Turbine Blading - J47 Turbojet 

Retired USAF Jet Mech here. Love the video. Brings back memories of many many days of detail work in the shop. Jet engine maintenance is a whole different level of mechanic work. Everything must be just so or it is no go. Very little acceptance for deviation from specs or procedures. Part of me misses that work... another larger part of me is glad I do not have to do that work anymore. Countless days going home still smelling like jet fuel wears on ones soul. Thank you for the video. Hope to see more. Work safe, work carefully, work smart, and keep them working.

OMG....07:47 You inserted blades 88-68-90 instead of 88-89-90! Black humor - never gets old. Sorry for that... What a great opportunity for us to have a look at those finely executed operations. Thank you!

Content like this is exactly why youtube is so amazing. The internet is the revolution.

Excellent taste in music, sir.

*Thank you, Jay!* I *LOVE* this level of detail! While others might think this is mind numbing, you have over 100K viewers who are absolutely fascinated with it. Thanks again for all you do!

Ok, last few seconds was the icing on the cake. Thanks for showing us how it's done. I never tire of watching a pro at work as you describe in layman's terms how this amazing technology works.

There's something wrong with me I find these videos fascinating. Although I don't work on turbine engines I like working on my airplane, cars, motorcycles. There's lessons to be learned here about tools, organization cross-checking, general quality control that applies to all mechanical work.

I have no words for you Jay, or many praising words. Its an unbelievable task to accomplish. how the hell do they even design these things anyways?. Its absolutely mind boggling.

When you make perfection look easy you know it's not. Great vid.

The turbine rotor disk has a Timken 16-25-6 alloy rim TIG welded to an AMS 4340 steel hub to provide higher strength at the flowpath.

Legend has it he is still finding anti seize smudges in random places.

The algorithm did me a solid on this one hell I wouldn't even know what to search for You've got yourself a new stalker

I'm enjoying each series of videos on each of the engines and their various overhaul processes. They're more meaningful than videos that show a snippet of the overall process.

Just ran across your videos a day ago. I got to tell you I am absolutely hooked and can’t stop watching. I can tell you are a man who loves his work. Skills of a surgeon, patience of a saint. In a laymen’s words I understand the general theory of a jet turbine, but have gained an immense amount of knowledge into the intricacies of the finer details that make it all work. As a 40 yr veteran in HVAC and smithy, plus a fairly accomplished fine carpenter, I’m can really appreciate your skill set and overall mindset of perfection. Not a business for hamfisted bulls in a china closet. As a child well into adulthood I was privileged to have a father who was a private pilot for 30+ years which grew my love of aviation. That and living in Wichita Kansas, I’m surrounded by many friends and neighbors who are in the aviation industry. My neighbor next door was a B1 pilot and the neighbor across the street is a certified aviation power plant mechanic, plus my nephew is a F18 pilot. My own son worked on Citations at Cessna. On my trip to DC my first stop was the Aero Space Museum. I never grow tired of learning, so thank you for sharing your videos.

Your videos are great! "No sticky. Sticky. No sticky. Sticky." You're educational and entertaining. Thank you!

I’m getting my A&P license in April so glad I found your channel ! Love seeing stuff like this so I can use out in the field

This really rejuvenated my hot end.

This was oddly satisfying to watch. Patience and dedication.

Stumbled onto this feed. Subscribed

I used to come here for the knowledge, now I just can't stop thinking about the Boss. One of the cuteste dogs I've seen

This is so cool! I am going to ERAU to become an Aviation Maintenance Technician and I am so glad that I discovered your channel today so I am a step ahead for college!

Thank you, I’m studying mechanical engineering with a concentration in Aeronautics (mostly) and Aerospace in a university that is sadly not certified under the FAA, so I’ll be doing design work (CAD) and what not. I could swear that watching your videos gives me life and keeps me motivated, wish we could get exposed to this type of training!

Watching a screaming turbojet doing its thing, It's amazing that all the hot gas has to pass through these narrow passages between the guide vanes.

this is fascinating, nice work.

The boss is very happy and satisfied !

That roll pin punch is a lifesaver

Sir thank you very much for your awesome videos of turbojet engines

great music choice to listen to while working

Before you even played the music at the end I was thinking that "Time" would make a great soundtrack for this task. Great minds think a like I guess! Good job!

The pins setting the blades on the final tap was oddly satisfying. :)

I love these hands on video's

You make it look so easy, I can't tie my shoelaces 96 times 100% same exact way.

Pink Floyd is always great when working

I like how the pin sets the final placement of the blade.

Good music choice. It’s what I would be playing!

imagine having an apprenticeship with this guy. would be awesome.

I have a theory that this engine is really into your music too... you're rejuvenating it and making it young again and it shows. I wonder what the people who first put it together listened to. Good video, thanks!

Floyd action! The perfect working music, although a little Black Sabbath isn't bad either. Can't wait to see that engine in the test cell.

Oh my goodness the boss is adorable your videos need to include the boss much more

Too bad about the copy rights, I could see letting the work play out in real time while the album ticks away in the background :) Pink Floyd DSOM while assembling a jet engine... glad you have been so blessed.

Very interesting. Also, great music choice :)

outstanding job!

this is satisfying as hell

Funny. I imagined PF in the background. Well done!

Nickel is magnetic too. Some alloys of stainless steel are not magnetic, it's not the iron content, it's the crystalline structure of the metal that makes it magnetic. Austenitic steel is not magnetic.

Thanks Dr. Evil

Listening to the best music at the correct volume for blade & roll pin installation :-)

What gets me is how good condition these engines are - it looks pretty much new but as far as I know these have not been produced since the 50's (wiki says 1956).

F86 in yellow on chrome is the most beautiful aircraft ever.

Magnetic properties of nickel steel depends on heat treatment / forging process. So the disc may be single material, just processed differently in different parts.

Love the background music!

Pink Floyd is the best soundtrack for life

Drive in 1 pin = 1 big sip of beer. Repeat until run out of pins or beer.

Yay we reviewed the parallex error

Well done !

This is so cool!! And holy crap you're funny xD thanks for the laughs!

Your videos are awesome my friend，I am a jet engine lover and its great to see you operating them. Maybe you can make some time-lapse videos to show the disassemble or assemble process of a jet engine.😊

This is oddly satisfying, like those ice chewing videos my gf binge watches.

"Pin" Floyd--good choice. Either that, or Led Zep-pin.

Damn good choice of music sir.

Pink Floyd was the best music to do this job well !!!!

Im sure I heard "Im Fixing a hole where the rain gets in and stops my mind from wondering" from with in the heart of the beast.

Great vid

From what I understand the outer portion of the turbinewheel is an inconel alloy and the inner shaft is a 300 series stainless.

That was stressful! I've snapped bolts on my Moto engine a few times over the years and just backing those bolts out creates anxiety. Being 100% is just that. 100%. Sigma 6 doesn't work here. Thanks for the great video!

A little bit of trivia from Wikipedia on the Canadair Sabre. In 1952, Jacqueline Cochran, then aged 47, decided to challenge the world speed record for women, then held by Jacqueline Auriol. She tried to borrow an F-86 from the U.S. Air Force, but was refused. She was introduced to an Air Vice-Marshal of the RCAF who, with the permission of the Canadian Minister of Defence, arranged for her to borrow 19200, the sole Sabre 3. Canadair sent a 16-man support team to California for the attempt. On 18 May 1953, Ms. Cochran set a new 100 km speed record of 1,050.15 km/h (652.5 mph). Later on 3 June, she set a new 15 km closed circuit record of 1078 km/h (670 mph). While she was in California, she exceeded 1270 km/h in a dive, and thus became the first woman to exceed the speed of sound.

Pink Floyd and engine building! Can I come work for you?.....

The bevel on the roll pin.... you put them in right or wrong??

Very interesting.

Hahahahaha you gotta be kidding me! I was listening to the same song and on the end of the video it doubled up I thougth I was trippin' !!! hahahaha XD AWESOME!!!!

quick question (im sure you answered this in one of your many videos), if the pin is not easily removable how do you get the blades out? do you force the blade out and destroy internal pin?

Love your vids Jay. I would like to know what is up with the ORENDA-------- Iriqouis. sorry for the spilling

Is there any requirement for the orinentation of the roll pin? If you "transmit" tourque with them xou gave to what out where the slit goes because otherwise they wobble out of the hole...

parallax error.. i finally have the word for when i refill the wrong soda from the fountain lol

really love your videos man. Just one thing though, the magnetic properties dont depend that much on the metals that make up th material, it really depends on the arrengement of the atoms, that way, by saying that the inner part has more iron because it is more attracted by the magnet may not be always correct!

Nice music at the end boss

Hello AgentJayZ I just started watching your videos. I enjoy them immensely!!!!! My oldest son graduated from BCIT AME course. He wanted to become an airline pilot. (His lifelong dream since I can remember) but we found out he was colour blind! He ended up trying the next best thing, AME. But...it didn’t work out. Basically a huge wage gap between what he is doing now to what ‘might have been his potential’. In any case... I live in Chilliwack and own a 10 bay automobile repair facility and appreciate all your efforts in producing these videos. One day I would love to acquire some engines parts to make some type of unique gift for my son. If you think you can help, please let me know. Thanks again for your impressive efforts!

Will you be doing a video of the first startup after rejuvenating this engine? I hope so

Great knowledge

How did he remove the pins to remove the blades?

probably a good practice to index the split on the roll pin to the 3 or 9 o'clock position to ensure equal pin to blade interface.

Great video! So to remove the blades, you remove the shaft from the engine and then hammer the blades towards the rear which shears the pin then you obviously hit the pin through.?

Holy hell thats cool!

How did you torque the nut and stop the shaft from turning?

Is there a video where the balancing process is shown?

question is when you balance the turbine disk with blades you put pins on it or not? if not i wonder blades can fall out while balancing process ! how can we fix the blades while balancing

Someone opined below that moving an already-bladed turbine around the shop would be too risky, is that your 'why' for mounting the wheel first? How did they do this step during original manufacture?

It seems you use regular masking tape to label the blades. We have always been told that graphite pencils and tapes are a big no-no on the hot end because they can cause intergranular corrosion leading to catastrophic failure. Do you take the same into consideration when taping the blades?

Is there a similar video for nozzle guide vanes and other parts as well ? I loved this one.

Hey agent jz how the magnet and non magnetic steel fussed together? Please answer

I have a question about disassembly of the same turbine... Does removing blades necessitate shearing each pin, and punching out the broken pins ?? Or do they get drilled out etc ??

Is there a computer program that takes in all the blade weights and then tells you which blade goes into which slot?

The pin that locks the blades in place is driven below the disk surface into a close tolerance blind slot, with no access to the pin, how do you remove the blades?

Do these "color" patterns on the ceramic coating correlate to the thickness of the coating? Like, if this was spray paint I would think it was sprayed on unevenly. If they don't, and the coating is uniform, what are these patterns? If the do and the coating is in fact not perfectly even, doesn't that create hot spots on the blades?

Jet engine inspection 101: step one, look for cracks between the sticky/no sticky

How about a few over size holes for those roll pins? And how do they come out??

Your looking for cracks on transition was that x-rayed prior to assembly?

2:13 sick beat!

Just so happens Pandora was paying 'That's the way boys are by Lesley Gore' A real Oldie but Goody. Thanks

How do you get the pin out when you want to change the blades? For the song, I used Darude Sandtorm.. What are you doing with this engine?