How Jet Engines Work

Рет қаралды 2,095,372

Pratt & Whitney

6 жыл бұрын

Пікірлер: 781

@5disguised 3 жыл бұрын

Thank you! Finally an animation that shows the propellers rotating the right way.

@jasonlake2427 3 жыл бұрын

Thank you pratt & whitney..only video that has made sense..now I understand jet engines

@bruzote 6 жыл бұрын

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 5 жыл бұрын

can you explain me why are there turbines?

@untrust2033 5 жыл бұрын

@@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

@thedarkchocolate4700 5 жыл бұрын

Wow! Maybe you can re-narate the video. Your in-depth observation is what I needed.

@vagabond630 5 жыл бұрын

@@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?

@ZXXpilot 5 жыл бұрын

bruzote you mentioned everything Except the FREQUENCY of the compressed air. ;)

@acemaxximus7175 3 жыл бұрын

The sound effects helped me understand better, thanks Pratt & Whitney!

@karlwolf9805 4 жыл бұрын

The trick to higher fuel efficiency? An amazing gear.

@alexfright8217 2 жыл бұрын

Haha 😂

@kelseyj9813 5 жыл бұрын

That made so much sense. So glad I could learn this!

@joshispro345 2 жыл бұрын

This was a really well animated video and it was very easy to understand thank you!

@KhoPhi 4 жыл бұрын

One of the most educative adverts I've seen in a while

@acreepykiwi6788 4 жыл бұрын

I like bow P&W put what is basically an equivalent of 'buy my merch' at the end ))

@jaimemartin6748 8 ай бұрын

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!

@gregorymark6014 17 күн бұрын

Lol! Even in 1st class, who enjoys flying on a commercial jet these days? Those days are gone. Excellent video, regardless!

@bruzote Жыл бұрын

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 6 ай бұрын

I did too. I was stationed at Beale AFB where nine of them were kept. Watched from the flight line. Bone rattling amazing

@bruzote 6 ай бұрын

@@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.

@tamar5261 5 жыл бұрын

Please loose the irritating music. Good video.

@tamar5261 Жыл бұрын

@Hull's Production's yes

@alaskaaksala123 Жыл бұрын

@Hull's Production's lol

@johndufford5561 Жыл бұрын

Get rid of that horrible music & just let the boy talk!

@manojkothwal3586 Жыл бұрын

Seconded.

@tmc3178 10 ай бұрын

It helped me focus

@trueindian887 5 жыл бұрын

Beautiful explanation.I understood the jet engine concept clearly.Ty and keep it up.

@wizardred2408 2 жыл бұрын

Keep it up? they have been supplying engines to legendry aircrafts for decades

@rabbanigr 4 жыл бұрын

Thanks for making it so simple.

@geraldbull9272 3 ай бұрын

Why so hyped and the music does my head in, what good does that do.

@Cruminum 2 жыл бұрын

Pratt and Whitney is my favourite engine manufacturer

@funy0n583 4 жыл бұрын

"an amazing gear" ok

@Hopesedge 4 жыл бұрын

Considering this video is an advertisement for their new planes it's no surprise they've dumbed stuff down so anyone can understand it.

@ExtremeUnction1988 4 жыл бұрын

fucking awful lol

@billboyd4051 4 жыл бұрын

Planetary would be too confusing here.

@Dazhimself 3 жыл бұрын

That's all you need to know... Lol

@jamesbosworth9155 3 жыл бұрын

😂 😂 😂

@JohnDoe-yq9ml Жыл бұрын

Thank you 🙏🏼 I love Pratt & Whitney ❤ amazing video

@arundey1988 Ай бұрын

Fantastic music in the background and also smart and to the point explanation.A Dey❤❤❤

@gustavoechevarria9369 Жыл бұрын

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!

@ma2i485 9 ай бұрын

i agree its much simpler than a car engine just that there are alot of blades spinning to compress the air sucked in

@bigchungus1848 8 ай бұрын

There are WAY less moving parts, which results in smoother operation while being simpler.

@toby2581 6 ай бұрын

Yeah, they're really not conceptually complicated. The difficulties in the development of the jet engine were more about the comparatively advanced material science and manufacturing side.

@Ghent2007 4 жыл бұрын

Pratt & Whitney -- Dependable Engines, Enduring Freedom.

@smusks1966 Жыл бұрын

Thank you very much, I'm just studying the principle of jet engine compressorsk. Thank you for show me this close look.

@nicholasaquino5160 3 ай бұрын

Bring back the LOUD JT8D's. That's how a jet engine should sound"❤

@dweeder1453 3 ай бұрын

Wht nonsense. You have no idea what a jet engine should be like

@nicholasaquino5160 3 ай бұрын

No maybe flying since 1984. Nahh" I Probably forgot more about a jet engine then you'd know!!!!!!!

@dweeder1453 3 ай бұрын

@@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.

@tarrevizslafett5205 Жыл бұрын

Explanation is really clear!

@T1Earn 4 жыл бұрын

i can watch vids like this all day

@Simon_r2600 Жыл бұрын

I already knew how they work but I enjoyed watching it anyway. Good video

@metalrulz9510 2 жыл бұрын

Pratt and Whitney made the sr 71 what it was. Legendary

@royhsieh4307 3 жыл бұрын

anything that works on action reaction philosophy will work wonders until physical limitation comes in. this is why i love this

@RobotCentral 8 ай бұрын

Fantastic video. Thank you!

@woozy7405 Жыл бұрын

"An AMAZING gear" lmao what, the revolutionary secret to fuel efficiency has been an amazing gear all along

@Turrican60 4 жыл бұрын

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.

@ZilogBob 7 ай бұрын

Sir Frank was a true visionary, like fellow Englishman Alan Turing who created the programmable computer.

@wydopnthrtl 2 ай бұрын

A very useful video. Thank you!

@UhhKhakis 4 жыл бұрын

1:24 me after Taco Bell

@scooraft9971 4 жыл бұрын

Jackal lol

@1974moumita 4 жыл бұрын

lol

@doapin6240 4 жыл бұрын

I am the 69th like, so please don’t like exept if you are going to like this comment up to 6.9K

@1974moumita 4 жыл бұрын

@@doapin6240 after opening the page I see like counter is 69, don't worry I won't change it

@vdmur7952 3 жыл бұрын

lol

@abdurrahmanf.a.5624 4 жыл бұрын

this has the best 3d animation than other videos

@vipahman Жыл бұрын

My son is joining P&W and will make this tech even better.

@TheAsianpancakes 6 жыл бұрын

Thanks for this educational video

@aali5252 4 жыл бұрын

Informative

@ssoton 6 жыл бұрын

hi there. can I use 10 seconds of this clip for educational purpose in my own language?

@bobknob5819 4 жыл бұрын

Best explanation I’ve seen.

@skbmhango4109 5 ай бұрын

This is the best explanation so far ❤

@ahmedseada7371 4 жыл бұрын

Freaking amazing video . Thanks 👏👏

@RuiPlaneSpotter 4 жыл бұрын

I really liked the video, thanks!

@amuktadir1991 10 ай бұрын

IT Will Also Work.A True Gentlemans.

@luthandolaw2301 2 жыл бұрын

Best explanation i ever had on jet engines thank you

@ed.sailor1031 5 ай бұрын

tego the best to oni ci tutaj nawet nie powiedzieli ;)

@williejohnson6466 5 жыл бұрын

Extremely Intriguing

@alexconfidence2354 4 жыл бұрын

One of the best and simple explanation

@joshwilliams4583 4 жыл бұрын

Best explanation so far!!

@VitalMusic217 5 жыл бұрын

At least this one got the rotation of the fan right

@billboyd4051 4 жыл бұрын

"A Kind of super gasoline" seems to be confusing the engineers here.

@abbasaviation Жыл бұрын

Good evening, I hope you’re having a nice day. Firstly, I would like to thank you for your great effort and useful videos. Secondly, I wanted to have your approval to use some of your videos on my daily motion channel if you wouldn’t mind. Thanks in advance and sorry for the inconvenience. Abbas Mahmoud. Content Creator.

@guyconiglio8223 3 ай бұрын

Very good video. Helped me!

@AlainHubert 6 жыл бұрын

Annoying music, but interesting nonetheless.

@cwr8618 4 жыл бұрын

studies show you retain more when listening to music

@AlainHubert 4 жыл бұрын

@@cwr8618 Studies are also wrong sometimes, because the music was certainly distracting and annoying in this video.

@cwr8618 4 жыл бұрын

@@AlainHubert easy tiger, just sharing a thought

@ugh2668 4 жыл бұрын

eh, didn't mind it much, but you have a point

@0nEl0vE_3m 4 жыл бұрын

I mean that's YOUR opinion.. I enjoyed it and the video. Thanks for sharing your comment..

@azmike1956 4 жыл бұрын

Pretty badass! Slow down the fan for more thrust & better efficiency. Who'da thought!😉

@jaffacalling53 Жыл бұрын

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.

@DB-nl9xw 5 жыл бұрын

Best explanation!

@rafakordaczek3275 4 жыл бұрын

Yea, but it is still unclear to me how do those engines start.

@stephenmutuku3847 5 жыл бұрын

Good explanation & clear animation,keep up

@Binette96 3 жыл бұрын

Hi @Pratt & Whitney , may I know what kind of software are you using for this animations ?

@gdfggggg 4 жыл бұрын

...and the bypass air also expels most of the water you get from storms etc rather than it going through the turbine.

@infoandmotivationaltv5636 4 жыл бұрын

Thank you Uploader and my sweetheart Angel KD 😘 😘😘💕👩‍❤️‍💋‍👨👌 👌

@simonbyrd6518 6 жыл бұрын

Yes, everything is like squeezing a balloon..

@mrugennaik534 3 жыл бұрын

I love my company. We, the dependable people with dependable engines.

@praffulsharma5615 6 ай бұрын

thank you!

@lexluther919 4 жыл бұрын

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

@johnlibra7734 4 жыл бұрын

Very impressive!

@caanonuugfilmsacademy8794 6 жыл бұрын

Pratt & Whitney J58 May I know how it works that engine and how to rebuild it 👍?

@boshiij3449 4 жыл бұрын

I'm sold! So where is my " buy one and get one free" button?

@tinetannies4637 Жыл бұрын

Another question, where is the rotating assembly suspended? And how are the bearings cooled?

@sampeter8697 5 жыл бұрын

Hey please look into the issues of neo 320 engine failures . 2 weeks ago another indigo flight.

@jayantakumarborah 6 жыл бұрын

fantastic explanation

@AkeemRWRoss 4 жыл бұрын

Johannesburg South Africa was Nyce Munich Germany was Nyce London UK was Nyce Air Canada Number 1 thank you too the Pilots that got us their and Back. #impressed

@Waddle_Dee_With_Internet 3 жыл бұрын

Non-aviators: **confused screaming**

@Chris_at_Home 3 жыл бұрын

I actually worked there for a year and a half in the late 70s on the assembly floor. 3 generations of my family retired from there. I didn’t like factory work and moved to Alaska.

@Aderin. 9 ай бұрын

I understood, I like planes but I just don't know how jet engines work lol

@sharmatechinfo90 4 жыл бұрын

Nice video very good explanation.. Thanks for video

@htiekmahned8859 Жыл бұрын

So what percentage of total thrust is made up by the turbofan vs. the jet turbine?

@wiccanwarrior9 5 жыл бұрын

Repeat after me...Tur-bine, Tur-bine...Sikhs wear turbans.

@wiccanwarrior9 5 жыл бұрын

In Britain it sounds like he's referring to the Sikh head dress...it's amusing...

@hectichive889 5 жыл бұрын

What? Dude I know he’s got like a tiny Brituish accent or something but no. That’s really not how say it, at least not in American English.

@MAK3212 5 жыл бұрын

Ok that was really stupid and random. Dont know what point you're trying to make here.

@MartinVanBoven 5 жыл бұрын

@@MAK3212 The point that hearing Americanised English can be funny and annoying at the same time to people who actually speak English?

@MeesterVegas 5 жыл бұрын

You take the blonde, I'll take the one in the turban! kzfaq.info/get/bejne/idhxppep06yzipc.html

@chickenychickens5154 2 жыл бұрын

I never knew that there was no motors in turbofan engines

@thenitgroupoff 4 жыл бұрын

The video is awesome. Please what is the artist/sight name of the background song, playing on the background? It is very nice.

@PrajeshMajumdar 8 ай бұрын

Fantastic video, kindly make more and more PW videos...

@goodselections 4 жыл бұрын

Awesome bro!

@engineersbase929 4 жыл бұрын

Thats incredible information! Im actualy in the process of building a jet engine

@roberthertz6634 4 жыл бұрын

Suck squeeze and bang and BLOW. Pretty simple. SURPRIZED it DIDN'T come to market place sooner. Game changer.

@andrerovigatti9997 2 жыл бұрын

I would like to understand : how axes are interconnectet / or not ? Which turbin moves the fan ? Why the last turbin is spining in opposite direction of the big fan ?

@franksulka3346 2 ай бұрын

Great video.

@geagon1392 11 ай бұрын

Great explanation👍

@santinojozefmiller7721 3 күн бұрын

1:39 the background noise. Is that the sound of of the rotor blades of a Bell 206 helicopter?

@kavyabiswa5209 3 жыл бұрын

Gracias .... For this video

@nsambagerald3150 5 жыл бұрын

Viewers out their i would like to know the program used to come up with the animations in this video clip, I will be grateful from your positive response.

@drpoundsign 4 жыл бұрын

The "Cans"...burners...get no glamor, but their design is very important, too

@Deku69420 10 ай бұрын

Jet engine very well explained!

@royshashibrock3990 7 ай бұрын

The animation is great, but one statement in the video is vague if not incorrect. The high pressure air from the compressor section does not "meet a flame." Fuel is injected into the high pressure air stream entering the combustor, and then the mixture is ignited. The resultant expansion of the mixture due to the heat of combustion exits the rear of the engine at high speed.