Handmade Jet Engine, First Thrust Test With Afterburner at 1Bar
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- Опубліковано 24 бер 2021
- Hi,
not so happy with the result!
Sound and flames are incredible, but the thrust is missing a lot.
Will see, how to fix it.
For interestd people, here is a link to the build thread.
Für Interessierte, hier der Link zum Bau.
www.rc-network.de/threads/tur...
Andy - Наука та технологія
That's one hell of a machine to build yourself, respect
Damn, that's one hell of a project. Even the precision needed to balance all the parts so it doesn't shake itself apart at 50krpm is insane, mush less the actual design.
If you told me someone could handbuild a jetengine, id be like, nah bruhh, the precission needed is insane... But this guy, holy smokes!
@@GamersTrashTalk
Indeed. Now, a pulsejet engine is a simple enough thing to get running, but a turbojet engine is not. At least one that runs under it's own power and doesn't need a constant compressed air supply. Personally, it's on my list of projects to do in my lifetime, but if I will achieve it or not is another story.
@@theLuigiFan0007Productions You never know until you try! If you really wanna do it, go for it! That would be awesome, and even more if you make it work :)
@@theLuigiFan0007Productions id say that making a simple sore thumb type turbojet is easier than a pulsejet
Bro, he used press to bend things in place, I'm absolutely speechless and horrified at work some humans are capable. Now I just need to befriend him to help me create a hybrid EDF jet or EDF with burners
I'm sure that windmill started turning a bit faster..
i see it to 😃
The windmill booster
First thing I thought about also!
LOL
People are trying to be green energy miners. A nearby dude burns 10 liters of kerosene per minute. :)
You reach next level when you see row of blue diamonds in flame.
I think he needs to put a bit more work into the nozzle design, a properly proportioned convergent-divergent nozzle, though figuring out what all the dimensions should be would be challenging. I don't know if 1 bar back pressure would be enough to produce supersonic exhaust though.
@@quillmaurer6563 what about them moving turkey feathers that u have?
@@trevoncowen9198 What are you talking about? Doesn't make any sense
Shock cones, they are called Shock Cones, the nozzle should diverge when the afterburner kicks in to retain the proper flow and pressure you run the risk of a compressor stall if the flow is interrupted by excessive nozzle pressure.
@@quillmaurer6563 not so challenging. the main principle is that the nozzle should converge until so called critical section (narrovest part). The sectional area of it should make speed of air through it equal to 330 m/s (1 mach). Then nozzle should diverge as much as possible but not allowing the flow to detach itself from the walls of the nozzle (i'm mig29 technitian)
This was thoroughly enjoyed on my end, I can only imagine the smiles its giving you in person! Time to install a scale-sized fuel truck along side, eh?
Just about need a full-size fuel truck for this!
hi, the afterburner must be engaged when the RPM if about 96% and the EGT reach more than 650°C the afterburnerr is a plus power for a engine full throttle.... and your power with afterburner is perfect... you have a 15 kg and with afterburner you reach 20kg... the normal power in the engines with afterburner is about 50% more than without aferburner so 5 kg more is a beautifull power... im happy for you... your work is realy perfect!!!
i think, maybe you need extend the afterburner tube some centimeters..... because i see the flame too orange and inyect fuel with less pressure and more qtty .. you are to some steps from the blue diamonds.. when you can see the diamonds, you reach the match = 1 in the throat nozzle
Now this is a man with some free time on his hands! Glad to see he used it wisely. :)
Dude this is damn impressive! I hope you can get the efficiency and thrust you are hopping for!
You are a mad legend but big respect for design and build a jet engine
You did it, well done! The first UA-cam video of a self-made; engine, variable thrust nozzle, and afterburner. Definitely the winner of the triple crown for online jet engine design and build!
The only challenge left is to design and build a Turbofan, no youtube video appears to have achieved that!
Hi,
Thank you!👍
A friend of mine built already a working Turbofan.
Check this video😉
ua-cam.com/video/3yde9jzF8kI/v-deo.html
Andy
DAS ist mal ein vernünftiges Hobby!
Leider nicht ganz legal in Deutschland
Also zumindest nicht ohne Genehmigung.
Und die grigt mann sehr schwer
@@ogpsy574 wieso soll man keine Triebwerke selber bauen dürfen
@@sebastians6028 genau das ist die Frage die ich mir auch stelle
@@ogpsy574 ja ok, aber mit welcher Begründung
@@sebastians6028 . Weil das eine Gefahr darstellt wenn man nicjt dafür ausgebildet ist
Cannot wait to see a full fighter plane of this engine ❤❤🎉
Übelst beeindruckend! Wahnsinn !!
Best looking afterburner combustion I've seen on a homebuilt. Nice work!
at least it didn't malfunction.
thrust profile can be worked on :)
great work thus far!
Der Hammer, Hut ab vor allem für deine Ausdauer am Thema dranzubleiben
Congratulations! This must give you a tremendous sense of accomplishment. And Happy Easter, too!
Hi Stravo,
Thank you, happy Easter ;-)
Andy
Man that's actually awesome you built that. Greetings from Canada!
Amazing to see how much work has gone into this and the awesome results! Maybe in the future we will see you build another in the future to use on a model or a small plane or even a car?
Very well done job! Hope to see more of this project in the future too 👌👌👌
Приветствую всех любителей турбореактивной тяги!
Негоду забаннили! По этому, турбореактивная тяга отменяется
Норм всё, разбанили 😌 турбореактивной тяге быть 🤤
This is very impressive. Keep up the good work!
Einfach nur geil. Sehr schön
The most beautiful afterburner from a handmade jet engine👍
I built a small jet engine too (66mm turbine), but mine didn't have a afterburner.
Nice job, well done! 😀
Hell yeah what a nice piece of modern marvel you made right there..👍 that's so badass.
You made that! Awesome 👏
Impressive ! Great ingenuity !
I love seeing people build stuff like this
That's awesome man, well done
Hugely impressive! Subscribed.
Awesome, man ! Keep up the excellent work and post videos please !
Very impressive ...! Good Job..!
Super!! When you get the blue flame i think the trust will go up 💪... you will manage it...
Eine turbine!
Sieht echt gut aus, so haben wir alle unsere Tüftler Projekte.
Oh man, that look cool!
Einfach Nur brutal. Tolle Arbeit!
The afterburner sounds amazing. Just have to figure out a bypass for willing air around it somehow and it’s set to go. Great work! 👍
That's amazing. You have my respects.
Dude, that is fully, totally awesome. The noise level must be deafening.
You should choreograph the afterburner light off with the sound track song
“Danger Zone” from Top Gun. How is the fuel consumption at AB light off?
You will impress many of the radio control jet jockeys with your AB. Good
job. You did your research well. Like to see “To be continued” of next progress
with an element of surprise.
Very cool, thank you for sharing 😊
Looks bloody hot to me!
Awesome stuff, keep it up sir!!
beautiful work!!
WOW!!! Well done , excellent.
Woow du hast echt gut gebaut 👍
Convergent Divergent nozzle is what you need that will dramatically increase your gas velocity making more thrust. I can't tell but just squeeze down the nozzle will increase gases but look like a nozzle put around that nozzle so it can pull air around it will increase gas velocity. Look up j79 turbojet nozzles and you will see..👍 Great work brother
OH HECK YEA! Great work.
Einfach nur herrlich!
Very Impressive Engineering!
Very impressive.
"Hey bro, what do you do with your spare time?"
"Oh, you know, I like to read, take walks, and *build literal jet engines*"
wow!!! damn cool build!!! bravo!!!
Very nice... especially the car ramp the powerplant is on. :)
It looks to be pretty efficient in its burn, looking at the flame burn image ☺️
Very nice engine!
Great job! I like this. One problem I see you need is an air flow boundary layer across the inside of the turkey feathers. There should be an air gap between the engine and the turkey features mount all the way around engine to allow an air flow boundary layer to develop between the afterburner exhaust and the inside of the turkey feathers to keep them from glowing red. The air boundary layer will develop naturally when the Afterburner exhaust will exit the engine and suck cool air in from around the outside of engine into the gap between the engine and turkey feather mount. You may also need to enlarge your diameter of your turkey feather ring just a bit. Still a great job well done.
Your right but it's called a nozzle not turkey feathers
@@paulaxton72 my dad and I are both retired fighter pilots, turkey feathers is a slang to describe the variable vane exhaust nozzle or nozzles.
Do you mean makes the engine has bypass ratio for efficiency?
@@Bren.nto6971 No, I think they were referring to the nozzle at the very end of the afterburner, the vanes that make up the nozzle ought to have small openings so it would suck in cold air from outside the engine and along those vanes so they don't get so hot.
@@Bren.nto6971 What I was meaning is is the tail pipe is glowing red.
So you have the inner pipe, where the hot gases exit the tail pipe, then a boundary layer of air, then the outer pipe, the inner pipe a has perforated holes 360 degrees around the inner pipe and down length of the pipe, that allows cool air into the inner pipe keeping it cooler.
That is a long antenna on that transmitter! That is some old school schiznit right there!
Nice Work, well done ;)
Das sieht doch schon ganz gut aus!
Please put this on an rc jet airplane if you can! It would look so badass with the afterburner
Very nice! I love it!
Awesome project.
That nozzle doesn't seem to be enjoying life.
Props for building it!
Das nenn ich ein Osterfeuer! Top!
Very impressive!
I would probably install some type of inlet gauze just to make sure no FOD can enter the inlet and damage the engine.
I know it will slightly reduce the efficiency, but even a bumble bee or some oversized insect could destabilize and potentially destroy the engine, much like a birdstrike in full-size jet engines.
My neighbors would love this!
Man oh man I got just one word Awesome!
It has to make some big thrust in order to keep the windmills behind spinning.
Big Toy $$$$$ excellent . wow camera work super.👍🇦🇺
That is very impressive, seems very smooth running the cost of the fuel would be the only reason I would want to turn it off, love to see two on a motorbike, sky's the limit :-) what a machine.
that's freaking amazing dude good for you lol good god though I would love just to have a smaller turbine, this is wild; I was looking at just attaching a small turbine to a glider or something, this changes everything. The progression of life itself in our innovative ways of nature is obviously never going to slow down, and still amazes!
Hi Josh,
Thank you!
Andy
Ein wirklich schönes Ding
Congrats!
just a thought on using a mechanical scale to calculate thrust if the temperature of the scale increases you will throw off the reading as the spring rate will change. If you took this into consideration disregard. Great work love the videos
Dude, that afterburner packs a massive punch & a half. That's friggin' awesome.
=^/,..,^=
Nice work nice engine
That's cool stuff.
Great job.
Dam so awesome dude you first to make this
Great work, nice to see some numbers here. The afterburner does a pretty good job even though it comes with losses when inactive. It seems like some pulsing of the afterburner flame stimulates resonances I may have heared. How long is the afterburner overall?
Hi Jakob,
the strange sound came from the variable nozzle.
Not all screws were tightenb because of adjusting aftes the run.
Also when the nozzle is wide open, a lot of space between each lamella causes the sound.
The afterburner without nozzle is 40 cm long.
Andy
@@Praendy amazing work Andy it was great to see your progress and build with your workmanship if Germany gives you a hard time about the fuel you can get this to run on Hydro diesel with a little jet oil I saw it done on a hobby jet engine with no afterburner or nozzle he lost around 15% thrust as opposed to jet A fuel. I saw your work on the nozzle and was wondering where was the afterburner? And now seeing it all together I am beyond impressed and 👏 I would ove 1 of your engines for an Experimental design I'm working on .what is the pounds of fuel per hour at your altitude and @ what % would love to know the numbers when you have them. Please let me know 🙏
congratulations!
I was waiting to see this video if somebody is going to build one of those or not
beautiful!!
Now all you need is a tanker to fly up to after take off, and fill the tanks again. When I was over in Vietnam, our F-4E's took off, with full fuel load, they had less than fifteen minutes to find and hook up to a tanker and start the refueling of all the ships, if for any reason they failed, they had just enough to get back to base and land.
Very amazing I must say. I notice it is not a good exhaust circle though when I was watching the flame from an angle. Does that affect the effectiveness of the thrust? Meaning if you were flying with this would the flame not be perfectly straight and un balance the craft when firing?
ยอดเยี่ยม มาก คงจะเร็วถึง มั๊ค ได้นะครับ
I wonder what it is that's so satisfying about the high pitched noise of a jet turbine.
Nice! Excellent job on the reheat section. Those mach diamonds were impressive. Something I was thinking, a good improvement on the design would be to tap some bleed air, route it to a manifold, and inject it into a liner in the reheat section to provide some cooling air for the reheat casing, and some film cooling for the internal nozzle plates, if it has an internal/external plate system. Perhaps also adding some external cooling air vents for cooling the external nozzle plates, if equipped with an internal/external system...
Hi Jeff,
no worry, the nozzle is made of Inconel and I have a double liner installed.
Andy
It is interesting to see the analogy and similarities in temperatures between the power efficiency of a jet engine and a boosted combustion engine, close enoguh compressor and exhaust temperatures, ok, I know I know is basic thermodyamics for most of you but it is interesting to see.
*_Genial._* 👍🏻😲
Wünsche dir viel Erfolg bei den weiteren Versuchen und dass die Turbine irgendwann mal in einem RC Jet zur Verwendung kommt.
Ich werde deine Arbeit von nun an mitverfolgen. 🤗
Danke Dir👍
Ein Einsatz in einem Jet ist leider ausgeschlossen, da ich "Null" auf Gewicht Wert gelegt habe.
Das Ding mit Nachbrenner wiegt 18 Kg😉
Meetings, oder Jettreffen kann ich mal besuchen, gibts aber eher selten im Raum Hannover.
Mfg Andy
Better than I could build by far. That being said, looks like you may need more cooling air. Is there any bypass air from the compressor you could use to cool the augmenter? Most current afterburning turbofans have a perforated inner liner that has bypass air flowing between it and the outer shell, this would give you a boundary layer of cooler air to help keep the augmenter from getting to dangerous tempatures. Another thing to consider is only activate AB when the core is at full spool. This will also help with cooling.
Hi,
I have an inner liner with a lot of holes.
Its similar to the J 79 engine.
It uses exhaust air in a small gap between inner and outer liner, to "cool" the afterburner outer pipe.
No worry, the nozzle is made of Inconel.
Andy
I bought a torn down engine from a bell ranger helicopter prolly like 2008 and my buddy who was a b2 engine mechanic helped me assemble and set it up… we got it together but didn’t have the electronic controls to start it properly… I snagged it from a college aviation surplus sale for $450 and sold it to a hobbyist for $7500, i split the money with my friend but we never did get to see it run… I was really excited about it… it was nearly this big.
Incredible achievement
Looks like you are experiencing a choke. There are more air generated inside of the afterburner, but the flow speed is not fast enough to let them leave the nozzle to generate thrust. You need an adjustable nozzle that can shrink the area inside but on the back to enlarge the area, to create a Laval nozzle to accelerate to sound speed at the choke and continue to accelerate (now through expansion) afterward to supersonic. Then you will see the Mach diamond that Juha talked about.
Definitely, best result with a C/D Nozzle.
Wonderful!
Dude your channel is about to explode, we would love to see your process--you could use the funding :) I'd watch every ad
this is awesome
Excellent!
Ahh!!!! Echt grandios!
thats one way to keep your driveway clear from weeds