We bought a new jet engine... can we boost it?!
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- Опубликовано: 26 сен 2024
- We purchased a swiwin 300B turbojet engine and test an unconventional method to increase it's thrust. If you try to do this at home, please do it safely.
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Not enough people confirm negative experimental results. Such a good way to improve your intuition.
Very true.
Fun fact: top comment confirms a negative experimental result, human condition has entered a intellectual mass extension.
Technically ... Général science rarely publish failures, but computing security ... Always do !!!
"Can we boost it?"
Indeed. Negative results are still very worthwhile. It's not a failure, you know what does not work.
3 measurements = statistically significant. I find it concerning that if we get a ‘good’ result we stop taking measurements. Only when we get ‘bad’ results do we measure again. Bias is a killer of the truth.
This guy is my favorite mad scientist.
😊
Mine too!
mad scientist he may be yet he is a very knowledgeable mad scientist across may fields.
not mine
Markle Sparkle? (Sorry, obscure reference. The mad science is fun.)
This is my tributary comment for the algorithmic gods. May your subs grow ever higher
lol, same
I wonder if the thumbs up is enough of a sacrifice to the algorithmic gods to appease them?
@@tomboyd7109 Depends on how it's removed, I suppose.
To one million and beyond
We exalt in the glory of the tributary comment \0/
Thank you for avoiding sponsors, may the algorithm be with you.
I did notice the fact that you do not advertise on this channel. In fact, that's one of the main reasons why I like and respect this channel so much.
It is an unavoidable truth that whenever a RUclips channel starts adverting products and/or services which the host will never use, there is a high probability that a gradual change will start to take place. The motivation to produce a video starts to be more and more driven by financial rewards rather than intellectual ones.
A line of thust is cut between the channel and its audience. Some of the audience will, to an extent, feel conned for having been lured into a long, seemingly useless, perhaps misleading advert.
Thank you ever so much for honestly caring about your viewers and their viewing experience.
Such posture will never go unnoticed.
You got a reduction in thrust because the volume of air entrained couldn't make up for the massive pressure drop the augmenter created. It expanded the the nozzle area rapidly reducing exhaust velocity. Lower exhaust velocity for relatively the same air mass flow means a reduction in thrust.
It works on the pulse jets because their exhausts are at a much higher velocity (supersonic) due to the fact they have a detonative combustion process compared to deflagrative for the jet engine, so the augmenter essentially becomes like a convergent-divergent nozzle for them, helping their exhaust expand for greater velocity.
Sort of, i think the case is really more to do with momentum coupling, the high velocity low massflow provides less impulse for the energy of a high massflow low velocity flow, and the really inefficient pulse het output gets a larger benefit by entraining a larger massflow in the augmenter than the better tuned turbojet
@@youngbloodbear9662 A good test would be to couple the augumenter directly to the pulse engines in a way that doesn't cause entrainment. Basically just welding it to the engine. If the thrust still increases then my theory is probably right.
I was wondering how much the exhaust velocity was going to affect it.
@@xBIGMUSCLEx that would be a fair test I agree
@@youngbloodbear9662 I patented a jet engine design that uses similar principles.
They are alive!
I was wondering the same thing! 😂
I bet it takes a lot of work and time to build everything
Great guys and smart with 1% of mad scientist :) Hope all to be safe and ok to see 10 mils subs here 👍
I don't know who I get more surprised is alive after each video, them or I did a thing. Both keep doing the craziest stuff.
@@joaomrtins Alan Pan is also a FULL LUNATIC.
Thank you for not having annoying sponsorships. Love your channel
I disagree. we can all put up with a 20 second sponsor. But NOT the youtube ads every 5 minutes (it's a engineering video but we get pushed ads about some game?). A quick sponsor read by these guys of a product they really might use works for me and every cent they can put towards the science I am all for it.
@@zeitgeist909 Firefox and voilà.
@@zeitgeist909 You don't get either sponsor or ads. You get ads or both ads and sponsor. RUclips wants it's cut and they only earn it by ads, not by sponsor. There are ways to stop the ads, you can search for it
Problem is: RUclips ads are getting more and more annoying. I got like 4 or 5 during this video. Even 45seconds one
@@E_Proxy The channel gets no say about the youtube ads. If you don't have premium you will get them, Tech ingredients has no say in the matter.
The fact that you published video with a disappointing result demonstrates your integrity. I'm looking forward to the pulse jet iteration!
"This is my tributary comment for the algorithmic gods. May your subs grow ever higher." Greetings from Brasil!😃
Propane guy here. You have 2 holes near the torch base. That uses same principles (i think it is some type of venturi) to mix air with jetted propane.
what??? youre made of propane?
@@penguiin12 no he is Pro Pane his hands install quality windows by day and inflict quality justice by night.
@@zachmoyer1849😂😂😂
@@penguiin12 he is, what's the problem?
Propane and propane accessories?
I am a tech geek! I love watching you put together projects that, as a kid, I could only dream about!
Thank you!
Impressive is a understatement. These guys need a raise. You guys rock. 😊
One should never underestimate the Reynold's number in such a setup with fast moving turbulent gas flow. However, there are good news. There is already a working and well proven augmenter for continuously operating jet engines, that improves power and fuel economy significantly: It is termed the turbo-fan concept. You need a turbo shaft engine with a large fan at the intake face, driven by a planetary gear box. Fan and engine are mounted coaxially within a tube. the main wirking principle is that of a gas-pump. Additionally, the hot exhaust gas stream provides more work - close to Carnot's efficiency with optmised engines. Consequently EGT of the whole system is much lower.
Yeah, but a modern high-bypass turbofan can't take you supersonic (yet). And that has to be the goal
@@ACCPhil When supersonic flight is the goal, I agree. However, if fuel economy and low emissions are required, turbo-fans are the best choice.
I would love to see a proper RC scale high-bypass axial flow turbofan! Centrifugal flow turbojet engines are the only ones I've ever seen.
You know whats great about this channel
You can like the video before it starts because you already know its gonna be great 👌
That’s what I do too, so I can’t forget it!!
And no way I change my mind about this.
You know, I didn’t realize this till now but this channel is a modern day Mr. Wizard for adults.
I totally loved that show as a kid 😊
in germany we had Löwenzahn
the guy who moderated it was an Engineer who often built Rube-Goldberg machines (little fun fact: he was the sound-technician responsible for transmitting Kennedy's speech in Berlin "Ich bin ein Berliner"
@@Ahtalonmöge Herr Lustig in frieden ruhen
@@friskydingo5370was that the original series in the 50s or the newer one in the 70 I believe? I loved the ones when I was a kid in the 50s.😊
I said exactly that the first time I saw one of his videos. It was rocket engines, if I remember correctly.
fancy suit, no tie, matching hat, arrive via chauffer .. go to the big boy gun show looking right
his hair changed color
You got my like. Just for not getting stupid sponsors!
If i could give 2, id do it as well because i love these informative video's! Keep up the good work 💪🏻
They have a patreon that I subscribed to I feel the same way
To the moon
@@friskydingo5370 lots of ppl sell out, raids shadow legends or other bs
Glad there are still honourable people as content creators
Aerospace engineer, but admittedly didn’t specialize in propulsion, still I did study it quite a bit. What I can say is that typically aerospace propulsion comes down to momentum coupling, you have a given power generation available in a reactive engine and you need to maximize the useful momentum transfer coming from that, that means balancing massflow and exit velocity. You can have a lot of air moving slow or a little air screaming fast with the same energy. Because of the V^2 vs V scaling of energy and momentum that means you get the most oomph from a larger mass moving slow, but if you’re moving at a certain velocity you have to give *some* impulse or you aren’t really doing anything. It tends to balance so that the exhaust velocity is most efficient at about 2x the forward speed. A turbojet has a really fast exhaust, so its not very efficient for most aircraft, instead we use bypass air and extract more energy from the turbine to run the fan of a turbofan to push lots of air at the right speed to maximize efficiency. Then for big slow aircraft we go straight to a turboshaft engine and run a huge propeller so something like 80x the air is getting pushed on by the screw than runs through the engine, and at the limit we have helicopters where they can be more or less efficient while static.
Getting on to pulsejets, they run off of an explosion meaning they have a brief pulse of high velocity output, but they usually run on slow moving or static frames. An augmenter better couples the momentum of that impulse by entraining a larger massflow and distributing that pulse over a longer time, you get a bigger smoother push instead of sharp taps. Meanwhile a small turbojet, while it does have a fast exhaust and lower massflow, the internal flow velocity usually assumes mach 0 behavior and it’s nothing crazy, ~mach 1 for a hot gas. Using an augmenter here is similar to a really inefficient implementation of bypass air in a turbofan, i wouldn’t be surprised to see it working, but i also can see why it wouldn’t be especially effective in comparison to the pulsejet
Agreed
@@TechIngredients after thinking a little longer, I’m guessing it’s possible to see thrust improvements but the ‘tuning’ of the augmenter design might be quite different than for a pulse jet, and the losses to skin friction drag on the walls of the augmenter are likely to be more significant than for an equivalent pulse jet. I don’t have a good enough intuition here to be confident about what parameter changes might be required though, but I might suggest playing with diameter and length as some first order changes to try and find some correlations to start optimizing on. That may be cost/time prohibitive though
i heard this saying once "its more important to know you are wrong than to know you are right" and i love it. we need to appreciate being wrong some times
Can't wait to see and hear you light up the pulse detonation engine especially. Always love your content.
Ditto 🙂
Been with you folks for over 4 years now. Just shared the Tesla boat video with someone earlier today!
I got excited when you said "Rotating detonation engine". They are the engines of the future.
That's a pulsed detonation engine, not an RDE.
@@edz44 Yes, but he mentioned an RDE.
@@edz44 Now......go back and READ, with your eye balls what I wrote. I wrote "I got excited when you SAID rotating detonation engine. I didn't say the two other engines he had beside him were RDE's....I said the WORDS came out of his mouth. And that's exactly what he says @ the 2:18 mark. Gosh I for one feel better knowing I was correct in what I wrote. You should leave "Trolling" to the experts.
@@edz44 Go back and read what I wrote S.L.O.W.L.Y and tell my why your comment isn't deleted yet.
@@MrDhalli6500Are… are you ok? You came back six hours later just to leave another frustrated comment? At that point I’m actually kinda concerned about you.
You always impress me, not conforming to youtube populism but actually following scientific values to deliver information. The time, energy, research, and money it costs to show these kind of experiments are huge.
Very cool beans. Beans you wish you could be like cuz they're so cool
Thanks for not bothering us with those sponsorships, they are so annoying.
I love this channel.
Dude explains stuff sometimes in such great detail I get lost on the point of the video, but holy shit he's like the genius dad everyone always wanted.
Wow!
You express your thoughts in a well-planned, precise way. You avoid the usual parasitic adjectives and interjections that connote emotions and beg for empathy, but would actually deflect attention from the fine explanations that you offer. This manner is characteristic of an inquisitive scientific intellect that converses with nature through the language of experiment. The description of how and why a turbo-jet engine works is concise and in my view perfect. (There, I fulfilled my moral duty to write a long comment :) But the complement is well-deserved).
Thanks for doing your duty!😘
@@TechIngredients Hello, I think the 2 reasons you gave for the augmenter not working on the turbojet are logical and likely valid, but I feel there may be a third reason as well. I believe the augmenter may produce additional thrust by basically functioning somewhat like an afterburner, but instead of burning additional fuel to get the heat energy it uses to produce thrust, it's simply extracting wasted heat energy that still remains in the exhaust gases after they leave the main engine. In essences it's kinda like a striling engine in regard to the fact stirling engines further extract work from the exhaust gases before expelling them. I think one significant reason this doesn't work with the turbojet is because to some extent turbojets are already designed to do this. Remember in your description of the afterburner, you touched upon how the exhaust from the engine was still oxygen rich. Well, that's because the engine pulls in significantly more air than it needs for combustion. In the engine that additional air absorbs heat and converts it to thrust and work (in turning the turbine) inside the engine. This, is of course, why the turbojet, is already vastly more efficient than the pulsejet. And it likely also explains why the augmenter has no chance of working very well on the turbo jet to begin with.
I love how deep you got here! So few channels (probably none as much as you) do this, and as someone who does some light research myself, I really enjoy this.
I spent a few years working with the two main manufacturers of successful RC Turbines; AMT USA & RA Microjets. There’s a few things that are working against you here, but the main thing is the overall design in several areas. The self-start & cool down motor at the inlet is a problem and causes problems with flow compared to how we used to start these manually. The next major design problem is the burner can design that has so many variables that affect where the fireball is positioned inside. The next is the NGV’s (nozzle-guide vanes) which is mounted at the rear just inside the tail cone and what it’s attached to along with the internal housing. Next would be the tail cone itself and for this turbine to produce the specs it comes with stock. There are a lot of limitations in front of you and the tailpipes we use in the RC Jets we fly need a specific design for what turbine is used.
We’ve already tried a lot of really crazy attempts to make there more efficient but there would need to be another system tied into the FADEC that would adjust the monitoring of the EGT’s to keep the turbine from ramping down. From memory we had the best results from creating a duct for the turbine and then a larger cone that went over the tail cone that was slightly shorter that the length of the tail cone.
The problem in the end is the single stage turbine itself and the design because you’re chasing so many little areas already in place that it’s working against you. There are a few guys in the Netherlands that may still be interested in offering some thoughts.
BTW… the 25hour mark for maintenance is quite amusing except maybe for the first maintenance check because the interval that we used years ago was 250hours on bearings before they needed to be changed so I don’t know how that got so much worse since they are still using ceramic bearings. We had test turbines that were run for a couple thousand hours without failure but they were never in an aircraft or anywhere that there was a chance for FOD.
Keep pushing ahead because I’d like to see what you come up with but there’s some changes needed like that big plate in front of the turbine isn’t needed at all and is causing its own problems. Lastly please know that if you’re using an extinguisher that puts out powder it will immediately damage the turbine wheel, compressor housing and bearings. You only want to put the extinguisher where the fire is burning like with a wet start. Things get really exciting with the wet starts but you will want the ability to keep moving air through to keep the flame “Aft”. We used electric leaf blowers (still do) to cool them down and keep air moving through them the turbine to cool it down or keep the flame out of the tailpipe.
Good luck! It looks like the fun we used to have..!
Always a treat when your channel pops up in my feed. You'll have a million subscribers soon!
I always love how informative your videos are. I’ve learned more about jet engines than I ever knew.
Quality of this channel is absolutely stunning. Thank you for making this content and thank you for not killing us with ads!
Love, love, love this channel! This is why the internet is brill...
The secret is in the shock diamonds when it comes to afterburners. With pulse engines you are creating a stream of supersonic shock waves. So a continuous burn jet engine without afterburner is not creating any supersonic shock waves in the augmenter tube, just drag. Injecting fuel and igniting it in the augmenter tube will produce a lot more thrust and use a lot more fuel. You should also start to see the formation of external shock diamonds if the afterburner is tuned correctly. I believe that eight or more shock diamonds are regarded as being optimum for maximum thrust.
Continue to be in total admiration of your dedication to things experimental. As usual excellent dialog explaining processes. Very glad the channel is doing so well - I well remember your really early output and here you are getting ever closer to 1M subs! Thank you.
Time to wake up the neighbors 😅 when they ask just tell them its your industral hair dryer 😊
I love pulse jets. So simple yet so effective. I built on a couple years ago it worked grate untill the reeds failed. Good times. I cant wait to see what you guys have instore. 😊
I used propane. It wasent grate I can't wait to see what fuel you will use. Jet fuel would be awesome 😊
@@friskydingo5370
Interesting mate!
It has been a while since you did a video. Glad you see you're back at it!
Remember, this is a trade off of velocity seeking pressure. In other words, expect that the stratification inside the augmentor has enough diameter to have far less velocity but greater pressure at the circumference. Hence, far less frictional loss than the smaller diameter you now have.
It's so much fun watching you guys get more and more ambitious, all while taking everything deadly serious.
Welcome back to your channel! Missed you.
So glad to see another vid. These guys are incredible.
Missed you guys, love your content.
Love your channel. You’re like a teacher that only plays with the cool toys!
How are you guys not well over 1-million subscribers? Your channel is incredible and so informative! This channel should be recommended to all STEM students!
sadly because they need better info flow and pacing to get further, they should see rober and stuffmadehere to understand narrative and pacing
Excellent and very interesting as always - thanks!
It's funny, but one thing I really enjoy about your videos is your approach to safety. I've actually tried to model some of my own safety procedures off of yours. Like try and think of the worst possible thing that could theoretically happen and have everything you need to mitigate a big problem like that. And then if you only have a little problem, you're over prepared.
What an excellent video. Thank you for the hard work and cool content.
I’m working my way through my mechanical engineering degree. I appreciate how yall talk about science and engineering topics without it either turning into a dry lecture or clickbaity popscience.
Ngl, I have a fondness for this channel unmatched by any content on the internet.
Oh, I was waiting for these guys
woah, caught this before even a minute passed
since the air inside it drags, is there some internal design that can work similar to the dimples in a golf ball? maybe many rings for vortexes to form in place to reduce friction with the exhaust from engine?
I love it when we get a new Tech ingredients videoooooooo keep 'em coming please
The attention to detail and rigour in this channel is crazy
Outstanding what you do. Keep on!
Propulsion engineer here. Suggest to make a variable exhaust nozzle . Close the nozzle until the thrust is maximum.
Important is to essentially have a near cylindrical mixing channel , not an expanding one (inverse airfoil)
Agreed.
Notice how the duct opens when an afterburner (reheater) expands the exhaust? You don't want to choke or over expand the flow.
This beginning of this video was the best explanation of how a turbine engine works... and you didn't even need to show a cutaway view.
I've always found it amazing that on some turboprop engines, the prop is not directly connected to the engine itself, but is fed high pressure gas from the gas generator/turbine which then spins the prop.
Jet engines are some of the coolest technology ever.
I'd love to see you guys build a jet engine out of an old turbocharger
As an RC enthusiast that flies jets I noticed that your thrust augmentor gats larger at the exit. The augmentors I use have a bell shape at the opening and reduce to around 80% of the intake area as it goes towards the exhaust. This does increase the thrust.
Thank you for releasing us from the hill at that is called ads and we appreciate you for not doing sponsored ads
Long time fan and still absolutely loving the content. This kind of stuff always reminds me how important science and engineering is for our lives.
Looking like a UNIT in that thumbnail
Love it. I was thinking its working on the Bernoulli principal. Like the "blow up a large bag, with a single puff/blow" trick. Also assumed it could only have been friction that lowered its effectiveness, however I would never have figured out the vortex ring effect with the outside motion helping the thrust. Thanks again guys for a great watch.
Back in the '50's there was a tv show called " Watch Mr. Wizard ", starring a man named Don Herbert . He was very much like you, calmly presenting fascinating demonstrations in a straight forward manner. Takes me back, thank you so much.
Was he on that long ago? I remember him as well.
I am amayzed by your courage to sit in front/behind of that thing spinning like that
Thank you for not having annoying sponsorships
Your channel is the biggest breath of fresh air. Thank you for doing what you do. ✌️
I was trained on the T56-A14. We were taught that the turbine produces 20,000hp, and the compressor absorbs appox 16,000hp. It's yield was 4600shp@14,800 rpm. That is a lot of parasitic loss. 80%? The reciprocating ICE loses about 25% through internal drag/friction. Another 25% through the cooling system, and another 25% through the exhaust. So about 25% overall efficacy.
75% of the air coming through a jet/gas turbine is cooling but enters the exhaust stream and is heated adding to thrust.
As an engine mechanic, I am aware that airflow characteristics are a big factor in overall results.
That metal screen at the inlet is a negative towards performance. A smooth laminar flow is necessary.
As an example, I was once tasked with determining the cause for a low output reman "engine". 87%. The components they chose (despite "totally interchangeable" parts) were the culprit. The particular turbine inlet vanes were not compatible with a particular turbine. After correcting the mistake, the unit made 114%. Not bad for a couple of phone calls between NC and Bermuda where I was deployed. The parts and relationship make all the difference.
Afterwards the the CNO said to crossrate or get out. Gotta love stupid people in the Gov...
Commenting for algorithm boost, this channel rocks, and love the idea that you can do this without advertisers 💪🏼
Appreciate it!
Always appreciate your work on these videos. Thank you once more!
We are so privlidged to get this kind of content for free, super engaging, entertaining and most of all educational! The presenter is allso very likable and knows how to teach in a way you WANT to learn, and learn more.
I love this channel. Thanks to these guys I learn every time I watch. Keep up the great work and I'm excited for 1 million subscribers!
I've followed this channel for many years through my other account. It's very exciting how hardcore the videos have been getting
No other channel gets me more pumped up when I see a new video.
Been a sub for years, thrilled with your content, and especially thrilled about your million subs proximity. Keep up the great work!
And this is one of the big reasons that an engine with an afterburner has a variable shaped nozzle, the Turkey Feathers are designed to account for the different in flow due to the changes in the flow, People don't fully understand that basic turbines with a fixed Nozzle are a compromise, they are designed for best performance use at the 'mean' point for the turbine design (typically about 75 or so % operating throttle).
If bolting simple augmentor on worked, GE and RR etc would have done it long ago! It's in their INTEREST to have things like this work rather than hide it away etc.
But what I love about this channel is it's never afraid to fail or confirm a fail... and that's what real science is.. Theory, Test, Understand, Improve....
Never stop learning.
Thank you so much for these videos. As an engineer, these provoke aspirations in me to gain higher disciplines in your craft. Bravo!🎉
Man
I'm studying mechanical engineering in Zagreb(Croatia) and I'm inspired from you to become a good engineer.
Just what to tell you that you have viewers all across the globe.
🔥🔥
Thanks and welcome!
When I was a lad and before I could afford other means of propulsion, I used a device called a Jetex motor, it was a kind of low power relatively slow burning rocket motor that could be reloaded with propellant.
Jetex also supplied an augmenter tube that did seem to increase available thrust.
This consisted of a very light weight aluminium tube with a forward facing cup shaped opening that the Jetex motor was fitted in.
The theory of operation was that this caused an increase in thrust due to venturi effect from additional air being drawn in around the jetex motor by the rocket thrust, then further enhanced by the forward motion of the model aircraft's forward airspeed.
Main difference was the Jetex motor was positioned partly within the augmenter rather than your arangement with the jet engine in front.
You could try moving your augmenter forward to cover the jet exhaust nozzle and see if that has any effect. It may need to be larger diameter at the front for that to work.
Love your honesty, integrity and dedication to educational and scientific content. Please keep doing what you're doing.
I’m here to support the awesome science content of this channel!
Great!
Ejector thrust augmentation is a well studied subject. Extensively researched 1950 - 1970s. The Navy's Rockwell XFV-12 aircraft used ejectors for low speed thrust augmentation. Searching DTIC should yield research papers. I worked on this at WPAFB in the early 70s. Unsteady ejectors work better than steady flow ejectors. The former works via unsteady pressure exchange the latter via viscous mixing. Thrust augmentation decreases with speed. They also take up a lot of volume. Never could find a good use for them.
i am glad you two are making videos again... keep them coming you are a inspiration to a lot of us
We will, and thank you.
Last week I was checking for New videos. YAY!
Great work as always!
One of the best engineering and science channels on youtube
FWIW with the big jet engines you have to wait three minutes at idle from start-up before going to full power, and another three minutes at idle after landing for cooling & stabilising the internal temps.
Great video, thanks!
Thank you for your time.
Most educational channel on RUclips! It should be the most watched.
Agreed!😁
I love how professional, concise and sensibly fun this channel always is. Have been here since the speakers for less than $30 video, and I'm always both impressed and entertained.
Appreciate the amount of work and impressive entertainment value of this channel.
I think your millionth subscriber is not that far away. You deserve all the support you get for your excellent content. You have such outstanding video production standards that the effort is invisible to so many who take it for granted. Well done, and keep growing from strength to strength.
I love your channel and can't wait to see you hitting the million subscribers. You earned it!
Everyone should watch this channel, not only great information but entertaining as well! Makes me strive to be more inquisitive, that scientific approach though; 10/10 thank you gentlemen.
I love this channel. My favorite channel hands down. I always prefer your content
the content you produce is always absolutely top notch. amazing technical detail.
Im just so happy that I gound your videos again, My account on youtube got all screwed up due to a nasty hacker problem but as soon as I found your videos I watched a bunch if your videos again so stoked to
have rediscovered you guys Ive missed your videos greatly!!
Welcome back!
The force generated and lost due to friction and the rapid fuel burn are all superfluous to that incredible music the turbine makes!!!
It's been a long time since I found a youtube video fascinating and engaging enough to sit through 40 minutes without a single pause. This was incredible.
Love this channel. Engineering every kid would have loved to but never had the funds or the parental approval. Glad to see a parent who is still a kid.