Homemade Axial Jet Engine Part5 - Compressor Blades
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- Опубликовано: 8 фев 2025
- Here I am making 4 out of 5 of the compressor blades. I started off making 4 but realized soon in that my plan of making the blades would not work so I have to think of something else in the meantime. That will be shown in a video with the exhaust turbine.
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Good to see younger generation keeping imagineering alive!
I absolutely love your little lathe! that is beautiful.
Super cool stuff! Axial compressor design is tricky stuff, especially at small scale since the specific speed of the spool is very high. For engines of this scale a centrifugal compressor is going to be way more effective and efficient. I wanted to build an axial compressor for microturbines one time, but I realized after doing the math that it wasn’t feasible for anything other than for fun since centrifugal performed so much better. If you want to get more performance than a centrifugal can provide, just add two! You could get up to 12:1 pressure ratios with sequential centrifugal compressors and a single stage axial turbine. Anyways good luck on this project, axial flow turbo machinery is fascinating.
0:01 That one time when a band saw would have been really helpful
9:34 that other time.
Great work! Thanks for sharing!
thanks!
Bro the test in the end says alot. Your compressor and shaft need balance or it will tear itself apart at 10k rpm or, in the best case, it will have a very short lifespan because big vibeation like the one you have will cause the material to crack and fissure, leading to engine fail. It's not very difficut to balance a blade once you know how it works, you may ask for help in a local car repair store, it should be close to car tire balance process
Have you got any idea how could we balance it at home
Ahhhh yes it bring back old memories when I to used to build jets turbines
Wooww
What do you do to curb vibrations
I’m sorry! The music has stopped me from watching ‘‘this video!
i am waiting to see the complete jet engine
i have a video showing the completed model
Are stator vanes not necessary in miniature jet engines?
I think they are just as important as in bigger jet engines. otherways the air going through is getting too much rotational Velocity which makes all the compressors useless exept the first one because the angle of attack becomes close to zero.
they are needed to produce pressure to even get the engine going anywhere
Hi! Excellent work! Have you tested this engine in computer environment before building? If yes, can you give me the name of the program that you used?
no unfortunately not it was all designed by hand using the basic principles of jet engine design that i have learnt about from others and online. If you know of any simulation software that i could use please let me know and i can model it up and see if i could get a theoretical run.
@@mikeylt999 let me advise some.You can analyse your drawing in ANSYS and CFD and you can see air flow through the component and see it whether it is enough compressed or not.
@@ramazanoruc8339 thanks a lot i will look into this!
what i would like to know does it run?
I"like this one,this is true totorial,,utube?,step,one by,one"how to make torvine,,engine,
I'm thinking of building a really small one with the diameter of the outer case being like 3 cm, are soda cans thick enough to make the compressor blades? sorry for my ignorance xD
also i'm referring to the front part of the case where the compressor blades will be, sorry xD
Hey, very unqualified jet engine enthusiast here, and with the thickness of soda cans, I highly doubt they’ll work past a few thousand rpm
Verry nice Creative bosss
where did you get those templates
Your compressor blades are all similar in diameter, how can they compress air? Let us analyze your set up. All your compressor blades are mounted on the same shaft and these compressor blades are similar in diameter and blade configuration. All the compressor blades will therefore have the same RPM. All the air volume sucked in by the first compressor blade will all be sucked in by the second stage compressor, therefore no compression will occur between stage 1 and stage 2 compressors. The same event will happen no matter how many stages you employ. Since no compression exist, theoretically your contraption is a multi stage blower. Hope this helps.
first even if thats true you can compress air by having stator stages.Also his inner diameter changes and that increases pressure too
I have never seen a turbine engine with different size diameter compressor stages. As Billy states he has the right idea although four stages of compression will not create enough compression to do anything even with perfect blades and stators, you would have to quadruple it. Lastly, it is not too difficult to make a turbine engine that self sustains rotation. What is difficult is to make a turbine engine that creates useful thrust or power. Those are two completely different things. Based on the engineering (or lack thereof) of this model, not something this engine would ever be able to achieve. In any case thank you for your video Michael Lawton-true, always good to see people experimenting and keep at it :)
pas mal pour un début. mais le compresseur?
Look up velocity triangles
i know but i didnt have enough time when filming like i didnt even profile the blades which is prety major
@@mikeylt999 wwwertyu العراقين
Your project is extremely interesting, what book is it you are using in this video? i would like to have a read through it. thanks again and keep up the awesome videos.
hi its actually my custom plans i designed everything myself and didnt really have any reading material while doing it
They looked like giant washers
Your 'lathe' appears incredibly out of true. Have you put a dial indicator on it? It is kind of the whole point of a lathe. Your blade sections will need to be concentric and WELL balanced or it will shake itself apart. This build is ridiculously budget, and bush league, but I have seen worse and it might work. I would have used a jig to make the blades at least with a consistent angle. OD clearance to the compressor can needs to be close or your losses will be too great.
yeh my lathe is i have shimmed and spent many hours with a dial indicator and trust me that is far better than it was. I defintly cant afford a new lathe because i dont have a job, i got this for free from my old school so i was happy to recive anything to be honest. I do however see your point with od clearance, its less than a mil all the way around the pipe which will lead to losses but as you say very budget build. The blade angle are going to be corrected with some sort of jig most likely mounting on a shaft and pushing a block up onto each blade at a set angle ie 30 degrees in respect to the shaft. i am planning to balance it between bearings like suspended and grinding bits of the seperators away and that should hopefully remove as much vibration as possible. I dont expect this to work i might point out also, mainly because of the friction in the bearings i can bearly spin in up to a few thousand rpm let alone enough to even come close to idle. This is also only a school project i hardly have a nasa budget when it comes to things like this and i think of myself as lucky to have what i have.
I will be watching your build. You can join jetandturbineowners.proboards.com/ where there are many experienced builders to furnish you with advice. I think drilling the single asymmetric hole for alignment will also be an imbalance problem. A bit of forming of leading and trailing edges of blades by grinding would help efficiency. Check out his site: www.rcdon.com/html/gr-5_turboshaft_engine_project4.html where he builds his own power turbine.
i am already a part of that forum but thanks anyway and yeh i was planning to add a profile onto the blades so that it would increase efficiency, do you know if i should do the same on the statro vanes or keep them flat? also i do wish now that i had done some other design for the compressor blades like on that website as i think i would have been able to get them far more efficient in terms of uniform profile and cross section throughout the blade.
What's the thickness of this metal sheet you used?
What metal have used ?
2mm
What metal have used ?
Can I cast and make every part it from nosecones to turbines
I need to know about defuser and combustion chamber. What exact distances and sizes of holes are required to maintain stable flame inside the combustion chamber. I am failed to maintain it. Pls help. 🙏
Why does everyone pray to the hole pattern? Fast combustion should happen ( and mostly finish ) in the stochiometric section before you dilute ( cool down ) the flame using the holes. We all have seen a burner in chemistry lessons. Mostly you need big holes in front of the stator vanes to keep them cool. And a rings of small holes for a film on the outer cylindrical wall and the inner hub.
Good job
Which material did you use for the blades? and what is the thickness of that metal sheet?
please reply.
Mrunal Cr off the top of my head it’s some galvinized mild plate which is not ideal and I can’t exactly remember it’s around 2mm? I will check later and reply with exact measurements
@@mikeylt999
Thanks a lot.
can you also tell me the temperature at the end of the compression and at the exhaust for the model, I've been looking for the information but didn't find it anywhere.
Great gob, use Alcohol to remove the paper, works great
You don't know where ill buy jet propeller like that
would you be willing to sell me a copy of the prints to me?i have cd and the cd does not make it clear but the one im looking at is real clear.so give me a reasonalble price and i will buy from you help for your collage
your dumb
Hellow to I receive part one 2 3 4 please help me
Yo aprovecho las aspas de las licuadoras en desuso.son eficientes y calibradas..
Jet cyclo copter
👍👍👍👍👌👌👌👌👌👌👌
What’s with the funeral music, aah, all the music. Could you find anything that fits the video worse.
Quite possibly the worst "music" I've ever herd in my life. No thanks. But love what your doing, just lose that God awful music
tell me about it haha i know it sucks wish i had used something better
Michael Lawton-true Try narration, I’m sure it couldn’t be worse that the music, plus informative. Good craftsmanship.
save us from that "music"
LOADS OF MISTAKES