Hey Jay, could you explain why the bullet nose has that long shaft/beam thing at 11:45 when compared to other engines which just have the bullet nose with no long shaft/beam?
why the white smoke during early run up? and just after shut down? and so how does the fuel ignite so well in the afterburner? you'd think it'd be being mixed with air that has already burned and wouldnt have too much oxygen left in it to burn? Idk lol
@DiamondPilotDan Only a fraction of the oxygen passing through the engine is consumed even at full military power, so there is plenty left over to feed the afterburner. If the engine burned most of the oxygen passing through it, it would get so hot that the interior would melt. Because an afterburner is at the tail end of the engine, the engine can get some more power from that leftover oxygen without heating up its interior too much.
Cant believe the tripod wasnt at least knocked over. It must of just been out of the main jet blast area otherwise it would of ended up in my back garden in the UK!!
@AgentJayZ every afterburner I have seen is electrically ignited except the J58 which uses trietylborane, a chemical, to ignite it. Why does it require a chemical ignition system vs. electrical?
@tranceaddict704 The J79 requires a torch ignitor, fuelled by Jet-A and initially set off by a high energy spark.
The J58 requires a torch ignitor, fuelled by triethylborane and initially set off by a high energy spark.
It needed an extremely violent source of ignition to make sure the fuel would ignite in the harshest of conditions : travelling at supersonic speed in the thin air at maybe 80,000 ft and at temperatures of -80F, give or take.
I swear! I think I might look more into being a jet engine mech, because every day I go to plane spot at MSP. The things that I love to hear see and wish I could touch are the engines! I ordered a JT8D C-1 Fan blade just for pure satisfaction of owning a part of an engine that will soon be a rare sight across the world.
I tell you jay, one of the days that I have enough money saved up I will make the trip to FSJ!
@AgentJayZ We use it in F104G or TF and in F-4 fantom with small differences. I remember in the left side of the engine was a box wich controled the blades in case of smoke when guns was in action. Are you in the airforce there or something?
Very nice video! Reminds me of old days :) it's a J79-J1E the engine for the IAI Kfir. i had more than one thousand engine runs in my log book :) I still remember all parameters limitations by heart. and BTW yuor engine burns oil probably from # 3 bearing scavenge pump/tube.
Were do you guys acquire these J-79 Turbojets at ? Does AMRC out at DM AFB in Arizona sell them to you ? Great Video When I was in the USAF I worked on the PW F-100.
Until you see one of these babies in full a/b on the cats it is impossiblet to appreciate the power, sound, and fury these engines produce. I worked on RA5Cs in the early 1970s. It's an honor to have been a Cat Checker with RVAH12 so I could see it (and feel it) first hand. Fly Navy.
AgentJayZ, can you please describe what is going on with the exhaust nozzle during the testing? Does the throttle change when it narrows? I understand the nozzle opens during A/B for cooling correct?
@hunterhalo2 No , and no. in a nutshell, the area of the exhaust nozzle is adjusted to maximize the acceleration of the exhaust gases to provide forward thrust. Since the afterburner adds a small amount of mass (fuel) and a lot of heat to the exhaust gases, they are larger in volume. So they are accelerated best through a larger orifice.
How the engine controls this I'm a bit rusty on. There is a lot of emphasis placed on temp. If the AB isn't lit... the nozzle isn't fooled into opening.
Congratulations for this amazing video. It's also very usefull for teaching. It will be interesting if you show how you can check the power of this engines.
Hi JayZ, I'm amazed that the central thrust bearing can keep the shaft from ripping itself right out of the engine case (I guess thats why it costs $25,000) or for that matter that the test stand can hold the engine back! You have the coolest job!
I've been working on the design of a 6 person HPV to set a land speed record. So far I haven't seen anything like what I want to build but you have all the parts and I'd be happy to have you help pedal it if and when! Mark
We used to get Concorde into Liverpool airport every year on charter for the races at Aintree. There is a road that runs right behind the runway threshold and when she used to light up all four of the burners you'd be hanging off the fence with all sorts of rubbish hitting your face. What an experience, I'll never forget it.
@izaatmusic It burns over 80 gallons US per minute in afterburner. Jet A was 1.60CDN per litre the day of this test. US /CDN gallons... US/CDN dollars.... that works out to - a lot !
@Wonkabar007 I had the HDD and the DVD cameras die on me while filming, which is why I went looking for cameras with no moving parts. Up until the SD cameras, the only reliable ones were tape-based camcorders.
For a while I was thinking about breaking out the full-size VHS shoulder-top Panasonic...
I love the way that your internal organs vibrate and you get pummelled by sound waves when an aircraft goes into full reheat right over your head in a vertical climb...:)
Pleeease keep loading videos this is really intriguing! Really appreciate you taking the time to shoot and show us this footage we know how busy you must get! Thanks heaps!
@oisiaa I had the same thing happen to me at Nellis AFB. I was standing near the end of the run way, and then I see the 4 afterburner's flame trails from a B1 that was coming straight for me. It took off, pointed the exhaust straight at me. Nothing could have prepared me for the noise I was about to hear, no FEEL. The ground was shaking, and my eyes were tearing up it was so loud. I want, no... NEED an afterburner for my jet engine.
@oisiaa, I too had a similar experience with the B-1. After a fly over shaking everything in my house, I got outside quick enough just to catch a glimpse of the aircraft and to witness what sounded like every car alarm in my entire neighborhood going off all at once. I've never seen or heard anything like that before. :)
@gidge348 I think I mention in the video that it is a GE CF6. It is a two-shaft engine. The 16 stage hi-pressure compressor is driven by a two stage hi-pressure turbine. The "fan" is actually a two-stage lo-pressure compressor, the first stage of which is much enlarged to move much more air than can be fed into the HP compressor. The LP compressor is powered by a 5 stage LP turbine.
This would be called a free power turbine if it simply drove a shaft.
@gidge348 By convention, if an LP turbine is used to drive an LP compressor ( also known as a fan if it is enlarged to "bypass some of its output air around the fuel-burning core" ), then it is called an LP turbine.
If the LP turbine delivers its power via a shaft to some external load, like a helicopter transmission or an electrical generator, or even a reduction gear of a turboprop, then it is called a free power turbine.
@AgentJayZ Thanks for that great explanation. One more quick question how much of the power produced by the engine would be transferred to the compressor/fan shaft and would it be feasible to use that shaft with the fan removed to run say a ground based generator?
@gidge348 You've got some good ideas... so good you've just invented what GE did some years back. They took the fan off their highly successful CF6-6, and used the LP (fan) turbine to drive a shaft... which could drive anything. They called this machine the LM2500, and it is their most successful industrial engine. It has a 90% parts commonality with the CF6-6.
It is hard to say what I was my favourite and what wasn’t (I can’t say I “hated” any of them)
The clips I liked the most was probably the detail ones where you are doing a job, lock wiring, rebuilding a seal, checking a bearing etc.
The least favourite were probably some of the plain (no after burner) test cell runs as I think a video cannot do justice to the pure power and energy standing next to one of these monsters at full noise.
I guess I am just dreaming but the questions about CF6-6 & LM2500 were that.....just say someone built a car like Thrust SSC with 2 x LM2500’s driving diffs and a front drive axle making it wheel driven. Thrust SSC is obviously a stable high speed shape and the wheel driven record is “only” 458.196mph........ Oh well all I need is a spare 10 Million dollars...... no problems....
I'd like to take this opportunity to say that the entire collection is most interesting as well as educational. Thank you for sharing the knowledge and the time taken in documentaries.
I as well like others here appreciate the videos where you show us the details of operation, assembly, materials and components and the recommendations of the manuals!
Amazing!! And the camera adds so much to this video as well. Gives us a true sense of the sound. I would be curious how much (or if) the barometric pressure increases where the spectators are standing. Great stuff Jay!
Great close-up of the A/B, just need a longer lens so you can move the camera farther back so it wont vibrate as much. One of my buds in power plants offered me to go watch them test a F404 engine and I was wondering if the vibration would ruin my Canon T1i or the lens. Good selling point for canon though, im surprised the little point-and-shoot survived!
How often do you have to inspect the mounting points into the floor of the shop? As fun as it sounds, having one of these things go on an unannounced tour of the Peace Country would not be good.
Will you guys ever entertain the idea of an open house where the public could go out and see a live test or would the liability be too much?
Hello there! Carlos from Sweden really amazing videos you have.. I'm really interested in watch two things ... one, how the engine starts? and two can you show me the reverse thrust of any jet engine? How it work? Thanks
@carlosmax50 I have a video about the start cart, and a video of how to start a jet engine.
We don't work with or test any sort of thrust reversing system. An excellent source of information is a book called "aircraft gas turbine powerplants" published by Jeppeson.
The white smoke coming out he back of the engine, is that unburned fuel? If the afterburner is turned on when there is a big dense cloud of that smoke wouldn't it ignite?
@saxonlight Yes, that is a mist of fuel, and for reasons I'm not clear on... it is extremely difficult to ignite. The reason the engine has a torch ignitor, spitting flame into the afterburner duct, is that simply adding a spark to this mist of air and flame does not always result in combustion.
@AgentJayZ I think you are right there. I have seen similar clouds during jet car exhibitions and have always thought the jet cars afterburner ignited the cloud but in looking just now at a few jet car videos it looks like the afterburner simply helps blow the cloud out the way faster and the ignition I have seen previously is really raw fuel being dumped into the afterburner for a more dramatic effect. Thanks for reply BTW and again for all the videos, very interesting and educational. =)
Wow, brings back memories of watching the F-4's operate out of Homestead AFB when I was a kid. Spec-f'ing-tacular to see this engine operate close-up like this. Much thanks for the video (and all the others!).
The shaking camera really does help where the microphone can't. Looked like a hurricane was happening outside... I'd pay cash to see one of these tests in person. Just awesome!
Nice. A proper afterburner with a variable nozzle. I like the howl that the J79 makes. Would sound even better on reheat. I can't even imagine how loud it would be.
Another great video. I know how loud these things are as in my teens I was in the air training corps, and we went and watched a super sabre test its afterburner and we were about 20 feet away
What am I seeing in the front? Does the compressor lead off with a set of stator blades? Or are those part of the test fixture?
I really like the barren, blasted, eroded wasteland aft of the exhaust. It reminds me of the Trinity crater in New Mexico. :)
geonerd 12 hours ago
@geonerd The variable inlet guide vanes are the first thing you see. Then the first stage of the compressor, which is the first thing that rotates.
The guide vanes pivot to direct the intake air into the compressor at the best angle for the first stage compressor blades.
Jetwash alley is hallowed ground...
AgentJayZ 12 hours ago
@AgentJayZ OK, thanks. All the engines I can remember seeing start of with spinning compressor blades.
geonerd 12 hours ago
Hey Jay, could you explain why the bullet nose has that long shaft/beam thing at 11:45 when compared to other engines which just have the bullet nose with no long shaft/beam?
343jonny 2 days ago
@343jonny That is a tube we use to adapt the output of our start cart to the input of the engine's starter.
In the aircraft this engine is installed, an air pipe fits right where we have place the tube.
AgentJayZ 2 days ago
pffft who needs a lawnmower!
pyrexian26 1 week ago
tanks man
lucianosr71 2 weeks ago
Wow that is just stupid power !!!! - Very nice!
zaprodk 1 month ago
How many pound of fuel does that gas turbine burn up on after burner.
what is the rate of consumption,when at idle.
Do you guys use k-1 or JP-5.
Very surprised the camera didnt shake apart.
Do you guys have a load cell on the cradle to measure the force out put.
yes it was dirty ENGINEERING PORN I feel so dirty.
arbitor1701 1 month ago
@arbitor1701 Idle, a couple gallons per min ( we didn't measure idle)
Full military power 37 gal per min. The bigger Canadian gallons !
Afterburner uses 50 gpm, so a total of 87 gpm in full AB.
AgentJayZ 1 month ago
ok the red neck in me wants to turn this into a badass grill for meat!
killbilly069 1 month ago
i'll take two if you throw in a Phantom
metalreign1 1 month ago
@metalreign1 We require a 50% deposit, and we'll be happy to meet your order. Shipping not included.
AgentJayZ 1 month ago 2
@metalreign1 Thats an GE J79 from F-4! I can see it cause of the Nozzle!
Lee78072 1 month ago
Now this is what I call engineer's porn...
Blenkinsop999 1 month ago
@ 10:41 oh my sweet jesus. what id give to be standing where those guys were in the grass.
ilovegoatsecks 1 month ago
@ilovegoatsecks I've tried so many times, but there is no way to describe it. My videos are an attempt to deliver the next best thing.
AgentJayZ 1 month ago
awsome work guys
jasons757 2 months ago
10:42 is when it really starts...
MrJp990 2 months ago
I was just curious. How much does a j79 go for ? Also are there any PW j75 still around ?
P71CVPI07AZ 2 months ago
@P71CVPI07AZ All J79s are used, and like used cars, price depends on condition.
As unrepairable scrap they go for a the price of a decent car. In new condition with all accessories, one will run you into new supercar territory.
Whatever you need; if we don't have it, we'll build it.
AgentJayZ 2 months ago
I sooooo wish I had a job like this :)
TheMan1510 2 months ago 3
why the white smoke during early run up? and just after shut down? and so how does the fuel ignite so well in the afterburner? you'd think it'd be being mixed with air that has already burned and wouldnt have too much oxygen left in it to burn? Idk lol
AMAZING VIDEO! almost pooped myself at 7:14
DiamondPilotDan 2 months ago
@DiamondPilotDan Only a fraction of the oxygen passing through the engine is consumed even at full military power, so there is plenty left over to feed the afterburner. If the engine burned most of the oxygen passing through it, it would get so hot that the interior would melt. Because an afterburner is at the tail end of the engine, the engine can get some more power from that leftover oxygen without heating up its interior too much.
colindhowell 1 month ago
Cant believe the tripod wasnt at least knocked over. It must of just been out of the main jet blast area otherwise it would of ended up in my back garden in the UK!!
xxJohn1977xx 2 months ago
Hey, what Type of J 79 is it ? 11A or J1K or which one ? Greetings Logoflieger
Logoflieger 2 months ago
@Logoflieger As identified last month by axkaxl, it's a J1E.
AgentJayZ 2 months ago
what does the spark in the back of the engine for? igniting the fuel?
houshidar558 3 months ago
@houshidar558 Yes, it's for igniting the fuel used by the afterburner.
AgentJayZ 3 months ago
WOW - just awsome - thanks for sharing some footage of a running J-79.
Never seen a running one one that close. Just amazing!
HIGGI6 3 months ago
OMG that is AWESOME!!! I wanna see one in person!!! God that is violent. How do I get to watch a test?
GoodBadUglyest 3 months ago
you should have take one shot something like 1 mile away, so we could have hear real tone of sound, cameras shatter so much that close
ERK77VI 3 months ago
@ERK77VI Good idea, but all the camera work is done by me, and the cameras shut off after ten minutes.
If I could travel at light speed, and leap tall buildings, I could get that shot.
Afterburner tests are a big deal for me, and they happen every two years or so. Next one I may have a second unit.
AgentJayZ 3 months ago
Two of this of F-4 phantom !!
multicolla 3 months ago
@AgentJayZ every afterburner I have seen is electrically ignited except the J58 which uses trietylborane, a chemical, to ignite it. Why does it require a chemical ignition system vs. electrical?
tranceaddict704 4 months ago
@tranceaddict704 The J79 requires a torch ignitor, fuelled by Jet-A and initially set off by a high energy spark.
The J58 requires a torch ignitor, fuelled by triethylborane and initially set off by a high energy spark.
It needed an extremely violent source of ignition to make sure the fuel would ignite in the harshest of conditions : travelling at supersonic speed in the thin air at maybe 80,000 ft and at temperatures of -80F, give or take.
AgentJayZ 4 months ago
I swear! I think I might look more into being a jet engine mech, because every day I go to plane spot at MSP. The things that I love to hear see and wish I could touch are the engines! I ordered a JT8D C-1 Fan blade just for pure satisfaction of owning a part of an engine that will soon be a rare sight across the world.
I tell you jay, one of the days that I have enough money saved up I will make the trip to FSJ!
Helicopterpilot16 4 months ago in playlist More videos from AgentJayZ
Top engine for F 104 starfighter.
telosfd 4 months ago
@telosfd It's a close relative, but this engine wqas manufactured under license for use in a different aircraft.
AgentJayZ 4 months ago
@AgentJayZ We use it in F104G or TF and in F-4 fantom with small differences. I remember in the left side of the engine was a box wich controled the blades in case of smoke when guns was in action. Are you in the airforce there or something?
telosfd 4 months ago
@telosfd Yes! ... definitely the or something thing...
AgentJayZ 4 months ago
Very nice video! Reminds me of old days :) it's a J79-J1E the engine for the IAI Kfir. i had more than one thousand engine runs in my log book :) I still remember all parameters limitations by heart. and BTW yuor engine burns oil probably from # 3 bearing scavenge pump/tube.
axkaxl 4 months ago
@axkaxl Yes. You've done a lot more of these engines than I have !
AgentJayZ 4 months ago
Jayz do u sell frontrow testing tickets????
janssen70 4 months ago
@janssen70 yes
AgentJayZ 4 months ago
Bravissimo e complimenti !! Spettacolare
multicolla 5 months ago
that's one fierce jet engine
ZorgDK 5 months ago in playlist More videos from AgentJayZ
thanks for watch?nooooooooo thanks you man
lucianosr71 5 months ago 14
@lucianosr71 I make these videos for you guys... ...well, really I guess I do it for me, but thanks !
AgentJayZ 5 months ago
Simply fucking awesome :D
mobius1aic 6 months ago
That's an amazing video. Thank you so much for it. You should get in touch with cannon. They'd be thrilled to endorse you :).
bassplayer8718 6 months ago
Were do you guys acquire these J-79 Turbojets at ? Does AMRC out at DM AFB in Arizona sell them to you ? Great Video When I was in the USAF I worked on the PW F-100.
Jhorak101 6 months ago
@Jhorak101 The sources are dwindling, so they are ever more difficult to obtain.
AgentJayZ 5 months ago
Until you see one of these babies in full a/b on the cats it is impossiblet to appreciate the power, sound, and fury these engines produce. I worked on RA5Cs in the early 1970s. It's an honor to have been a Cat Checker with RVAH12 so I could see it (and feel it) first hand. Fly Navy.
smoobooty 7 months ago 2
AgentJayZ, can you please describe what is going on with the exhaust nozzle during the testing? Does the throttle change when it narrows? I understand the nozzle opens during A/B for cooling correct?
hunterhalo2 7 months ago
@hunterhalo2 No , and no. in a nutshell, the area of the exhaust nozzle is adjusted to maximize the acceleration of the exhaust gases to provide forward thrust. Since the afterburner adds a small amount of mass (fuel) and a lot of heat to the exhaust gases, they are larger in volume. So they are accelerated best through a larger orifice.
How the engine controls this I'm a bit rusty on. There is a lot of emphasis placed on temp. If the AB isn't lit... the nozzle isn't fooled into opening.
AgentJayZ 7 months ago
@hunterhalo2 Cooling has nothing to do with nozzle position.
AgentJayZ 7 months ago
Congratulations for this amazing video. It's also very usefull for teaching. It will be interesting if you show how you can check the power of this engines.
pedroloja1 7 months ago
Looks like Sci-Fi
XXTARIX 7 months ago
Hi JayZ, I'm amazed that the central thrust bearing can keep the shaft from ripping itself right out of the engine case (I guess thats why it costs $25,000) or for that matter that the test stand can hold the engine back! You have the coolest job!
I've been working on the design of a 6 person HPV to set a land speed record. So far I haven't seen anything like what I want to build but you have all the parts and I'd be happy to have you help pedal it if and when! Mark
mwroush 7 months ago
@mwroush Cool. I'll bet a well-streamlined 6 person bike could hit 150 Km/h or more.
AgentJayZ 7 months ago
WHAT A RIDE!!!
porousorifice 8 months ago
Hey Jay Z, where's your cat? I didn't think that this sound good for his sensitive little ears :)
SkyGaruda 8 months ago
@SkyGaruda Not my cat... Shop Cat. Shop is a mile away from the test cell.
No cats were harmed in the making of this video... despite all the requests we get.
AgentJayZ 8 months ago
Wow! At 14:15, I could have sworn I detected a whiff of kerosene wafting from my laptop cooling fan.
rickey5353 8 months ago 6
We used to get Concorde into Liverpool airport every year on charter for the races at Aintree. There is a road that runs right behind the runway threshold and when she used to light up all four of the burners you'd be hanging off the fence with all sorts of rubbish hitting your face. What an experience, I'll never forget it.
FrontSideBus 8 months ago
simply the best thing ever, watched it 5 times now, the way it powers up is awesome, good job as always
DavoCitizen 8 months ago
wow.. how much did you spent on the jetfuel for this test?
izaatmusic 8 months ago
@izaatmusic It burns over 80 gallons US per minute in afterburner. Jet A was 1.60CDN per litre the day of this test. US /CDN gallons... US/CDN dollars.... that works out to - a lot !
AgentJayZ 8 months ago
My hard drive camcorder usually shuts down when filming a afterburner, poor thing.
Wonkabar007 8 months ago
@Wonkabar007 I had the HDD and the DVD cameras die on me while filming, which is why I went looking for cameras with no moving parts. Up until the SD cameras, the only reliable ones were tape-based camcorders.
For a while I was thinking about breaking out the full-size VHS shoulder-top Panasonic...
AgentJayZ 8 months ago
I just can´t resist watching your monster videos buddy !
marcosaba360 8 months ago
Jolly good show ol' chap.
LarryCanFly 8 months ago
I love the way that your internal organs vibrate and you get pummelled by sound waves when an aircraft goes into full reheat right over your head in a vertical climb...:)
FrontSideBus 8 months ago
Pleeease keep loading videos this is really intriguing! Really appreciate you taking the time to shoot and show us this footage we know how busy you must get! Thanks heaps!
navneet349 8 months ago
I've been about 300' from a B-1B in full afterburner (at night!) and it was an experience that I'll never forget. The sense of power is humbling.
oisiaa 8 months ago
@oisiaa I had the same thing happen to me at Nellis AFB. I was standing near the end of the run way, and then I see the 4 afterburner's flame trails from a B1 that was coming straight for me. It took off, pointed the exhaust straight at me. Nothing could have prepared me for the noise I was about to hear, no FEEL. The ground was shaking, and my eyes were tearing up it was so loud. I want, no... NEED an afterburner for my jet engine.
Fierobsessed 8 months ago
@oisiaa mee to a few years ago when a B-1 departed from the RIAT @ Fairford. my camera couldn't take that much viberation and shut itself down.
Vipers810 8 months ago
@oisiaa, I too had a similar experience with the B-1. After a fly over shaking everything in my house, I got outside quick enough just to catch a glimpse of the aircraft and to witness what sounded like every car alarm in my entire neighborhood going off all at once. I've never seen or heard anything like that before. :)
NoWattz 8 months ago
HI JayZ.... Ian from Australia, I have just spent a couple of productive days going through all 136 Video's fantastic stuff.
Just a quick question on the Turbo Fan engine,
Is the fan direct coupled to teh comporessor/turbine shaft or do they run from a free power turbine?
gidge348 8 months ago
@gidge348 I think I mention in the video that it is a GE CF6. It is a two-shaft engine. The 16 stage hi-pressure compressor is driven by a two stage hi-pressure turbine. The "fan" is actually a two-stage lo-pressure compressor, the first stage of which is much enlarged to move much more air than can be fed into the HP compressor. The LP compressor is powered by a 5 stage LP turbine.
This would be called a free power turbine if it simply drove a shaft.
AgentJayZ 8 months ago
@gidge348 By convention, if an LP turbine is used to drive an LP compressor ( also known as a fan if it is enlarged to "bypass some of its output air around the fuel-burning core" ), then it is called an LP turbine.
If the LP turbine delivers its power via a shaft to some external load, like a helicopter transmission or an electrical generator, or even a reduction gear of a turboprop, then it is called a free power turbine.
AgentJayZ 8 months ago
@AgentJayZ Thanks for that great explanation. One more quick question how much of the power produced by the engine would be transferred to the compressor/fan shaft and would it be feasible to use that shaft with the fan removed to run say a ground based generator?
gidge348 8 months ago
@gidge348 You've got some good ideas... so good you've just invented what GE did some years back. They took the fan off their highly successful CF6-6, and used the LP (fan) turbine to drive a shaft... which could drive anything. They called this machine the LM2500, and it is their most successful industrial engine. It has a 90% parts commonality with the CF6-6.
AgentJayZ 8 months ago
@gidge348 All of them in a row?
If you tell me which was your favorite, and which one you hated most, I think that'll qualify you for a VDI...
AgentJayZ 8 months ago
@AgentJayZ Hi Jayz
It is hard to say what I was my favourite and what wasn’t (I can’t say I “hated” any of them)
The clips I liked the most was probably the detail ones where you are doing a job, lock wiring, rebuilding a seal, checking a bearing etc.
The least favourite were probably some of the plain (no after burner) test cell runs as I think a video cannot do justice to the pure power and energy standing next to one of these monsters at full noise.
gidge348 8 months ago 2
@AgentJayZ I am building a salt lake racer for Australia with a tiny (by comparison) RR Nimbus (about 1000shp) with a modified power output section.
gidge348 8 months ago
I guess I am just dreaming but the questions about CF6-6 & LM2500 were that.....just say someone built a car like Thrust SSC with 2 x LM2500’s driving diffs and a front drive axle making it wheel driven. Thrust SSC is obviously a stable high speed shape and the wheel driven record is “only” 458.196mph........ Oh well all I need is a spare 10 Million dollars...... no problems....
gidge348 8 months ago
@AgentJayZ
I'd like to take this opportunity to say that the entire collection is most interesting as well as educational. Thank you for sharing the knowledge and the time taken in documentaries.
I as well like others here appreciate the videos where you show us the details of operation, assembly, materials and components and the recommendations of the manuals!
Don't stop!
zaruraz 8 months ago
Amazing!! And the camera adds so much to this video as well. Gives us a true sense of the sound. I would be curious how much (or if) the barometric pressure increases where the spectators are standing. Great stuff Jay!
rc300xs 8 months ago
jaw dropped hard at the size of that thing ,excitement folowed . nice one
DARKJURNEY 8 months ago
Great close-up of the A/B, just need a longer lens so you can move the camera farther back so it wont vibrate as much. One of my buds in power plants offered me to go watch them test a F404 engine and I was wondering if the vibration would ruin my Canon T1i or the lens. Good selling point for canon though, im surprised the little point-and-shoot survived!
JetAce08 8 months ago
How often do you have to inspect the mounting points into the floor of the shop? As fun as it sounds, having one of these things go on an unannounced tour of the Peace Country would not be good.
Will you guys ever entertain the idea of an open house where the public could go out and see a live test or would the liability be too much?
Anyways keep up the excellent videos.
nw843x 8 months ago
@nw843x The skid is welded to 8 inch diameter steel pilings that are driven 16 feet into the ground. The floor was poured around them.
If you're in the area, give us a call. We have a safety orientation, and designated observation areas.
Price of admission to be negotiated.
AgentJayZ 8 months ago
Hello there! Carlos from Sweden really amazing videos you have.. I'm really interested in watch two things ... one, how the engine starts? and two can you show me the reverse thrust of any jet engine? How it work? Thanks
carlosmax50 8 months ago
@carlosmax50 I have a video about the start cart, and a video of how to start a jet engine.
We don't work with or test any sort of thrust reversing system. An excellent source of information is a book called "aircraft gas turbine powerplants" published by Jeppeson.
AgentJayZ 8 months ago
Wooooo...hooooo
Incredible thrust!
Great stuff!
MusicMan20061210 8 months ago
A proper jet this is. Wow. The variable nozzle with afterburning is the cherry ontop.
MrHaun 8 months ago
The white smoke coming out he back of the engine, is that unburned fuel? If the afterburner is turned on when there is a big dense cloud of that smoke wouldn't it ignite?
saxonlight 8 months ago
@saxonlight Yes, that is a mist of fuel, and for reasons I'm not clear on... it is extremely difficult to ignite. The reason the engine has a torch ignitor, spitting flame into the afterburner duct, is that simply adding a spark to this mist of air and flame does not always result in combustion.
AgentJayZ 8 months ago
@AgentJayZ I think you are right there. I have seen similar clouds during jet car exhibitions and have always thought the jet cars afterburner ignited the cloud but in looking just now at a few jet car videos it looks like the afterburner simply helps blow the cloud out the way faster and the ignition I have seen previously is really raw fuel being dumped into the afterburner for a more dramatic effect. Thanks for reply BTW and again for all the videos, very interesting and educational. =)
saxonlight 8 months ago
Wow, brings back memories of watching the F-4's operate out of Homestead AFB when I was a kid. Spec-f'ing-tacular to see this engine operate close-up like this. Much thanks for the video (and all the others!).
mekman 8 months ago
That was superb. I'm surprised the non-afterburning part responds so quickly to power changes; I guess there's not as much inertia as I expected.
blobusus 8 months ago
@blobusus The rotating assembly weighs about 1500 lbs, but it's a mighty powerful engine !
AgentJayZ 8 months ago
I miss the famous howl. :P
Vipers810 8 months ago
this is simply stunning!! I love the sound of this engine! thanks a lot for sharing!
WolfenGeist 8 months ago 2
Fantastic i like it when camera shake when engine accelerated at the full throttle i can clearly see the VIGV move when the engine accelerating
AugmentedB737 8 months ago
The shaking camera really does help where the microphone can't. Looked like a hurricane was happening outside... I'd pay cash to see one of these tests in person. Just awesome!
poppyopi 8 months ago
Nice one Jay. Cheers.
matube73 8 months ago
What kind of extra hp do you get with the afterburner on full whack?
1metiz 8 months ago
@1metiz about 50% more thrust, and fuel consumption goes up 100%
AgentJayZ 8 months ago
Simply amazing. It was like watching a movie. Or rather it had me hooked like I was watching a movie.
TeslaWasHere 8 months ago
Nice. A proper afterburner with a variable nozzle. I like the howl that the J79 makes. Would sound even better on reheat. I can't even imagine how loud it would be.
scrfce123 8 months ago
cool! thumbs up
Geomanb 8 months ago
Another great video. I know how loud these things are as in my teens I was in the air training corps, and we went and watched a super sabre test its afterburner and we were about 20 feet away
JOOLZNED 8 months ago