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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.
@John O - Magnetic containment shielding?
@Warped Perception Don't suppose you could experiment with nitromethane and or methanol injection in part 2?You know you want to.
I have work 33 years at Pratt and Whitney.
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?
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
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.
Kurt did that really from scratch and scrap, way well back in years with simple tools and wooden compressor. And this is a manufactured parts here. Mind that)
he is no ordinary guy, dont be surprised if he has an Iron Man Suit.
@Tearman it's still cool.
that's because now we're on the 21st, not 20th
@Tango Alpha I'm not even gonna ask what the context behind this is lmao
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.
@funky down Build one then.
the general principle of a jet engine is simplier than that of a combustion engine
I ain't bragging but I just built a Flux capacitor.. so.... yeah...Seriously though. I'm floored by the skill and precision. Wow.
Him doing with it just what he want is the highest pay grade tough
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!
Rich guys that is
What a time to be alive indeed!! I am very grateful to be alive at this time. Just attended the Kansas City airshow where a glider pilot was flying a glider that was equipped with such a small jet engine. That pilot did amazing aerobatic stunts with that glider, all the while pushing the glider to its aerodynamic limits. Impressive. I am working on my glider PPL and would love to have a glider with such a nice little jet engine -- makes one independent of tow planes...
And then proceed to touch the thing that was basically on fire a few moment ago
@Sole Finder your delirious bro
This is so beyond cool. I had a smile on my face the whole time. The skill involved in this is extremely impressive. How much thrust was this producing?
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
OK... as a turbine pilot I've gotta tell you: that was cool and some really kick ass serious engineering. Well done dude! Would've been curious how many newton's or even pounds of thrust that little whomper of a turbine produces!
5:14...Enough to start loosening the 4 mounting screws.
Amazing content!Was it with afterburner on or just the basic jet engine?What's the difference between turbojet and turbofan?
I’ve been designing jet engines professionally for 32 years. Never seen inside one when it’s running. AWESOME!!
My honorable sir, would you please tell me the engine that is fitted with the jet engine in the travel aircraft, is it. engine. An electrician that you will adore with a jet engine is it an engine. Electrician????? An engine that is not electric, any non-quality engine, for example, that runs on gasoline, for example, can you clarify from your honorable person, if you would be so kind ==== How fast is the electric motor in your engine model. This is how many revolutions to achieve the required speed for the jet engine to rotate at a high speed and to generate a very large force so that any aircraft can take off. Thank you
@Adrian insight about the ratio heat expanding the gas adds to propulsion versus potentionial turbine speed if driven by motor would help illustrators but combining liquid nitrogen with the turbine that uses superconductor motor and ambient heat drawn in from atmosphere requires entirely new design.... for the nitrogen to be heated above freezing point of water requires immense amounts of air being cooled NOT heated. But it is that cooled air ejected at high speed that the nitrogen boiling can 'push' with turbine being an accelerator only slightly and as minimally as possible warming the nitrogen gas.Such a plane would of course have to be huge and surface effect only suspended. But it could go very very fast emissionless and carry immense tonnage beyond the nitrogen- and that nitrogen has more energy then lithium batteries in this application although less then hydrogen but when hydrogen is burned in a turbine it is very unclear how much energy is loss versus using it to generate electricity chemically for torque.VERY VERY LITTLE DISCUSSED but the future of aviation rests on it being similar or the future is compromised as to proper planI know what I don't know and have identified that so somobody can end that.Altitude is not important for long distance 'flight'it's getting cargo out of water away from whales that mattersadn speeding it up with 'yanking' adding to system tremendously for maintaing speeds almost entirely...THe nitrogen turbine helps yank when passing other just above wave tops of ocean hypersonic craft via old school floating cables.... however suspended they be.jets are insane to depend on even more so then propellerswe use geothermal energy to snap nitrogen into lighter denser material then increease it's mass as we accelerate turning it back into vaporphasechange dependent turbines like water are better then co2 single phase because stationary powerplants castrate our efforts to clean up our planetliquid nitrogen is the new steam- yanked hypersonics the new locomotive
@Adamo Conscientia get rekt noob lmaoooo
We are definitely interested in seeing a Part II, and Part III, and a Part IV.This is a very interesting video.Thanks, Dennis & Team
A useful and competent explanation, so I tried it and it turned out that everything works fine. Special thanks to the author for such useful content.
Amazing! During start-up at 4:19 until 4:30 you can hear that low pitch "exhaust resonance" humming just like on a full size jet engine like a GE90 or Trent 900!
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!
Looks Fantastic, thumbs up.!!
Looks terrible, the engines they made for Top Gun are much cooler, thumbs sideways
@Larsson Looks Fantastic, thumbs up.!!
As an aircraft mechanic this was very enjoyable to watch, great explanation too!
You've gotten so very good at what you do and I am completely impressed and grateful that you let me have a peek into your jet powered world! Do you actually make every element of a jet engine? Aer you an aeronautic engineer or just an extreme hobbyist? It appears that you have invested a great deal of time, money, and effort into the design and creation of jet engines! Thanks again for posting this, it is very educational!
I have always loved jet engines! The details and definitive explanations make total sense. Im a gas engine guy, personally, but i learn a lot from your videos.
Fantastic!!! Thx dude…I finally understand jet engine 😃This mechanic principle has always been a bit of mystery for me.Your explanations and the visual of your extraordinary prototype manage to explain physic at its best! Great job! Cant wait to see your next experiment! 😆👍🏼
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...
@James Higgins He's a pilot, he's not going to fix one in mid air anyhow.
@Agape Philerostorge nothing to do with me. I here for the jet engine. Go tell Athiest @Beary to get with the program..
@N1KSF Better yet, study eastern archeology, the Kumran caves discovery of the Isaiah scrolls, the underwater chariot wrecks of Pharaoh's army, the blood of Jesus under a microscope, the Shroud of Turin, hundreds of fulfilled Bible prophecy, the 7 Feasts of the Lord and many more. But if you don't wanna spend in-depth study on those, then just search youtube for *The Case for Christ* by _Lee Strobel_
@Beary Go to church...
I'm a simple guy who has flown many hours on an airline, in a passenger seat. I often wondered how the engine worked for obvious reasons. Thank you for taking the time to craft the engine and sharing your knowledge.
Working in aviation maintenance and having a understanding of the tolerances, heat, and pressures involved I honestly was expecting a catastrophic failure. I just knew that there would either be excessive vibration that would lead to something fragmenting and shattering the transparent enclosure. Watching this video from beginning to end was AWESOME! I definitely hit the Subscribe button after watching this video.
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++
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!
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!
@Warped Perception 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 reboilablenot just good enough for lettuce bags to turbo profits by displacing oxygenoxygen is not needed for jet engenies nor is water vapor a threatnothing boils nitorgen better then warm rainsnow 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 snowsall this molten not just nitrogen around us but practically plasma already and we care about our bodies when judging it's valueit's energyso 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 watchocean surface howvering hypersonics have hot humidity always to work withso far less volume versus dry air is needed to boil and spin the turbineif spinning is even right the densnapping process we must have open minds foragain the free molecule is heavier not lighterice is lighter then liquid water not just by volumebut atom duhit 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 OUTthis other side of nuclear is our greatest nastilly kept secretsteampower was replaced by octane nonsense talkalways corrupting is the song of jet fuelburning petroleum is to sell it duhwith almost none of us owning anyno a planet rich with heavy nitrogen for free omfg?or you got no courage?are afraid of texas or going kashogi?live man! FIGHT
Thanks! I'm hoping to show more.
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
Love your craftsmanship! Would be cool if you could make a hovering platform with this to transport goods (say one box for a start?).
Great stuff. Very good to see a range of modern technology being used in the manufacture of a jet engine. Amazing to actually see inside the engine, it helped me understand the process much better.
this is so cool. it really helps understand the incredibly fine tolerances in aircraft jet engines. amazing engineering. thanks for explaining this.
3:10 The exhaust nozzle looks like a convergent nozzle but it is actually a divergent nozzle. Inside of it the area where exhaust gases exit the turbine blades is small and it gets larger as it exits the nozzle assembly made up of the exhaust cone and exhaust fairing. Some exhausts add to this effect with an internal Pen Nib Fairing Assy. which is wide at the front and tapers to nothing going aft. I think they do it that way to cool and quiet the exhaust gasses on airliners. If I'm not mistaken, on military fighters they design it to speed up the exhaust gases for obvious reasons.....speed.
we use them on fighters to regulate engine pressure to avert stalls
I thought the front "compressor" was actually adding velocity to the flow, and then the high velocity flow would flow through the divergent stators, which by consequence decreased velocity of the flow and increased static pressure. Cool engine.
I have always wondered how a jet turbine works. Thanks for the simple clear demonstration! Great work...
I've worked in aviation for 20 years, and am still trying to understand how a turbine engine works. This has helped me understand it a little bit more. Thank you! Very cool.
I have often wondered who the person was that came up with the idea to manufacture and build a turbine engine, and the same with Jet Engines!I am totally amazed at how these engines work, and are so powerful. IMO, I believe the measurements have to be within .0002 on everything that is turning.The most interesting part, these designs produced one of the most powerful jet engine, or maybe the number one most powerful jet engine design! I am speaking of the SR-71 Blackbird that came to life in the 1960s! Unbelievable! I can only imagine what we have now that no-one has seen!
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!
@Warped Perception Can you test jet engine with 100% hydrogen and oxygen sir, we want see if hydogen capable extending burning timing than regular fuel, hydrogen will become main candidate to power personal vtol powered 100% hydrogen + oxygen jet engine.
@Gaki Ch. ガキ he developed the material himself over the past 4 years, it's his "secret sauce".
@Warped Perception 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.
@Warped Perception 4 years to make a 10 minute video. thank you wp.
I thank that was a quartz tube, isn't it?
Excellent project, congratulations!!, it would be nice if you could design a moving rail to measure the thrust developed by the turbine in different instances.
Such a wicked cool demonstration, with I'm assuming an epoxy case to be able to withstand those high temps and one could see how much air the engine was pushing, because of the debris, being whipped around in your garage.
It would be awesome the possibility to see through the combustion chamber. Maybe you can change half of it for glass (that should not melt if you run it not too fast)! Ps: I guess that for giving away half of the combustion chamber you would need also change the air flux (blocking part of it os something?). Since the relation air flow vs. fuel flow maybe is nonlinear, some fine adjustments regarding this would be necessary. Hope it works fine 🤞
You've actually made a truly priceless illustration of the jet engine's dangers by pulvering some mist at it.It can be seen in slow motion that not only the air was pulled in from infront of the ingine, but from behind as well.This is a neat demonstration of the Bernoullis principle, which states that increase of a fluid/gas speed will also decrease the pressure in it, and wise versa. Therefore, things may not only be sucked into the inlet from sides, but into exhaust too, in which case they will be immediately burned and blown away at a drastical speed.Take care around your engines, and have a nice day.
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!!
I work at NASA and was in charge of the moon landings- not to mention I got my BS and my Masters at the Bass Pro Institute of Technology, and I'm calling this comment out as being one of the best on youtube. Very well done sir!!🙂
@Röky_M Only 3 more comments to go and I'll win my bet. I'm routing for ya little buddy!!
@Colin Hoff Ah, well I'm not sure where my old chamber disappeared to then. Regardless I know if I'm flying and start to giggle its time to descend! Well good luck on your studies and flight training, fly safe!
Wow! This was great! Yes, Lets see how the starter works. Probably impossible to use see through on such hot operating temp.Thank you!
the coloring on the exhaust shield and how it changed during the first run is pure beauty of physics 😍
Wow! I've always understood the concept of a jet turbine by watching many animations. I've never seen the workings in action on a real one. This is by far one of the coolest videos I've seen on IDclips in a while. Thanks for sharing.
I work on jet engines a lot and your video is going to be an amazing way to explain the system. Basically, jet engine theory is that the flame NEVER actually touches the combuster case. It is actually “floating” on a constant stream of air fro those inlet ducts and holes to control the flame and keep it centered to provide the optimal burn and air/fuel ratio. That’s why you see the flame get more and more focused and concentrated as it spools up.
Great job! I worked as an engineer at Pratt & Whitney for 24 years and found this video very interesting.
@Andrew Martino I'm a design engineer at GE 🤣 so no love for pratt
@TheCyberMantis damn that quote
@Mike Rodix The blade at the back is fixed to the same shaft that's attached to the blade at the front. When the exhaust is pushed out the back, it goes through that blade, which forces it to spin, and consequently forces the shaft it's attached to and front blade to spin as well - which sucks in more air, which mixes with more fuel and repeats the process.
Rolls Royce are better than Pratt and Whitney
I fly a turboprop airplane and I’m aware of how the engine works but this demonstration was over the top you are amazing thank you for sharing this great video and informing us on the details of what’s really going on.
love your videos man you are so smart and a great "teacher'' you make everything very fun and understandable like the 4 stroke comparison helped me a lot and its always cool to see the internals of a working machine never stop plssss
For me, seeing all the tools he was using was like a kid walking into a toy store. 😍
That was freaking sweet. I was thinking you should build your jet engine twisted like the air flow on the side inside. If I had a jet engine I'd be trying to redesign it until I could get the most power out of it. Love it good job bro
I was a C-130 power plant mechanic in the A.F. this was the most awesome demonstration of a jet engine I have ever seen! So darn cool, good job!
That was amazing!Thank you for taking the time to do all this work.
Really like how the metal plates above and below bend while increasing thrust
Amazing craftsmanship and video! Do you know how many pounds of thrust it was producing at max output and what was the fuel flow?
Wow, your video and explanation of how jet engines work is fascinating! Given the engine gets extremely hot, how does a plane builder prevent it from starting a fire? Thanks for posting this!
8:45 Perhaps true for a low bypass, or no-bypas engine like this one, but not the case for high bypass, where typically around 80% of the thrust just comes from the massive amount of air being moved by the fan, and bypass ratios of around 10:1
This is very cool! I wish you could make more of it see-through than just the bypass
I was interested in detail on what the fuel does for the engine. it look like a lot of electrical but I noticed the fuel and you mentioned combustion. I am curious on how much fuel is necessary and what combustion does entirely and what would happen without the fuel
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!
@Lamar Lamar I started to venture into his career field, but then life happened. I'm still only one semester away from a degree in Mechanical Engineering! The trajectory then veered (and wobbled). But down deep I'll always be a nerd who loves youtube sites like this.
@Michael O Without googling, I think the S-3 Viking was the original contract for the TF-34? Folks just love the A-10, so that's why I mentioned it. I think both are aesthetically beautiful aircraft. S-3 stubby, handsome, and pugnacious; A-10 in-your-face fugly. But in an appealing sort of way. Both? Awesome powerplant!
The TF-34 also powered the Navy's S-3 Viking. I enjoyed working on them.
It's a wonder you never ventured into his career field
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.
Thank You Very Much. Always wondered too. Grew up at an airport in the 50's, and live by large airport now with passenger jets coming & going all day. Still lookup while knowing how heavy the planes are & seeing those small, but noisy engines pushing them up, up, & away just like TWA.
Worked as a mechanic for a major airline back in the 90s and was always fascinated by jet propulsion. Try multiple stage compressors now! Nice vid.
5:14...Great little jet motor, and great video, with a couple caveats. One of the four screws you used to hold it down seemed to be coming loose. This reminds me of the time two years ago when I tested the motor of a trash picked vacuum I found in pieces to see if it worked. I was stupid enough to not mount the motor in the vacuum first, believing that I could hold it down. It got loose like a bucking bronco! Fortunately, the GFCI kicked in and tripped the circuit breaker. So the damage was minimized. But had your see thru jet motor gotten loose, it might have gone flying all around your shop like a balloon with all the air let out, possibly injuring you and starting a fire. What surprises me is that a mere FOUR screws was able to hold it down during your demo! Later in the video, you said you were surprised it did not blow up. WOWSERS! On the one hand, kudos to you for your precise engineering! On the other hand, you probably would have been hit with red hot shrapnel had it blown up. If it were me, I'd do that experiment in the middle of nowhere, with remotely controlled cameras set up to record it, while sitting in a foxhole plenty far away. And I'd be sure to yell "FIRE IN THE HOLE!" if anyone else is around. On the one foot, how could an engineer such as you overlook these precautions? On the other foot, am I missing something here?
really looking forward to part 2. want to know what's going inside the combustor and how it works. many thanks
I'm taking my comercial pilot's license test in a few weeks and this was actually very useful to me! Thank you so much!
This is very impressive and great engineering and quality explanations... Well done !!
You're like the engineering version Michio Kaku, and that's a huge compliment, you both make learning about physics and engineering fun and easy to understand for the average person
Great video, thanks! One question: from which material is the transparent housing made of? For acrylic it is pretty too hot in there, so is it glass? Thnx
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.
@Tsz Him Cheung From my experience in a small time machine shop, they can be one and the same! haha.
My dirty minded ass read "masochist" instead of machinist for 10 seconds XD
Awesome Experiment! I've always wondered about the inner workings of the Jet Engine, a good learning experience for anyone who loves Jet Engines and alike. thanks for the video.👍
Nice job!! Built two jet engine models my self so be be careful with this glass cowling. Use locktite on all screws cause of hi freq vibrations, tends to loose screws very often and easy. These axial movement that you had with engine could cause NGV to make contact with turbine wheel....which is bad at RPM higher than 100K. Usually there is a gap approx 0.8-1 mm between NGV and turbine blades because of thermal expansion of whole engine(shaft tunnel) so be careful with that. At 100k RPM and more, any issue can be a cluster fuck up :) ....God job!
Oh man! That was frickin awesome! Seeing inside a jet running has added such a great understanding of the process.
Thank you sir !!! That was super interesting. Glad IDclips offers people like you to share this stuff with the world!!! Thank you
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 .
That was hella awesome 👏🏽 and really loved the way you explained how it all works step by step comparing to a 4 stroke engine 🤙🏽🤙🏽
Just incredible, you sir are seriously clever.I loved this.
Really Cool idea. I agree on the idea for looking further inside. I've always wanted to see how the startup cycle progresses.
_Fantastic_ content - really good stuff! 🙂
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.
Wow! that's amazing. On another note - what is the waterjet brand of your machine? that looks pretty neat
I think that engine may be able to lift pooled water from right under it. It was one of the cooler things to see when I saw IAE engines spooled up on A320 aircraft. Cool video nonetheless!
Great work! exelent pice of art!to avoid blowing up of the gasket You can use long screws to pull the both flanges in place. also wider opening of the air inlet would lower the suction restrictions and the engine would blow up:) I really enjoy Your work!
It seems like there needs to be gearing between work harvesting blades and those that impart additional velocity to denser exhaust reducing it's pressure presumably once release if at fast enough speed for remaining distance....the engine provides thrust by making air around and outside engine move so the smoke test demonstated that to me mainly despite engine being stationary no spoke that gets past it's entrance can be suicked into it. If it was braking it could suck all the smoke more easally
Very impressive and cool. Well done work and demonstration; that's excellent professional work!
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 👍
oh yeah, much more dynamics on those with so many blades and large size. need to do math for certain.
Yes I will do that
We used to balance TF~39 C5A engines. There was quite a bit of math to determine weight size and placement.
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 all know what would happen. but i want to see it happen. lol
very very cool!!! so much to learn. I love engines but this exposure to jet powerplants has been the best for me. thanks so much
Amazing what you can make when you have a Bridgeport and other metal turning and cutting machines and an engineering knowledge!
⭐️⭐️⭐️⭐️⭐️ Amazing. I never thought i'd see inside a jet engine in full power inside someone's garage. Only in America 💪
To keep the gaskets healthy and prevent them from burning, you can use fireproof gaskets that are used in car cylinders
Crazy to think that an airplane engine does that for more than 10 hours on a long flight. What a technology.
@melonbobful I would say they definitely experience a whole lot less stress when in continuos operation, as they see almost no thermal cycling, and the hydrodynamic bearings rarely come to a stop, which greatly extends their lifespan, as they run on a film of oil when turning, making them last infinitely long and suffer no wear at all once running (except for a potential thrust washer, but that's not a part of the bearing itself), but during startup, there is no oil film, meaning they will have metal-to-metal contact until a film of oil has been established. When a gas turbine is running, the only wear it experiences is dust particles from the intake air hitting the compressor blades, but when it is stopping and starting, bearings run dry and thermal expansion causes metals to fracture. The same is true for the blower motors on many wall-mount condensing boilers, which are also meant to only start up a few times per month or even per year, and then keep modulating, possibly for weeks or even months on end, which means the bearings (that often are hydrodynamic) will also keep running on an oil/grease film minimizing wear. That is also how these boilers last 30+ years, while many similar fans in other applications fail after only a couple years. That is also the reason why these boilers will quickly fail if they are oversized, as they have to constantly shut off on overtemp due to their minimum modulating power being far greater than what is needed at the moment, and restart shortly after cooling down, which they simply weren't meant to do, causing many parts like the fan bearings, spark electrodes and gas valve to wear out quickly.
@Adam K Best reply.
Day after day, month after month, year after year! And operating reliably between -40 to +125 F. Amazing technology.
@Adam K they run for a year long, usually once a year stopped for inspection and go on
@Adam K Are gas turbine motors happier when they run continuously as opposed to a poor little turboprop plane doing 20 cycles a day?
As someone working in this field it’s impressive you created this in a miniature version. Very very nice. Thumbs up. I’m wondering how many it’d take to power a light weight airplane. Be careful with the rotating parts when in operation and I’m curious for the video when you do the bird test :)
I agree in this case, but the percentage of thrust produced by air volume ingestion is much greater in a high bypass turbofanOther then the electric ducted fans, has anyone made a high bypass mini gas turbine?
This is seriously cool! We take for granted this technology, that for generations people never knew how to make it work.This is what IDclips is for, I love science and learning
Great project, love these engines!! Thanks for the video.
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.
Pretty sure the expansion is not thermal, but almost completely caused by overpressure inside the engine. You can tell by how the engine instantly expands when fuel is burned (which increases the internal pressure).
@McGrumpus Yup. With all that expensive video equipment I'm sure he doesn't want that cylinder to have a SMEF
@Scott Rackley 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 !!!!
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.
@Ron's Crypt2go 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😳
That's very impressive! I wish I had your skills in this area.
I've watched a lot of videos on jet engines and some of the concepts stuck but most of it didn't. I think I learned more from this little video than all the other, sometimes comprehensive, videos I watched. Thank you very much.
Awesome Commentary and video. I'm and engineer and grew up flying R/C planes when a ducted fan was a "Jet". Simply amazing, kudos for breaking it down in simple terms that most people can understand.
I love these vids you do with the see through engine's in operation!😁, thanks bro!😜✌
This is such great production, and the craftsmanship is unbelievable, I just had to stop and say that man; this is honestly stunning.
Yeah, but that one screw up front turned on my anxieties. Wish he'd given it another turn or so...
I'm hoping to see him do an axial-compression turbine version over the next year.
This was way cool. I thought for sure this thing would blow apart. Excellent video!!!
Awesome video. Looking forward to see inside the combustion chamber. So what was the rpm, sounds really fast.
What amazes me is that the host makes it look so effortless to design and assemble a turbine of this type when it took scientists and engineers years to do the same thing during the early days of its development, and those models were highly inefficient.