One of the most valuable jewel found in the internet. The best learning experience about jet engines. The old school presentation was a truly top gun teaching in the subject matter. Thanks so much for sharing.

@johns.1898

2 жыл бұрын

Is it? There's plenty of mistakes in this

@DumbledoreMcCracken

2 жыл бұрын

This is the dumbest explanation ever. It creates the illusion of understanding in the viewer, without any real understanding

@betabilly

Жыл бұрын

3rd graders in the 1950's could comprehend this, Today, any kid over 9 years old would lose interest very quickly. Wake up schools! Your 21st century public school academics, radical agendas coupled with your liberal mindset driven by a total lack of moral purpose in education will end the high level of civilization we always strove to achieve.

@jubuttib

Жыл бұрын

@@johns.1898 Such as?

@johns.1898

Жыл бұрын

@@jubuttib I'm not gonna re-watch it to answer you

So glad this guy went on to narrate every movie trailer in the 90s. What a legendary career.

Kinda lied in my application to Boeing saying I'm a jet engine specialist, first day on the job is tomorrow and this video is really teaching me something. Wish me luck 🙏

@alext8828

Жыл бұрын

How'd you do??? Hey, tomorrow's Sunday, you liar.

@njez7563

Жыл бұрын

@@mmm365 bro was joking 💀

@Milkmans_Son

Жыл бұрын

You'll be fine since Boeing doesn't make engines.

@brucebanner52

Жыл бұрын

Just remember bro: Like a gun, Like a hose and Like a balloon. You'll be climbing the ladder in no time 🙏

@datopperharlee2628

Жыл бұрын

Good luck

Love these old educational videos. This is very clear on the basics of jet engines. Wish I had found it years ago.

@TheLuminousOne

Жыл бұрын

they are the best

@jeanounou

Жыл бұрын

Never too late brother. Long as you still breathing, it ain't ♥✌✌

@jukkatakamaa7274

Жыл бұрын

@@jeanounou ...reminds me of this: kzread.info/dash/bejne/oI1pucyCptyriNI.html

The best explanation ever of a phisycs topic. Good old XX century style, when content mattered more than superficial entertainment.

Fantastic! This has the same quality of the old Jam Handy instructional films from the 30’s-50’s. Prelinger archives has tons of stuff like this; absolutely fascinating explanations of commonplace things mostly taken for granted.

@alext8828

Жыл бұрын

Yes. Those were great.

@amitpatil5151

Ай бұрын

Good

Finally, a competent and comprehensive explanation! It's sad so many of the modern videos on the workings of jet engines, with their CG animations (some with the blades actually spinning the wrong way), are actually so superficial in commentary and content, they fall so short when compared to this video - one that must have been made ~40 years ago, but with actual in-depth knowledge of the topic. What a difference it makes.

Superb, absolutely spot on presentation with perfectly paced detailed and fluid delivery. I was hooked from the start to finish. Thank you for posting.

Absolutely fantastic presentation. Wish I had seen it as a teen ( when it was obviously produced)... Might have changed my future. Thank you for this education, many, many years later.

@tlg065

Жыл бұрын

@jim Martin me too

@Graham_Wideman

Жыл бұрын

If you had seen it... you would have had a... reaction?

@shearthrust8542

7 ай бұрын

@@Graham_Wideman IF he did , u could call him a newtonian

A superb lecture, not just the best on jet engines, but one of the best lectures on any subject.

@vatodad

Жыл бұрын

I really wish that you were correct in your assessment but there was one major error and numerous minor errors. Please read my comment for details.

@michaelbauers8800

Жыл бұрын

@@vatodad Well, people watching this, probably are not going into aeronautics engineering, or that sort of thing. They are probably happy to hear the basics of jet engines. It's like with any technical subject. You will find the simple explanations will be somewhat misleading, but that can't be helped as complicated things are really complicated with many devil is in the detail stuff. Of course if you can do better, you should make your own improved video ( I am not being sarcastic, youtube can always use more videos, as people trying to understand may watch multiple videos.)

I found this to be a excellent presentation explaining the basic principles of how a turbine engine works, and the various types of turbine engines .

If all my professors were like this guy I would’ve had 5 Nobel prizes by now

@JV-tw6lt

Жыл бұрын

It is really basic and simple presentation to be honest. It is important to not exaggerate anything to obscene levels.

@DGKFBGMd33Zy3

Жыл бұрын

@@JV-tw6lt who told you that it’s actually very important to exaggerate things.

@JV-tw6lt

Жыл бұрын

@@DGKFBGMd33Zy3 I see a lot of fools online who are in the majority typically. They elevate people to god level one moment and drop them down to ground at the next. To avoid this one needs to be highly civilized, humble and rational minded.

These old school presentations beat the pants off our more modern ones. I wonder what went wrong.

@mileswelch5136

Жыл бұрын

Govt got involved

@TheJustinJ

Жыл бұрын

@@mileswelch5136 its always been involved.

@tenhendee5479

Жыл бұрын

Preference for stupidity

@krishnannarayanan8819

Жыл бұрын

Entertainment and trying to keep the viewer's attention due to modern dopamine addiction and low attention span ruined it.

@manitoba-op4jx

9 ай бұрын

@@krishnannarayanan8819precisely

An excellent lecture. Love the old-school productions. Explains with just enough depth for an introduction course. Love it!

@dabneyoffermein595

Жыл бұрын

Someone with a PhD must have done this presentation. There is no way to keep it all straight unless you are just a flat-out genius, such as what the inventors at Rolls Royce must have been. OMG, this is crazy.

This answers so many questions I had! Thanks for uploading it. 👍🏻😀🇬🇧

Thank you very very much for this wonderful and eye-opening explanation about jet engines!!

This was SO good! I'm jealous of who could watch this back in the 1980's...

I worked at a model company back in 83. We built a model very similar to that one. It was a PW F100

This is truly priceless to anyone trying to understand these topics.

@mattb6646

Жыл бұрын

I have no reason to learn this but it's interesting as hell regardless. I'm a machinist though, and we do occasionally do work for a turbo company called Borg Warner, not for jet engines but smaller engines

@aaronwith2950

Жыл бұрын

@Matt B Yeah I am a Airplane mechanic and I learned more here then I did in multiple weeks of my training.

best jet engine learning in the internet. thanks for sharing this.

This reminds me of the class I had when I got a job on the assembly floor at P&WA in 1977. I assembled JT8s and JT9s. I’ve been in test cell control rooms. Some of those guys in there are probably working for the customer. We used to see someone from the airplane company and the airline buying that plane.

Never have jet engine fundamentals been presented so simply. This is a very useful video

@dennisp4395

Жыл бұрын

I think so too. I got me some ceiling fans i can use. Swap out the fiber for some metal blades i found in the junkyard. Or just cut up a ton of soda cans. Couple of 55 gal drums and a mister spray. There ya go! Redneck Air lines. Book early 👍 🤣🤣 Seriously though, it was quite educational from simplistic to a more complex explanation. Loved it. They just aren't making them like they used to make them

Priceless Instructional Video Extremely well Presented 👍 ...

An Excellent Video, Great Lecture, Inspiring & Pumping, must watch by all the Aerospace Propulsion Engineers

Everything goes in the inlet of the engine, the rain, the snow, the ice AND the birds 🤕

@jeromewesselman4653

Жыл бұрын

Not if the cats get em first! Yummm

@supersst838

Жыл бұрын

mostly air though

@sharoncassell9358

Жыл бұрын

That's what you call the sh*t hitting the fan. It's for the birds.

Wow, this is pretty good!!! A primer before people go to channels like AgentJayZ LOL

I thoroughly enjoyed this class! So detailed! Learned a lot!

This is Gold ! YT is amazing for educational clips like this, I save these in a dedicated playlist

@dabneyoffermein595

Жыл бұрын

No wonder these engines are so Jet-A starved.... fuel is just eaten up at such a fast rate that the wings and other fuel reservoirs are massive and very heavy. It's no wonder that these engines have to be MASSIVE to be able to move enough air to lift tons of mass into the air (weight of the passengers and airframe itself). Can you imagine all of the physics of an airplane having to come together and work flawlessly while human beings are being moved from point A to point B in these dangerous air-vessels? Lift, thrust, compression, pressurization, hydraulics, cooling, heating, comfort, electronics, weather, speed, materials, metallurgy and a myriad of other things all have to come together and work flawlessly., without fail. No wonder these high-speed air vessels fail every so often just on their own (not including pilot faults).

The history of the jet engine is actually fascinating, especially when you consider it was turned down for years during the war and the developer had basically no funding and had to work in a derelict workshop

@ghostdance56

Жыл бұрын

Actually it was the Nazi's who developed the jet engine. No one else on earth even knew the technology existed.

Worked at P&W from the late 80's thru the late 90's....I took a textbook directed version of this course but, either way, it is very nice coverage of the basic engine architecture as well as the thermodynamic & aerodynamic principles of jet engines. Fun product to work on....as a mechanical engineer, there are few jobs where you can get your hands on this much horsepower right out of school.

@francarcia3962

Жыл бұрын

my Dad tested Jet engines at P&W 60s, 70s and components in the '80s. He hung out in the back of the field near the fence for years

@highlandermachineworks5795

8 ай бұрын

We're you in Middletown, East fartford, Cheshire. Or another state? I was in Middletown for a short time

@nlabanok

8 ай бұрын

@@highlandermachineworks5795 in WPB, FL

I put JP-7 in my car and it went around the block in 3 seconds. That stuff is great.

A good example of turboshaft engines are the RR/Allison 250C engines that power the MD500 or Bell Jet Ranger helicopters, a sweet sound on start-up, I must say.

Surprised at some of the terms. Perhaps I'm just younger and there's newer terms now? The After Burner is also called a 'Reheat'. The after burned section is sometimes referred to as a 'Flame Tube' or 'Reheat Section' or 'Reheat Tube', since it's literally just a tube. An empty can. Though it does use a jacket. The C-D Nozzel exit is also called an 'Ejector'. If the C-D nozzle is a variable one its a 'Variable CD Ejector'. Flame holders are briefly gone over here and I don't know if the description was adequate? The Flame Holdsr purposely causes turbulent air that spirals and stalls, for mixing and for maintaining the flame. Air that is super sonic will blow out the flame. Why? Because the Flame can only ignite so fast - there are two terms here, Flame front and Flame Propagation. It might surprise people to know but... for those of us Americans whom love our guns? We can tell you that we actually prefer slower burning powder better than faster powders for the charge. The slower power allows pressure to build and ultimate leads to better performance of muzzle velocities in most cases. The jet engine is no different. We are simply shooting a stream of air out the barrel instead of a bullet. The limit, though, is in reverse. If the air + fuel mixture can only propagate the flame front so quickly, then we need to slow down the air that's being ignited like we want to reduce the burn rate of an charge for a bullet. If we don't, the air will be moving too fast and out run the speed in which the flame propagates, and thus you have a flame out. Flame holders are of use in Combustion Chambers as well, depending on the engine. They're primarily to agitate and cause turbulence for more adequate mixing. The CD variable Nozzle and the Tube jacket are not just for accelerating or decelerating the ejected air stream. Ambient pressure can cause back pressure to occur and the bleed air from the jacket, provided by the bypass air, as well as the use of the variable nozzle ejector, all try to balance out that possible back pressure to ensure more efficient 'ejection' of the air stream. Remember, your goal is to not only throw as much air out the back as possible, Thrust = MxA of course... but you also want to make sure that you're imparting as much of that thrust to the engine's structure itself. It makes no use if you're throwing out so much thrust but have the thrust be diluted due to going off in all directions. You want to make sure all that thrust is pushing on your engine in the one, singular direction so that you're getting the maximum physical reaction out of that thrust mass.

@gaoxiaen1

Жыл бұрын

Would you want a faster-burning powder for short-barreled handguns?

Jet engines don't suck! I love them...

@aaronwith2950

Жыл бұрын

Lol they do but, that's not the way your meaning. (Suck, squeeze, bang, blow)

Excelent explanation , it can not be found nowadays, something has been lost in modern teaching

Rolls Royce employed three spools on their large engines if I'm not mistaken=Low-Intermediate-High pressure.

@jackholman5008

2 жыл бұрын

Got it from GE

@andyharman3022

Жыл бұрын

The Concorde engines were 3-spool. Bristol Olympus.

@anthonyxuereb792

Жыл бұрын

@@andyharman3022 Thanks

@krishnannarayanan8819

Жыл бұрын

The Trent 1000

@aaronwith2950

Жыл бұрын

Are there any that used 4 spools?

The best and most through explinations

Very good explanation how a jet engine works !

Nice video covering the basics. 👍👏.

THIS IS A TRUE, INSTRUCTIONAL KNOWLEDGE, I LOVE IT, AND ALL A JEWEL OF KNOWLEDGE WITH AERO SPACE TECHNOLOGY ...

What year was this made? It's so fascinating to me to see these older videos

This video has orders of magnitude more instructive value than all of the turbo encabulator videos put together.

better than most school lectures today who agrees

Awesome video. Modern videos can't compete.

It’s an oldie but a goodie.

@AluminumOxide

Жыл бұрын

It was made in 1988!

Reading the comments reveals a lot about the people who watch YT videos.... THIS VIDEO IS INTENDED FOR GENERAL AUDIENCE NOT FOR ENGINEERS! If you throw Thermodynamics, aerodynamics, work, energy, momentum at the common mortal, he will stop watching. This is a well explained PRINCIPLE of how jet engines work! It is well spoken and shows in a simple way how this works.

I thought for a second this would be a sales pitch for people who wanted to generate inverse reactive current for unilateral phase detractors

@andyharman3022

Жыл бұрын

Using cardinal grammeters, no doubt.

This is a great informative video. I like this man's demeanor.

A really good documentary .one which I enjoyed watching a lot

This explains a very complicated concept in a very easy to understand way without glossing over information

A visually, educationally great presentation! one constructive criticism: there seems to be a conspicuous absence of any information on the turbo encabulator. Otherwise though, it’s Huell-Hauser-level gold :)

@gaoxiaen1

Жыл бұрын

en.wikipedia.org/wiki/Turbo_encabulator

I like his continuously sarcastic and condescending superior tone of voice 😂

I really happy to got recomendation from KZread for this video only. 🔥🔥

Great vid. Absolutely rocking comb-over.

What a comprehensive lecture. Marvelous to say the least. 🎉🎉🎉

Excellent video! Explained so much in detail and easy to follow. Best I’ve seen of all the youtube jet videos. Yet the one question I’ve had for years remains unanswered. With a rocket, it’s easy to see that the combustion gases push against the rocket nozzle itself, thus transferring thrust to the superstructure. With a turbojet, ALL the videos and explanations just say “Newtons Law”, gas jets out the back and gives forward thrust. But exactly WHAT is the exhaust gas “pushing against”? The best I can imagine is most is pushing against the forward structures of the combustion chambers, and a good portion is also effectively pushing against the compressed air at the last stage of the compressor. I imagine the compressed air forms a stationary front, just aft of the final blade wheel. And since exhaust gas cant really ‘push’ against air (another gas), it is actually the spinning compressor blades “generating” the “thrust” as they maintain 20-40 ATM compressed air pressure. Thus the “thrust” is actually ultimately generated in the main rotor itself, and transferred to the superstructure by the bearing system. I recall on commercial flights, at takeoff, the engines whine higher and higher and higher - then there’s a sudden ‘boom’ and solid roar - I think that is the stationary compressed air front forming and reaching static equilibrium with the combustion front. Anyone can comment on this?

One question I have about this explanation is why the combustion exhaust all seems to go out the exhaust. The combusting gases would go in all directions, so some would go forward too.

Yes Boss! Every action has a same reaction.

Very informative and eloquent. Thanks

Good watch. Learned a lot. Didn’t know all those veiny outside tubes carry lubricant and air. And how a turbojet engine basically has one moving part lol. Though I wonder how the pneumatic starter gets it’s energy?

That cop really looks like he means business

Using a bullet recoil as an example of jet propulsion ... nice

I need this video because i am building a mig and flying to the edge of the armosphere.

Nothing better than this. I call the approach Simplistic Conceptualization. Offfical term ? Everything is good but the concept is even clearer when slowly emphasizes that in supersonic mode, the convergent/divergent principle is reverse. Also air enters into the engine front end needs to be subsonic. That explains why the nozzle throat is that way and why the nozzle opens in after-burner (supersonic) mode.

This channel deserves multi million subscribers..

I'm gonna fall asleep so hard to this later. Thanks for the upload, excel spreadsheet videos stopped working after a while.

Im 47 years old and today watched this for the first time. Call me a slow starter!

This is great I learned a lot 💯👍🏾

That thumbnail though. I keep thinking is rik mayall 👁👄👁

I'm still missing something here. I understand precisely how a 4 stroke automobile engine creates power by the burning of fuel in the combustion chamber and the expansion of the air fuel mixture forces the piston down when intake and exhaust valves are closed. But a jet engine is "open" on both ends. Why doesn't the jet fuel/air mixture expand forward instead of backward or both ways? In an internal combustion engine the ONLY way the burning fuel/air mixture can expand is by pushing the piston down and turning the crankshaft. What am I missing? I don't understand why it always goes out the back of the engine. And where does the power com from to turn the fans and the turbine?

This is definitely AgentJayZ's dad. I just wish the first stage blades weren't seized on all these engines, just think how much faster it would go with all blades spinning.

I learned a lot from this lecture.

wow this is super easy to understand thanks!

Very, very cool vídeo ! 👍🏻👍🏻👍🏻

What would happen in a vacuum? On the earth, the issuing thrust pushes against the atmosphere. In a vacuum, what does the thrust push against?

@TheJustinJ

Жыл бұрын

It doesn't have to "push against" anything. In a vacuum, a rockets fuel and oxidizer is burned and converted to hot gasses which expand and are propelled through a nozzle. The acceleration of the propellant mass creates an equal and opposite reaction that is thrust. A Jet engine (turbine engine) is an air breathing internal combustion engine and it cannot operate in a vacuum. Only a rocket that brings along its own oxidizer can operate in the vacuum of outer space.

@01menyou

Жыл бұрын

@@TheJustinJ I realise the difference between a rocket and a jet. My question is about the action of the thrust. The thrust is a gas and so pushes in all directions at once. Inside the engine against the internal surfaces, and outside against the atmosphere. The fire hose in the video shows the reaction of the operators, to the reaction of the water hitting the atmosphere. My misunderstanding, is that in a vacuum the thrust would empty into nothingness. I've seen a video of a balloon powered, toy car. When released the car shot off, as you'd expect, across the floor. However, when a vacuum cleaner hose was directed across the balloon's discharge flow the car remained still. The thrust was sucked away and the reaction to move the toy lost.

@mytube001

Жыл бұрын

The exhaust gases are thrown out of the engine backwards. Momentum is always conserved, so an equal momentum is imparted to the engine in the exact opposite direction - forward. No atmosphere needed. The jet engine needs air to operate, but that air can come from a tank and then the engine would operate fine outside of an atmosphere (the air tank would not be practical at all, but that's an engineering problem, not a physics problem).

@01menyou

Жыл бұрын

@@mytube001 OK. Imagine it would be possible to engage reverse thrust while the plane was stationary. Which direction would the plane roll?

@alext8828

Жыл бұрын

@@01menyou No. You got that a little wrong. If you sit in your office chair and throw books at your co-worker, your chair (if it's on a nice smooth floor) will move the other way. Did you think those books were pushing on the atmosphere? That "reaction" is what pushes a jet engine forward. They decided not to throw books out the window so they throw hot gas out instead. It's one of the most important and misunderstood principles in physical science.

I love instructional videos like this, and especially this authority voice :D

Found it! I watched this when I was in high school and have been looking for it for a long time!

Thanks for this wonderful explanation.

Great video, his explanation of how a jet engine works has really helped me understand why jet engines takes thousands and thousands of gallons of kerosene for a 5 hour flight to cross the country. Plus once the plane is high up in the sky in a oxygen rich environment it takes more fuel to burn hotter.........Gosh, no wonder why jets are so expensive, it's because they are more complex than a combustion engine car.

@knocksensor3203

Жыл бұрын

I thought high up in the sky , was oxygen Deficient 🤔

@jmhowlett

Жыл бұрын

@@knocksensor3203 your right, my mistake lol. That's why they have the oxygen masks fall down in an emergency, and down close to the ground is where all the oxygen settles.

How to explain the workings of a jet engine in 4 words. Suck/Squeeze/Bang/Blow. Easy peasy.

Esme Sara khel right quantity of fuel (input )+ parts aceept that input without any problem , and exhaust and sound comes in a right sequence

nice presentation of axial combustolators

I wish the professor for the course I took in propulsion showed this presentation on the first day of class. all we got was math equations with very little tangible information. made for a boring class with concepts hard to grasp. pretty much a waste of time and money.

Great lecture I love it

Outstanding presentation!

Where can I found the full series? What's the name of the professor?

@avitor500

Жыл бұрын

Yeah, that would be great to find the full series.

@andyharman3022

Жыл бұрын

This was a video shown to new Pratt & Whitney employees for training. Late 1980's would be my guess.

So I miss the part explaining why we pull the air in at Mach 2 and then reduce it to Mach 1 why not just pull it in it Mach 1 and reduce energy consumption needed

@aaronwith2950

Жыл бұрын

Which is simpler or cheaper?

@ekscalybur

Жыл бұрын

Might have something to do with the jet moving through the air at Mach 2.

Excellent presentation

I learnt a lot from this video, I thank I'll be a jet mechanik

Very pleased that this was recommended to me 👌

What is "flame out"?. Is it because the burner stage is not getting enough air to sustain continued ignition? Does it literally mean the flame runs out? Or does a lack of pressure cause the ignition point to move closer to the compressor? I guess that would cause the turbine to move slower causing less air in causing less burn?

This is morw than I was taught in m1 abrams mecha ics class. It's turbin engine puts out 1500 horsepower.

Are there any videos of compression test only using simulated spin up?

"Nozzle Guide Vanes? Good name for them." ~ Filmatic forerunner to the _X For Dummies_ educational books series

this one here is truly a gem

Does this means that it needs aluminum materials for heat sustenance???

@jubuttib

Жыл бұрын

Probably more like titanium, etc... Aluminum is a bit, how do I put it, "melty". =) I mean sure, some of the cooler parts could certainly use aluminum, but even the compressor exit and diffusor temperatures are near the melting point of aluminum, and it does get quite soft even before it melts.

07:00 'We'll do that job with a ........... 'turban' THIS I GOTTA SEE?

0:11 Subbed 😂😂🎉❤

Great document!

Great exposition of the jet engine. I would only add that it would have been far more understandable, for me at least, if instead of a balloon, they had started the comparison of the jet engine combusters with the rocket engine with which the jet engine is an obvious descendant.