We test run a J79-J1E with afterburner on a sunny, snowy, freezing cold day. There are a few new people with us, and they prove that "everybody loves afterburners !"
Hey, you just made a railway switch blower! No seriously, I'm a mechanic for CP rail, and one of my jobs is to maintain our jet blower truck. It's a semi truck with a Pratt and Whitney jet engine from an early model B-52 bolted onto the back. We use to to blow packed snow out of railway switches, where plows can't get to. If you search cp rail jet truck on TH-cam, you will find a video of it melting packed ice off of a snow plow.
Coolest videos I've ever seen... thank you so much! I've watched about 2 hours now non-stop. Thank you for taking the time to make this so informative, so high definition and with great narration. Hats off to you sir.
Fantastic Jay! One of the best! Thanks for introducing everyone and thanks to them aswell! Having a great group of coworkers and a career you love is priceless, income is secondary to that!
I guess the coolest thing about your videos is. That after all these years of life, blown away (literally,lol), by jet engines, and the mystery of how they are made and work, that you answer all those questions in a very educational and fun way. Thanks.
Ah, I remember that J79 sound well... from tarmac to EOR, for last pre-takeoff inspection--being behind two aircraft, each with two of those beasts at full AB, taking off in formation. Good thing the intake is full size, flaring outward... I'd still be beyond wary of walking anywhere near the front of that engine while at high RPM/thrust. I well recall feeling my fatigues or field jacket material being pulled toward the intake while crawling around under that plane during the last inspect of hydraulics/tires before boom and zoom time... Very cool. I'd like to order two of those with an F-4 around them, please. :-)
I worked at a classification rail yard during the mid-80's, in Galesburg, IL. The track maintenance group had a jet engine mounted on a piece of yard track equipment, that they would use to de-ice the various switches of heavy snow and ice. Only problem was, it would ALSO pick up ballast and bow them all over the place. If you SMART, you were far away when they fired it up!! :)
Another great test, and some nice afterburner footage! Jay, please tell your whole crew 'hi' from the internet, and 'thanks for letting us see into your shop'
I used to work on the F-4 with these engines and ran them while in the cockpit lots of fun my most favorite A/C thank you for making this video and sharing
Holy shit! You lucky, lucky man. I know you do your best to provide us videos of these events, but I'm sure nothing does it justice like being there. Thank you again!
Well, dude, you get the award for best question ever. As a matter of fact, your question is THE question, and it goes back to the very beginning. The limitations of jet power were laid out in 1928 by Frank Whittle, in his paper called "Future Developments in Aircraft Design". I once read it online.. But it seems to be difficult to find these days. If you read it, you will see that nothing we are doing today is beyond what Sir Frank was imagining back in the day...
Hi, first at all want to congrat to all your working crew in your shop! This nice engine looks is ready to install. This test shows me it is a good snow blower and melter! All your videos are awesome, please keep doing this job for all of us, not only in North America, but for the entire world! Remember I'm in Panama City, Panama and keep myself learning with your videos. FELICITACIONES DESDE PANAMA!
Awesome pictures and sound! I have goosebumps everywehere :-) Think the results are clear: Winner: J79 - Snow: comes off as second-best ;-) Thanks again for up filming and uploading!
The jet nozzle is what accelerates the exhaust gases to make thrust. It needs to be larger when the exahust is hotter through the use of the afterburner. So it is adjustable, and controlled by throttle position and exhaust gas temperature.
The start cart peaks the mic. Then the engine starts, then we go a hundred time louder to full dry thrust. Then we go another hundred times louder in afterburner. The audio recording is hopelessly slammed into "meaningless" even before the big engine gets going.
I don't know where this is in our country.....but it's on my bucket list for sure! Just the sheer power! Just awesome! I fly model turbines and they are impressive enough as it is. :-)
"Secret" test cell?! Ha-Ha! That's funny AgentJay! I know where it's located but nevertheless the videos are very interesting. You and Robin are very generous for sharing the details with us viewers. Those "other guys" at the other test facilities would never give such an in depth look at how things work. My brother whom is a pilot for private jets also found these videos very fascinating! Keep 'em coming!
Good question. I am not exactly sure of the answer, but I think the flame basically begins in the eddys created by the flame holder rings. If that is the case, they don't melt because they are made of very temp resistant alloys, and they are cooled by the exhaust gases, which are about 800F... well below the melting point of those alloys.
That's Robin running the throttle, and his actions are one of the input signals used by the fuel control. In the test cell, Robin plays the role of the pilot in the aircraft.
The J79 engine has been around for a very long time. I used to be a Jet Engine mechanic on the J-79 engine back in the early '60's. At that time that aircraft was the fastest thing in the skies.
the F104 starfighter, the mighty F4 phantom had two of them, I remember these as a kid... the B58 had 4, but I never saw one in person what else ran the J79?
Hi, I got a question for you, would it be possible to edit in the data such as rpm and egt on screen during those tests ? That would be most interesting ! Thanks and keep up the videos !
S&S Turbines is a company that builds, overhauls, and repairs gas turbine engines... for customers who own and use them. Then we test them... at our test cell facility, located where there are no neighbors for miles.
Yes, we have to be careful to avoid icing conditions, because ice or frost can build up on the struts, then fall into the compressor, and as ice chunks, cause damage much like rocks would. Icing is possible at temps around or just above freezing, and at high humidity. We are in a very dry region here, and in winter it is usually so cold the air can't hold enough humidity to form ice.
More fun than any human should have but I won't tell. BTW, don't tell anyone but I did a J-79 at the Mojave AP in tandem with a F-100 in MIPCC config. Only did stage 4 AB though. Thanks for the videos!
I wanted to edit Robin's name in once I saw you rattle off the team but it wouldn't allow it. It's great how you try to respond to all the questions. Good stuff!
This is your best, or at least near-best J79 video yet! It ranged from the vane/stator & exhaust cone actuators to the A.B blasting snow to chicks giving the 'Thumbs-Up'! Maybe you can just 'post' the full A.B. thrust reading on that console in a comment, instead of trying to video it. Great job & thanks again. Regards, Darren PS: Looking forward to A I video!
Very cool. How is the software divided up to run a machine like this? Does most of the logic for coordinating the mechanics to maintain operation of the engine live onboard and then "basic" inputs and reporting of statistics happen through an interface with an external controller?
Needed that for the driveway... Why the puffs of smoke? I am assuming they are fuel dumps (over rich), is it a transition issue or just fun (or both)? Thanks for sharing with us!
Cool vid and nice view of the afterburner flame. Nice to meet the folks as well. I was wondering something, does the afterburner flame start at or near the injectors before the flame holders? or after the flame holders? If its before the flame holders, what prevents them from melting? As you say, "Thanks for watching", I'll say, Thanks for posting. :)
Anyway, thanks for all the great videos. I'll never have to be a jet tech but the information is fascinating. Tell your coworkers thanks for saying hello to the internet. We're not that scary, just fascinated. It's really good stuff.
Never seen it in person myself, but have seen photos at my old airbase, RAF Alconbury, of a J-79 bolted down into a heavy truck for the purpose of blowing snow off the runway. Woulda been wild to see that in person.
Great Scott! It's good you take such care of small engines such as this. Temporal anomalies are more an issue for the really big ones. Once you exceed 1.21GW anything could happen. If it runs on plutonium, forget it. Seriously are there any environmental conditions where you can't do a test, such as way too cold or too much precipitation? I did some reading a while ago on bellmouth depression (came up with stuffall) and came across interesting stuff about icing in the intake.
Excellent - make sense and thanks for the reply! I have a couple more general questions. What's the holy grail for engines like this? High power, low weight, low fuel consumption? Is there a primary problem that is considered the main limiting factor given current technology with engines like this?
Well, that's our benchmark, but the critical temp is 300K. A degree Kelvin is one degree celsius, starting from absolute zero. Room temp is about 293K. Thing is, with synthetic turbine oils, when you apply a high speed rotation in a plane perpendicular to the rotation of the supporting substrate at any temperature below 300K, chronons are destroyed faster than they can be replaced by the decomposition of heatilons. This results in time running backwards, and it's something we really try to avoid
A few questions for the hi-tech guys: 1 - how much augmentation does a J79 get on full afterburner? 2 - how much more fuel does it burn on full afterburner? 3 - how long can you keep the afterburner going before something breaks? 4 - what's the white horn on the air intake for? 5 - what are the petals on the exhaust for? (they seem to open and close randomly) 5 - finally, how much fuel did you guys burn on this test? By the way, congrats. Great video.
All of the answers you seek are easily found, except maybe 2 and 5b So: 2) 85 - 90 gallons per minute 5b) We didn't measure a total... but around a couple hundred gallons of JetA
soot is wonderful, brown snow is always fun....also what is the fuel consumption rate on a full afterburning J79, and do the commercial units use after burner?
Jay did you know in the 70's they made a version of the F16 powered by a J79. it was for country's that had F4 fighters and had tools and parts for J79s already. it didn't go anywhere.
Hey just curious, but what causes some engines in full afterburner, to produce patterns in the exhaust, but some don't? Is it related to increased pressures in the newer engines?
Fire suppression systems are part of the aircraft. None of the engines we work on have any type of fire extinguisher equipment. I only make videos to show the stuff we work on. I don't know anything about aircraft fire extinguishing systems.
I know you can't divulge, but I can only hope it's going in a 104! I hear Starfighters in Florida bought a few more from Italy so I think they're up to nine now. Got to see them fly as a two ship display. Super cool.
yes you did describe that you have sensors on the engine frame to test load. Question: When your doing the afterburner. Why is the flame not seen like on a modern jet fighter? Seems like the after burner flame should be a purple hued flame some twenty feet long after the turkey feathers. Do I have the wrong impression about afterburners?
when big Al mentioned that he could feel the engine pulling him, it gave me goosebumps. every time you walk near the front of a working jet engine i cringe. i think i'd have serious issues getting near the sucking end of one of those things. meanwhile that jetwash looks particularly fun to jump in to.
You don't have to thank us for watching. I have to thank you for making these great videos.
I enjoy it when people enjoy what I offer.
I agree
Edit: i'm the 50th like on your comment
My neighbors hate this dudes videos.
To answer the burning question... It absolutely blends! Love the sound of a J79!
well there goes my complete salary in fuel for the next 10 years!
Hell of a snow blower
Hey, you just made a railway switch blower! No seriously, I'm a mechanic for CP rail, and one of my jobs is to maintain our jet blower truck.
It's a semi truck with a Pratt and Whitney jet engine from an early model B-52 bolted onto the back. We use to to blow packed snow out of railway switches, where plows can't get to.
If you search cp rail jet truck on TH-cam, you will find a video of it melting packed ice off of a snow plow.
Coolest videos I've ever seen... thank you so much! I've watched about 2 hours now non-stop. Thank you for taking the time to make this so informative, so high definition and with great narration. Hats off to you sir.
Fantastic Jay! One of the best! Thanks for introducing everyone and thanks to them aswell! Having a great group of coworkers and a career you love is priceless, income is secondary to that!
"I'm always blown away by these tests" Haha yeah literally! ;-)
Love your video's man, they are super interesting.
***** Thanks, and welcome to Jet City !
I guess the coolest thing about your videos is. That after all these years of life, blown away (literally,lol), by jet engines, and the mystery of how they are made and work, that you answer all those questions in a very educational and fun way. Thanks.
Did a really good job of capturing the intensity of the afterburner. Nice video.
Ah, I remember that J79 sound well... from tarmac to EOR, for last pre-takeoff inspection--being behind two aircraft, each with two of those beasts at full AB, taking off in formation.
Good thing the intake is full size, flaring outward... I'd still be beyond wary of walking anywhere near the front of that engine while at high RPM/thrust. I well recall feeling my fatigues or field jacket material being pulled toward the intake while crawling around under that plane during the last inspect of hydraulics/tires before boom and zoom time...
Very cool.
I'd like to order two of those with an F-4 around them, please. :-)
Vietnam?
Saw this video this morning on All Things Aero's Facebook page. You've made the big times Jay!
definitely in my top three most fun to watch test cell runs . watched like 8 times since you uploaded it.
I remember that day also,my grandson was born. Looks like everyone had a great day! Keep those tests coming.
Awesome video. Looks like you have a great and effective team, too.
Just came over from Plane Savers (Bobby sent me) and WOW! You got me from Afterburner!
Loved and Subscribed.
You guys are amazing. Thank you for making this videos
thanks for making these, badass behind the scenes stuff is SICK!
We need a pub next door to our shop !
That has to be so satisfying to see them running after putting so much effort into working on them.
I worked at a classification rail yard during the mid-80's, in Galesburg, IL.
The track maintenance group had a jet engine mounted on a piece of yard track equipment, that they would use to de-ice the various switches of heavy snow and ice.
Only problem was, it would ALSO pick up ballast and bow them all over the place. If you SMART, you were far away when they fired it up!! :)
Another great test, and some nice afterburner footage!
Jay, please tell your whole crew 'hi' from the internet, and 'thanks for letting us see into your shop'
I used to work on the F-4 with these engines and ran them while in the cockpit lots of fun my most favorite A/C thank you for making this video and sharing
Holy shit! You lucky, lucky man. I know you do your best to provide us videos of these events, but I'm sure nothing does it justice like being there. Thank you again!
Well, dude, you get the award for best question ever.
As a matter of fact, your question is THE question, and it goes back to the very beginning.
The limitations of jet power were laid out in 1928 by Frank Whittle, in his paper called "Future Developments in Aircraft Design".
I once read it online.. But it seems to be difficult to find these days.
If you read it, you will see that nothing we are doing today is beyond what Sir Frank was imagining back in the day...
Hi, first at all want to congrat to all your working crew in your shop! This nice engine looks is ready to install. This test shows me it is a good snow blower and melter! All your videos are awesome, please keep doing this job for all of us, not only in North America, but for the entire world! Remember I'm in Panama City, Panama and keep myself learning with your videos. FELICITACIONES DESDE PANAMA!
When your dad gets you to shovel the front yard but you’re feeling lazy
Awesome pictures and sound!
I have goosebumps everywehere :-)
Think the results are clear: Winner: J79 - Snow: comes off as second-best ;-)
Thanks again for up filming and uploading!
Nozzle area control is carried out by the engine's fuel control, using temperature measurement of the exhaust gases as one of the inputs.
Great Team-- One Hella've Job-- Thanks Jay.
Oh my god, I am seriously in love with these engines.
Yes! The law states that the more heat and pressure you create, the louder it's going to be.
Welcome to Canada !
man that is cool seeing how afterburners work and see how the turkey feathers on the nozzle work to provide the thrust to go supersonic
The jet nozzle is what accelerates the exhaust gases to make thrust. It needs to be larger when the exahust is hotter through the use of the afterburner. So it is adjustable, and controlled by throttle position and exhaust gas temperature.
This is the second time I've been sent a jet engine video at a time stamp where the engine was screaming and peaking the mic. Gets me every time
The start cart peaks the mic. Then the engine starts, then we go a hundred time louder to full dry thrust. Then we go another hundred times louder in afterburner.
The audio recording is hopelessly slammed into "meaningless" even before the big engine gets going.
It's an amazing machine, somebody put in their wrench time. It would be a pleasure to meet you one day and get a tour of the shop.
I love these man. Never gets old!
Me too. In ten years, I've only missed one J79 afterburner test run...
I don't know where this is in our country.....but it's on my bucket list for sure! Just the sheer power! Just awesome! I fly model turbines and they are impressive enough as it is. :-)
Recommended to me after 7 years, and the algorithm never disappoints.
"Secret" test cell?! Ha-Ha! That's funny AgentJay! I know where it's located but nevertheless the videos are very interesting. You and Robin are very generous for sharing the details with us viewers. Those "other guys" at the other test facilities would never give such an in depth look at how things work. My brother whom is a pilot for private jets also found these videos very fascinating! Keep 'em coming!
Thanks :)
I'm learning a lot of interesting stuf from your vids
good god its just that deafening roar that just freaking bad ass.
Good question. I am not exactly sure of the answer, but I think the flame basically begins in the eddys created by the flame holder rings. If that is the case, they don't melt because they are made of very temp resistant alloys, and they are cooled by the exhaust gases, which are about 800F... well below the melting point of those alloys.
That's Robin running the throttle, and his actions are one of the input signals used by the fuel control.
In the test cell, Robin plays the role of the pilot in the aircraft.
What a great way to clear your driveway!
I love these videos, keep them coming!
Please?
Thanks for another fine lesson!
Dude... the jetwash.. the actual exhaust stream... is certain instant death.
Great video as usual!!
How much does the use of AB affect the life of the engine (time between overhaul)?
Thanks Jay!!
The J79 engine has been around for a very long time. I used to be a Jet Engine mechanic on the J-79 engine back in the early '60's. At that time that aircraft was the fastest thing in the skies.
the F104 starfighter, the mighty F4 phantom had two of them,
I remember these as a kid...
the B58 had 4, but I never saw one in person
what else ran the J79?
@@stinkyfungus Israeli Kfir used the J79
This engine proved that with enough power even a brick could fly. Two of these in the F4 Phantom.
Yea, that's about the right glide ratio.
Hi, I got a question for you, would it be possible to edit in the data such as rpm and egt on screen during those tests ? That would be most interesting ! Thanks and keep up the videos !
MAN THAT IS JUST SICK, EXTREME, WILD AND CRAZY HORSE POWER!!!
S&S Turbines is a company that builds, overhauls, and repairs gas turbine engines... for customers who own and use them.
Then we test them... at our test cell facility, located where there are no neighbors for miles.
Yes, we have to be careful to avoid icing conditions, because ice or frost can build up on the struts, then fall into the compressor, and as ice chunks, cause damage much like rocks would.
Icing is possible at temps around or just above freezing, and at high humidity.
We are in a very dry region here, and in winter it is usually so cold the air can't hold enough humidity to form ice.
Quite possibly your greatest video. Ever.
And yes, i'm pretty sure i've watched all of them!
More fun than any human should have but I won't tell. BTW, don't tell anyone but I did a J-79 at the Mojave AP in tandem with a F-100 in MIPCC config. Only did stage 4 AB though. Thanks for the videos!
I wanted to edit Robin's name in once I saw you rattle off the team but it wouldn't allow it. It's great how you try to respond to all the questions. Good stuff!
Im just here working on a paper work school, completely unrelated to this video but thank you for sharing your craft
Wow, That's is truly awesome, it even melted the snow.
Noticed one of the read outs on the display in the control room read "thrust". Are the thrust measuring devices built into the engine test stand?
This is your best, or at least near-best J79 video yet! It ranged from the vane/stator & exhaust cone actuators to the A.B blasting snow to chicks giving the 'Thumbs-Up'! Maybe you can just 'post' the full A.B. thrust reading on that console in a comment, instead of trying to video it. Great job & thanks again.
Regards,
Darren
PS: Looking forward to A I video!
Very cool.
How is the software divided up to run a machine like this? Does most of the logic for coordinating the mechanics to maintain operation of the engine live onboard and then "basic" inputs and reporting of statistics happen through an interface with an external controller?
Really really awesome, as Megan says INTENSIVE! I find myself crunching my fist so hard that it gor all swetty, thanks for showing me this!
When comming off burner the flame goes blue..is this a lean burn from drainage of the system...is ther a two step burner? Thanks Jay good stuff
Needed that for the driveway... Why the puffs of smoke? I am assuming they are fuel dumps (over rich), is it a transition issue or just fun (or both)? Thanks for sharing with us!
Cool vid and nice view of the afterburner flame. Nice to meet the folks as well.
I was wondering something, does the afterburner flame start at or near the injectors before the flame holders? or after the flame holders? If its before the flame holders, what prevents them from melting?
As you say, "Thanks for watching", I'll say, Thanks for posting. :)
thanks again for my monday night entertainment!!
Thank you.Great Video.
If you built a Snowman (or a few in a line) in the exhaust path it would be sooooooo cool to see how long they lasted!! :D
Cheers for the vid!!
Excellent, thanks! You rock AgentJayZ!
Anyway, thanks for all the great videos. I'll never have to be a jet tech but the information is fascinating. Tell your coworkers thanks for saying hello to the internet. We're not that scary, just fascinated. It's really good stuff.
Never seen it in person myself, but have seen photos at my old airbase, RAF Alconbury, of a J-79 bolted down into a heavy truck for the purpose of blowing snow off the runway. Woulda been wild to see that in person.
Great Scott! It's good you take such care of small engines such as this. Temporal anomalies are more an issue for the really big ones. Once you exceed 1.21GW anything could happen. If it runs on plutonium, forget it.
Seriously are there any environmental conditions where you can't do a test, such as way too cold or too much precipitation? I did some reading a while ago on bellmouth depression (came up with stuffall) and came across interesting stuff about icing in the intake.
awesome videos. surprised the shop floor doesn't take flight
Excellent - make sense and thanks for the reply!
I have a couple more general questions.
What's the holy grail for engines like this? High power, low weight, low fuel consumption?
Is there a primary problem that is considered the main limiting factor given current technology with engines like this?
Well, that's our benchmark, but the critical temp is 300K. A degree Kelvin is one degree celsius, starting from absolute zero. Room temp is about 293K.
Thing is, with synthetic turbine oils, when you apply a high speed rotation in a plane perpendicular to the rotation of the supporting substrate at any temperature below 300K, chronons are destroyed faster than they can be replaced by the decomposition of heatilons. This results in time running backwards, and it's something we really try to avoid
A few questions for the hi-tech guys:
1 - how much augmentation does a J79 get on full afterburner?
2 - how much more fuel does it burn on full afterburner?
3 - how long can you keep the afterburner going before something breaks?
4 - what's the white horn on the air intake for?
5 - what are the petals on the exhaust for? (they seem to open and close randomly)
5 - finally, how much fuel did you guys burn on this test?
By the way, congrats. Great video.
All of the answers you seek are easily found, except maybe 2 and 5b
So:
2) 85 - 90 gallons per minute
5b) We didn't measure a total... but around a couple hundred gallons of JetA
Your crew is like a family of turbine enthusiasts. Hot video and cool snow :D Once again...thanks for posting ;)
soot is wonderful, brown snow is always fun....also what is the fuel consumption rate on a full afterburning J79, and do the commercial units use after burner?
Jay did you know in the 70's they made a version of the F16 powered by a J79. it was for country's that had F4 fighters and had tools and parts for J79s already. it didn't go anywhere.
Noisy and inefficient at low speeds but I'll be damned if it isn't more beautiful to watch and listen to than a turbofan...
Oh you have a snowblower, that's nice, we have a jet engine.
Hey just curious, but what causes some engines in full afterburner, to produce patterns in the exhaust, but some don't? Is it related to increased pressures in the newer engines?
In USSR they actually used two MiG-15's engines mounted on truck for cleaning snow and ice on runway.
enjoying the video
very amazing
thanks
Fire suppression systems are part of the aircraft. None of the engines we work on have any type of fire extinguisher equipment.
I only make videos to show the stuff we work on. I don't know anything about aircraft fire extinguishing systems.
Is this a routine check? Like checking if its still on top shape? :D i know nothing about jet engines lols
I know you can't divulge, but I can only hope it's going in a 104! I hear Starfighters in Florida bought a few more from Italy so I think they're up to nine now. Got to see them fly as a two ship display. Super cool.
That's trippy af..
That being inside a fighter jet..gosh
yes you did describe that you have sensors on the engine frame to test load.
Question: When your doing the afterburner. Why is the flame not seen like on a modern jet fighter? Seems like the after burner flame should be a purple hued flame some twenty feet long after the turkey feathers. Do I have the wrong impression about afterburners?
Incredible machines
The next J79 run can you show the thrust gage in the control hut? I would like to see it go from 400+ #'s of thrust up to full power! Thanks !
when big Al mentioned that he could feel the engine pulling him, it gave me goosebumps. every time you walk near the front of a working jet engine i cringe. i think i'd have serious issues getting near the sucking end of one of those things. meanwhile that jetwash looks particularly fun to jump in to.
What is the purpose of that constricting/expanding structure on the end of the exhaust?
Do turbines require some kind of warm up before applying full load ? If yes, what are the rules / indicators ? Oil temp ?
I love you guys.
" We are going to burn it all."
what units was the thrust measured in, saw it on the bottom right of the screen
is the amount of thrust the afterburner adds controled by fuel flow or some other factor?
So how fast can you get that garage moving? :)
Hey... uh, that was ME who said that, and he already knows that. Cheers.