J79 - Turbine Engines: A Closer Look
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- Опубліковано 15 жов 2024
- A guided tour of the J79 turbojet engine, from intake to afterburner. This is the cutaway display we have in front of our shop at S&S Turbine Services, where we overhaul and repair industrial gas turbine engines for customers all over the world.
If you liked this video, check out my channel page and type J79 into the search bar to see test run videos featuring afterburners.
To help support the channel, check out Patreon for AgentJayZ.
Thanks! - Авто та транспорт
As an aviation geek, I saw this video in 2023 and think I lost 10 fantstic years… what a video ! Only knowledge, no BS and such passion
I suggest you start with my playlist Your Questions Answered. There's a hundred vids there...
I am an A&P prospect and watching all videos from beginning. Working at a turbine shop would be awesome.
You're a great guy to share your knowledge. Dad was a F4 test pilot for McDonnell Douglas. He'd bring that thing screaming back over the farm and break the sound barrier on purpose.it took him an hour to drive to work and five minutes to get from there to over the farm in the F4. You could do that back in the early sixties. I was just a boy I thought he was a God!
LOL! Not everyone can brag about how their dad used to break the sound barrier on purpose over their house:-). Yup, those were different times. Cant do that anymore, but oh well.
I will love to have a dad like this some day
That is awesome on another level.
That would have been awesome
@@MrEstebanSzucs are you unborn?
Hot Musician: What kind of instrument do you play?
Cool Musician: a J79
That´s Einstürzende Neubauten. They actually play on turbine parts
Thanks for that... I'll keep makin' 'em as long as you keep watchin' 'em!
In which aircraft model it was equipped with????
This is a 9 years old video, still teaching us valuable leasons, thank you Sir
My Dad was one of the engineers who designed the J-79 along with Gerhard Neuman and others. The perforations in the combustors were not just for cooling but also to add extra air to make combustion more complete and reduce smoke.
OMG THIS WAS SO COOL TO WATCH!!!! I CAN'T THANK YOU ENOUGH. I REALLY APPRECIATE YOUR KINDENSS IN SHARING.
Thanks for the feedback. I'm hoping to take my channel from a collection of simple exhibitions of things to an actual useful learning resource.
It's a big step, and it's going to take a lot of work.
Just today, a few hours ago, I tried to make an instructional video explaining compressor theory (including diffusion), but I needed to understand the subject matter better in order to explain it with clarity.
... Working on it, and I hope to complete it soon !
Late to the video but really like it. I was a 6024 J79 Jet engine mech. '68 - '77. You sure brought back a lot of fond memories. Thanks
Check out some of the J79 test runs with afterburner. Always good to hear from people who were there.
"What instrument do you play?" The J79.
The first stage turbine is probably the hardest working part of this amazing machine. Your explanation is on point for anyone.
Thanks forgot doing this video.
This incredible machine made this world a small place.
Now let's live in peace.
Hello Ray. Can you explain why the First stage is the hardest working part? I work for an MRO for the J85 and see many 1st and 2nd stage that we work on.
He got distracted a little and started playing music in the middle.
who wouldn't?
This is a terrific video. I have, for a long time, understood the basic operation of a jet turbine engine. To see it up close and explained was informative and very enjoyable.
Thanks!
I was an AGE mechanic and we supported F4 Phantoms , I really loved the F4 & it's J79 engine , thank you for this great tutorial .
I was a J-79 Mechanic on the F-4 Phantom II way back in 1966-1970 era. Spent about half my time in the shop, and the other half working flight line maintenance. Every service did things a little differently. Out engine starter was on the rear side of the accessory gear box. We had a CSD and Generator on the very front of the engine at the inlet...........the pad you indicated was incomplete. It was encased in a stainless cowl. Many a time I crawled up the inlet to change this unit. The country was already HOT and then you add the engine heat.........well you get the idea. After while you are slipping and sliding in your own sweat. Needless to say, I was THINNER back then. JB
Sir can u tell me the dimensions of J-79 nozzle?.....plz..........
ajay kumar That question would be hard to answer as the exhaust nozzle was variable....in that the nozzle changed as throttle position changed. The engine temperature (commonly know as EGT) was monitored by the Temperature Amplifier and it sent signals to change the exhaust nozzle to keep the EGT regulated. At idle the nozzle was full open, and as power was increased to max. (military) power the nozzle closed. It would be fully closed at max. power. When A.B. was selected, the nozzle would open back up to full to allow maximum thrust. If you watched the nozzle closely during all power ranges it was always in a state of "flux" because it was being used to keep the correct EGT. Hope this helps. Jerry
Jerry Brownlee great info! What is the reason for keeping the EGT within a fixed range?
Jerry Brownlee Dad was an F-4 Pilot in Nam and after in VX-5 China Lake..... love the F-4
Thanks for your service. A and P mechanics are the unsung heros
Thank you Gentlemen! It's nearly impossible to find this kind of knowledge by Indian youtubers for us. That's why I am watching u. Thanks a lot for videos, love from India ❤
I have the utmost respect for people that make this their art and their life and their career! While it's pretty easy to understand, I know there is so much going on here! This video helped a lot!
It's hard to understand why that shape and its material,I still don't know why this J79 engine will blow out much black smoke when it's working?It's pretty bad when flying and fighting.
Thanks. you have a lot more experience with this engine than I do! I have not tested a modern fighter engine, so I can't really compare, but I just love these old beasts !
Your approval means a lot.
A "jet engine" is a gas generator with an exhaust-acceleration nozzle attached to the back of it.
A helicopter engine is a gas generator with a free-power turbine attached to the back of it, which feeds its torque into a gearbox to drive the rotors.
Apart from size differences, they are the same type of gas generator. Smaller ones may use centrifugal compressors vs axial, but they are the same thing in terms of design.
What a fantastic tour. It meant a lot to me as my grandpa was a Jet engnes expert working specifically on J-85s and J-79s in the former IIAF.
Coins a new meaning for "engines are music to my ears". This is a great educational video. You can use this for presentation material at any tech school. I think students would enjoy this more than those silly sales "training" videos.
r1cw is 100% correct, and I endorse his answer completely.
One fine engine, many hours, blood and tears handling that monster.
Loved it.
The engineering that goes into something like this is just amazing... Great video fella
I've watched so many videos on how jet engines 'work' but never quite got it into my head, this video solved that! Thanks!
An excellent presentation. Works well as a general introduction and provides real insight.
At work we had a cut away Orenda. I spent hours staring at it, trying to understand it's workings. It got shipped to another university. There was a P&W PT 6 cut away too. Something I found interesting was that Canada never developed an aircraft piston engine, but designed and built 2 of the best jet engines of their time.
Um... there was that third one. Too bad we blew that opportunity.
@@AgentJayZ : Well, I did mean the Orenda and the Iroquois. P&W Canada did good work too.
Great video, thanks!
As an old Phantom Phixer, I did a lot of structural repair on these, not as an engine mech, but 6042 sheet metal. Combustion cans all of the time. Titanium rivets to put them back together. Turkey feathers, and forward blades as NDI. I miss them, and I don't miss them.
I've seen so many of these in museums, but never had such a good guided tour. Thanks!
Legendary J79! Drinks a lot, used to smoke a lot, but tough and reliable!
Sitting in The Cotswolds in England.. I am addicted to these videos. Don't know why, but I am.........
The J79 was hot stuff when I joined the Air Force in 1960. These days it looks as crude as its early 1950s origin would suggest. Engines have come a long way.
being a maintenace engineer/mechanic allways interested in new areas of tech' very simple and concise explanation , will check out your other vid's .............
This channel is amazing!
Yesterday, I knew absolutely nothing about the mechanics of jet engines.
As of 7:15 a.m. today, I’m pretty much an expert lol!
Very cool stuff! Thank you for sharing your knowledge.
At the Ontario, California Engine Shop, we overhauled J-79 engines for the Air Force in the early 60's to the late 70's man there were alot of engines we overhauled. A great place to work.
Thanks so much for sharing and this vid and ur explanation are so helpful for students who want to see the actual jet engine in detail.
You were playing music with it, while I am very amazed, so awesome to, & thank you very much for showing
Old post but, I worked on J79 engines in 1983. No CSD mounted on that one. Also worked on J52s'. Thunderous beasts they were. the old suck squeeze bang blow. Nothing like a good compressor stall at 80 %,,,BOOOOOM
Jet engine mechanic, F4G Wild Weasels. 84-88. Loved every minute!
I was at Clark 86 to 89. A friend of mine was a wild weasel pilot. Loved watching the guys practice up at the range near Camp O’Donnell. Good times!
I'm astonished over the the beautiful sounds you get from plucking the compressor blades...literally "music to the ears."
Fantastic Video, Thank you. I'm 45yrs. old and have had the jet turbine engine explained to me in many ways. Now finally (Thanks to your video) I 'fully' understand how they work. Very cool!
I used to be a J-79 engine mechanic back in the early 60's on the B-58 Hustler. 10,500 pounds of thrust @7460 RPM
Ken, I worked with a fellow at Federal Express who worked on B-58's in the Air Force. His name was John Mullen........and at one time he was at Little Rock AFB.........most likely in the mid to late 60's. We also had a Captain that I am close to that flew for FEDEX and he was a "Hustler" pilot. His name was "Buck" Carroll. Buck was a very interesting character and still alive. I think he is fast approaching the 90 mark. The B-58 was way ahead of its time. Beautiful airplane though. My understanding it was a "bear" to work on. Everything was secured with high stress fasteners and even getting into any compartment was work. JB
@justforever96 The turbine nozzles are located upstream of their respective turbine stage, while a compressor stator is located downstream of its respective stage, otherwise the two components are similar.
Stators decelerate air coming off a compresor stage, raising its pressure, and direct it at the next.
Turbine nozzles accelerate exhaust gases, lowering their pressure, and direct them towards turbine.
Thank very much sir, for the tour of this super jet engine, that engine set up really the standards of jet engine long time ago.
Incredible, so 4 of these bad boys hauled the B58 to Mach 2 +. I loved the visual of the compressor blades getting smaller and smaller as the compression when higher. Thanks
Wow, I remember these when I was in the Air Force, along with J-69's and J-85's 42350--F4E's, C-141's, T-38's and T-37's
FYI, I subscribed because of your short to the point explanation and telling me you had other videos to show what you were explaining. Great job!!!
Thanks, and thanks.
Wow,it was posted 9 yrs ago.Thank you for the information sir.
Absolutely awesome. Thanks for posting this great video 😎
Wow thanks for the video AgentJayZ! You clarified a few questions I had about the turbine stage, I honestly thought it was like straight through with no segments for the direction of gas flow! Thanks again! :)
Thanks for demonstrating that! I've always wondered how these compressors actually work. It's nice to get an explanation from someone who obviously has a keen understanding of turbojet.
You definitely don't want to hear music from those blades while airborne. Very nice cutaway on the J79. Thanks for sharing.
Another great video. So glad you get rught down to the pieces and parts, and what each does.
This guy knows how to teach, he knows how the mind works because his does
Thanks for a very understandable explanation of how a jet engine works. Thanks John
@Nature Restored LIVE huh??? Dumbest question ever!
"Once it's lit, it stays lit"
just like me on the weekends.
Thanks. It's always nice to hear something complimentary.
Thanks a lot! I use yours videos for my lessons because a don't have a real gas turbine. Thanks for all!
I’ll never forget night launches of F-4 Es at the end of the runway , former 46250 TAB Spain 1970
Excellent video. Now I can imagine how much thrust from this sweet monster. All based on kerosene as fuel, as hydrolics, as lubricant and as coolant.
Cheers from Indonesia
Great video!
Worked on the GE J-79-10 used in the F4 -J Phantom from 1973-75 aboard USS Independence CV-62. We ran a lot of these on the test cell during two Mediterranian cruises. I kept several technical books on the -10. I've never forgotten the sound as these were turning up. It cost me some hearing loss but what the heck. Like having a battle scar; I'd never complain. An unequalled experience.
very nice tour around the engine. I will use it with my would-be pilots. Thanks!
!
Very informative, music to the ears even when it doesn't run.
Interesting videos, JayZ. You brought back a lot of fond memories with your J-79 instructions. I have been maintaining and overhauling jet engines for 42 years...I am retired Air Force and also work in commercial aviation at a jet engine overhaul facility located in the Miami area of South Florida. I cut my teeth on J-79s in Okinawa and Korea in the early 1970s, and later taught J-79 QEC buldup and teardown as an instructor at Chanute Airplane Farm in the late 1970s. Nice job!
I love how you end with "now you're an expert ...". That's a lovely tounge-in-cheek hint at how much experience you actually have.
Thanks for your fantastic and simple explanation about working principle of jet engine with sectional view.
Very nice explanation; we had one of these, non-afterburner model, in our test stand at A&P school. It seems thousands of these are available.
with all your knowledge on these engines im surprised you havn't made a model or something, a small engine that could fit in a car or something. really enjoyed watching, love to learn new things and turbines are at the top of the list at the moment. keep up the great videos
Nice , I now know a lot more about them dam things now . Always wondered about that.
Wow. I haven't watched any of your videos for a while. I was very addicted for a long time, but fortunately my family had an intervention for me. Lol. These are always awesome, fabulous and informative, thank you
Great informative video thanks
What a great overview, glad I watched again after a few years
Very good job sir without making it too geeky. The musical blades was a pretty cool distraction. Shows you can stop and enjoy the abstracts of life... Cool video..
Very instructive. Thanks for the tour...
Only spent 20 years relying on this engine. Never let me down.
That's fantastic overview....please keep doing this type of videos they are very informative....
Excellent video... explains a lot of things that I never really understood about jet engines.
Beautiful tour on a mythic engine! Thank you!
El J-79 , consumía mucho combustible y producía mucho humo.
Siendo detectable al radar y también en forma visual.
Wow, this is one of the best "how it works" videos I've seen on turbine engines.
I know that engine by heart. I work on them for 5 years back in the mid-late 60's -8 and -10 models
Simply amazing... Believe it or not, the IGV's are very similar to many IGV assemblies on centrifugal refrigeration compressors. The old Westinghouse/Mcquay centrifugals had IGVs and rear diffusers (variable outlet) that worked in sync with the IGV assemblies. to assist in the variable capacity capability of the 'pump', if you may. Tolerances were critical. Thanks for the video.. I always loved the J79's in my favorite plane, the F104.
This is one of the best videos on turbines i have ever seen. Great job!
What a beautiful piece of musical instrument, a very big music box :-)
+zapfanzapfan,
What instrument do you play?
"The J-79"
Somehow the comments went from a J79 (GE) to the R&R RB211, but to make even clearer to Mr. Bradley below, the RB211 is what's called three-spool engine, and as AgentJayZ stated, each spool has it own compressor as well as their own turbine, but no "three piece shaft" as you stated and corrected by AgentJayZ. Great video, guys. I'm well up to speed on this technology, but still amazed how well you explain things in just plain English, and not just this video but others. Thanks.
That's just a whole bunch of cool right there
A very good tour! Nice and understandable explained even for a German like me :-)
Worked on the j79... It's a beast!
THANKS A LOT FOR DETAILS, ITS HELP TO UNDERSTAND HOW JET ENGINE WORKS, ITS SIMPLE BUT DEEP TECHNEC,
Thanks, Always loved ANYTHING about aircraft but I never dreamed that internal parts of a jet engine could be musical.
Man this video is amazing. I am a jet engine enthusiast. I love how simply complex they are and this video helped me better understand a lot about turbines.
It's hard to imagine where people came up with these ideas to make something that is so amazing and unconventional compared to what was around before the Jet Engine. Thanks for sharing this information, I enjoyed learning more about the way these things work.
Very detailed and instructive video.
This guy really knows what he is talking about.
Congrats for your video.
Amazing designs,inventions and functions so efficiently.
Thanx alot :) Yesterday I found an J79 and an T58 here in a museum in Norway.
On this J79 it was alot of pipes going from those flanges on the midtframe and back to afterburner. Probably for an F104 Starfighter.
I do NDT fpi inspection recognize a lot of the parts. Interesting to see where they go. I did learn a lot from your videoes, thanks. Front frames mid frames rear frames compressor cases etc. etc.
What a wonderful tour!
Well, that was very informative, it even made sense to me who has no jet experience, lol, well done and thanks.
Very cool video. Thanks for posting!