Compressors - Turbine Engines: A Closer Look
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- Опубликовано: 5 апр 2012
- Lets look around inside the compressors of a few different turbine engines. How does it all fit together, where does the air go, and how does it work ?
Watch the sequel, made in 2023 here: • Axial Compressors : Wh... 
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4:18 I didn't know the blades supposed to be loose. Learned something today. Thanks!
Till they get hot.
Because of the heat, the metal expands thats why it needs to be a bit loose
@@virginiemoniquejavier2927 coo
They become locked under Centrifugal force at speed. Windmilling at low speed can result in significant wear of the compressor blade roots.
I have filed and/or replaced countless numbers of compressor blades on the J79 during my air force tour of duty. bird strike compressors were nasty to repair/replace because of the odor of "cooked" bird meat throughout the motor. I once found the impression of Abraham Lincoln on a first stage compressor blade, one of the flight line crew forgot to empty his pockets before intake inspection of the RF4C Phantom, his nickel cost a half million dollars in motor damage.
Well that dude is now one nickel poorer
Randy Morris I guess Abraham Lincoln is in nickels now
SIDA i was gonna say that lol
My dad flew the f-4d in the air force, he had one get shot up and it still flew back to base.
I have survived many F-4 accidents.
This is incredibly educational. Thanks so much for sharing this awesome content.
+CreativeType I'm here for you creative types. Thanks for watching!
1
@@AgentJayZ I used to work on natural gas and diesel turbines for energy production. Is this type of wear common on what I worked on or is it more for aviation engines? We used to regularly have to do blade grinding at service intervals, which is why I am asking.
@@AgentJayZ thank you very much sir, i.am.grateful. i never knew about this
It is not educational, it is indoctrinational, if anything. Nonetheless, it is interesting.
Ich kam mir vor auf einer Zeitgeist. Zurück in meine Ausbildung 1980. Das waren diese Engines state of the Art JT8 d7 / d15 etc.
Sehr schön und plastisch erklärt.
Like a trainer👏👏👍👍😎
As a student pilot this video is pure gold for me. Thanks.
Amazing, thank for the video
5:10 : scariest wind chimes ever
I enjoy it
@@russbus3930 It was absolutely wonderful
Agreed it’s pretty cool and creepy music. Quite magical. Lol.
@@dasonjohnson7118 I dont think thats what he meant.
The genius is the guy who designs the size and angles of those blades.
This was awesome and that cutaway is awesome. I have always been fascinated by jet engines and have never had the opportunity to see such cool stuff. Thanks for uploading these!
I can not say how much I am really thankful for your sharing of such precious knowledge
Was reading a favored financial blog and someone posted a link that brought me here. What a cool surprise. Video length 7:47 ((: I forwarded your J79-Turbine Engines: A closer look vid to my 92 year old ex-Lockheed engineer Uncle Bill. So now you have two new devout readers. You Rock. Cheers ~Valerie~
Incredible the amount of precision that must go into building something with such amazingly tight tolerances!
Im guessing a robot creates the metal bases
I thank you for this video. Because I understand how it works. When learning something, books give me an idea on how things work but not at this level. Thank you 🙏
The way each stage is clocked in relation to the one behind it is absolutely mesmerizing.
timing this engine would seem impossible to me...
Look up "velocity triangles" for turbine blades, and be amazed; that's how to calculate the angles between the blades
I have been watching your videos on RUclips for quite a while. I have learned so much about how a jet engine functions. From compressors to afterburners. From lubrication to working air. Thank you so much for putting the hard work, on "your" spare time to create these videos. I had the opportunity to go into the military to become a jet engine technician, but I was young and dumb and now I realized that I missed an opportunity of a lifetime that I could enjoy. Agent Jay Z, your an amazing guy who goes out of his way to share his passion for jet engines to educate people who wants to know and learn from this. I can't say enough, but thank you again! Canada Rocks!
Chris from Pennsylvania USA
Yu “filled in the holes” for me in more ways than one by this lifesize sample - it just clicked and added practical education to the theory and diagrams I have been learning from! Thank you !
Dude, excellent video! Cool to see some real behind the scenes footage! Thanks!
Thanks for the trip down memory lane. I was in the National Guard 40 years ago, worked on CH 47 and UH1 helicopter engines. I blended and polished quite a few blades that suffered FOD. (Foreign object damage). Blades that could not be fixed were smashed with a hammer to prevent them from finding their way into our spare parts streams. Various use once parts From the aircraft were also given the hammer treatment. This would prevent the unscrupulous parts suppliers from performing unauthorized repairs to critical parts.I understand even now counterfeit parts can be a problem in the aviation industries.
This is one of the most informative videos I've seen in years. Thank you
Im a senior studying aerospace engineering and I've never had am understanding of turbine compressors like I do now. Amazing video man
Excellent video! Thanks for publishing and shareing, it's a good material to learn!
shareing
thank you SO MUCH!!! I'm learning something that I've been wanting to learn for quite a while! thank you, sir!!
I love your channel. The Canadian flair makes it that much better
Thanks for making all these detailed videos on turbine engines! I'm an engineering student and your videos are helping me a lot when studying turbomachines! You are a star!!!!
Thanks to videos like this I learn more from youtube than I ever did in school :)
I once asked my high school physic teacher long time ago if I cascade several fans together, would it produce higher pressure output but he did not know. Not a mechanical engineering major so that was not answered for a long time until the advent of RUclips.
As always, I recommend "the Jet Engine" by Rolls Royce, and "Aircraft Gas Turbine Powerplants" by Jeppeson. You will love them!
ABSOLUTELY FASCINATING! I've always wondered about the actual inner-workings of a jet engine, and it was a edifying experience. Thank you for sharing.
Just what I was looking for - thank you for taking the time to make this video!
Second video I've ever watched of yours, awesome channel!
Very interesting content, definitely will be checking out more videos
dear friend special thanks for best explaning am retired engieer from Iran i have been worked 17 yearswith j79 Engins pleasesay hello to all friends there
Hey Ramin :)
I polished blades and later did MPI, FPI and EC on the blades at a GE gas turbine machine shop. I got to tour the Greenville gas turbine factory but still learned some things about the product from this.
I used to work in a overhaul facility of turbonfan parts (blades, vanes, nozzles, rings and so on) and I NEVER heard such a good explanation of the working principles as in your channel. I envy you, AgentJayZ, working with those engines all day!!!
Thank you so much for post. It is very educational video
It’s amazing to see the jet engine never realized how many moving parts only on engine part, Excellent video
to add up on all the pilots in the comments thanking you for clarifying things about turbine engines, I would like to say from the bottom of my heart ... thank you this was an excellent educational video, sir :D
One of the most informative videos on turbine compressors out there. Thank you very much for the information.
A gum wrapper would not damage a turbofan at all. Nor one of these turbojets. But it would be turned to dust, not just shredded.
One of the major advantages of turbofans is they tend to shunt debris through the bypass duct..."bypassing" the core. Overall this makes the engine very resistant to damage by birds and such. A bag of marbles going into a GE90? it would be very unhappy, but it would keep running. If one marble went into the core of the same engine,it would be unable to make any power.
A bird got into the core of each engine in that incident. So each engine failed because the core ingested one bird, not a flock.
@ airguardian, that was a turbo fan engine, not a turbo jet engine. Theres a huge differance in power, and shape.
Dude, you are awesome. Thanks for educating, even in the comments.
Thank you for this nice video! :)
Fantastic video. I teach new Crew Chiefs in the Air Force about the F-16's engine (both Pratt and GE), and this video will help me describe the stators within the high pressure compression section much better.
This was the best video. Like others have said, so educational. Incredible. Thanks for sharing
I wonder if it's 7:47 long on purpose
Boing 747 :)
felicidades x este tipo de habilidades
Sproing 757 will be replacing all the Boings by 2018, I have it on good authority.
I put my alarms at 7:47 am and pm!!! ya ya Yay!!!
A_Person 286 Congratulations for ruining the joke
A mechanical marvel, as well as, a thing of beauty.
Hard to believe the turbojet engine was invented by a couple of aviators (Sir Frank Whittle for one) who thought reciprocating piston engines were too noisy and vibrated too much. They were looking for a smoother form of power generation. What an odd seed for the Mother of Invention. A bit like explaining why zippers replaced button flys.
Sir Frank was not looking for smoothness. He was looking for higher aircraft speeds.
propeller driven thrust is limited by the fact that the propeller tip cannot exceed mach 1 (for multiple reasons) so Frank worked on the centrifugal gas turbine in order to exceed mach 1 - the centrifugal compressor (think car turbo) was later replaced by the axial design which was vastly more efficient
@@andyman8630 Thx for the deeper insight. My comments were based on a television documentary, and as we all know, they are written by people who do some research, write a script, and find some footage to go along with it. So, as a viewer, you are at the mercy of the people doing the research, and what they decide put into it.
Your explanation, as well as, AgentJZ whose channel deserves tremendous respect, makes complete sense.
A Comprehensive explanation of Turbine's internals.!!!!.
thanks a ton for uploading this video. :)
I used to build the engine core for CF6 compressors. Learned real quick watch your fingers while installing the case halves. A slight turn on the rotor split my nail while setting up for a wax check. To check blade and stator clearances. After 35 years working on aircraft and thier engines I still have all my fingers!
My brother gave me one of those about the size of my thumb from his work as an engineer and it now serves as a brilliant addition to my keys lol. My brother had told me that its a part from a jet engine and i've been wanting to look up what its exact purpose is. My only question is how did youtube know that i was interested in learning about compressors and recommended me this💀💀
Great video, thanks for the info
I have been working on taming the resonances and using them to control flame propagation. Musically harmonised engines are possible... fourier theory and Rubens flame tubes... pulse jets... tuned mass dampers & compression cycles... materials with planned deformation & single crystal non-embrittlement techniques... turbulent flow in brass instruments and reed / woodwind instruments as designs for injectors... variable length / valve controlled manifolds... there are things we do with musical instruments which can and do puzzle physicists.
thanks for taking the time to do this, very educational!. Cheers!
Your video gives a 'hands on' view of a turbine engine and helps me visualize the many other fine videos by various producers, thank you, Jon
Jet People candidate: "what happens if one of these engine parts gets bumped or knocked over ?"
Jet Master: "You break, you fix..."
Jet People candidate: " Oh..."
AgentJayZ thanks for the videos...i enjoy them...
This may well be the very first "script style" comment on RUclips.
@@evanseventy7593 maybe
@@evanseventy7593 it belongs in a museum!
7:00 looks like the leading edge of a rotor blade tip, on our helicopters.. :) just on a smaller scale
Thank you for the compressor details!
What a great video, thanks for putting this out!
5:27 sounds like a music box
Mind completely blown. Who understood this process and designed the parts? The technical skill and accuracy is staggering.
The stators are not always stationary. They don’t spin but they can be moved at different angles. I believe this was a G.E. Invention called variable stators.
By stationary, I mean they do not move from where they are located... you know, like the rapidly moving rotor blades do...
The people who invented the variable stator also mean that. Otherwise they would have called it a moving stator... in which case it would not be a stator, now would it?
You Built That!! Yes you did! Love the Info you provide. Pay'n it back. You are to be commended.
Your channel is fascinating, I really appreciate you uploading these!
Ghorum ok troll haha
thank you. My propulsion proffesor should have put this video in class
More useful video than most “understand the jet engine” videos 🤟🏻😃
Great video, really brings all the diagrams into perspective. Thanks for posting.
I'm supposed to do an inspection of compressors for class. This really helps!
It sounds like it would make an interesting wind chime if you could make it work.
take a bunch of the blades on the compressor wheel out in varying sizes drill holes hang them from a ring, and in the center could be the shaft cone to ring them in the wind.
wind chimes are the worst
ruclips.net/video/4wKPTWXD2Z0/видео.html
Any wearing in of seal clearances would be done on the test cell stand... long before the engine ever got near being installed in an aircraft. Aircraft engines are built with standardized, slightly larger tip clearances to avoid rubs. Industrial engines have a less demanding life, but longer service intervals, and they are sometimes built "tighter".
Wal-Mart has a nice suit for 12 slim
Hey Brad Pitt
AgentJayZ I like each and every video you do there very interesting and fun to watch I wish I can be there when you test run one of those jet engines just to hear the sound they make it would be awesome
I stumbled on this video and I'm usually very scared to fly. This made me feel much less scared to fly. I would never have known just how detailed inspectors must be. Thank you for educating me! Very interesting! I'll have a new appreciation next time I'm flying and hear the engines roar up.
I bet it would make a "terrible" sound if I were to drop a bolt down it.... If you know what I mean
Not for long : )
You mean "that terrible sound you never want to hear when working on turbine engines"?
That video was made with a compressor of this exact same model.
Hey youtube algo will bring you there loll
Dropping a spanner in the works is bad enough. This is a while new level
This is the shit that plays Down Under when you drop a screw into a turbine, right?
Cat vids are only a click away...
@@AgentJayZ lol
You literally touched my PhD with your finger :D, your channel is amazing! Please keep all up!
thats actually amazing how well and percisely they are made
Wow amazing to see so many stages of compression. I work on TFEs with 4 stages of compression but to see all those rotors and stators is pretty fasinating. Ive dropped a bolt down the LPC group down to the HP module and was able to turn the engine over in the build stand and it fell right out. I can't imagine you could do the same with this big beast. It would sound cool though I bet!
Have you seen my most popular video, called Dropped into a Turbine Engine?
Every American has a big block v8 in their garage
Every Canadian has a big jet turbine engine in theirs
Super cool video. I am currently studying for my AMT cert. this was very educational. Thank you
Wonderful pieces, not just for engineering, state of art, and literally the art itself.
That compressor rotor would make the coolest furniture centerpiece ever if you could find one that was faulty and could be pulled out of a scrap heap.
However, one must be careful not to fall into one of the rotor cases, or you will face a slow and terrible death, as you are slowly digested over a period of 1000 years.
+Ryan Cook We've got one in the scrap bin right now. Come and get it. It weighs about 500lbs.
+AgentJayZ I wonder if this was a serious offer
I feel like it probably was. Unfortunately, it's about a 45 hour drive from me and I don't have a truck.
+Ryan Cook I have a few compressor stages laying around if you want to pick one up in Norway..... Sorry, just wanted to add to the good offers!
But I do actually have a few. I should really make them into some kind of furniture.
ALSO MAKE A GREAT WIND TURBINE.
Wow I’m dumb! Can you imagine how smart the guys who invented this shit were?
You're not dumb. If you can imagine how much work it takes to design a jet engine... you are a lot smarter than the people who've told me it's easy.
Thank you for this closer look
Incredible video! Really educational and nicely shows everything in detail! Keep on making great content like this.
AgentJayZ: At 3:23 is the "money shot" to a question I've often pondered. Given how tight the space tolerances are inside the engine, what is the process for attaching the compressor casing to the rotor assembly such that you don't prang a delicate stator or compressor blade? You've previously said "with great care". This process must be even more critical in high pressure, high by-pass commercial airline engines. I presume that the preferred process is not what is shown in the youtube video "gas turbine accident". Would it possible to show the joining process of a compressor casing -rotor assembly by video? Many thanks!
we used to put wax strips to ck clearance. then airline bought very expensive grinder that match ground each rotor to a specific set of cases.tremendously accurate the blades had a 3 angle grind on them (tip) also. mind blowing when you hear some yahoo customer screaming complaints.
Can only answer for a high by pass turbo engine (leap/genx/cf34) low pressure compressor
Stage by stage "that simple"
disk fan -> spool -> matching of blades (because like he said blades must be loose, so in order to that, tey test wich blades they will put , then unload them for proper mounting) -> unload the blades -> first stator -> first stage (seconde stage actually cause first is fan ) blades put back -> second stator -> second stage etc
why loose blades
Ric Rovey Not resonance.
I wonder what is the temperature those stators reach when working.
From inlet to outlet, each stage gets hotter. From idle to max, the temp of each stage gets hotter.
@@AgentJayZ Are all of them made of titanium or some of them (the colder ones) are made of cheaper materials like steel?
And thanks for answering :)
All steel. Steel is stronger, more resistant to high temps, cheaper and easier to work with than titanium. But titanium is lighter, and of course, sexier than steel.
@@AgentJayZ Hey Jay. Thx for answering.
SInce we are at it, I got another question.
I always thought i the blades and vanes where made of titanium precisely because titanium can endure higher temperatures and dont suffer frmo creep as much as steel.
But the question is: if this is all made of common, easily acessible steel instead of some exotic metals, why dont other countries produces engines like these?
I mean, its kinf of difficult to believe that such a simple desing using steel is so expensive and difficult to make.
Ah! You made the very common, but massive mistake!
"Simple"?
Have you ever thought about why the steam piston engine was introduced in the late 1700s, and the steam turbine was introduced in the late 1800s?
Or how the Otto cycle piston combustion engine was around just before 1900, but the first combustion gas turbine engine was actually running in the early 1930s?
Not so simple.
And to make a "competitive" gas turbine engine nowadays, or even in the 1960s... took thousands of engineers and billions of dollars. With a capital "B".
Anyone who says jet engines are simple, and have "only one moving part"... just does not know enough.
Jeez, most countries in the world today do not have a "steel" industry.
It takes a heck of a lot of money, skill, and will to develop a jet engine. Only a few countries do it now.
Even here in Canada... we sure can, and we did back in the day, but we don't now.
We design nuclear reactors, but we don't make jet engines any more.
Simple is the last word I would use to describe gas turbine engines.... except maybe cheap.
Yes, cheap and simple are the top two non-words to use...
Excellent video. Brings up so many questions.
Thank you AgentJayZ! I spend just minutes viewing your info-packed and BEAUTIFULLY EXPLAINED videos and it saves me hours of reading through boring (by comparison) encyclopedias (including the eyestrain of poring over the small - & misleading - diagrams therein), in my quest to educate myself about jet turbine engines. Yours truly, AgentLayz.
I want to learn and work in that field, can you help me pls?
ruclips.net/video/C8J8roji0xo/видео.html
how does someone get involved in repairing engines like this, i would like a career doing it.
I've made a couple vids on that.
One is called "So you want to work on jets", and another is called "another way to get there"
@@AgentJayZ ok thank you for the reply and videos. i appreciate it. very good content here.
Find a local Part 147 school to attend, and be prepared to spend a few years studying and gaining eligibility to take the A&P exams. You’ll need an A&P license to go far in the industry. I’d say start there
As always fascinating ! thank you for posting .
I appreciate the video. You don’t get to see things like this too often! 🎉
Jay: you don't want to hear this sound
Me: Why
Jay: having to take apart the turbine
Me: right, time to do more searching
Also me: uh...
I see plenty of room for a gum wrapper. ;)
Oh dear
That's beautiful engineering - thanks for the insight!
Thanks for sharing! Very interesting to see these things 👌
Who builds custom compressor spools?
As far as I know, there is no such thing. The only thing we customize is the paint job.
@@AgentJayZ Thanks! another question: If I want to design around standard off the shelf rotors and stators, is there and existing catalog?
I don't know what you mean. The only generic and universal parts used when designing a jet engine are the nuts and bolts.
So, I'm going to go with No for my answer to this one.
Have a look at my vid: So You Want to Design a Jet Engine... it's here: ruclips.net/video/jxyyG-pTiMI/видео.html
As an engineering girl, I find the gas turbines soooooooooooooooo much more attractive than any of the guys I've met, every time I see a gas turbine I want to screeeeeeeeeeeeeeem. The power of masculinity.
Ok
OK
Why don't you marry one
OK
I can't resist post "love your highly educational info in layman's terms. Very down to earth. Thank you 😊❤️
Thank you for making this video. Highly educational.
What happened to the guys comment that said the SR71 has counter rotation blades?
I called someone I know, who knows first hand about the SR71. He wouldn't confirm or deny the counter rotation.
He also asked, how did I know this.
I told him, I read it here.
Do you mean that the staters in the casing were rotating in the opposing rotation as the compressor rotor?
If they are moving, they are not stators. If there are counter rotating airfoil elements in the J58, I know nothing of it, and have never heard or claimed such a thing.
PS: The SR-71 is an airframe, which was fitted with the J58 engine.
In this biz, details are extremely important.
the pegasus engine in the harrier jump jet had counter rotating spools, so that it didn't get a big torque reaction at low speeds
I think that might be more about weight savings. The net torque on the engine mounts of a jet engine are negligible, for reasons explained in videos in the playlist Your Questions Answered.
Sailing Dreamer they run planes by COMPRESSED AIR not flammable liquid. This is bullshit.
I'm a septuagenarian retired military (all the way back to Vietnam) pilot and quite enjoyed your video! Well done and thanks for the info.
You are the real deal. You used these things for their intended purpose, at the bleeding edge of new and now (then). I can only imagine. Welcome to Jet City.
Tell us some stories, Uncle Joe!
cool video!! I'm currently taking my commercial pilot license, and this video really helps clearing out my doubts about turbine engine
I never had such a clear briefing before. Great content!
Old F100-100/200/220/229 mechanic here - thanks for the memories!
Your videos are fantastic! I really enjoy learning about these engines. Thanks!
Great educational videos! I really have a much better appreciation for how these engines work. Thanks!
I share your fascination with these machines. Great job with the videos. Almost single handedly, you've explained the intricacies of turbo machinery to the world of RUclips.
Thanks for sharing this, very informative 😀