@@bruno80292 Commercial engine tech here. I garantuee you the tip clearance between the fan and the casing is either 1mm or less. 2mm at most. While the engine is running that is. Believe me. It would blow your fucking mind if i could show you how close those blades are to scraping at the case at speed. (Theres a scrapable, destructible material on the casing around the fan just incase of that. It indicates when work needs to be done on it.) With turbine engines, *clearance. is. everything!* The less tip clearance you have anywhere in your engine, the less air slips by unused, and the better your engine will perform. The compressor blade clearances in the ge9x/ge90 most likely range between 0.5 mm and 1.5 mm depending on blade wear and thermal expansion wear on the casing.
I love how you can feel the ground vibrate sometimes when the GE-90 starts up. Best sound out of all the heavies I see at work. The 787 and A350 engines are nice too but the deep vibrations of a GE-90 cannot be beat.
Starting Engines during boarding? Probably if you fly with gulag air. Usually the planes are starting the engines if there is no person near to the plane/engines
This is the engine speed when you just landed, the reason why the plane is not moving because it's on brakes and there are some objects that wont let it go.
@@arnabnath8428nah 777x has it. Also airlines arent going to waste their time and money on replacing their current fleet of 747's and a380's with those engines due to long term cost(cuz its 4 of the big bastards you have to put on them, so double the engines double the cost). Not to mention the 747 has to have taller landing gear because the engine is so god dam big it has to be angled😂 in order to fit. Its all about efficiency
Can you imagine a 777 with GE90-115 in August 1949 next to a Comet? The engine was wider than the fuselage of the Comet and had 475% more power than the Comet's four engines combined and VERY quiet by comparison.
I remember waiting for flights inside New York JFK and Rome Fiumicino. Those GE90 starts are so beastly loud that they are one of the only things you can hear loud and clear inside the terminal. Might be the greatest jet engine type ever created.
*HA!* You ain't heard nothing yet. This is what's called "ground idle." This is the weakest setting the engine can run at while supplying power to the aircraft systems. Probably like 15%-20% power.
Until passed by its derivative, the GE9X, the GE90 series held the title of the largest engines in aviation history. The fan diameter of the original series being 123 in
How come at 1:30 it sounds like the engine stops ramping up but then the sound comes again a second later at higher pitch? Have noticed several times when flying in a 777.
@@CaptainTransit U mean initially a starter motor and bleed air is used to start the engine to some RPM then the fuel is introduced which further spools up the engine to IDLE rpm right ??
Nothing better than hearing the kids crying and nervous flyer's faces when that rumble echoed through the ENTIRE cabin...it was glorious to operate on them
@@SSaugaCriss Usually if there is a fault with an IDG and your company's MEL (minimum equipment list) allows you to defer the defect. The engine must be at or above idle speed to enable a disconnect via the overhead switch. Disconnecting energizes a solenoid and opens a clutch in the IDG.
@@SSaugaCriss 777 has a pneumatic starter so it must have an air source for ground start. Either APU, ground start cart or doing a X-bleed from the other engine.
heard one starting up at LAX. i was in the parking garage outside the terminal and the sound reverberated through the entire garage. i knew instantly what it was
@@zacharysylvester8349 i watched a documentary about 9/11 and how they hurried the oresident bush with his staff to AF1 and how they were hauling ass out if the airport like a bat out of hell. Apparently they had to alternate fighter jet planes to escort it around the skies because it was going to fast the jets were burning fuel just trying to keep up. I did some digging in around snd i found out that for them to burn fuel at that ratem the airforce 1 had to be going over 550 mph. Which is shocking for a 747. But i think AF1 have a top speed of mach .90 I know. But who are yo dictate to the airforce i suppose. Its all hersay for now. But I do know that current airforce one utilizes two 787 engines for the inner ones and larger engine size of 757-300 for outer. That i k ow for a fact. I spotted airfoce one 1 2 years ago and I didn't believe how massive the 747 engines were. I know what typical 747 engines are. And typical they were not.
@@aky19832001 Wrong. The VC-25A uses four CF6 engines, while the VC-25B uses four GEnx engines. And the C-32 uses two RB211 engines, while the other plane uses CFM56 engines.
Believe it or not, most of the resistance comes from the compressed air in the HP stages of the compressor. But once it's connected power wheels get going, it's a totally negligible force.
That is the Auxillary Power Unit, or A.P.U. for short, running in the rear of the aircraft. It's basically a gas turbine engine that produces electricity and hydraulic power, and also can supply pressurized air to start the engines. Pilots typically leave it on so they can start their engines without needing a Ground Power Unit (or G.P.U. for short).
@@davecrupel2817 oh i understand now.....that was also something that I wanted to know actually....i thought it was like a mini turbo engine like that on a military aircraft
As an aircraft mechanic for over 35yrs years what blows me away is the fact that the 737 sitting in the hangar behind and to the right, has a fuselage diameter approximately the same diameter as the engine cowling of the triple seven!
I've only ever been on board A320s, 737s, Dash 8s and a museum Concorde so it's extremely hard for me to grasp how absolutely huge those engines actually are
The best sound in the world imo. It sounds amazing in video, but it's nothing compared to being inside the actual aircraft during takeoff. This is a beast.
This is a sound I won’t forget as a passenger- on the older British Airways 200ERs I remember, you can literally hear the plastic paneling of the cabin rattling as the engine howls on startup
I'm so impressed that the fan blade tips don't touch the cowling, considering it's only 1 or 2 mm space between them.
i'm pretty sure that is more than this lol
@@bruno80292 maybe not 1mm but it's surely not more than 3mm. I can say that from my own experience because I did walk arounds on a 737.
Indeed, it’s for the efficiency of the engine
@@bruno80292 Commercial engine tech here.
I garantuee you the tip clearance between the fan and the casing is either 1mm or less. 2mm at most. While the engine is running that is.
Believe me. It would blow your fucking mind if i could show you how close those blades are to scraping at the case at speed. (Theres a scrapable, destructible material on the casing around the fan just incase of that. It indicates when work needs to be done on it.)
With turbine engines, *clearance. is. everything!* The less tip clearance you have anywhere in your engine, the less air slips by unused, and the better your engine will perform.
The compressor blade clearances in the ge9x/ge90 most likely range between 0.5 mm and 1.5 mm depending on blade wear and thermal expansion wear on the casing.
@@davecrupel2817 fantastic!
@ 1:10, the extra bass sound is fuel light-up, and around 1:32 when it goes slightly quieter is the air starter dis-engaging. (Ex RB211 Engineer)
Just upgraded my speakers to the Klipsch ProMedia 2.1 THX, and this was one of the first things I tried on them. Not disappointed at all.
@@Daymond42 Glad to hear it was a good test!
Wow thanks alot i had that question from a very long time 😀
I thought it was an electric starter.
@@davecrupel2817 @0:29 start air valve opens, big rush of air!😊
”I won’t need audio files because my PC already sounds like a plane...”
my pc sounds like an f18
@@SanSonT mine is like f-35
You should hear my ps4
My pc sounds like you... but dead.
My like a380
I love how you can feel the ground vibrate sometimes when the GE-90 starts up. Best sound out of all the heavies I see at work. The 787 and A350 engines are nice too but the deep vibrations of a GE-90 cannot be beat.
Nothing compared to the howl of the Avro Vulcan 😏
I once felt a fighter engine start, it was so good
What about the electric saw of the a320?
Tanuj Kumar the startup of a MiG-29 is so cool!
It can even be heard in the terminal or even in the jet bridge boarding a 777
1:10 The deep startup sound during every 777 pushback/safety briefing
That's coming from the plane
There is no operating procedure which allows a commercial aircraft to start engines during pax boarding.
Starting Engines during boarding? Probably if you fly with gulag air. Usually the planes are starting the engines if there is no person near to the plane/engines
I love that sound 👌
Jul1an ramp agents? Only in gulag lol
Omg, this has to be the best sound picked up video of a GE-90 on youtube! 🤤
CJ ye lol
Airport Madness Pro (2020)
Hshdhjakdfkfkkkm
Vxgvnjrufdhdrjfj
Ain't nothin' like hearing the sound of a 777 engine blasting first thing in the mornin'!
I like it late at night when its all quiet and imagine the thrust of more than 77,000 pounds of air in a second from the GE-90
You gotta love it allways
Airport Madness Pro (2020)
Dufhdfhjd {6⃣}
@@itsma._ttt Nah. 747 with the classic RB211, A330 with trent 700, All Boeing 777 sounds are so much better
me: tries to run microsoft flight simulator and google at the same time
my pc fans:
Same here, except it’s World of Tanks
😂
Hats off to the aircraft maintainers who keep these machines airworthy and safe.
Its amazing how fast the engine is spinning even though its only on idle
This is the engine speed when you just landed, the reason why the plane is not moving because it's on brakes and there are some objects that wont let it go.
Emil K. Yes
They blasted the engines to full but the plane isn’t moving because the brakes are on and there are additional ground brakes stopping it
1:50 is about taxi power.
Wait untill you see it at *MAX T/O* power. Boy does it whine and roar like a demon.
Doge Bomber yeah.
Imagine walking in front of this active engine,
It would *suck*
Mr. Artist hmmmmmm
XD PUNS
lol nice one
That's a nightmare
Mr. Artist it would suck yoinks in
The first time I went on the 777 I was shocked by the size of the GE90. didn't know it was the biggest jet engine ever but it was really cool to see.
Wait until you see the GE9X...
@@notleks2411anything bigger than GE90 is only suitable for a380 or b747.
@@arnabnath8428nah 777x has it. Also airlines arent going to waste their time and money on replacing their current fleet of 747's and a380's with those engines due to long term cost(cuz its 4 of the big bastards you have to put on them, so double the engines double the cost). Not to mention the 747 has to have taller landing gear because the engine is so god dam big it has to be angled😂 in order to fit. Its all about efficiency
They should link this sound up to electric cars, everyone would buy one then lol
Porsche Taycan: wants to know your location.
Allow *Deny*
What?
Airport Madness Pro (2020)
Sdhdggdhsheie
@@user-pl1nn5ch9m ?
Link a gas engine car with aftermarket turbos, no electric motors.
Can you imagine a 777 with GE90-115 in August 1949 next to a Comet? The engine was wider than the fuselage of the Comet and had 475% more power than the Comet's four engines combined and VERY quiet by comparison.
Wet dream of plane engineers of 1949
That's actually insane.
The only thing i'm hearing is a ps4 startup
All I’m hearing is that one kids mic
Mine whilst sat in the lobby screen in call of duty modern warfare
Literally 🤣🤣🤣
Sony Airlines.
EXTREMELY relatable.
Whenever I'm on a 777 I could feel the vibrations from this beast
0:48 put earrape over that and your ears would be dead in a nanosecond
Focus very closely on the center of the engine. Now I'm going to snap my fingers, and when I do, you're going to fall asleep.
Hahahaha 🤣🤣🤣🤣🤣
👁👅👁
This is the avgeek version of an ASMR video. Love it!
I remember waiting for flights inside New York JFK and Rome Fiumicino. Those GE90 starts are so beastly loud that they are one of the only things you can hear loud and clear inside the terminal. Might be the greatest jet engine type ever created.
Maybe. IMO nothing beats the sound of an RB211!!! It’s raucous
What the RR had that made it cool was SMOKE!
And this is only at idle thrust. I love GE90s
Mee too.
*HA!*
You ain't heard nothing yet.
This is what's called "ground idle." This is the weakest setting the engine can run at while supplying power to the aircraft systems.
Probably like 15%-20% power.
@@davecrupel2817 you are wrong. Ge9x is now the strongest engine ever somewhere from 100,000 pounds of thrust following the Ge90 and then Genx.
@@davecrupel2817 well anyways you are half wrong and half correct.👍👍👍
@Muslimcel you are indeed correct.
That whole engine and cowling is almost the same size as a NYC Flat. A man thats 5ft 8" can stand in the intake. Gigantic
1:11 my favourite sound
I used to work in the bagwell for dnata at SFO, and I never got tired of hearing a 777's GE-90s spool up. The feeling of the vibration was insane.
“Sir our engine failed!”
“Don’t worry I have a crappy PC”
Me: turn on max quality in minecraft
My pc sound:
This is so cool, you can hear the rate of rpm the compressor blades are at as the engine is spooling up before stage one even starts to move, so cool.
I love the sound it makes when the air goes through the gearbox to spin the blades
Damn this sound brings me back to working inside the fence at LAX, its really a sound you feel more than hear, especially 1:10 to 1:38.
What a magnificent engineering .
I’m impressed by how quickly it speeds up.
Heartful thanks for uploading this Jim!!
My pleasure!
Nobody:
Literally nobody:
My PC fan when my PC is not in use:
@Joshua Reape 😍
Airport Madness Pro (2020)
Dhdhhddj Gdhjdjjsk Zhdhcjj5⃣0⃣
@@user-pl1nn5ch9m the fuck?
@@tanmaychat5802 I'm glad someone else caught how questionable that comment was.
@@user-pl1nn5ch9m ????? What
Still after many years the 777 has been in service the engine start up is so sweet to hear...inside or outside the aircraft...
Nice video. I love it when the deep bass starts to kick in. ☺️
Bass drop sound around 1:10. It’s even better inside the plane or inside the terminal where it can most always be heard loud and clear
Something about jet engine sound is just so fulfilling and satisfying to me
Same😎
Alternate title: 2 minutes and 50 seconds of relaxing sounds for sleep and study!!
Sounds like my 2020 macbook pro 16 when doing nothing.
Darude - Sandstorm
lol this jet is nothing compared to my 2017 13 inch when im doing nothing too
never get tired of hearing this
THAT HOWL OF A GE-90 STARTING MELTS MY HEART ALL THE TIME😍🥰💕
Amazing, especially at the 1:11 mark when fuel is being done injected into the combustion chamber.
The CF6 does have a deep sound, but nowhere near as deep as the GE90
@@ag6371
The new GE9X even sound ultra Better.
Its like roaring..
Its alot Better for sure
This gonna be a perfect ringtone :)
The sound is just amazing😍😉
It is satisfying to actually hearing the oil turning the engine on from the electrical motor.
0:30 The Tornado alarm just went on time
nice
amazing
@@mjt777x8 THX
The GE-90 engine is the size of a 737 body ;-;
No wonder they call the 777 a mini-jumbo
That roar is just music to my ears😍👏🏻👏🏻👏🏻
the ge90 sounds crazy starting up especially inside the cabin
Until passed by its derivative, the GE9X, the GE90 series held the title of the largest engines in aviation history. The fan diameter of the original series being 123 in
My computer fan when I play games in online class:
That humming sound ♥️👌
The sound of powerful freshness!
How come at 1:30 it sounds like the engine stops ramping up but then the sound comes again a second later at higher pitch?
Have noticed several times when flying in a 777.
Introduction of fuel into the system. This is when they start to burn.
I noticed that on the 737 Max engine too
@@CaptainTransit U mean initially a starter motor and bleed air is used to start the engine to some RPM then the fuel is introduced which further spools up the engine to IDLE rpm right ??
@@CaptainTransit The fuel is injected way earlier, its when the bass starts, the sound at 1:30 is just characteristic as far as I know.
Ralf XIV it is very deep that it gives a vibrating effect in the cabin
Congratulations, you just recorded a fan
How a fan blow towards you
I love the way it groans into life
Nothing better than hearing the kids crying and nervous flyer's faces when that rumble echoed through the ENTIRE cabin...it was glorious to operate on them
Disclaimer: this video is in partnership and paid by FedEx.
Ok.
Not
No connection to FDX
I had to have the Left IDG (Integrated Drive Generator) disconnected before flight. To do that the engine had to be started, not motored.
can you elaborate on the reasoning or purpose ?
@@SSaugaCriss Usually if there is a fault with an IDG and your company's MEL (minimum equipment list) allows you to defer the defect. The engine must be at or above idle speed to enable a disconnect via the overhead switch. Disconnecting energizes a solenoid and opens a clutch in the IDG.
@@bradw3116 fascinating, thanks.
can a 777 be motored on bat or do you need the apu?
@@SSaugaCriss 777 has a pneumatic starter so it must have an air source for ground start. Either APU, ground start cart or doing a X-bleed from the other engine.
heard one starting up at LAX. i was in the parking garage outside the terminal and the sound reverberated through the entire garage. i knew instantly what it was
Beautiful.. Just Beautiful...
My intel core i3 when I run GTA 5
Just listen..the sound...this thing coming alive...
damn it, I love that humming noise from the GE90 engines when starting😍🎶
Man dat boi goin’ fast!
Could you imagine having 4 of these on a some b747 variant. I heard that they were doing this for Airforce 1.
So inefficient to do that though.
Yet so redundant in case of mechanical failure. That’s THE airplane that you don’t want to crash because of engine failure!
@@zacharysylvester8349 i watched a documentary about 9/11 and how they hurried the oresident bush with his staff to AF1 and how they were hauling ass out if the airport like a bat out of hell. Apparently they had to alternate fighter jet planes to escort it around the skies because it was going to fast the jets were burning fuel just trying to keep up. I did some digging in around snd i found out that for them to burn fuel at that ratem the airforce 1 had to be going over 550 mph. Which is shocking for a 747. But i think AF1 have a top speed of mach .90 I know. But who are yo dictate to the airforce i suppose. Its all hersay for now. But I do know that current airforce one utilizes two 787 engines for the inner ones and larger engine size of 757-300 for outer. That i k ow for a fact. I spotted airfoce one 1 2 years ago and I didn't believe how massive the 747 engines were. I know what typical 747 engines are. And typical they were not.
@@aky19832001 Wrong. The VC-25A uses four CF6 engines, while the VC-25B uses four GEnx engines. And the C-32 uses two RB211 engines, while the other plane uses CFM56 engines.
@@zacharysylvester8349 Use two GE90s on the 74'
Considering how much the turbine and compressors weigh it surely does accelerate quickly
Believe it or not, most of the resistance comes from the compressed air in the HP stages of the compressor. But once it's connected power wheels get going, it's a totally negligible force.
got hypnotized looking at the spiral thingy
That *MUST* be there or otherwise ground personnel can be sucked onto these beasts kilometers away
The roar of the GE90. I was sadden when I was on a 772 with United and only got stuck with the PW4000.
Isn't technology terrifying
@Elisha yup
Or blow things over if you're not careful ;-)
you forgot the words: sometimes or quite
don’t get close, or get mushed
Excellent shot
Perfection of engineering
This is the shit. OOOhhh yeah this is it. This is what I've been craving.
Get a life
I have always wondered where the sound of the aircraft comes from although the engine is off
That is the Auxillary Power Unit, or A.P.U. for short, running in the rear of the aircraft. It's basically a gas turbine engine that produces electricity and hydraulic power, and also can supply pressurized air to start the engines. Pilots typically leave it on so they can start their engines without needing a Ground Power Unit (or G.P.U. for short).
@@davecrupel2817 oh i understand now.....that was also something that I wanted to know actually....i thought it was like a mini turbo engine like that on a military aircraft
The 777's APU is powerful enough to start these beasts with a flick of a switch
It's beatiful when you can hear that the fuel come in.
As an aircraft mechanic for over 35yrs years what blows me away is the fact that the 737 sitting in the hangar behind and to the right, has a fuselage diameter approximately the same diameter as the engine cowling of the triple seven!
I've only ever been on board A320s, 737s, Dash 8s and a museum Concorde so it's extremely hard for me to grasp how absolutely huge those engines actually are
I remember boarding a budget airline aircraft and hearing one of these I'm a background
Cool, the story of a background who boarded a budget airline plane and heard the engine.
@@GunsNGames1 in the bg
this noise usually does my ps4
much more impressive when listening to it directly at the airport
I love the startup on the JET TURBINE ENGINES on the BOEING
When you start up modern warfare:
Wait till you hear the take off spool up from this engine.
The best sound in the world imo. It sounds amazing in video, but it's nothing compared to being inside the actual aircraft during takeoff. This is a beast.
A real "kick-in-the-pants" is a lightweight 777 combined with a MAX power takeoff. 330,000 pound jet and 220,000 pounds of thrust. Amazing....
Nice video!
Best video by far
Those blades are asking for a watermelon
Are the FedEx pilots also in such a hurry than the truck drivers in europe? :D BUT nice sound
You know what's painted on the cockpit..."The World On Time!"
The sound is a music to me ❤
That's so beautiful 😍!
Turbine engines suck...
everything in from water to birds: they are so powerful.
Definitely a PS4
In defense of turbofans. That’s an overexaggeration
This is simply phenomenal. Oh my god. J in my P.
I love how Criterion Games used this for the boost sound effect in Burnout Paradise. Cool touch by the developers!
I love this sounds so much it shakes the entire plane i love it😍
had the pleasure of flying on the 777 twice over the atlantic
This is a sound I won’t forget as a passenger- on the older British Airways 200ERs I remember, you can literally hear the plastic paneling of the cabin rattling as the engine howls on startup
Amo quando é acionado esses motores 777
this is music to my ears
It’s a really nice jet
Just beautiful!
Thanks! This is my new alarm
Aztec Death Whistle typa sounds with that bleed air