Testing a Starfighter Engine
ฝัง
- เผยแพร่เมื่อ 17 เม.ย. 2012
- Our GE J79-19 turbojet, out of an Italian air force Starfighter, being put through its paces, and burning several hundred gallons of sweet Jet-A in the process.
My rear-engine camera was blown down the field, rescued and put on intake monitoring duty. It still couldn't keep still. I held my main camera, standing as close as I dared to the afterburner nozzle, and my knees actually buckled a bit every time it lit off.
This engine makes some smoke because it has standard combustors (see my combustor videos), and passed the test with ease. It ran like a Swiss watch, er... like an Italian turbojet !
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Thanks! - ยานยนต์และพาหนะ
The afteburner shipping container was signed on the outside with felt pen in a very fancy script. I think the name is Dino, or Gino, and it also says "Bye Bye with love from Napoli (Naples) "
There is also another name I can't make it out.
These guys obviously hoped their engine would come to a good home. I hope they have seen this video of it running once again !
How to deal with snow on the front yard like a boss!
thats a 2 stroke jet engine
4:50 you can see the stator vanes move to WFO. Then the second time I watched it I noticed the variable vane actuators moving too. Turbines are so cool.
they are meant to be cool brow :)
8:02 what we all wanted
Loved this video, you are always professional yet we can visually see you enjoying yourself and really know your stuff!
Great videos. I really like that "near-supersonic freight train of air" !
We've had some trouble getting the afterburner ignitor to work in the past, but recently all of our J79s have ran very well. It's kind of our job to get things working properly...
Wow! I love this series of videos of the J79 and love that engine. I was born not too far from one of the italian AFBs where the starfighter was used so its noise is hard-coded in my memory.Thanks for sharing. You brought me back in time by many years when starfighters were still flying in Italy.
Simply amazing! That jet has played a huge part of my fascination with aviation growing up as a kid and watching this test is wicked awesome! Thanks for sharing all that you do :D
Excellent..I now have a new appreciation for the forces at play.. Thx so much. I used to go to the Jet base here in Sydney Australia 3 times a week in the 90`s repairing the microfilm equipment that the service information was stored on. It was always a buz and over a 5 year period got to see a lot and learned a lot.. I really appreciate the efforts you`ve gone to film and explain all aspects of jet engines workings / repair / servicing..It brings back a lot of good memories. Cheers
That is the most brutal jet sound that I ever heard. The power and the technology of the jet engine is the reason why I love Jet Technology. One fine job Jay. Good job. And thank you for the information you shared on all of your videos and I enjoy watching them. Wishing for more videos. Thank you.
That was a great run up, to be there in person up close must be amazing. I have seen a couple of Starfighters at an Airshow one year do a few flyby's, great sound and like no other. Watched a few of you run ups, your crew seems to know where and were not to be during test, makes it easier and safer with good people around. Nice "Secret" test center to. Keep up the good work
Just wanted to say this is an excellent site for videos GT engines ... You are so detailed and informative in your videos describing the engineering aspects of these incredible pieces of mechanical workmanship.
I literally spent hours going through your videos, awesome job and so much said for "a days work" ... Keep up the good job! I'm not an airline mechanic but have always been fascinated by these machines since my teen years. People like you that keep the world connected via jet aviation.
In my opinion this is one of the best test run videos that you have posted. That thing looks like it shakes the whole earth.
Awesome, this kind of raw power, i could listen to it the whole day
That scream is something I never quite get used to, but I always love hearing it.
My God! It still to the day gives me goosebumps listening to a jet spool. Wow!
Fabulous video! Thanks @AgentJayZ
That's pretty cool! I'll have to check out more of your videos!
Jay your videos are the best, thanks again! Those were some sexy looking burner lights. I love watching those IGVs moving as well.
Very nicely put together.
Good job.
I certainly hope I'm not the only one who finds afterburners really rather pretty.
Fantastic video Jay, thanks for taking the time to make and post it.
Man, hat you do...IS INSANELY AWESOME WORK!🙏🇺🇸💪
Not just any favorite mind you; this one ranks in my fav o' favs! Nice work, Mr. AgentJayZ, sir!!!
Pure power!! Amazing to see it up close with reheat
This turbine is located directly behind the stage 1 nozzle, which itself is directly behind the combustors.
S&S Turbines is an independent gas turbine overhaul company. We have made donations to and presentations at various technical institutes.
The sheer sound intoxicates you.great stuff.
Thank you for being one of the very few people who know which way to spell sheer for this application.
Thanks a lot that is exactly what I was after, sorry I hadn't noticed this vid before I posted the question. Great videos!
Thanks for the infos and your hard work, Jay
It is amazing to see someone on the back side of this technology. I work for the companies that invent, produce and send it to people like you. Very impressive, and good education for the viewers. Keep it up!!
The sound of that starting cart, we called them "dash" 60's, brings back fond memories as a flightline F16 mechanic in the early 80's at Luke AFB.
Awesome !!! The water utility I work for had 2 jet engines as backup power to run the plant they use to run them during scheduled P/M What an awesome sound
so that's how the F104 was so fast, cool job you guys have, thanks mike
Rib cage rattling, trouser flapping and concrete shaking power!!! I love jet engines test runs whether its a small model jet to a monster Rolls Royce Trent 970.
Keep up the good work fellas
First time I noticed those I think inlets open and close. Nice video !
What a amazing machine, I couldn't imagine being attached to that thing, lol
The F104 intake is on both sides of the aircraft, and forms a bifurcated duct at the engine face. The central wall or strut in front of the engine contains the air supply connection which attaches to the air starter in the nose.
We have simply replaced the aircraft with a 4ft pipe.
Thanks for the cool Video . I can smell the exhaust Yumm This was the first engine I pulled from a F4 phantom Installed and started up . Love the Raw power J79 F4s were bad ass loud !! Pratt Whitney at Navy A school Millington Tn .
Moved on to A7e Corsaire II TF41 RR Allison. to FA18 f404. Its In the Blood . The New F22 Raptor Is one loud Bird.
Thank you for the videos, Agent.
Very informative...
of course it smokes... its a J79.
what a beast!
Love watching these videos although I do not read and write well I have a mechanical mind which is starving for this kind of stuff. Love the lockwire video to. I met a soon-to-be aircraft mechanic and shared you're amazing videos. Sincerely a fan for life.
Thanks for sharing. I admit I perhaps don't get out enough but I don't know of anything quite as exhilarating as a jet engine in full reheat.
I love it when the airflow starts pulling the asphalt up. While I'm a little spooked about the risks you guys took (sorry, I noticed the proximity to flying debris and parts of the door struggling and couldn't help but think of the $2,000 bill for the Jet-A), my hat is off to the awesomeness of the video overall. Very jealous of the setup. :)
Absolutely a beautiful site and sound. I'm a Century Series Air Force brat having grown up around these dragons in their prime.
i get real frustrated some times ,to the point music cant help but whilst watching these engines
i always feel myself getting calmer and by the end always have a massive smile on my face.
Medicinal levels of awesome
What a wonderful old school engine! I would love to see a few of the new ones run up on a channel some day.
When everything is working as it should, the transition to AB is a smooth and massive increase in noise, but there is no boom. When the AB kicks in with a bang... adjustments are called for !
I had the pleasure of being aft fire watch with two of those in a F4 running full afterburner. Between the vibration and the air being sucked down the hush house tube I had to keep walking backwards to stay in place. That was intense. It was mid 80's Spanghahlem AFB in Germany.
Anyway, thanks for posting these. Also thank the president of the company for allowing you to do so. Some places are very cagey about even seeing the inside of their shop, let alone film what goes on inside. It's one thing to read about how turbines work and are asembled, but sometimes I need to see an action performed to really understand. With you demeanor on camera, and your knowledge, I think you would make an excellent teacher. Again, thank you.
That's a simple toggle switch that has been used for many purposes, but this time we've configured it to supply electric power to the afterburner ignitor.
Normally, activation of the ignitor is integrated with the throttle handle in the cockpit.
Here we manually control it.
The labels you see are leftovers from when it was used for other purposes.
great engine run .
great VIDEOS.
It is as it leaves the engine, and it slows down as it moves further away. Mixing with the ambient air with great turbulence and noise.
It's cool to see the old style combustors at work, :)ole smokey!
The Starfighter is a small plane, and the J79 is a thirsty engine. I think all the fuel will be used up in about ten minutes using full AB. Maybe 20 minutes at max military without AB.
Range is always a concern with jet fighters. An aerial tanker is your best friend !
Great videos of yours. I am a teacher at a norwegian college, and we have an aeronautical program besides the more standard ones. Avionautics, engine, body etc. I get to teach a bunch of very talented students from this program in the regular subjects- norwegian, geography, social science , history.. And they have the benefit of having a teatcher at least as interested in their majors as them selves, being a complete nerd for flying and all that goes in to it. Thanks for the vids!
We have one of these engines at RAF Manston History museum in Kent, England. It has all of the actuators and nozzle gear still on it. All it needs now is some wheels and a seat.
I would like one of these to piss my neighbours off.
Blow away their entire house with it
yeah it only costs 956,466$ thats it
Ceranium Hunter no big deal. only the cost of their house. Well worth it👍
It would do more than just piss them off.....! ;)
They might like turbine engines too... Just play nyan cat on 10hr loop with external speakers
i love how the flames come out when the after burner is activated.
You got to have one of the coolest jobs in the world. I truly envy you. Good video.
Hydraulic rams are driven by fuel pressure and engine rpm. The fuel pressure is modulated by the fuel control, which senses throttle position, engine rpm, and inlet air temp. The fuel pressure is what determines how much fuel sprays into the combustors, the position of the ram that sets the angle of the variable stators. In front of the first stage of compression, and directly connected to the same actuating ram, are the variable inlet guide vanes.
The real engineering here is the cradle holding steady and not launching itself to uranus Hahaha
Does it get any better than this! Love that AB!
It was the Canon SD1400is I showcased in the last J79 video. It was definitely on its first jet-powered voyage. It was positioned about 100 yards away, and then was blown away.
The afterburner increases the temperature, and therefore the volume, of the exhaust gases. A greater volume of gas flowing out of the engine requires a larger nozzle area to provide maximum acceleration as it leaves the engine. This acceleration of exhaust flowing backwards causes a force that pushes the engine forwards.
You are correct. For instance the GE F414 in the Super Hornets at MAX has an exhaust velocity of over 800kts @ 10ft from the VEN's, burning at 2000F. But the actual factors of speed come into play with thrust, thrust to weight and aerodynamics which can transfer (or make the thrust more efficient, "transferring" the power better to move the aircraft through the air) or enable more speed through efficient aerodynamics.
That dude in front of the intake :)... the noise is INSANE! :)
The air-turbine starter is in the nose bullet. It is fed the compressed air that powers it via that hose, from the start cart.
Cool stuff, Z.
Not surprising I guess, but a damn shame. That would look fantastic at night!
Yet another amazing video, AgentJayZ. I'll never get bored of these. I always watch them as soon as I notice they've been posted and I'm never disappointed. Got any footage from the camera as it went for its little journey down the field? :)
Awesome! Thanks for the info. Just found your channel. Fascinating! :)
Truly amazing, thank you
And this is why I subscribed to AngentJayZ !!!!! Cooooool video thankyou =)
we used JP-4 in the USAF back in the '80s. That was some nasty stuff. High vapor pressure, very volatile. As you know the loudest part of the engines (to me anyway) is the front. Two of the most ear piercing engines I ever encountered were the P&W F100s in the F-16 and whatever engines were in the T-37. Idling down the ramp those things would make a squeal most humans could not tolerate without ear protection. Anyway, cool vid.
You can't tolerate them, until you do hahahaha.
I was a crew chief on the F4 during the 1980's and worked end of runway for a time. Nothing like TWO J79's in full afterburner upon takeoff. Some of the best times of my life.
Thanks very much, have a nice day.
Thank you.Great video.
the f104 j79 engine is still one of the best there is...easily..love this aircraft
And as always, have nice day.
Awesome! By the way at 0:46 you can see Microtecnica on the label near the indicator. This is an Italian precision equipment manufacturer based in Turin.
The combustor is the hardest part of an engine to design. Through continuous engineering effort, combustors have steadily gotten more efficient all through the years from the first turbine engines.
There are actually two different combustor liner designs for the J79: the original, which left a black, smokey trail in the sky, and the newer "lo-smoke", which mostly eliminated the problem.
At around the 4 minute mark in this video, it's obvious which liners are in this engine...
God Almighty what a beautiful thing! When the afterburner kicks on, it is like staring into the maw of a Balrog of Morgoth...
The neighbours must love you guys! :D
This must be a fantastic opportunity to be able to walk around a running turbo-jet engine. It would be interesting to see the vane actuators moving as the engine runs.
I've got several test videos of the J79 where I have closeup shots of the actuators and linkages moving.
I suggest you watch all of my J79 vides, so you don't miss any VSV action.
The J79 did power the land speed record holder until Richard Noble stepped in with the Avon powered Thrust 2, and then the current record holder, the twin Spey powered Thrust SSC.
I love the sound of Starfighter engines, better than music!!
Used to pull those out of the F4's a very long time ago..great engines, smokey as hell though..
+CaptAmericaUSAF So you know things many viewers want to know...
Did you install, or only remove?
I want to complement you on your videos Jay, I enjoy watching them..Licensed A&P, Been a jet engine mechanic over 30+ years, since early 1980's Jay, In the commercial world and military.... Worked on P&W/ GE/ RR commercial engines, military engines and gas turbines as well, (Lycoming T53/ T55 and Allison 250's, GE T700's).... I don't recall any Westinghouse) ....I removed, tear-down, rebuilt 100% if need be, re-assembled and installed, either in a cell or on-wing. I also ran or assisted in operational checks. Besides the military (several branches over 4 decades), I have worked for P&W and several O&R depots in my civilian life.. Only thing I never worked on was rocket engines...lol. Putting a little guy on a go-kart in near future
That charcteristic smoke trail is why the german airforce called theire f4s "airforce diesel" or "flying oil stove"...
My father (still in service but not a flight operations sergent anymore) told me that the engines could accualy run "cleaner" without that smoke trail with diffrent fuel injection settings but that would have caused segnificantly higher wear so they continued to run the engines "dirty" and with more oil for lubrication.
You are misinformed. The smoke is not caused by oil consumption. The smoke can not be adjusted out. There is a modification made to the later engines marques, that can be retrofitted to most any J79. It consists of different fuel nozzles and different combustor liners, designed to acheive a more efficient combustion of the fuel. These parts are often called the Lo-Smoke kit, and are used by all industrial LM1500s. I only have a couple of videos where we are running the "standard cans" ( as opposed to low-smoke)... see if you can find them.
I read a book by a USAF Phantom pilot in Vietnam who describes the smoke trail as bad news because of increased detectability. The solution they adopted was to use first afterburner setting which caused the smoke to disappear and air brakes to keep the speed in the desired range. The penalty, of course, was increased fuel consumption and reduced loiter time/contingency reserve. So this expedient was restricted to the high risk phase of the flight.
They are actively controlled based on jet pipe temp and throttle position. As shown in my nozzle test video, they are positioned by hydraulic actuators.
Thanx a lot for very precise answer! Cheers
Love it. That thing is alive and well worth $500 a minute.
can't even imagine the acceleration of the starfighter been built around of this beast.
I ones attended a demonstration of a special fire truck that uses two of those things to literally blow out fires with the water it injects into the exhaust stream. That's really impressive.
NeoDerGrose that's cool dude, what was the truck called
This engine redlines at 7800rpm, but the normal max is 7450. The rundown time is measured, and used as a rough indicator of overall engine condition. From fuel cutoff at idle, we look for at least 3 min 15 sec until the rotor stops moving.
This engine took over 4 min.
We are the people you send your turbine engine to when it needs work. S&S Turbines did the work on this engine, and specializes in GE engines.
Maddex Turbines owns the test cell, and they specialize in Rolls Royce engines.
Jet City Turbines specializes in experimental and military aviation engines, as well as low-volume projects.
All three companies work closely together in Fort St. John, BC... Canada.
A book I always recommend is "The Jet Engine" by Rolls Royce
HI j, happy new year btw, hope things are well in JC. What was the max thrust you measured on this test? what year was that engine made? Do the edges of that door opening get warm at all? How much thrust is that test stand designed to take? Looks bit weak I thought. Haha. The cable loops are to hold sections together in case something lets go, is that correct? Bob.
As I have mentioned here and there... the fuel consumption of one J79 -19 running in full afterburner is between 85 and 90 gallons per minute.
Between 35 and 40 without afterburner.
What's that you say ?
Is that US gallons or Imperial ?
...does it really matter ?
Modern engines are low-bypass turbofans, so they have much more oxygen in their "exhaust gases", which is where the fuel is introduce for the afterburner.
The J79, being a pure turbojet, has lower O2 content in its exhaust, so maybe that's the reason the flame is more red/orange/pink.
Amazing! Great fun! Thanks for putting this up! :)
And today, our neighbors in the North Pole area are saying that it's too cold up there, so we've pointed our jet exhaust North and we're going to send them some warm air to make their life more comfortable : - )
Jay I love ur vids!! I always have been fascinated with jet engines and how they work. Another thing I love is how you go to great lengths to describe and show the parts of the engines and how they interact. Ur boss is well...BAWSS! He lets you make this TH-cam show and even cameos so that is soooo win! Keep up the good work!!
Ps: I want a smaller compressor blade that I can have as a display item cos dey look so cool!!!(never gonna happen :3) oh well! XD
thanks for the info mate!
ive never seen an F104 with a -19 'long nozzle' :s
breathtaking