J79 - Turbine Engines: A Closer Look

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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!

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4 сен 2010

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Комментарии : 872

@itissrinivasan Год назад

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

@AgentJayZ Год назад

I suggest you start with my playlist Your Questions Answered. There's a hundred vids there...

@jaktheapprentice1023 5 месяцев назад

I am an A&P prospect and watching all videos from beginning. Working at a turbine shop would be awesome.

@johnharris7353 5 лет назад

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!

@MrGyngve 5 лет назад

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.

@MrEstebanSzucs 4 года назад

I will love to have a dad like this some day

@carlossantiago8321 3 года назад

That is awesome on another level.

@jacknickolstine3355 3 года назад

That would have been awesome

@poppedcollards 3 года назад

@@MrEstebanSzucs are you unborn?

@4rct1c9Ic3m4n 4 года назад

Hot Musician: What kind of instrument do you play? Cool Musician: a J79

@Marauder1981 4 года назад

That´s Einstürzende Neubauten. They actually play on turbine parts

@luarbiasawaras8700 4 года назад

This is a 9 years old video, still teaching us valuable leasons, thank you Sir

@AgentJayZ 11 лет назад

Thanks for that... I'll keep makin' 'em as long as you keep watchin' 'em!

@wingsofmind 4 года назад

In which aircraft model it was equipped with????

@jshanker2005 5 лет назад

He got distracted a little and started playing music in the middle.

@doctorTF_2 3 года назад

who wouldn't?

@RayRay-wn5vh 4 года назад

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.

@AgentJayZ 12 лет назад

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 !

@mccc4559 5 лет назад

OMG THIS WAS SO COOL TO WATCH!!!! I CAN'T THANK YOU ENOUGH. I REALLY APPRECIATE YOUR KINDENSS IN SHARING.

@tomp7141 2 года назад

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.

@zackthebongripper7274 4 года назад

"What instrument do you play?" The J79.

@michaelamos8271 6 лет назад

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 .

@AgentJayZ 11 лет назад

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.

@69adrummer 11 лет назад

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!

@user-ne8rq9hm3z Год назад

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.

@pyromidengineRD 10 лет назад

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.

@jerrybrownlee1753 9 лет назад

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

@ajaykumar-fz7uj 9 лет назад

Sir can u tell me the dimensions of J-79 nozzle?.....plz..........

@jerrybrownlee1753 9 лет назад

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

@kevyelyod1211 6 лет назад

Jerry Brownlee great info! What is the reason for keeping the EGT within a fixed range?

@homefront3162 6 лет назад

Jerry Brownlee Dad was an F-4 Pilot in Nam and after in VX-5 China Lake..... love the F-4

@godofplumbing 6 лет назад

Thanks for your service. A and P mechanics are the unsung heros

@stanleyallan6997 4 года назад

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!

@FD1CE 2 года назад

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.

@Take_my_Knowledge 3 месяца назад

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 ❤

@ParanoidBurritos 6 лет назад

"Once it's lit, it stays lit" just like me on the weekends.

@rickbrown7059 6 лет назад

Jet engine mechanic, F4G Wild Weasels. 84-88. Loved every minute!

@thomthumbe 5 лет назад

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!

@AgentJayZ 11 лет назад

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.

@Slikibastic 11 лет назад

The engineering that goes into something like this is just amazing... Great video fella

@B5Lyfer 5 лет назад

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.

@robertglenn5398 9 лет назад

Very instructive. Thanks for the tour...

@sarahyarwood4612 7 лет назад

Very informative, music to the ears even when it doesn't run.

@thomasodetinape4180 3 года назад

One fine engine, many hours, blood and tears handling that monster. Loved it.

@sentien13 3 года назад

I've watched so many videos on how jet engines 'work' but never quite got it into my head, this video solved that! Thanks!

@nestea322 9 лет назад

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.

@thcoura 8 лет назад

What a work of art!

@cdstoc 5 лет назад

I've seen so many of these in museums, but never had such a good guided tour. Thanks!

@Ihavetruth22 10 лет назад

This is one of the best videos on turbines i have ever seen. Great job!

@Blaze0357 11 лет назад

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!

@kenjohnson6603 6 лет назад

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

@jerrybrownlee1753 5 лет назад

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

@lesyastepanchuk8922 3 года назад

This guy knows how to teach, he knows how the mind works because his does

@mii3000 13 лет назад

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.

@larrycrawford7240 5 лет назад

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.

@doctim111 6 лет назад

What a great overview, glad I watched again after a few years

@dadbrad852 11 лет назад

Very well done! I love your delivery! It's very efficient communication with just the right amount of simplification. Very simplified, but not patronizing. I am very happy to subscribe and glad I found this. Keep doing what you are doing.

@nicholasbnasraj8045 9 лет назад

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! :)

@ShannonSmith4u2 5 лет назад

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

@majr72 7 лет назад

Damn worked on -17's out of wild weasels brings back memories. These engines are tough as hell had one come in to our shop at Edwards with half the blades gone on every stage to the turbine was still running great. These engines are a safety wiring dream it will definitely make you a safety wiring pro

@user-yv3dx7os9q 5 лет назад

This is defently the best video i've ever watch to jet engine and its useful to learners .Thank you so much

@chrislyon7147 Год назад

An excellent presentation. Works well as a general introduction and provides real insight.

@gpolaski 11 лет назад

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!

@jhiggz9258 7 лет назад

Another great video. So glad you get rught down to the pieces and parts, and what each does.

@katelikesrectangles 10 лет назад

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.

@AgentJayZ 13 лет назад

@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.

@astircalix4126 8 лет назад

very nice tour around the engine. I will use it with my would-be pilots. Thanks! !

@03221955 6 месяцев назад

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.

@drewthompson7457 4 года назад

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.

@AgentJayZ 4 года назад

Um... there was that third one. Too bad we blew that opportunity.

@drewthompson7457 4 года назад

@@AgentJayZ : Well, I did mean the Orenda and the Iroquois. P&W Canada did good work too.

@alexy1085 4 года назад

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.

@JeffGR4 11 лет назад

I'm astonished over the the beautiful sounds you get from plucking the compressor blades...literally "music to the ears."

@coquihalla1 7 лет назад

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.

@hmidasliman6504 4 года назад

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.

@htcooley04 4 года назад

That's just a whole bunch of cool right there

@SuperStevegrant 7 лет назад

Sitting in The Cotswolds in England.. I am addicted to these videos. Don't know why, but I am.........

@pshravankumar3162 6 лет назад

That's fantastic overview....please keep doing this type of videos they are very informative....

@dwightpilkilton7870 6 лет назад

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

@MuhammadTayyab-iv4rd 6 лет назад

Very nicely explained....thank you sir....🙏👏🏽👍

@Hopeless_and_Forlorn Год назад

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.

@volador2828 5 лет назад

Worked on the j79... It's a beast!

@marysondasilvaaraujo5077 7 лет назад

Thanks a lot! I use yours videos for my lessons because a don't have a real gas turbine. Thanks for all!

@corymcdonald3703 5 лет назад

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!!!

@AgentJayZ 5 лет назад

Thanks, and thanks.

@tonyv8925 6 лет назад

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

@THEBASIL1946 6 лет назад

I work on F 4B & J for 9 years in the Marines

@durairajaraman7144 5 лет назад

Thanks for your fantastic and simple explanation about working principle of jet engine with sectional view.

@scroadload 5 лет назад

Thanks for a very understandable explanation of how a jet engine works. Thanks John

@scroadload 5 лет назад

@Nature Restored LIVE huh??? Dumbest question ever!

@iblesbosuok 5 лет назад

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

@Daluke61 12 лет назад

For me, this video in particular, along with your descriptions, has proven to be the most informative with respect to turbojet engine function and design. It's filled in many of the blanks (or questions) I'd had about how these gems operate, having not been exposed to the guts, up close. Still trying to wrap my head around the whole diffuser (confuser?) deal but that makes this learning adventure that much more fun! Something else I learned recently; read the comments... might learn something

@AgentJayZ 11 лет назад

Thanks. It's always nice to hear something complimentary.

@Waschi111 8 лет назад

A very good tour! Nice and understandable explained even for a German like me :-)

@leso204 4 года назад

being a maintenace engineer/mechanic allways interested in new areas of tech' very simple and concise explanation , will check out your other vid's .............

@basheerkadhim3707 4 года назад

What a wonderful tour!

@pietrogazzera5733 5 лет назад

Beautiful tour on a mythic engine! Thank you!

@rubenomarbueno1134 Год назад

El J-79 , consumía mucho combustible y producía mucho humo. Siendo detectable al radar y también en forma visual.

@DrBPhD 13 лет назад

Nice video. Explaines the J79 very clearly. Thanks for recording and uploading.

@chippyjohn1 9 лет назад

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

@freddiepenrose4235 4 года назад

Well, that was very informative, it even made sense to me who has no jet experience, lol, well done and thanks.

@tyymclarenfan 6 лет назад

Absolutely amazing details, as i love anything technical 👍🔧🔩

@davidfriesen7748 5 лет назад

Nice , I now know a lot more about them dam things now . Always wondered about that.

@jimweeks9359 3 года назад

Thank you very much for the tour.

@roopeshkrishna34 4 года назад

Million thanks for sharing the great video of J 79 engine..

@easchit 11 лет назад

Wow, this is one of the best "how it works" videos I've seen on turbine engines.

@Nyck461 11 лет назад

Very detailed and instructive video. This guy really knows what he is talking about. Congrats for your video.

@deeclination 5 лет назад

I’ll never forget night launches of F-4 Es at the end of the runway , former 46250 TAB Spain 1970

@AgentJayZ 14 лет назад

@cheetawolf The compressor is designed to operate efficiently at maximum power and engine RPM. Without the variable inlet guide vanes and variable stators, it would not be able to get up to that speed from idle. The variable vanes direct the airflow towards their stages at the appropriate angle for the rotor rpm, airflow velocity, and the rotor blade angle of attack. For a more detailed answer, read "the jet engine" by Rolls Royce", an excellent introductory text.

@nobodycares85 12 лет назад

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.

@mckoylach1622 6 лет назад

Amazing designs,inventions and functions so efficiently.

@marioshadjikyriacou3381 4 года назад

Legendary J79! Drinks a lot, used to smoke a lot, but tough and reliable!

@andreiaudio 5 лет назад

Thank you for this amazing clip! Best regards

@macanix8072 9 лет назад

Excellent video... explains a lot of things that I never really understood about jet engines.

@BackFlash2K 10 лет назад

Cool cutaway. Thanks for sharing!

@petezauw1921 8 лет назад

Fabulous video! I have learned alot from this. Thanks for the tutorial

@zero00tolerance 12 лет назад

Thankyou for sharing it with us !! This video was very informative, i learned a lot

@marcemarce9821 2 года назад

You were playing music with it, while I am very amazed, so awesome to, & thank you very much for showing

@shyleshsrinivasan5092 4 года назад

Really grateful for this video !

@BJCulpepper 6 лет назад

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..