This video is more awesome than people may realize. This video captures the following visual information I have not seen in other videos. First, it shows clearly how the air flow volume is actually only a thin cylinder around the spinning fans. Most pepole don't realize that air hitting the engine does not go through the engine even close to the center. Second, it shows how this particular kind of engine has not one but two coaxial counter-rotating shafts. Three, it clearly shows the angle of the compressor blades (I mean the moving blades) and the stator blades (the fixed position blades along the outside). Fourth, the second and third features combined allow you to imagine how the air flows from the forward exterior fan, gets pushed through and will start spiralling, and the *spiral* flow from the front engine fan then meets the first row (part of first stage?) of compressor blades at a *low* angle of attack (the blades are efficiently moving through spiraling air like a wing). I always wondered how the blades were not acting like a wall pushing air. It's because the air coming at them is spiraling and not racing straight in. This reduces the angle of attack, so the compressor blades don't create turbulence (or stall). Then you can imagine (yes, you need to imagine) how the first row of blades starts reducing the spiral flow, so the next row of blades needs to be angled to face more of an axial than spiral flow. This continues through the compressor stage. The video does fail to mention there are two stages (or three? if you count the front blade?). From what I call the first stage, the air still has some spiral motion, and the second stage of blades then rotates in the opposite direction from the first, allowing the blades (like before) to meet the air with less angle of attack. This allows for reduced turbulence/stalling while allowing the blades to do more work. Again, the fans have less and less angle as you go from front to back. All while this is happening, look how very little space the air is moving through. It gets smaller! Now, an engine working at a steady speed always has a steady amount of air mass moving through it (lets say pounds per minute). Each slice of the engine has the same flow rate. Where I pointed out the cylinder gets smaller, the mass moving through has less space, so it must be more dense. That means it *must* be at higher pressure (unless you could magically cool it to reduce the pressure). So, you see the air must be flowing through at higher and higher pressure. Then, when it gets past the second stage (second set of fans), the flow is allowed to expand where it meets the fuel. NORMALLY, expanding air flow reduces the pressure. However, the fuel is ignited at the expansion point. The heat is just like an explosion - it prevents the pressure from dropping. So, you go from a narrow, high-pressure flow to an expanded area with similar pressure. Note - the pressure is NOT greater in the combustion chamber than right upflow. If it were, the flames would move forward. No, the pressure actually DROPS in the expanded flow in the combustion chamber but not much. However, although pressure keeps dropping from final compressor fans to combustion, the ENERGY/work put into the air dramatically increases due to the burning fuel that is preventing the pressure drop in the expanding flow volume. Then, this air is once again squeezed through a narrowing opening, speeding it up and meeting the exit stage of the turbine. (I don't know the terminology.) I may sound rambling, but my point is - I have not seen a video that allows you to see the moving parts this way. I am especially stunned I did not know (a) how narrow the air flow cylinder is and (b) that the engine has counter-rotating shafts, one poking through the other. Cool!
@@vagabond630 this man just spent the good part of a day detailing his opinion on this, and you ask HIM why there are turbines? Watch the video dumbass
@@untrust2033 fuck you man, I wanted to know If there are turbines, won't there be energy loss? The velocity of the gas ejecting out would be reduced. But then again is the thrust actually produced by the exhaust? or the thrust is actually produced by the fan sucking in the bypass air and this fan is powered by the turbines?
Very cool. I didn't know the blades turn in opposing directions... I've seen these engines in museums cut open to see inside, but I couldn't figure out how the things don't just shoot flame out of both ends!
This is all amazing, but I still also love even more watching a simple afterburner take-off and feeling it rattle my bones! :-D Well, I guess I can't do that anymore. I only served a brief time and I am not near SR-71s or other AB-equipped jets that are taking off. (OK, nobody is near SRs taking off anymore, but one time I had a single privilege of witnessing that.)
@@BrunoBoy3913 - I saw mine at Beale. I was with a small summer contingent of USAFA cadets that stayed there a couple of days. Operation CONUS was the name of the program I was in. Small groups of cadets were sent to tour various groups of three bases for two weeks. My group was Beale, McClellan, and Travis. (A few years later I ended up serving at Travis as a lieutenant in the Travis 22nd AF Ops center Weather Support Unit, plus doing flight line wx briefs and forecasting). I remember touring the Beale maintenance facilities and one airman animatedly expressing his passionate hate about how often his uniform got wet from all of the leaking fuel and hydraulics, plus all the laundering required! That was kind of funny. He and some others were not fond of the Marysville area. What did they want, New York City? That's life in the AF for most people. So, we got to see a daytime takeoff of a U2 and a takeoff of a Blackbird, plus a sit in the simulator - but it was off and a few things were covered up. The sim was cool and lame at the same time. Us cadets were a little bummed, as we had heard from others how they were given flights in F-15s or at least cool sim rides at their respective bases. We ended up riding in KC-135 that refueled a Blackbird. We each joined the boom operator for a bit. That was a special treat. How many people get to do that? I think the ride doubled up refueling F-16s as well, or maybe that was another tanker ride. It is still amazing (to anyone not in a coma) how superior the Blackbird was to anything else that ever flew high and fast.
So lemme get this straight, a Jet engine is basically a recoilless rifle and a turbo conjoined to make continuous combustion a reality. I thought these engines were much more complicated than regular combustion engines but it seems I was wrong; they seem much simpler than a regular car/truck engine!
@@nicholasaquino5160 Yeah flying an aircraft does not mean you know a jet engine, with all due respect. I work for GE and have worked for CFM / Safran in the past. here is a tip : noise leads to vibrations and losses making engine inefficient. in lay man's term. An old inefficient engine would make noise.
The most efficient engine is one that spits out a stream of air at almost the same velocity of the external airstream. So if your plane flies at 560 mph, a high bypass engine will dump air out the back at just below the speed of sound.
Impressive stuff, but let's forever remember that without Sir Frank Whittle, English inventor of the jet engine, none of this would be possible. As an Air Commodore, the RAF will be forever proud of Frank.
kinda like in your car where air comes in the where the spark plugs spark and gas is sprayed as a mini bomb make the pistons move up and down thats the thrust to push and make camshift go
They're not quieter, your old ass is getting deaf like the rest of us. Ask some of the people who bitch about loud aircraft and live near an airport. I'm 25 miles from MCO and my 60yo ears can hear them fly overhead, but can't hear the Olady bitch at me .
Thank you! Finally an animation that shows the propellers rotating the right way.
This video is more awesome than people may realize. This video captures the following visual information I have not seen in other videos. First, it shows clearly how the air flow volume is actually only a thin cylinder around the spinning fans. Most pepole don't realize that air hitting the engine does not go through the engine even close to the center. Second, it shows how this particular kind of engine has not one but two coaxial counter-rotating shafts. Three, it clearly shows the angle of the compressor blades (I mean the moving blades) and the stator blades (the fixed position blades along the outside). Fourth, the second and third features combined allow you to imagine how the air flows from the forward exterior fan, gets pushed through and will start spiralling, and the *spiral* flow from the front engine fan then meets the first row (part of first stage?) of compressor blades at a *low* angle of attack (the blades are efficiently moving through spiraling air like a wing). I always wondered how the blades were not acting like a wall pushing air. It's because the air coming at them is spiraling and not racing straight in. This reduces the angle of attack, so the compressor blades don't create turbulence (or stall). Then you can imagine (yes, you need to imagine) how the first row of blades starts reducing the spiral flow, so the next row of blades needs to be angled to face more of an axial than spiral flow. This continues through the compressor stage. The video does fail to mention there are two stages (or three? if you count the front blade?). From what I call the first stage, the air still has some spiral motion, and the second stage of blades then rotates in the opposite direction from the first, allowing the blades (like before) to meet the air with less angle of attack. This allows for reduced turbulence/stalling while allowing the blades to do more work. Again, the fans have less and less angle as you go from front to back. All while this is happening, look how very little space the air is moving through. It gets smaller! Now, an engine working at a steady speed always has a steady amount of air mass moving through it (lets say pounds per minute). Each slice of the engine has the same flow rate. Where I pointed out the cylinder gets smaller, the mass moving through has less space, so it must be more dense. That means it *must* be at higher pressure (unless you could magically cool it to reduce the pressure). So, you see the air must be flowing through at higher and higher pressure. Then, when it gets past the second stage (second set of fans), the flow is allowed to expand where it meets the fuel. NORMALLY, expanding air flow reduces the pressure. However, the fuel is ignited at the expansion point. The heat is just like an explosion - it prevents the pressure from dropping. So, you go from a narrow, high-pressure flow to an expanded area with similar pressure. Note - the pressure is NOT greater in the combustion chamber than right upflow. If it were, the flames would move forward. No, the pressure actually DROPS in the expanded flow in the combustion chamber but not much. However, although pressure keeps dropping from final compressor fans to combustion, the ENERGY/work put into the air dramatically increases due to the burning fuel that is preventing the pressure drop in the expanding flow volume. Then, this air is once again squeezed through a narrowing opening, speeding it up and meeting the exit stage of the turbine. (I don't know the terminology.) I may sound rambling, but my point is - I have not seen a video that allows you to see the moving parts this way. I am especially stunned I did not know (a) how narrow the air flow cylinder is and (b) that the engine has counter-rotating shafts, one poking through the other. Cool!
can you explain me why are there turbines?
@@vagabond630 this man just spent the good part of a day detailing his opinion on this, and you ask HIM why there are turbines? Watch the video dumbass
Wow! Maybe you can re-narate the video. Your in-depth observation is what I needed.
@@untrust2033 fuck you man, I wanted to know If there are turbines, won't there be energy loss? The velocity of the gas ejecting out would be reduced. But then again is the thrust actually produced by the exhaust? or the thrust is actually produced by the fan sucking in the bypass air and this fan is powered by the turbines?
bruzote you mentioned everything Except the FREQUENCY of the compressed air. ;)
For everyone wanting to see a description of the starter motor, go to th-cam.com/video/7KHMaa-Pv0I/w-d-xo.html
Thank you pratt & whitney..only video that has made sense..now I understand jet engines
The sound effects helped me understand better, thanks Pratt & Whitney!
This was a really well animated video and it was very easy to understand thank you!
I like bow P&W put what is basically an equivalent of 'buy my merch' at the end ))
That made so much sense. So glad I could learn this!
Very cool. I didn't know the blades turn in opposing directions... I've seen these engines in museums cut open to see inside, but I couldn't figure out how the things don't just shoot flame out of both ends!
The trick to higher fuel efficiency? An amazing gear.
Haha 😂
One of the most educative adverts I've seen in a while
Thanks for letting me learn more for my pilot training 😂
"an amazing gear" ok
Considering this video is an advertisement for their new planes it's no surprise they've dumbed stuff down so anyone can understand it.
fucking awful lol
Planetary would be too confusing here.
That's all you need to know... Lol
😂 😂 😂
Beautiful explanation.I understood the jet engine concept clearly.Ty and keep it up.
Keep it up? they have been supplying engines to legendry aircrafts for decades
Fantastic video. Thank you!
Thanks for making it so simple.
Thank you very much, I'm just studying the principle of jet engine compressorsk. Thank you for show me this close look.
Explanation is really clear!
Thank you 🙏🏼 I love Pratt & Whitney ❤ amazing video
I already knew how they work but I enjoyed watching it anyway. Good video
i can watch vids like this all day
Why so hyped and the music does my head in, what good does that do.
I really liked the video, thanks!
This is all amazing, but I still also love even more watching a simple afterburner take-off and feeling it rattle my bones! :-D Well, I guess I can't do that anymore. I only served a brief time and I am not near SR-71s or other AB-equipped jets that are taking off. (OK, nobody is near SRs taking off anymore, but one time I had a single privilege of witnessing that.)
I did too. I was stationed at Beale AFB where nine of them were kept. Watched from the flight line. Bone rattling amazing
@@BrunoBoy3913 - I saw mine at Beale. I was with a small summer contingent of USAFA cadets that stayed there a couple of days. Operation CONUS was the name of the program I was in. Small groups of cadets were sent to tour various groups of three bases for two weeks. My group was Beale, McClellan, and Travis. (A few years later I ended up serving at Travis as a lieutenant in the Travis 22nd AF Ops center Weather Support Unit, plus doing flight line wx briefs and forecasting). I remember touring the Beale maintenance facilities and one airman animatedly expressing his passionate hate about how often his uniform got wet from all of the leaking fuel and hydraulics, plus all the laundering required! That was kind of funny. He and some others were not fond of the Marysville area. What did they want, New York City? That's life in the AF for most people. So, we got to see a daytime takeoff of a U2 and a takeoff of a Blackbird, plus a sit in the simulator - but it was off and a few things were covered up. The sim was cool and lame at the same time. Us cadets were a little bummed, as we had heard from others how they were given flights in F-15s or at least cool sim rides at their respective bases. We ended up riding in KC-135 that refueled a Blackbird. We each joined the boom operator for a bit. That was a special treat. How many people get to do that? I think the ride doubled up refueling F-16s as well, or maybe that was another tanker ride. It is still amazing (to anyone not in a coma) how superior the Blackbird was to anything else that ever flew high and fast.
A very useful video. Thank you!
1:24 me after Taco Bell
Jackal lol
lol
I am the 69th like, so please don’t like exept if you are going to like this comment up to 6.9K
@@doapin6240 after opening the page I see like counter is 69, don't worry I won't change it
lol
Very good video. Helped me!
anything that works on action reaction philosophy will work wonders until physical limitation comes in. this is why i love this
Freaking amazing video . Thanks 👏👏
this has the best 3d animation than other videos
Best explanation i ever had on jet engines thank you
tego the best to oni ci tutaj nawet nie powiedzieli ;)
This is the best explanation so far ❤
So lemme get this straight, a Jet engine is basically a recoilless rifle and a turbo conjoined to make continuous combustion a reality.
I thought these engines were much more complicated than regular combustion engines but it seems I was wrong; they seem much simpler than a regular car/truck engine!
i agree its much simpler than a car engine just that there are alot of blades spinning to compress the air sucked in
There are WAY less moving parts, which results in smoother operation while being simpler.
Best explanation I’ve seen.
One of the best and simple explanation
Best explanation so far!!
Awesome bro!
Fantastic music in the background and also smart and to the point explanation.A Dey❤❤❤
Thanks for this educational video
Informative
Extremely Intriguing
Annoying music, but interesting nonetheless.
studies show you retain more when listening to music
@@cwr8618
Studies are also wrong sometimes, because the music was certainly distracting and annoying in this video.
@@AlainHubert easy tiger, just sharing a thought
eh, didn't mind it much, but you have a point
I mean that's YOUR opinion.. I enjoyed it and the video. Thanks for sharing your comment..
At least this one got the rotation of the fan right
Bring back the LOUD JT8D's. That's how a jet engine should sound"❤
Wht nonsense. You have no idea what a jet engine should be like
No maybe flying since 1984. Nahh" I Probably forgot more about a jet engine then you'd know!!!!!!!
@@nicholasaquino5160 Yeah flying an aircraft does not mean you know a jet engine, with all due respect. I work for GE and have worked for CFM / Safran in the past. here is a tip : noise leads to vibrations and losses making engine inefficient. in lay man's term. An old inefficient engine would make noise.
Pratt & Whitney -- Dependable Engines, Enduring Freedom.
Please loose the irritating music. Good video.
@Hull's Production's yes
@Hull's Production's lol
Get rid of that horrible music & just let the boy talk!
Seconded.
It helped me focus
I like ur video love u bro
Best explanation!
Yea, but it is still unclear to me how do those engines start.
thank you!
Pratt and Whitney made the sr 71 what it was. Legendary
No one gonna talk about how turbine is pronounce 😆
Turban 😂
the thing is, the way jet engines can push so much is because there are a lot of fans
Great video.
Very impressive!
Hi @Pratt & Whitney , may I know what kind of software are you using for this animations ?
GREAT VIDEO
Nice video!
I'm sold! So where is my " buy one and get one free" button?
Yes, everything is like squeezing a balloon..
Hey please look into the issues of neo 320 engine failures . 2 weeks ago another indigo flight.
Good explanation & clear animation,keep up
"An AMAZING gear" lmao what, the revolutionary secret to fuel efficiency has been an amazing gear all along
hi there. can I use 10 seconds of this clip for educational purpose in my own language?
That's good information 💯😍
To start with, what makes the front fan spin? Pistons? Electr😢 motor?
Thank you Uploader and my sweetheart Angel KD 😘 😘😘💕👩❤️💋👨👌 👌
Wow well explained👏👌
Nice video very good explanation..
Thanks for video
Fantastic video, kindly make more and more PW videos...
Great explanation👍
Please make a video of pressure cleaner.
*You got 800 comments because this is 💯💯💯💯💯💯💯.*
"A Kind of super gasoline" seems to be confusing the engineers here.
Pretty badass! Slow down the fan for more thrust & better efficiency. Who'da thought!😉
The most efficient engine is one that spits out a stream of air at almost the same velocity of the external airstream. So if your plane flies at 560 mph, a high bypass engine will dump air out the back at just below the speed of sound.
Impressive stuff, but let's forever remember that without Sir Frank Whittle, English inventor of the jet engine, none of this would be possible. As an Air Commodore, the RAF will be forever proud of Frank.
Sir Frank was a true visionary, like fellow Englishman Alan Turing who created the programmable computer.
The video is awesome. Please what is the artist/sight name of the background song, playing on the background? It is very nice.
Nice video good job .😀
fantastic explanation
Another question, where is the rotating assembly suspended? And how are the bearings cooled?
Best channel
So what percentage of total thrust is made up by the turbofan vs. the jet turbine?
Gracias .... For this video
Pratt & Whitney J58 May I know how it works that engine and how to rebuild it 👍?
Very short and informative
Lol! Even in 1st class, who enjoys flying on a commercial jet these days? Those days are gone. Excellent video, regardless!
Jet engine very well explained!
...and the bypass air also expels most of the water you get from storms etc rather than it going through the turbine.
Good explained ❤
I love my company. We, the dependable people with dependable engines.
kinda like in your car where air comes in the where the spark plugs spark and gas is sprayed as a mini bomb make the pistons move up and down thats the thrust to push and make camshift go
The background music is so amazing any link for the site or artist ?
Rugrats - theme song
Nice explanation.
My son is joining P&W and will make this tech even better.
what made the turbin spin?
They left out a few parts but a good explanation nonetheless!👍
That's fantastic
I was wondering how they made jets so quiet! When I was younger, the sound of a TriStar at full throttle was deafening...
They're not quieter, your old ass is getting deaf like the rest of us.
Ask some of the people who bitch about loud aircraft and live near an airport.
I'm 25 miles from MCO and my 60yo ears can hear them fly overhead, but can't hear the Olady bitch at me .
that was so cool
Well explained
I understand. Very good.
Which part of this engine is grounding all the NEOs?