A J79 for a Fighter Jet... with Reheat.
ฝัง
- เผยแพร่เมื่อ 12 เม.ย. 2019
- A sort of comparison between our J47 turbojet engine, and its bigger sibling, the J79 turbojet.
Both are legendary engines with long and successful service records.
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Thanks! - ยานยนต์และพาหนะ
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Normal person: Whats it like standing next to a jet engine? Engine Mechanic: It's air shattering, thunderous, violence. Like being viciously punched to death. Normal person: Oh my god that sounds awful. Engine Mechanic: (While giggling internally) It's freakin awesome.
I worked on the J79 in F4s. You are right that nothing can describe what it feels like with 2 engines running all 17 stages of afterburner when you are doing engine trims. Your heart won't even beat right.
The only reference I personally have is being fairly close to a 13-14000 lb high bypass fan during mx runs and we're still probably looking at orders of magnitude of a difference in noise I really appreciate your time and effort to produce these videos, and I appreciate the business allowing it! Cheers, RD
As a young 19 year old out of tech school in 1964 was a mechanic ground type on the TB-58 that flew chase for the XB-70 at Edwards AFB 6515 OMS. If there is anything better than one J-79 it is four in burner, you F4, guys only got two. When on to be a crew chief on C-141A and C-130E and finally got tired and got out in 1990. Now, really never ever want to work on another airplane. The cold, heat, wind and rain are for you young guys. But, would never want it any other way. J-79's will run forever. Carry on JayZ
"Everybody loves afterburner"
Hear, hear! I watched this as rest of family watched a movie. I consider myself the winner!
I'm just a car guy. But, I still watch this channel because learning about how jet engines work, how they're fixed and designed is still really fascinating. I'll never get a chance to work on one, so this is the closet I'll ever get. Really enjoy the content and the thrust action 🍻
I was an ammo guy working on the flightline. The noise is no joke. Probably the loudest thing I've heard is being at the end of the flight line directly underneath an F-15 doing combat takeoff. You can feel it in every nerve, every bone in your body. It's not just the noise. In some cases I would wear hearing protection and I still couldn't hear anything for a couple hours.
Nice! Yall got that engine tuned to perfection. Afterburner flame looks really smooth and clean, even compared to a lot of newer engines.
Getting a fire to burn so perfectly under any conditions is hard enough, so I can’t even imagine how much hard work goes into calculating, designing, building, testing and fine-tuning an afterburner assembly.
Yes, I love the smell of afterburner in the morning!
I know at air shows, low passes by twin engined fighters is almost bowel loosening. And the B1 Lancer at low level is extraordinary. It sneaks up, then WHAM.
Thanks for capturing this stuff
That is the best video yet, absolutely stunned by the power and beauty.
Thank you as always!
Local weather conditions at the test cell; windy, strong gusts at times carrying anything not held down. Awesome footage.
Beloved AgentJayZ,
May all lockwiring be quick & easy.
And your engine runs be free of stress.
Thank you for sharing.
Hearing the roar of the J79 again warms my Phantom Phixing heart.
Loved working on the J79-15 & 17s.
To know it's 20psi was actually just as interesting to know as it was amazing to watch. It's hard to get these numbers, especially for vintage engines.
On another note, I saw a video last week of a special railroad locomotive with a turbojet engine mounted on it with a special "nozzle" on it meant to blow snow off the tracks. The engine looked and sounded like it might have been a RR Spey. The engine didn't have any protective shroud over it and it looked like it had a pronounced waist in the middle. Seeing that made me wonder if you have ever serviced equipment repurposed for that configuration. It is because of your videos that I had any sense what kind of engine I was listening to. Thank you for all the wonderful sights, sounds and insights you share with us. My life is richer for it.
Not a Spey, but usually they are ancient centrifugal compressor engines, and fairly rare, because it was finally re-discovered that (news flash): jet engines do produce a lot of heat, but their main purpose is to produce thrust, and that plays hell with the ballast on a railway...
@@AgentJayZ Thanks for the response. Wow, I've never heard of that type of engine before. Maybe if you're inclined you could tell us a little bit about them (centrifugal compressor engines) some time. P.S. Stay safe, making videos shouldn't require wearing a hero's hat and getting pummeled with rocks. We love you man! We want you to save Jay for another day!
Well I’m 40 today (14th April) so I’m taking this video as one of my birthday 🎁 😀
I loved your description of how loud it is.
never gets old, appreciate the sacrifice! AgentJayZ gets stoned!
AgentJayZ.....you have taught me to love the J79. When I saw this upload in my feed, I went, "YES YES YES!!"
Me too
Love the afterburner shots.
Afterburner/rehreat videos never get old.
I for one, appreciate your sacrifice:-) another great video.
This never gets old. Thanks for posting it.
Man that was beautiful. Thanks for the awesome content, your sacrifice was worth it! 😁
Magic... absolute magical power!
Thanks for all the awesome videos!
I worked at Orenda in the early 80s...I fondly recall watching in the test cells the J-79, and J-85 engines going through their engine run-ups...A team from the NRC came to Orenda, to film in high-speed, what happened when a large object was thrown into the intake...
Another amazing video, Jay. Really liked the explanation about where you can handle standing and how the body responds to the sound.
Wow could almost hear that from Minneapolis Minnesota...fantastic video as always you do a great job with these videos...simply amazing !!
fabulous! keep em coming Jay.
Cut my mechanic teeth on USAF F-4D's with J79's. Spent many hours on the run/trim pad... tailhook engaged in a ground harness, while running in full afterburner. We would run at night. The show was amazing. And, yes... the sound and shear power of this engine needs to be seen and felt to really appreciate such technology.
9:30 I expected a stone to hit the lens at any time, awesome video!
Never gets old
Thanks, Jay, for all you do to get us the great shots! Duck!
wicked cool thanks for taking one for the team.
i noticed the different stages of re light or post combustion during the test jet engines fascinate me how they work Great video. 😊😊
Thanks for the video!
Worked overhauling the J79 dash 8 and dash 10's at MCAS El Toro in the early 80's
A beast of an engine!
Glad you didnt get smacked too hard by flying objects, and you has a protective clear filter on the camcorder!
Been a while since I've been here. Looks like the winter has been kind to you.
The engine start-up (from inside exhaust) was interesting. Thanks for another great video. I've missed my regular AgentJayZ/Jet City fix.
Wow! this never gets old :) almost could hear the roar across the Atlantic :)
super vid here with J79's at work, Goodbye 302sq F-4 OJIRO PHANTOMS having seen so many of jays vids i can picture the look of the bare engine as i watched them flying.. thanks to jay
That is one lovely engine running...
This engine brings back memories.
My favorite channel.
Thank you for showing the 4 levels of afterburner (starting at 12:08 or so)! That was interesting to see!
My dream would be to work with you. That would make me the happiest man on earth. I don't know the technicalities of jets but I learn super fast !!! You have the greatest job on earth. I am happy for you.
Luv these videos. Stockport uk
The legend is running once again!
Dang Buddy! Now that's how to clear a driveway!!! Love to see that sucker running during the snowstorm.
I have a few videos of these engines creating their own snow storm...
wow just wow the power is unbelievable.
Awesome as always ! Thank you .
Thank you- I’m such a fan of the j79:) went into some of my favourite 60s aircraft. Turbojets just have tha noise that still sounds more awesome than later turbofan era ones.
Now that's impressive-- power on!
Back in the 70's those things drove me insane at NAS Dallas, when they were running after installation on the F4's.
And they were a half mile away.
Everybody loves afterburners.....except the guy paying the fuel bill. Maybe.
It's ok to like the bigger, thirstier and younger sister.
Try hearing 2 of those on full AB for 2 years straight. We actually got numb to it but would turn our heads when we heard something different. They sounded really good in the 104 starfighters
I randomly thought the other day,I think I know where that engine is off too,I hope they keep their f4 for year's to come!
Listen to your instincts. Your head is basically a can of jello and sound pressure levels that high could very well produce displacements large enough to cause a brain bleed or worse. Don't risk it.
I've often held my breath watching you guys lean over the engines in operation, making adjustments, wondering if one had a cato of a disk, or a blade failure what would happen. I know that those sorts of things are usually contained, but considering the physics involved, the test cell is a mighty small place, even in the control room, I wouldn't consider it "safe".
I've spent most of my life around industrial equipment and even the little stuff can get you. I once was in in tiny (as in nowhere to run) underground room under a aluminum rolling mill at Alcan and we had to pressurize 5 freshly rebuilt 18" diameter x 14'h piston accumulators to 5000psi. I'll never forget the sound and sheer terror each time the pistons groaned as they moved. I remember thinking about being a spot on the wall if even a line blew off or an o-ring failed.
What you guys do is every bit as scary.
I'd suggest a scattershield or blanket, but it would probably only become a secondary projectile if the worst happens.
I guess that's another good reason to be so careful with assembly, not only do the aircraft pilots/passengers trust their lives to your work, you're personally right there the 1st time it comes to full power.
When you think of things in this light, it explains a lot of the seemingly overcautious practices followed in the assembly of these incredible machines.
Stay safe!
That would be really cool to see during heavy snow fall or rain. I used to run the TF40B engine and listening to them do excel/decell tests was AWESOME..... sure do miss it.
I have a video called full power in the rain.
WOW! Awesome video! Thanks! Judging from the size of that engine, A F104 Starfighter is basically an engine with a cockpit, a pair of wings, landing gear, and not much else?! Haven't seen the raw power of that engine displayed any better.
noises this loud shake you to the DNA.
One to the face! I’d say a concrete drive might be in order. Love the video and the sound of pure raw power!
I love the "get away" part 😂. Netherlands air force used to fly the starfighter. I have only seen the Italians fly, and one Norwegian 637. Best sounding plane ever made. I hope we will see one fly again in the Netherlands. Dont you guys have that engine? Love your videos ❤
I wish the camera mic, and/or my speakers were up to the task of portraying this sound. Having seen F15s take off from RAF Lakenheath in England its a utter JOY the power of afterburner noise
You know when you are in a club... next to the speaker towers... you pants are vibrating against your shins, and you can't hear somebody, even if they yell in you ear?
It's about a hundred times that loud.
I actually was a DJ in a rock club in the 80s...
Thank you for taking one in the face for OMFG AFTERBURNERS! Never gets old. I bet you get asked this question a million times, but do your neighbors ever complain? Or are you far enough out in the bush that it doesn't matter?
If I stood on that same spot, I’d shit my pants.
That is really really cool.
It certainly clears the snow!
Thanks Jay
Thanks, great video. J79 is my second favorite jet engine. Let me know when you get a j58. HA!
thanks for the video
I think that you not only have to glue the marshmallow roaster's feet to the floor, you have to glue the marshmallow to the stick!
I work near an airport that sometimes has military jets fly in/out. It’s always amazing how much louder and more violent these style engines are. And I imagine they aren’t at full power flying over a city.
@AgentJayZ you always go on how indescribable loud afterburner is. Last year I happened to be at the CIAS in Toronto at one of the small islands at the city. And by coincidence it was the turning point of all the fighter jets. I vividly remember when one F22 turned overhead, probably 100m above us with afterburner. Earth shattering and air ripping is really the term to use here. I can only imagine how violent this must be, if you stand right next to the engine.
I saw an F22 in Reno, and it could have been my vacation ears, but it seemed by much louder, snappier, and angrier sounding than I was expecting. Nice plane.
I still believe the Spirit to be the most body-intense sensation I've ever been to close too.. took off right over our heads and pulled up hard. (Taking off at military base. Not an air show)
The ground was shaking and rocking. The sound was low and thundering. I don't think I've ever gone out of my way to overly express pride in America, but at that moment I felt like I had been saved and reborn by "the church of murica." Baptized in jet fumes.
That "thanks for watching at the end" says much about the noise😂
All hail the high priest of jetwash! I have stood in front of the works of the great masters of art, sometimes for as much as 5 minutes but when I am at an air museum I usually have to be physically retrieved from the static engine displays! I don't know if it's beauty in the form of fitness for purpose or whether it is the display of the pure excellence of the craft of the machinists, fabricators and design engineers. I am however always completely transfixed and that is when they are not running. Start em up and for me it is just transcendental.
Хороший фен ! Лужа за ангаром высохла за минуту !
Nice blower to keep around to keep the dust off the shop floor.
I LOVE THE SMELL OF AFTER BURNERS IN THE MORNING !!!!!!!!!!!!!!!!!
4:26 "Probably physically not harmful..." When you have to qualify this with a 'probably' I immediately think its a bad idea :) Also the gravel bouncing around like popcorn was pretty interesting!
Thank you for sacrificing your face! Because everybody loves afterburners, LOL!
Subscribed! What beauty!
Thank you for this :)
Thats one nice Garden blower! Looks like you need to order more rocks for your drive way after this! LOL
'Garden blower" as in it moves the whole garden, not just the leaves on the lawn...
Use this to blow the snow from your driveway! ^^
I love the term “fire breathing monster”, it reminds me of sitting with the GE tech rep during ground school at Shaw AFB in the ‘70’s just marveling at the sense of raw latent power of even an inert J-79.
May I propose a science experiment I believe only you would be nuts enough to carry out? What would it look like if you rigged a fuel nozzle from a jet engine up on an outside fixture, pressurized it with jet fuel same as it would be at full rated thrust and ignited the resulting mist? Assuming you didn’t burn down your entire shop in the process, it would be a fascinating demonstration of the sort of energy being released in a turbine engine and provide a visual sense of what is ordinarily happening invisibly inside the engine and would reveal the flaming heart of your fire breathing monster!
I still fly but there’s no other thrill quite like that of going outboard and forward on the throttles of an after burning engine!
When I was young, living near Melbourne international airport in Australia; they had an engine test cell facility which they seemed to only operate at 3:0a.m. Although the airport always denied it, even 10 km from the cell, it shook the house and rattled windows. Somethings you can't hide.
When I was just out of school I got hired to write some fan balancing programs for GE Jet Engine Division in Ontario, California. I worked in the big jet engine test cell that handled turbofans. The little engine cells were wooden sheds about 12 feet high about 30 feet north of the big cell. I don't know what they tested there, but when they spun one of those babies up it was LOUD.
This is "jet-porn".... I wish I could be there and listen/watch that for all day ! Fantastic!
Awesome!!!
Hearing you talk i figured you were a fellow canuck. Confirmed with the home hardware pail lol
Colombia's Air Force still rocks these on its Kfirs (One for each)
We are in desperate need for new fighter jets, hopefully they decide for the Grippen
Thanks!
Y'all get the coolest shop heaters... Crank one up for 10 minutes, close the doors for 12 hours. XD
If by crank it up, you mean give it full power, that would burn about Nine Hundred Gallons (no typo) of jet fuel. Not enough air in our test cell to burn fuel at that rate for more than a few seconds...
Very nice.
This is sooooooooooooooo cool!
Amen to that!!!
Jay how do you get the engine into the test cell? Back up to front door and bring a-frame out the front to pick it off trailer or do you back in the back door to mount it in test cell? Figured the latter might be why the gravel was put down but not sure. Also how close can you go from the front under full power in after burner before you start to feel the rush of air going into the monster?
Beast 💪
serious machine
It occurred to me just now that if the J79 is this mind-shatteringly loud, then the F135 must be absolutely apocalyptic. It really puts into perspective just how much raw power modern engines have.
The F-35 at 250 yds in a flying display at Oshkosh, is much louder that the J79 at 50 yds in our test cell. My experience.
Well, that's terrifying.