustion chamber is cooled by the incoming air, so temperature increases in the flow direction as combustion adds heat. The other interesting thing was the thermal expansion which the builder noted in the video.
Back in the day...I was a Voodoo (RF-101) flight line mechanic working on the J57-13. The sound of your engine definitely brought back memories. Great work!
I was waiting for the see-through hot section case to melt too. I saw the seal on the rear coming out. Cool project. It must be nice to have the laser cutter and the balancing machine. I built jet engines for 42 years. The impeller compressor is old school. I used to build them on the J-69 engine.
If my knowledge serves me correctly. The type of engine is a centrifugal engine. I struggle trying to remeber the type that are common on todays engines. I just remeber turbo jet or turbo, shaft and or fan engines. I know that there were two types produced. The Meshersmit 262 had a jet engine similar to this model jet engine. If my memory serves me correctly that is. Most general aviation helicopter engines like the bell jet rangers have the same compressor design.
@@-_James_- That I had already knew. The engine that is in the video is a centrifugal compressor engine where it diverts the air towards the outside then into the combustion liner. The most common type today is where the air is goes through the different stages from low compression to high compression then into the combustion chamber and liner. I just don't remember what the technical name for that type of engine is?
@@IJsbeer74 Thank you Agent JayZ.. the other most common type of turbo jet engine compressor is called an Axial flow compressor which has the different stages from low compression to to high compression befoe entering the combustion case and liner. The RC model engine in the video os called a centrifuge flow compessor which only has the single stage. Both are turbo jet engines. The centrifugal compressor is an older design. That engine, the full size version was a German design and was used in the Meshersmit 262. Now the common turbo jet, turbo fan engine as well as some turbo shaft engines are Axisl flow engines.
I'm an aerospace engineering student about to go into 3rd year and this video has put a huge smile on my face. I have a huge fascination in aerospace propulsion, specifically turbojets and rocket engines so yeah... awesome stuff!
I'm in my third year (aerospace engineering) and feel the same. I've been obsessed with propulsion too. Glad there are lots of people like us out there trying to push the world forward.
This was an absolutely awesome video. This is terrific for pilots to understand their jet engines better. I fly a jet and this was helpful. Thank you so much!
As a science teacher, gearhead and friend of a couple engineers, I understood the basics. But this was so informative and interesting. I’m also amazed that one can basically build your own jet engine! Thanks
This was a REALLY impressive demo, and showing the step by step manufacturing process in your shop really made it 100% more interesting. You are a very talented engineer and machinist! Thanks for sharing this awesome video! 😊
Yo Matt! Yet another great showcase of both the complexity and simplicity of a jet engine. Thank you for always looking for creative ways to teach amazing mechanical things my man!
Thanks and your welcome, this one was 4 years in the making for various complex reasons but mostly because it took me a very long time to develop the material to use for the cylinder.
I found this video very interesting. When I was in the Marine Corps from '79-'83, I worked rebuilding the main jet engine for the Harrier for 3 years, then the Gas Turbine Starter/Auxilary Power Unit for a year. I enjoyed working on them very much. The balancing of the fan and turbine was interesting. That was a good thing to show that, because I don't think some people understand how fast a jet engine fan and turbine roates. Great concept and great video.
@@adamk203 they are also full of sensors and all connected to the internet. So a slight variation is caught long before there is a risk of engine failure. That way they can with confidence run it 24/7
Extremely impressive skill level and engineering ability. I used to work with Rolls Royce engines and when he demonstrated the process of balancing the rotor it brought back a ton of good memories on the assembly floor. His equipment and knowledge of operation makes this video even more outstanding. A++
As an engineering PhD that had worked on special purpose machines, I must admit that this is one of the coolest works that i have seen. I will be looking forward to the next video that includes the start up mechanism. You have just gained a subscribe. Thanks for sharing 👏🏾
It's so cool to see professionals excited about this. You could know how something works, worked on them, used them for decades...and still blows their minds to see inside it as its operating. Great video!
I think it's safe to say that it's more amazing how you made this miniature emgine yourself than how RR makes a normal size one. Bravo to you sir, this rocks. (and, I kept expecting that whole table to start to move forward) You are brilliant, awesome job 👍👍
As a helicopter enthusiast, I've always loved the startup process of the jet turbines - there's nothing better than hearing the engine "catch" and take over from the starter. It "lifts" the power away from the starter, and then you release the starter to hear just turbine - such a beautiful sound. Now I can finally see that process in action from the inside!!! thanks for making and sharing!
My higher education thesis was to research and develop new high temp materials wrt to existing Ni alloys for impellers and other parts inside the combustion chamber to increase the jet engines' efficiency. Here I clearly saw how temperature increases as hot gas travels through toward the exhaust side, and it was a thrilling experience for me. Thanks a lot for sharing this experience.
Having 3 radio control turbine jets myself, (not ducted fans), this was incredible to finally see inside. It's like magic. I was taught that these were hybrid engines going from radial or centrifugal flow in to axial flow out. Really enjoyed your video!!!
We had something similar in A&P school. The core was exposed and would turn using battery power. Nothing even close to this cool. I wish all A&P schools could have something like this to demonstrate turbine power. Great Job
There have been several comments about the amount of airflow. A manufacturer of similar engines (there are many almost identical engines available) gives specs for their equivalent size (the P130-RX from JetCat): _Name:_ _Value_ Pressure ratio: 3 Mass flow (kg/s): 0,3 Consumption Full load (ml/min): 441 @ 130N Consumption idle (ml/min): 100 Weight [g]: 1326 Dimensions of the diameter (mm): 99 Length (mm): 284 Exhaust gas temperature (°C): 490-720 Idle speed (1/min): 40000 Max rpm (1/min): 127000 Thrust at idle (N): 4 Thrust @ maxRpm (N): 130 Exhaust gas velocity (km/h): 1560 Exhaust gas power output (kW): 28,2 SFC @ maxRpm (kg/Nh): 0,185 441 ml of kerosene is 355 g, and 355 g/minute is 6 g/second. So that's 300 grams of air and only 6 grams of fuel flowing per second, a mass ratio of 50:1. To burn kerosene completely requires 15.6 times as much mass of air as of fuel, so the engine is moving about three times as much air as it needs to burn the fuel; that's excess air, and that's normal for a turbine engine. The thrust results from increasing the momentum of the air; the energy to do that comes from the heat of burning the fuel.
A basic see thru model like this can help aircraft engineers understand what's REALLY going on inside a jet engine, big or small. I'm no engineer myself but I admire the stuff they do to keep the world running.
In the midst of so many depressing issues going on in the World, this video is captivating, interesting, and inspiring. Thank you for sharing your creativity, and awesome machine shop skills.
5:35 Does utterly brilliant job building a see-thru jet engine using state-of-the-art technology and years of experience, and then, eschewing the safe use of an infrared thermometer, gives us his best Nascent Ape-Man imitation from the opening of the film "2001: A Space Odyssey" by putting his hand directly on the thing to see if it's hot. Really spans the timeline there.
Probably the coolest most shocking (but logical) part for me was seeing how ~rapid~ thermal change on the compressor. The higher the RPM, it “compressed” the cold air/hot expansion *line* in the center of the compressor. Wow.
Very very cool! I was thinking the acrylic tube would melt but I guess the amount of cool air being pushed through is just enough to keep the temp low enough to prevent melting it. And yeah the pressure is amazing how it expanded enough to allow the gasket to blow out. Maybe a couple more horizontal brackets to help keep it together.
Wow, amazing, not only the "toy" itself, but the builder! Who would have thought to build something like this, only intense curiosity and dedication, congrats👏
This is super neat to see all these components working in small scale, much thanks! I work as in engineer in the aerospace field where I'm responsible for the production of a few jet APUs but we also build the Blackhawk heli engine as well as the M1 Abrams tank engines on site. Those guys are a bit larger scale and you should see the airlflow testing on those suckers. Keep up the amazing content!!
I was a flight cadet in the mid-seventies and studied jet engines. This is amazing what you have shown so beautifully. Wish you had given some figure for the thrust. Great job!
it just feels like: I-always-wanted-to-see-a-jet-while-it's-running moment and this is easily already one of my top videos of 2022 so far. holy sh*t. thx!! - can't wait for the next video, with the see-through combustion chamber
0:28 - The rotor's radius is 75.0 mm 8:01 - It reaches a peak of 127,000 RPM Circumference of circle = 2πr = 471.239mm Velocity of blades: 471.239 mm * 127000 rpm = 59,847,340 mm/m The intake blades were spinning at 59.8 km per minute!!! That's 3,591 km (2,231.2 miles) per hour!!! From Los Angeles to Charleston, SC. In one hour.
To add to the insanity of the units, 3,591 km/h is almost Mach 3! The jet engine is an excellent example of the apex of engineering right after nuclear reactors
I've worked on aircraft and turbine engines for 30 years, and never thought I would see what one looks like on the inside running. Even just a basic one like yours is pretty neat.
Thanks, I wanted to start simple, but I absolutely need to do a multi-stage axial... No doubt. It's tough, this one has been 4 years in the making simply because I had to develop the material that I'm using here to make it possible, I also use that same material for all of my other see-through engines, but I haven't patented it because as you may know I need to release the recipe in that case, and the market is very small for this only for educational use. But then if it's publicly used and it fails for instance in a school or something like that, I could have a big problem on my hand. 😬
@@WarpedYT Quartz. It's quartz. C'mon.
@@WarpedYT
Yeah it's Quartz... no wait sapphire....or transparent aluminum!? 🙂🇦🇺
@@WarpedYT do it 👌20 year ex RAAF F/A-18 Hornet 'Frumpy' here (Airframes & Engines Tech). Do a mini General Electric F404 with functioning Afterburner and Variable Exhaust Nozzle 🤤👌
@@WarpedYT Then release it for wider study?
Welcome to the 21st century, where geniuses casually put together jet turbines in their garage using the most amazing private tool array and broadcasting all of it for the world to see. What a time to be alive!
8 years ago Colin Furze made a working jet engine out of an old turbo, a loo roll holder, a toilet brush and some duct tape. I know it sounds like I'm quoting ironman but it actually happened and to this day it's still one of the best videos on UA-cam.
@@Tossphate Colin Furze is a man of his own class, that's for sure
@ARocketScientist We live in the best of times we live in the worst of the END TIMES!
Jesus & Mohammed warned us about the Anti-Goylumites & these the climate change END TIMES with the book of REVELATIONS & the cause with the 7 north stars of the PRECESSION of the Alpha/Omega equinoxes he held in his hand.
72 virgins years x 360 = 25,900 the length of the Great Year. Prey to the east because eclipsing the galaxies double torus electromagnetic/gravitational plain is going to pull the oceans around the planet east to west 800 mph at the equator because the planet rotates west to east 1,000 mph at the equator.
TicTok 2033 conjunction of the planets an every 40 years for the millennium it takes to eclipse the Milky Way Galactic Equator.
I mean these hobbyist jet engines have been around for like 30 years now, it's not that odd it's just you see it now thanks to the ease of digital cameras and high speed internet being common.
seems to be fake
My deepest respect for those four screws holding this little beast
For real its the only think I was thinking about lol, if they failed this would have been a different video. Just Imagine that thing flying around
was hoping the table will fly like a UFO
Would be interesting to get a gauge on the next run, see what the thrust output is too.
(Yeah I'm greedy but this guy's smart enough to add that without breaking sweat).
State the obvious *Brilliant vid*
⁴
dude i was thinking the same thing!!
As a helicopter pilot there's no sound more pleasing than the startup of a jet turbine. Having watched your video I can now truly grok what is happening in the engine in pre-start, initial ignition, complete ignition, and the spooling up as the cycle completes. Wow, just plain wow!! Thank you!!
As someone has already said, you're a very talented machinist/engineer. As an A&P has said this is accurate and useful. And now you have it from someone who power up, injects air to start the cycle, introduces fuel to start the ignition, and enjoys the resulting power out the other side!!
Also seeing the power come from the fuel and not massive amounts of air is a double-take worth its weight in gold. :)
Is it true that helicopter engines are always running at or close to 100% power and just changing prop pitch to go up and down? I had always thought that "give it more power" was exactly that, more rpm, but someone told me that collective is just pitch.
@@roushstge2 This someone was right, it is only pitch to change the lift. If you change the rpm of the engine it affects the behaviour of the helicopter during the flight. This is what you don't want. Stable rpm means stable flight. I'm flying rc-helicopters, at least here it is this way, I guess in real helicopters it will be similar.
I’ve been designing jet engines professionally for 32 years. Never seen inside one when it’s running. AWESOME!!
❤️ as a fellow engineer, that's amazing to hear... Thanks!
If you ve never seen how it works inside how did you even design them ?
@@genekisayan6564 🤓 Your question is basically the definition of engineering. Design, analyze, build, test, repeat.
@@genekisayan6564 Scientists create theories, engineers bring them to life. You need to use your imagination! Mechanical engineering is more art than science, yet still needs to follow strict rules of logic. Otto created internal combustion engine without seeing through its walls, and so did Diesel with his engine.
@@lukem3250 pretty reductionist, mechanical engineering is 100% science. We've been building internal combustion engines for over 150 years.
I'm a 20 year Airline Captain.... every training class I've ever attended in my career falls well short of what this video teaches. to view the actually work inside is mind blowing. thank you for dedicating your time and resources to reach other. God Bless...
He can probably sell this as a training video $$$
To be fair, this isn't half as complicated as a commercial turbo jet engine and is at best able to show the most basic concept of function of this equivalent.
But i agree that it's quite interesing to see the workings in this little thing.
You should probably find some better training classes then, because no matter how cool this is (which it is) it doesn’t really tell you much at all about the working of a jet engine.
@@cattnipp you really want to be the butt
As a recently retired engineer in the aerospace industry, I fully agree. To see the thermal performance of the combustion chamber was astonishing.
I'm a recently retired middle-school Science teacher. I've "known" how jet engines work for years...as much as one can "know " something from looking at drawings and photos. To be able to see the inside while it is in operation was just incredible. Thanks for making and sharing this vid. I wish I'd have had it while I was still teaching.
The issue is are you now ready to judge the Toshiba illustration video of using superconductor electric motor to spin turbine lol?
Jet's run on air not petroleum
You are still teaching, please have no doubt about. A good teacher gets better whole his "local" life and beyond. You do remember your own tutors. I bet you did not stop learning from them even for now, and they will continue teaching your students along with you. It's not "a man gets smarter" it's Socrates and Archimedes have been in the class all this time. "I am a clever man on my own" - what a greate phrase for a comedyan:-)
"I'm glad it didn't blow apart." I got a pretty good chuckle there. As I was watching the thing spool up to over 100k I was thinking "this guy's five feet away from something that could end it all in less than a blink of an eye if it all went to poo". I respect somebody who's got that kind of confidence in their own abilities and can demonstrate it for our benefit. Well done.
When I noticed he was several feet away from the engine, I thought it was a bit of overkill… until I realized this wasn’t a toy engine (unlike another video I watched yesterday showing assembly of a Japanese turbofan engine kit made from metal parts). It may be small, but if something went wrong, you definitely wouldn’t want to be standing right next to it.
120k RPM fan disks would be deadly at almost any size...this man has confidence in his work! Also, that adorably-tiny jet engine was amazing to see inside like that!
I flew jet airliners for over 12,000 hours since 1984 and of course never got to see a burner can in operation. Very nice craftsmanship building it. Thank you for a very informative video!
Thanks! I'm hoping to show more.
@@WarpedYT liquid nitrogen is worth using as the 'combustible' as it does not cost much and myths about it not be energy rich enough persist.. but instead of fire generating heat you have to drastically disperse perhaps with room temp thermal superconducting materials or some sort fo nano structural vapor skin...
when air is sucked in at great volumes it does get hot but can it provide enough heat to boil the nitrogen comparable to the work of compressing the air? I know it can be done because the extreme pressures the phase change generates make burning fuels incomparable. The challenge however is not overcooling air as I noted in other comment. It will condense water of course and that water is a good eject if sent out fast enough but creates inelasticity of course even expanding if toomuch mass is shed (any crystals formed transferring mass to heat of course right?)
Or can you by agitating the water vapor sufficiently maintain it's mass despite it being cyrogenically cool? I doubt that!!! If you managed to do that the exhaust gasses would be icy literally and provide a ground effect maximising sought turbulence at backside of jet snow forming and those crystals being like parachutes to push off of a real brain riddle right!
they would constrain atmosphere for sure! Exhaust gas crystals only happen when you boil not burn your 'fuel'
a fuel our atmospher is mainly just preboiled like lithium batteries right?
capable of being reboilable
not just good enough for lettuce bags to turbo profits by displacing oxygen
oxygen is not needed for jet engenies nor is water vapor a threat
nothing boils nitorgen better then warm rain
snow of course in freezing air would need a filter that prvents it from getting into nitrogen boiler parts of turbine however snow compressed does melt forming eject that again snows
all this molten not just nitrogen around us but practically plasma already and we care about our bodies when judging it's value
it's energy
so hot!!!
so capable of releasing potential energy of snapped nitrogen molecules by increasing there mass!!!
Boiled nitrogen is heavy and superheated by sun it has plenty of bonus heat to increase i wonder what the ratio of nitrogen snapped at 40 degrees or say 5 degrees celsius free nitrogen is... how many grams of liquid can be melted by how many grams of free to mine air???
i feel so ignorant not knowing precisely and lacking the equations on my watch
ocean surface howvering hypersonics have hot humidity always to work with
so far less volume versus dry air is needed to boil and spin the turbine
if spinning is even right the densnapping process we must have open minds for
again the free molecule is heavier not lighter
ice is lighter then liquid water not just by volume
but atom duh
it is nuclear energy that is released when atmoshpher nitrogen vapors shed heat into liquid nitrogen this nano process of seperativing the N's far enough do all the work we need done if only, if only the immense power of those forces can be harnessed.
When heat turns into mass WATCH OUT
this other side of nuclear is our greatest nastilly kept secret
steampower was replaced by octane nonsense talk
always corrupting is the song of jet fuel
burning petroleum is to sell it duh
with almost none of us owning any
no a planet rich with heavy nitrogen for free omfg?
or you got no courage?
are afraid of texas or going kashogi?
live man! FIGHT
@@arts8302 most mentaly stable channel viewer
oh yeah, I'm sure some random guy in youtube comments, that uploads videos of BIRDS, knows ALL about jet engines LOL@@arts8302
Great job! I worked as an engineer at Pratt & Whitney for 24 years and found this video very interesting.
Thank you... I love Pratt and Whitney
@@WarpedYT Everybody loves P&W. "In Thrust We Trust". ( Except maybe GE! ) LoL!
question
when the jet engine starts what keeps the blades spinning?
is it spinning because of the vaccum of air coming in caused by air being pushed out of the back?
i understand how the electric starter compresses air enough for the fuel air ratio to be right but my imagination is limited to my knowledge of car engines
@@lllilililililililililllthe turbine and compressor wheels are joined via a common shaft. if one spins then then the other will spin too.
Fun fact: I interviewed with P&W in Mass for a ceramic coating robotic programming job a few years ago. I aced the interview but turned the job down as it didn't pay enough and finding a place to live in that area was difficult.
Retired from Pratt and Whitney as a mechanic building the F100 after 23 years only to relocate and now do the same for GE's F110 and wanted to say thanks for the video! I've seen these engines at test cell but it's so cool to see one like this with a clear cover to actually see it in action. VERY IMPRESSIVE.
👍
Also working at GE here designing turboshaft. Very cool video
Man really just said "So i built a jet engine in my backyard"
An unfathomable amount of respect good sir, very interesting and well explained video to, all the questions i had you answered throughout the vid!
Thanks, I tried to cover everything.
5:49 That flexing demonstrated the internal pressures better than anything I've ever seen and thats after 20 years as an aviation professional with a masters in aviation and space sciences. Very well done!!
That movement doe.... Omg
Just curious; you say you’re an aviation professional with a masters in aviation and space sciences.. what does that mean? Are you a mechanical engineer? Aerospace engineer? What was your title
"masters"..LoL.
@@Macattack7 Hey Tony, Thanks for the question. My degree is non-technical which means I can't claim to be a scientist or engineer sadly. But during my undergrad work I still had to design a mathematical model of a jet engine, I used excel. Matlab wasn't a thing back then. Also had to get real familiar with things like GPS and GloNASS, aerodynamics, orbital equations etc. I am a pilot with with 2 certifications, private and unmanned. My grad degree was less technical. The first half of it focusing on airline operations, second half focusing on space exploration. As my thesis I researched and wrote a paper on ethical governance of space based resources and off planet colonies. Really it was just an excuse to research how a Mars colony would be governed. Work wise, its all been aviation. Started my career at a flight school, moved on to a high altitude research center where I conducted cabin pressure research for boeing to see if lowering the cabin altitude made for better pilots. A short stint in operations or KTUL, then on to aviation operations for a part 135 operator. Currently i teach drone law. Built and flown two aircraft, one of which was experimental (the better of the two I might add, lol). Been around jet engines my whole career, even got to fly a B-17 (not jet obviously) for a summer during airshow season, and at one stop flew it with Buzz Aldrin!!! A lot more experiences in the last 20+ years but those are the highlights. Sorry for the long reply, but thats what it means. Still mostly interested in space though. Its just really hard to get into unless you have the engineering title.
@@r0ky_M Master's....Better?
As a design engineer that mainly work on military propulsions working for GE, gotta say this is one of the coolest videos I've ever seen and I get to see the real thing in person. Now I want to build one in my basement
I hope you can succeed
ay i wanna become a design engineer, how is it?
5:14...When you do, please strap it down with more than four screws before firing it up!
The fact you say the word “coolest” is an odd choice of word for a propulsion engineer. As someone in my 50s with many years experience in technology, petroleum and the like, I would certainly not use such a young persons trendy word.
@@oddities-whatnot ur weird dude
You showed even the engineering and behind the scene stuff which is generally skipped, that is crazy, huge respect!
As an aviation expert, NASA engineer, who has worked 200 years on the top secret SR-78 Aurora from the future and returned back in time just to write this comment, I must say that this is quite impressive to see in action.
Hahahahaha lmao
If thats true, run! Now NSA is hunting your ass
The parts about the "200 years" and the "SR-78" seem legit. I can't prove those facts wrong.
However, there is no such thing as a Nasa engineer. It's NASA (regardless of what you might have read in some goofy British writer's style guide).
@@DemPilafian Good one, just corrected that. It must have been the time portal fluctuation causing the typo.
lol
I have been an A&P mechanic for over twenty years....Best representation of what happens in a jet engine I have seen to date. I really enjoyed the slow motion segment showing how the engine expands and contracts along the rotational axis. Bonus points for a new video showing how the entire engine responds to torque.
100%!! My buddy works at Pratt, and I would laugh when he talked about the 4 main departments in the factory. Suck, Squeeze, Bang, and Blow. With the visual of the video, it's so clear now. Just like that see-through engine! LOL
5:49 this is why I'm always amazed at how jet engines are constructed and mounted. The immense pressure they create on themselves while being bolted to, and pushing, a 160 metric ton thing from standstill on the ground to airborne.
Not only just pushing it but also pushing it past the speed of sound!
That's the power of Dinosaur remains
That hit almost 130k RPM. That's incredible, and I'm surprised it stayed together through the testing.
it blows my mind everytime im reminded of how fast turbines spin, even in regular cars, their turbos can spin anywhere from 100 to 140k rpm
@@magnusthoegersen8974 what in the goddamn fuckin hell. For reference anyone that doesn't know, a regular gasoline car engine runs at around 2,500 RPM even at highway speeds. At 7,000 RPM and up, you're risking engine damage
@@magnusthoegersen8974 The newer smaller engines go over 200,000 RPM !
he's talking about the turbo you dummy lmao@@Joe_P
@@Joe_P hes talking about the turbo speed not the engine speed sherlock
I am a retired combustion engineer and have worked on all sorts of burners from 1 to over 800mmbtu/hr and your video is the most awesome I have ever seen. I am looking forward to seeing more of your videos!
A fascinating science. Not many of us can do calculus.
Agreed!!!!
@@grandcrappy calculus, I can barely remember algebra. But yes it's fascinating alright.
Thanks so much for this. My father designed jet turbines for General Electric from 1952 to 1990. He started when jet engines were primitive, prior to the high bypass turbofan, and retired at point when the technology had matured. In 1952 it was not uncommon for jet engines to--how do I put this delicately--explode. He has dozens of patents in his name, and is one of the relative few to be inducted into the GE Aviation Hall of Fame. One of his major projects was the TF-34, which powered military and civilian aircraft, but is probably best known as the powerplant for the A-10 Warthog. He is still with us, and I am going to show him your model. He'll get a kick out of it!
Wow dude, one the coolest aircraft of all time 😁😁
Please update us on his reaction to this.
Great story! He will probably never know his full contribution to this world, but obviously it was quite significant.
A-10 Warthog one of my favorite planes! ✈
Born and raised in Tucson, AZ many days and nights hearing seeing the majestic A-10 Warthog flying over the city to Davis Monthan. I love the flying tank. Thanks to your father and many more for such a fantastic piece of Aviation.
It's a wonder you never ventured into his career field
I'm impressed that the bypass air was enough to keep the case from burning. It was also neat to see the jet fuel burning with a blue flame through the openings at the higher power settings. It just goes to show how intense the combustion is.
@swagfish1996: not all of the air in a turbojet engine goes directly into the combustion chamber, some of it bypasses the primary stage and is introduced downstream to cool the engine and provide additional air for complete combustion. I think that's what the commenter above you was noticing. With that said, it's definitely not bypass air in the same sense as a turbofan engine, because it's all still going into a later part of the combustion chamber. But I suppose it could be seen as bypass air from a certain point of view.
One thing I will say is that supersonic turbojets have bypass ducts because that's where the excess airflow from the intake goes at supersonic speeds... but none of that flow enters the engine core.
@@ErickCTo clarify; In a turbojet, air that bypasses the combustion chamber rejoins that flow before the turbine. This serves to moderate the temperature of the gas hitting the turbine so the turbine doesn’t overheat and fail. This is called “internal bypass”. Turbofans do this as well, but the difference with a turbofan is that they also have EXTERNAL bypass air. Most of the air coming off the fan bypasses the engine core completely and is only used for thrust.
Thank you all for the clarification on internal vs. external air. I didn't know the difference other than the air missed the combustion chamber.
Did you notice the combustion on idle, then as you increase power the red ring slides to the rear of the can. Combustion further and further down the combuster , it's getting close to the turbine blade. Can you lengthen the combustion can and control the location of the combustion.?
@enriqueamaya3883😇
Brilliant engineering and design work. I am a retired aerospace/electronic engineer mainly working with communications satellites at TRW, and can appreciate the demonstrated professionalism involved. Too bad I don't have YOUR tools for design work! CAD/CAM wasn't even thought of when I was in college. It was all done by pencil and pen on drafting tables. Kudos to you!
Pretty cool being that I was a jet engine mechanic in the Air Force but also worked in the balance lab as a civil service mechanic where I balanced J85-21 turbines and compressor rotors for the F-5 that the navy used for the top gun program back in the late 90’s out at Edwards AFB. Great video.
Yeah guys, the real Top Gun. Bet you didn’t even realise its real
Im currently in school for aviation maintenance and had no idea how jet engines worked. the demonstration here is top-notch. for something made out of parts so simple to perform a single task it is absolutly breathtaking thank you for this video
Thanks...yes I agree
Well full size engines have more than one burner so its no exactly like this.
and Huge ass fan in front to pull in all that air and additional compressor and turbine.
@@richardhardy8337 that's a turbofan. Turbojets and turbofans are 2 different, albeit similar, engines.
This really helps contextualize the varied sounds coming from jets on takeoff.
Great video.
From 4:20 to 4:40, I was totally squinting and turning my head slightly, worrying it was gona explode. LOL. The pitch just kept getting higher!
@rickyanthony The engine isn't what you hear, it's the thrusters. And I said this video helps contextualize the various, separate sounds within the overall sound produced by the jet.
Chief fantastic video. No clickbait, informative, interesting, straight into it. This is exactly what YT content should be. Well done.
I have been a pilot for 20 years, 16 of those flying jets. This is hands down the best visual aid I have ever seen!
Cool!
dude this is not even close to a real jet engine, Im a RR mechanic, lol.
@@maxun1 You’re an idiot.
Plus you are a bus driver, you have no idea why the aircraft do what it does you push bottom like the monkey in a space program. Lol
@@maxun1 At least I can spell.
I can't imagine how much money this guys skills must be worth on the open market. I can't see there being many people out there with the skills to manufacture a jet engine from scratch. Really impressive.
Him doing with it just what he want is the highest pay grade tough
I ain't bragging but I just built a Flux capacitor.. so.... yeah...
Seriously though. I'm floored by the skill and precision. Wow.
the general principle of a jet engine is simplier than that of a combustion engine
@@funkydown Build one then.
@@theclockworkcadaver7025 hes saying its simpler, which (as a jet mechanic) it is. He didnt say he could build one
I love the micro balancing machine! Definitely no short cuts there. Would be worth a deep dive for the community on the effects of an unbalanced blisk at very high rpm. Good one!! I 👍
we all know what would happen. but i want to see it happen. lol
No it wouldn't. The vibration just kills the bearings, you don't need a deep dive to know the effects. What are you going to see on video? A tiny bit of radial movement?
We used to balance TF~39 C5A engines. There was quite a bit of math to determine weight size and placement.
Yes I will do that
oh yeah, much more dynamics on those with so many blades and large size. need to do math for certain.
This is one of the most immensely neat things I've ever seen. As a machinist, I'm as fascinated with the designing and building of that fixture and case as I am with the jet itself.
My dirty minded ass read "masochist" instead of machinist for 10 seconds XD
@@supermariogundam4 From my experience in a small time machine shop, they can be one and the same! haha.
Amazing. My grandson is an aspiring pilot and is obsessed with jet engines. I can't find any working model anywhere other than "toy" models. This is really a stellar build.
I love how one of the biggest technological advancements of the 20th century is now just a thing that people can build in their garage.
Ha! I think not.... This is no ordinary guy and that definitely isn't your ordinary garage... He's more than likely an engineer for NASA, or Boeing, or something of that magnitude....
u saying it too casualy like some random guy can do jet engine in his garage at sunny day lol. Obviously dude is not normal guy like us and his garage is not a garage for parking his car lmao.
@@joeyditcharo419 I would like to introduce you to integza who literally 3d prints jet engines, if you have the right 3d printer then you can download his plans and print one yourself. I believe they require other components but a normal person could easily make one themselves with machines and parts that a normal person could easily get.
@@joeyditcharo419 You don't need to be an engineer at NASA or Boeing in that matter. You wouldn't build an entire engine there anyway but a specific dedicated part or something.
Let’s hope they don’t start building nuclear weapon systems
Wow- twice I thought "okay, he's at the rev limit now" and then saw the LED display- 6% of throttle!!! Am definitely impressed. Thanks for the vid!
Well done! Not only did you show off a beautiful sounding and functioning engine, but you also designed the parts, programmed the Gcode for the CNC, CMM the finished pieces, kept the rings round and flat within tolerance after machining and assembled everything to complete a little jet engine. After all said and done it works! Very good stuff 👏 👍
Very well done. I love those experiments. One can see the temperature distribution of the combustion chamber at several stages of the run up. Thank you !! One remark from me: dependend on the smoke or fog system you use the compressor heats up the visible parts of the fog so that the vaporize or in case of dry ice sublimate. So the flow after the compressor is hardly to be seen.
I worked on repairing the turbofans and many other parts for jet engines from 1991-1995 but never had the opportunity to see how they work and operate internally like this. I wish I had the skills, tools and ability to make something like this. I would have a LOT of fun with this!
Blessings and thanks for the awesome video!
What an amazing accomplishment! I've been an automotive technician for 30 years and never dove into understanding jet engines because I couldn't see what was going on inside of them. Thanks for such an amazing video!
"Wheeww THAT'S HOT!" was a Eureka moment wasn't it?! When I flew in the Navy we didn't shut down our turbo shaft engines immediately but let them operate at ground idle for a short while for a brief cool down. This prevented the turbine blades from acquiring negative characteristics from a quick cooling off. Consider doing this on your small engine.
Yep you are absolutely correct, the only reason I shut it down to briefly like that was to finish off the scene, normally I let them cool down first for the exact reason you said. Thanks!
When I had a twin turbo Z years ago I would let it idle for a few minutes after a hard run to keep the oil from cooking inside the turbos.
This video makes UA-cam cruising a top notch educational experience. Thanks!!
As a long time mechanic working on four stroke engines I've always had a fascination with military jets and therefore jet engines. It's really cool to see what goes on inside one. I thought that there would more heat and flames going on outside and surrounding the combustion can because I always thought the compressed air went in the front of the can but now I see that the air from the compressor surrounds the the can and that mass of high pressure air surrounding the can forces the air into the combustion chamber from the outside through those holes in the can and also acts to contain the combustion to the interior of the can. Sometimes a visual approach to something conveys wat more then an text explanation or an animation. Great video.
That air entering into the can from the outside is known as dilution air and its function is to keep the can from melting. It keeps a layer of air flowing between the flame and the can housing otherwise it would straight away melt within minutes. It blew my mind when i read this. Just the sheer simplicity of this solution.
Been working with jet engines as a mechanic for 31 years and didnt think id see a see-through version. This is awesome!
As a Jet engine mech on F111, F15E, F16, and U2R/S acft that was amazing. The mechanics who have worked teardown and buildup know what happens but in 20 plus years I never got to actually see the flame in a combustor... AB yes... core engine never. I was amazed by the raw numbers... over 90K RPM and over 1000 degrees EGT/TIT... so freaking cool
I knew the fog would atomize in the engine and we wouldn't see it, it's the same with jet engines in clouds or rain. However I'd never have guessed that the plexiglass or glass see-through casing would not melt. I thought this would be on of those "fail" videos where the thing comes flying apart when the plexiglass melts. Great job on this.
I thought about that myself. It probably wouldn’t last in “real” usage, but it seems sturdy enough for a couple or so demonstration runs.
That is just awesome. Someone like you can build a jet engine in a garage and show it. Thank you for doing that. I finally get to see the inside workings of a jet engine. Just amazing!
@Julian -- No. You're absolutely fucking wrong
Outstanding. I'm ex-RAF aircraft engineer so personally very at home with the technology here but... what a way to demonstrate a jet to the general public!! Excellent!
This is way out of my league, and that's why it's so fascinating! I didn't even think that someone could build all of this at home...! You blew my mind.
Fantastic...held my breath as you cranked it right up...thanks so much for helping millions of us realize how much we wanted to SEE INSIDE A JET ENGINE at 130,000 rpm.
Thank you so much! I was having the hardest difficulties with my physics class, and I didn't understand gas turbines at all. Upon finding out that gas turbines are also jet engines, I watched this video. This gave me a full conceptual understanding of my class, especially at the beginning when you explained the four-stroke cycle in one cylinder. I highly appreciate it, thank you so much I was flunking out of my class but this got me an A!
Damn that was awesome! So cool to see!
Thanks!!!
holy crap
Collab when?
@@m8RAHN hopefully soon been busy building this Tesla.... A couple days away from completion though.
Just like my engines in Kerbal. Jebediah was looking anxious.
I've always wondered how a jet engine looks like when it's running and thought of someone to do a transparent one for demonstration. This video is the answer. Thanks, man. God bless!
so impressed to see all those stuff about jet engine. When i was a small kid, ive developed a passion for jet engine and rocket engine.
Very cool and fun to watch! My two cents: the thermal expansion of the aluminum frame (the longitudinal pieces on top and on the bottom) is much higher than the glass case. So, as it heated it wanted to grown longer, and the glass did not nearly as much. That's why I think it separated somewhat pulling one of the gaskets with it. Probably some of the other 2500+ comments said the same. My fear was the glass shattering! Now, even if it did not this time, with multiple cycles on it, it still may so please continue to take all safety precautions with this engine.
Ohhh definitely, if that glass would one day break...while the jet turbine full in action.... as you said in video the combustion pressure will accelerate the broken glass pieces like shrapnels.....I imagine a horrible deadly accident.
Lab style protection glasses won't be sufficiently in such case.
Glass pieces are flying bullets then.
UUUUU.....what a FKing horror would it be in such moment to stay 3 meters away with nothing in between.
A TRANSPARENT PROTECTION PANEL LIKE THOSE USED IN LABS TO PROTECT SPECTATORS WHILE DOING CHEMICAL EXPERIMENTS..... LIFE SAVING.
Might be the nxt video to make that glass BREAKING WHILE STAYING REMOTELY IN THE SAFE BUNKER.
PS: DEADLY ACCIDENT HAPPENED WITH FLYING GLASS SHRAPNELS WHEN SOMEONE PUT ONE OF THESE LAVA WAX LAMPS IN A MICROWAVE.
@@ronscrypt2go499 I imagine a few hundred numb nuts who didn't read these comments are probably out there building/testing these engines while wearing only safety goggles for protection😳
There's no way that's any kind of glass. Unless it's laminate borosilicate. Glass likes to explode into lethal debris. With something like this, you want your failure mode to be phase transition, not rapid lattice decomposition.
@@scottrackley4457 True! His material seems to be a plexiglas or Lexan cylinder. These materials won't shatter, but with enough heat will weaken and reshape. Pretty amazing little demo !!!!
@@McGrumpus Yup. With all that expensive video equipment I'm sure he doesn't want that cylinder to have a SMEF
I've been a jet engine myself for over 31 years and never seen inside the combustion area once. Great work!
W h a t
Say what?
How did you become a jet engine? Was it a surgery or were you born like that?
@@XenonSCRB Well he creates a lot of hot air but you can thrust him as long as ther is enough fool.
How did it feel to be a jet engine?🤣🤣🤣
Seeing inside ANY kind of engine while it runs is a dream come true!
BRO!!! you just helped me understand why the TURBO FAN is so effective ... it has all that power to spin the shaft which they harnessed to actually move a huge volume of air.
That is absolutely insane! I just love how the hot-spots move towards the exhaust side as it ramps up.
Thanks for this amazing and unique content
That was one of the two interesting things that I noticed. It makes sense because the intake end of the combustion chamber is cooled by the incoming air, so temperature increases in the flow direction as combustion adds heat.
The other interesting thing was the thermal expansion which the builder noted in the video.
Back in the day...I was a Voodoo (RF-101) flight line mechanic working on the J57-13. The sound of your engine definitely brought back memories. Great work!
I was waiting for the see-through hot section case to melt too. I saw the seal on the rear coming out. Cool project. It must be nice to have the laser cutter and the balancing machine. I built jet engines for 42 years. The impeller compressor is old school. I used to build them on the J-69 engine.
If my knowledge serves me correctly. The type of engine is a centrifugal engine. I struggle trying to remeber the type that are common on todays engines. I just remeber turbo jet or turbo, shaft and or fan engines. I know that there were two types produced. The Meshersmit 262 had a jet engine similar to this model jet engine. If my memory serves me correctly that is. Most general aviation helicopter engines like the bell jet rangers have the same compressor design.
@@christophermcmichael880 Most commercial jet engines these days are turbofans.
@@-_James_- That I had already knew. The engine that is in the video is a centrifugal compressor engine where it diverts the air towards the outside then into the combustion liner. The most common type today is where the air is goes through the different stages from low compression to high compression then into the combustion chamber and liner. I just don't remember what the technical name for that type of engine is?
@@christophermcmichael880 Turbojet? Just the turbofan without the bypass.
@@IJsbeer74 Thank you Agent JayZ.. the other most common type of turbo jet engine compressor is called an Axial flow compressor which has the different stages from low compression to to high compression befoe entering the combustion case and liner. The RC model engine in the video os called a centrifuge flow compessor which only has the single stage. Both are turbo jet engines. The centrifugal compressor is an older design. That engine, the full size version was a German design and was used in the Meshersmit 262. Now the common turbo jet, turbo fan engine as well as some turbo shaft engines are Axisl flow engines.
Where ever this guy lives I wanna move there and become his apprentice. Dude is legit.
This is such great production, and the craftsmanship is unbelievable, I just had to stop and say that man; this is honestly stunning.
I'm hoping to see him do an axial-compression turbine version over the next year.
Yeah, but that one screw up front turned on my anxieties. Wish he'd given it another turn or so...
I'm an aerospace engineering student about to go into 3rd year and this video has put a huge smile on my face. I have a huge fascination in aerospace propulsion, specifically turbojets and rocket engines so yeah... awesome stuff!
Just turbojets and rockets? Not ramjets and scramjets?
ramjet, scramjet != turbojet
I'm in my third year (aerospace engineering) and feel the same. I've been obsessed with propulsion too. Glad there are lots of people like us out there trying to push the world forward.
@@sciencecompliance235 ramjets are really cool, love the idea of using shockwaves to compress air with no moving parts.
@@blainrinehart8865 Amazing! 😁
This was an absolutely awesome video. This is terrific for pilots to understand their jet engines better. I fly a jet and this was helpful. Thank you so much!
Thank you ! I will bring some more in detail videos soon .
currently in school learning how to repair aircraft!! this just made learning how jet engines work a lot more easier and interesting!!
As a science teacher, gearhead and friend of a couple engineers, I understood the basics. But this was so informative and interesting. I’m also amazed that one can basically build your own jet engine! Thanks
This was a REALLY impressive demo, and showing the step by step manufacturing process in your shop really made it 100% more interesting. You are a very talented engineer and machinist! Thanks for sharing this awesome video! 😊
@enriqueamaya3883 Does he know how to make jet engines?
Yo Matt! Yet another great showcase of both the complexity and simplicity of a jet engine. Thank you for always looking for creative ways to teach amazing mechanical things my man!
Thanks and your welcome, this one was 4 years in the making for various complex reasons but mostly because it took me a very long time to develop the material to use for the cylinder.
I thank that was a quartz tube, isn't it?
@@WarpedYT 4 years to make a 10 minute video. thank you wp.
@@WarpedYT I have several of these same jet engines for RC jets and its great to see what goes on inside then. Thanks for the video.
@@gakich. he developed the material himself over the past 4 years, it's his "secret sauce".
People like this, engineers etc. are SO smart, amazing really.
I found this video very interesting.
When I was in the Marine Corps from '79-'83, I worked rebuilding the main jet engine for the Harrier for 3 years, then the Gas Turbine Starter/Auxilary Power Unit for a year. I enjoyed working on them very much.
The balancing of the fan and turbine was interesting. That was a good thing to show that, because I don't think some people understand how fast a jet engine fan and turbine roates.
Great concept and great video.
The power coming out of that little jet engine is unbelievable just unbelievable very cool man very cool God bless you buddy
96K RPM amazing
What was the power, or the thrust?
@@8546Ken I'd like to know as well.
Crazy to think that an airplane engine does that for more than 10 hours on a long flight. What a technology.
Not only that but does it with multiple compressor stages
Even more crazy is that industrial gas turbines do that 24/7 and can run for weeks or even months without maintenance.
@@adamk203 they are also full of sensors and all connected to the internet. So a slight variation is caught long before there is a risk of engine failure. That way they can with confidence run it 24/7
@@morten-punnerud_engelstad forget the durability, that in itself makes it even more crazier to be honest
@@morten-punnerud_engelstad Sure, except that industrial gas turbines ran in continuous duty before the internet existed.
ive been trying to visualize the inside of a jet for decades thank you sooo much! I can finally "see" it.
Extremely impressive skill level and engineering ability. I used to work with Rolls Royce engines and when he demonstrated the process of balancing the rotor it brought back a ton of good memories on the assembly floor. His equipment and knowledge of operation makes this video even more outstanding. A++
As an engineering PhD that had worked on special purpose machines, I must admit that this is one of the coolest works that i have seen. I will be looking forward to the next video that includes the start up mechanism. You have just gained a subscribe. Thanks for sharing 👏🏾
It's so cool to see professionals excited about this. You could know how something works, worked on them, used them for decades...and still blows their minds to see inside it as its operating. Great video!
I think it's safe to say that it's more amazing how you made this miniature emgine yourself than how RR makes a normal size one. Bravo to you sir, this rocks.
(and, I kept expecting that whole table to start to move forward)
You are brilliant, awesome job 👍👍
As a helicopter enthusiast, I've always loved the startup process of the jet turbines - there's nothing better than hearing the engine "catch" and take over from the starter. It "lifts" the power away from the starter, and then you release the starter to hear just turbine - such a beautiful sound. Now I can finally see that process in action from the inside!!! thanks for making and sharing!
My higher education thesis was to research and develop new high temp materials wrt to existing Ni alloys for impellers and other parts inside the combustion chamber to increase the jet engines' efficiency. Here I clearly saw how temperature increases as hot gas travels through toward the exhaust side, and it was a thrilling experience for me. Thanks a lot for sharing this experience.
You just said a bunch of stuff I do not understand but ok.
Also developing a material sounds difficult
The sound of a jet engine start and power up, is one of the coolest sounds in this planet !!
Having 3 radio control turbine jets myself, (not ducted fans), this was incredible to finally see inside. It's like magic. I was taught that these were hybrid engines going from radial or centrifugal flow in to axial flow out. Really enjoyed your video!!!
We had something similar in A&P school. The core was exposed and would turn using battery power. Nothing even close to this cool. I wish all A&P schools could have something like this to demonstrate turbine power. Great Job
There have been several comments about the amount of airflow. A manufacturer of similar engines (there are many almost identical engines available) gives specs for their equivalent size (the P130-RX from JetCat):
_Name:_ _Value_
Pressure ratio: 3
Mass flow (kg/s): 0,3
Consumption Full load (ml/min): 441 @ 130N
Consumption idle (ml/min): 100
Weight [g]: 1326
Dimensions of the diameter (mm): 99
Length (mm): 284
Exhaust gas temperature (°C): 490-720
Idle speed (1/min): 40000
Max rpm (1/min): 127000
Thrust at idle (N): 4
Thrust @ maxRpm (N): 130
Exhaust gas velocity (km/h): 1560
Exhaust gas power output (kW): 28,2
SFC @ maxRpm (kg/Nh): 0,185
441 ml of kerosene is 355 g, and 355 g/minute is 6 g/second. So that's 300 grams of air and only 6 grams of fuel flowing per second, a mass ratio of 50:1. To burn kerosene completely requires 15.6 times as much mass of air as of fuel, so the engine is moving about three times as much air as it needs to burn the fuel; that's excess air, and that's normal for a turbine engine. The thrust results from increasing the momentum of the air; the energy to do that comes from the heat of burning the fuel.
DO NOT READ MY CHANNEL NAME
A basic see thru model like this can help aircraft engineers understand what's REALLY going on inside a jet engine, big or small. I'm no engineer myself but I admire the stuff they do to keep the world running.
In the midst of so many depressing issues going on in the World, this video is captivating, interesting, and inspiring. Thank you for sharing your creativity, and awesome machine shop skills.
Ignore the news/media and Government, follow what you're interested in, and your life will be filled with so much more joy
Really interesting, crazy seeing the forces trying to push the engine apart.
One of the most impressive videos I have ever watched. Thank you for sharing as my understanding of jet turbines is much clearer now.
5:35 Does utterly brilliant job building a see-thru jet engine using state-of-the-art technology and years of experience, and then, eschewing the safe use of an infrared thermometer, gives us his best Nascent Ape-Man imitation from the opening of the film "2001: A Space Odyssey" by putting his hand directly on the thing to see if it's hot. Really spans the timeline there.
I never flew nor built any aircraft or turbine, but I am still impressed and learned quite something. Awesome videos!
Honestly one of the coolest, craziest video's I've ever seen on UA-cam. Absolutely insane. Imagine showing someone this video in 1940.
Jet engine technology was developed in the late 1930s and went live in ‘43-44
I thought for sure it melt down. But it survived and looked so cool. Thank you for sharing with us.
Ya, this dude is brilliant. Alot of hours to obtain the knowledge he's acquired.
Probably the coolest most shocking (but logical) part for me was seeing how ~rapid~ thermal change on the compressor. The higher the RPM, it “compressed” the cold air/hot expansion *line* in the center of the compressor. Wow.
Very very cool! I was thinking the acrylic tube would melt but I guess the amount of cool air being pushed through is just enough to keep the temp low enough to prevent melting it. And yeah the pressure is amazing how it expanded enough to allow the gasket to blow out. Maybe a couple more horizontal brackets to help keep it together.
@enriqueamaya3883 no one cares, this is a video about jet engines
@enriqueamaya3883follow any god and u will lose money and learn propaganda
Wow, amazing, not only the "toy" itself, but the builder! Who would have thought to build something like this, only intense curiosity and dedication, congrats👏
I am simply "WOWed" by this presentation. Pure genius on display here. Thank you.
This is super neat to see all these components working in small scale, much thanks! I work as in engineer in the aerospace field where I'm responsible for the production of a few jet APUs but we also build the Blackhawk heli engine as well as the M1 Abrams tank engines on site. Those guys are a bit larger scale and you should see the airlflow testing on those suckers.
Keep up the amazing content!!
"suckers" is indeed the right word. ;)
@@rianmonnahan Reminds me of a gal I once knew....
@@BonyFingers1969 you sussy donut 😏
I was a flight cadet in the mid-seventies and studied jet engines. This is amazing what you have shown so beautifully. Wish you had given some figure for the thrust. Great job!
it just feels like: I-always-wanted-to-see-a-jet-while-it's-running moment and this is easily already one of my top videos of 2022 so far. holy sh*t. thx!! - can't wait for the next video, with the see-through combustion chamber
Currently in my powerplant course and damn this is interesting to see. Gonna have to show my instructor since he's big on powerplant.
0:28 - The rotor's radius is 75.0 mm
8:01 - It reaches a peak of 127,000 RPM
Circumference of circle = 2πr = 471.239mm
Velocity of blades: 471.239 mm * 127000 rpm = 59,847,340 mm/m
The intake blades were spinning at 59.8 km per minute!!! That's 3,591 km (2,231.2 miles) per hour!!! From Los Angeles to Charleston, SC. In one hour.
To add to the insanity of the units, 3,591 km/h is almost Mach 3! The jet engine is an excellent example of the apex of engineering right after nuclear reactors
How fast is that.. 😳😳😳
Now I get why he was so decided to fix those balancing issues.
How much thrust?
@@TurboMountTV It's over 9000.