Видео

If you're only putting gas in it'll never sustain. Introduce liquid fuel.

Hello, can you help me if you know where I can find the calculations for the model jet engine, such as the diameter of the combustion chamber holes?

Hello how are you

Le roulement à billes après la chambre de combustion est une erreur. Le compresseur centrifuge est sous dimensionné par rapport au diamètre de la turbine qui absorbe toute l'énergie. La compression est-elle suffisante, j'en doute.

it's so hard to design a self-sustaining jet engine! great work, hope you manage to finish it!

Nice project. On the other hand, if you want to use gas for the tests, it's a big propane bottle. You will not operate properly with a camping gas bottle. If the turbine wheel is made of Inconel, the reddening is not dangerous, especially at very low revs as is the case in your video. Good luck, you're almost there

If the sheet thicker do we need more time to bake?

Lots of wannabe engineers copy & pasting googled information here but nobody talking about holding a cigarette lighter at the back of the motor in a 25kmh wind, or igniting fuel in the tailpipe and expecting it to light something 7" further back inside the engine. Although it's fun to reinvent the wheel, perhaps the wisdom of having an ignition point inside the combustion chamber or at least further back was always a good idea.

I think that perhaps the word "Homemade" has a different meaning in Germany. Seems to me that most of the work was done by engineering companies.

Awesome project! All my life I wanted to do something like this and how I can see it come to fruition through your hard work. Well done, mate!

Hello, I came to this video after watching the test run videos. You made BS again, your engine cannot run even 100 years later, sorry for become rude. Here are some advices: you should read Kamps's book 4 or 5 times, or you will 'invent' some weirdo thing 1. Important thing about jet engine is "mass flow rate". The quantity of air it sucks per second equal to its efflux gas in kg. It means you have to carefully calculate and choosing the right compressor wheel and turbine wheel to make their flow rate are matched in design stage. Some random compressor wheels and your 'invented' turbine wheel won't work. 2. You have no idea how a diffuser works, that's why the air flow in compressor is easily breaked and produce no pressure 3. I just glanced at it and saw that your jet engine has so many problems, not to mention the design only, but also the poor workmanships: the material choosing, the tolerance in machining and assembly, dynamic balance...going back to my comment above, read Kamps or Kurt's books 5-10 times to equip yourself with enough knowledge, otherwise give up on this project or you will waste another 10 years

Haben Sie darüber nachgedacht, am Turbinenauslass einen Kegel anzubringen, um den Abgasstrom zu lenken und den Gesamtstrom zu verbessern? (Entschuldigung, falls es Rechtschreibfehler gibt, ich benutze einen Übersetzer). Grüße aus Argentinien

Can anybody plz tell me that which sheet is being used in this video

Das war so gut , Aber warum kleine?

You can clearly hear that the engine has a bearing failure so why try again and again and again?

ruclips.net/video/rDLy8fTopp0/видео.html&ab_channel=LotharZimmermann

ruclips.net/video/rDLy8fTopp0/видео.html&ab_channel=LotharZimmermann

Nur käfiglose Keramiklager, alles andere hält keine 125000 Umdrehungen aus.ruclips.net/video/rDLy8fTopp0/видео.html

i think that you need to put the injectors on the other side with reverse flow like in normal rc jet engine, is more efficent and burno well

Noooise. Try to heat up gas a little with warm water

1:31 Ja, aber dann hat man das Problem, dass sie schmelzen, weil im Vergleich zu Metallabdickungen schmelzen diese Gummi-abdickungen mit sehr wenig Temperatur, und in so einem Triebwerk gibt es eine Menge Temperatur...

Why do you need this engine? To show that you can do it? You have the ability and ability to do it, I have no doubt about it. But who do you want to surprise with it? General Dynamics or Pratt & Whitney? A more interesting option is to create a rotary engine and compete with Omega One Egine or X-Egine. I think you can do this. If you are interested, let's talk about this topic.

How much price

Could you use a motorcycle fuel pump to feed the fuel system works great? you still need make a 2-stage diffuser, this one won't touch the intended engine, it's getting there. ruclips.net/video/IWQbqXZJZ48/видео.htmlsi=TDqeeNCWZmom3G8F

Hello sir I love your work and I would love to contact you so we could make something funds together

What language you speak the video title in English!!

Not creating vacuum or boost, which is why it’s not running on its own. Your fuel supply needs to be referenced to your engine, electricity via sensors or a mechanical reference. An oil fed bearing system would help a lot. Good progress so far.

just as a question, how much normally do each of these CNC milled part cost?

Great job sir how can I talk to you please I would love to work on a project with you I build and sell drones in Nigeria and I have a cnc milling machine please sir I would love to hear from you

Very cool! I am also currently building my own small turbojet engine (body diameter 70mm) Now I am building a test bench and an afterburner. My engine ruclips.net/user/shortss1JnozlLdV8

Can it not run without compressed air? I think solidworks can do airflow simulations to test a design before building it. Might be good enough to design by

Nice. Any parts from inconel? how much did the parts cost to get machined?

Gut, ja sehr gut!!! Herzlichen Glückwunsch!!!

"...the company that milled this for us..." Not homemade.

for the next tests in my opinion it would be more appropriate to try to install a pump and use kerosene with the engine hot, furthermore due to the high revolutions that a turbine makes the bearings should be constantly lubricated, which from the video does not seem to be done, in fact jetcat uses oil inside the kerosene which first passes inside the hub with the bearings and then comes out to be burned

Is the CAD file open source?

Start it with a leaf blower. It will keep it cooler. Also, you can dynamic balance with a smartphone. Stick weight to a blade, spin and measure, repeat for each blade and look at the results. You can then work out where you need to grind material. 😊 Youre welcome.

Hey, congrulations to your jet engine! I think it will be more easy to self-sustain it if you use kerosene or diesel mixed with oil because the efficiency in these fuels and use the propane for only do the combustion chamber preheating. Also, I would do a bigger compressor intake to avoid very high temperatures in your turbine wheel.

Could be exhaust nozzle area causing mass flow restrictions. Try out a few different sizes - larger or smaller

I think installing a Bell mouth on the air intake will make it much more efficient.😀

Vielleicht gibt es eine einfache Lösung. Du brauchst mehr Luft/-druck. Es sollte sich ja eigentlich selbst mit der Luft abkühlen. Und mehr Druck bedeutet auch Selbsterhaltung. Bau vorne ein 3D rahmen dran und und vielleicht noch eine etwas größeren Intake Fan. Das ist wirklich so minimal intensiv, das es sich nur lohnen kann es auszuprobieren… ✌🏻🙏🏻

Du brauchst einen richtigen Diffusor! (mit“Keilen“) sonst gibts nie Druck.. Einspritzung um 180 grad drehen. Lager muss mit Feder vorgespannt werden … melde dich mal ! Dann kann ich dir meine 800N Turbine zeigen, ist ein Eigenbau 🎉 beste Grüße

von 6:51 bis 6:56 verliert sie an drehzahl weil du ihr zuwenig gas zuführst, danach erhöhst du die gaszufuhr es ist aber zuwenig um auf leerlaufdrehzahl zu kommen (0,1par). jetzt einen neuen startversuch mit voller gaskartusche.

I honestly at this point don't think you understand the point of a jet engine and have a mindset of the tolerances required to have it be efficient and self sustaining. That said, alot of work still goes into what you have done, and thats nothing to ignore or deny. Considering the following: Your power source is your liquid fuel, and the thrust is what you're after. What you have right now looks like nothing more than a flame thrower. Where does your fuel come out? How does it burn? You can't just have an essential lighter inside of a big chamber with alot of gas and an explosion happening with alot of turbulent air. The whole burn process needs to be extremely well controlled: The burner pipes need to have extremely tight tolerances and create makeshift fuel to air burners. The fuel pours in through the feed line and comes out at all the pipes evenly and then is evenly ignited at all sources. Low speed moving air supplies the entire combustion chamber with fresh air. The exhaust pressure causes the turbine to spin, which drives the compressor, which brings in more air. But just because you have more air doesn't mean you don't need more fuel. And yes, your rotational parts still have horrible problems as evidence via how quickly the whole thing winds down to a halt. It needs to be so smooth that the blowing on it with air (not even compressed air, just the air from our lungs) can move the rotational parts of an engine that small. Why? Because why lose all or any air-to-rotation power change or rotational_power-to-air speed change to friction. You have alot to fix but if you fix all of the above, you wont even need that spin starter. You would just need to finger rotate compressor, light the burners up and then watch the whole thing accelerate on its own. I'm serious. This is all that is required. Best of luck fighting out the whole bearings issue though, that will be tough, and you do need to make sure it's perfect/measured perfectly, all sources of friction removed.

SO close, massive congratulations for getting this close . I couldnt tell you what needs to be changed to get it to self sustain but if I was to point a finger at anything its possibly just the exhaust shape being too large , maybe there is too much vibrations but Ive seen honeywell APUs spit way more sparks out of the exhaust before ' Self clearance' lol

First of all congratulations! I am watching from your very first videos on the jet engine. Yes blades do heat up enough glow. But that's for short time. Once it move further from self sustaining, it cools down. I also have problems with gas consumption 😂 But thats the main thing .. so can't complaint about it.

Your hard work's starting to pay off!

Ну, почти получилось. Надеюсь, скоро будет нормальный старт.

it ran! not efficiently, but it ran on its own nonetheless!