When Water Gets Into a Jet Engine
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- čas přidán 6. 09. 2024
- #NotWhatYouThink #NWYT #shorts
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TBD
Footage:
US Department of Defense
Note: "The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement."
I work on Jets and our "Special cleaning system" for the engines is a water hose
Was it more of a low bypass? I could see that happening with only a hose but still gotta turn it though
High-tech hose
Probably some very special hose which costs the government 20k per piece but you could get the same one at Home Depot for 10 bucks
"Military-grade" Hose
this made me laugh way more than it should've
Water injection used to be used in older turbo jet engines for a boost in power.
Yes, it increases the temperature difference within the engine, which increases it's Carnot efficiency.
@@rfvtgbzhn The >800-fold expansion due to the phase transition probably doesn't hurt with thrust either.
@@xitheris1758is this basically "water into hot place =steam?
And the volume expansion of said steam adds thrust?
@@xitheris1758
If you're talking about the water expanding into steam then yes, that's part of how it works, by adding thrust from the water expanding into steam but that's still only part of it, there's people here in the comments that are arguing that military jet aircraft like the B52 that used water injection to take off heavy from shorter runways had turbo jet engine's and these are turbo fan engine's that are different, true but the fact is even though they operate somewhat differently water injection has still been used on turbo fan engine's, Air Force One has the system fitted on it's engine's so the President can get out of Dodge that much quicker, some KC-135's also have the system fitted on their engine's for heavy take off's and even some turboshaft engine's have used it like the top secret Hughes 500P helicopters dubbed "The Quiet One's" that were secretly modified for a top secret CIA mission into North Vietnam during the Vietnam War had water injection for emergency power.
If you've never heard of that one do yourself a favor and Google "The Quiet One's Helicopters", it's a story that between all the skullduggery used to keep the special modifications made to the helicopters to make them quiet a secret in America during it's development it's as comical as it is fascinating and is the kind of thing that would make a great movie.
@@wormbo2 Yep. That's the idea.
They still have not figured out how to redirect a goose when traveling into an engine.
The goose gets redirected into a plurality of trajectories at a very high spatial frequency.
That's just a fancy way of saying that the goose gets ripped to shreds and flies out the other end.
@@xenoflame191 you got my joke, good job! 👏👏👏🫶
@@stevendoesburg6555😂😂my type of humor, good one.
@@stevendoesburg6555wow that's such an intelligent yet humourous comment ❤
Funny, the B-52 bombers models D-G use water injection for thrust
Well, those are turbojets, and the injection system is built directly into the design and finely tuned to perform its job properly
Turbojets? They’re J57s & yes the demineralization of water used for injection for thrust. Commercial engines are turbofans
Has something to do with cooling down everything
It is indirectly related to thrust. The water injection system lowers combustion temperatures and thus allows the engines to operate at a higher power setting for longer. This is why the B52s exhaust is so smokey on takeoff.
KC-135 tankers do this too for extra thrust on takeoff.
The engineering used in airplanes is mind blowing
I work at the airport and watch them take off every minute or 2 and it’s mind blowing for real
decades of technological advances in so many fields merge perfectly to create aircraft.
But greed and cutting corners can still cause problems regardless of engineering (Alaska Airlines 261)
"We're in a vertical dive here." 😢
Whitetech.
Actually, rain water can shut down a jet engine in flight, which is why the engine ignition is usually turned on during flight in rain. The early model of the CFM56-3 engine was susceptible to flameout in very heavy precipitation. A redesign of the fan spinner and a higher N1 idle speed were required to fix the problem.
Also, larger diameter fans mean more centrifugal force, which means heavier particles, like water droplets are more prone to get thrown outwards towards the bypass ducts. It's the same principle as on a cyclone vacuum cleaner.
Continous Ignition is mainly a precaution. Airliner turbofans are water tested and must maintain operation while ingesting heavy amounts of water.
Planes with older engines sometimes had a water injection system to inject water into the turbine core to boost thrust.
There were cases with older engines flaming out from rain and hail, but those tended to be in non standard configurations or had other contributing factors. Designs have improved and it us extremely unlikely for water ingestion to cause a flame out. Still, there is no reason not to be safe, just incase. Hence, continuous ignition.
The amount of rain you’d need to truly drown out a modern turbofan is ludicrous. We are only instructed to use continuous ignition if it’s heavy rain. There’s more of a chance the igniter is flamed out due to lightning. Even then the FADEC will sense a flameout either partial or completely and command both igniters to fire continuously.
Airplanes are definitely top 3 of greatest inventions in human history!!
Electricity
@@shadowgojirono one invented electricity 😂
Vaccines. Small Pox was highly infectious and had no cure. It wreaked havoc on human populations for thousands of years. When a reliable vaccine was invented it was hailed as the greatest thing that man had ever done.
2) steam locomotive
3) laundry washing mashine
@@RX7FDfreaklol jokes on you. Who created the powerlines, transformers, power stations
Etc
Etc
Etc
Love seeing those vortexes (vortices?) When turning jets on the flight line.
Vortices. 😊
Then you would have loved the he F16. When a viper is sitting at idle, and there is any moisture in the air or water on the ground, it creates a tiny tornado. I’m sure there are many videos that show this.
It also picks up F.O. (Foreign Objects) nuts, bolts, screws, washer, which can destroy the engine. Thats why in the USAF we have a ritual, every shift change, first thing wr do is “FOD Walk”. Look it up. Its boring as hell. But needs to be done.
@@dr.robertjohnson6953 oh I am aware of FOD walk downs. Im in the navy and have been to so many I found some metal fod. I even found glass from the line shack’s fuel containers.
@@dr.robertjohnson6953oh, I forgot to mention, I worked on EA-18Gs. Basically, just a super hornet without a gun.
@@100GTAGUY we know. We got safety guidelines for the fresh-out-of-boot folks.
Bruh 12 man hours? They wash the engines on our S-92s in like 20 mins, washed rinsed and dried
I mean, 36 men working for 20 minutes is 12 man hours
How do you not understand man hours.
I built and maintained the S92s and cleaned the engines many times we sprayed a soap concentrate in while turning the engine over let it sit awhile then rinsed with fresh water then ran the engine to dry it ! Cleaning also keeps your power up to par.!
@hyrumzaugg5749 nah fam, literally 2 people. 1 mechanic and 1 pilot
@@jaddbo8230look at this guy. He uses a pilot instead of a 2nd mechanic. Also yeah comp wash takes 2 man hours tops if you and the other guy arent goofing off
Rocket engine: step aside kid this is not for you
People thinks it's chem trails...In reality it's actually water that's picked up from the atmosphere and redirected trough the engine.
Granted, what goes in also goes out, but when you burn jet fuel with oxygen, you get carbon dioxide and high temperature water vapor (steam).
The chalk line people see is actually ice when the water vapor flash cools. If the atmosphere is humid, the line will stick around, if its dry up there it will vanish.
@@pavanbiliyaror crop dusters
But water is also a chemical, so technically....
strawman argument 😡
Technically you are right and wrong, because water is a chemical, as it consists of matter that has interacted and formed a compound, which is the definition of chemistry. Also the fuel used, has water vapour as a byproduct, so the chemistry even happens during operation, so some of the water vapour is not from the atmosphere itself but from the fuel combustion process.
But yes it is not an artificially created chemicals for altering the atmosphere as the conspiracy theorists believe it to be.
Engine - i fear nothing
Engine when 🐦 - 💀
The engineering behind engines is just insane.
Whoever invented these land,air,sea transpo are awesome
Jet engines should never miss soap day.
You know, I'm just going to say what everyone else should....
I appreciate all your research and how entertaining your channel is! I always learn something! Thank you!!!!
It helps removes bugs that get stuck on the turbine blades.
Don’t know why I expected something different but I always seem to get airplane disaster videos or shows a day before I’m about to fly which is often
On the Skydive Hawaii King Airs, we would open places on the engines to flush the salt out. Then a short run up to dry everything out. Maybe 1 hour per plane..
The little tornado was awesome😉
One thing the video doesn’t clarify, is the difference between low bypass and high bypass turbofans. High bypass turbofan the majority of any water that got sucked in would go through the bypass because 80% of it’s airflow is all bypass whereas the other 20% is core flow so in theory, most of the water would end up in the bypass. Low turbofan though, the majority of the water is going through the core, and the end result is usually just lower EGT temperatures. It will take a massive volume of water ingested at one time being ingested to cause a problem which most likely would be a compressor stall.
And most washes, the water is usually introduced through dummy ports or fan discharge temperature sensor ports (after the fan stage) because the primary focus is washing the last several stages of the compressor, high pressure turbine/nozzles, low pressure turbine/nozzles, and combustion chambers because that’s is where the majority of carbon build up happens. The objective is to maintain proper cooling airflow, prevent hot spots, and increase the engine’s time on wing.
This one was honestly not what I thought. Bravo.
Water actually helps the efficiency of the fan, because it reduces the gap between the fan blades and the housing, as the water is flung out.
Yeah, that’s not how that works 😂
@@thatmitchellguy7687 and yet it does.
@@rolandotillit2867 Please explain, I’m curious. Since the gap between fan blades and the fan case is no greater than .80 of an inch and decreases during operation due to centrifugal force and heat, hence the purpose of having rub strips/seals between the case and the fan for that purpose. Or are you talking about the compressor where the clearance is a lot tighter? Or let me guess you’re talking about the gap between each of the fan blades itself? The same gap that will never change due to the locking of the mid-span shrouds? 🤔 Guess you never disassembled and engine or troubleshot temperature trends before huh? And the fan is free floating driven from the rear by hot gases of the HPT via the LPT, how would water make the fan efficient? But please, tell me more, this MFE vet would love to know.
@@thatmitchellguy7687 Because by reducing tip to hub clearance you get less separation in the fan blades. It's like lowering the ride height on a car.
@@rolandotillit2867 well for starters, that’s a bad analogy to use when talking jet engines considering that lowering a car’s height is that you’re lowering the frame in relevance to the hub. Speaking jet engines in that analogy the fan’s rotor would be the hub and the blades would be the tire, clearance change from the fan to the casing would be by you adjusting the casing‘s clearance and relevance to the fan. However, that’s not how clearance is achieved. But back to the matter of hand, the fan blades are attached to the rotor which is fixed and balanced and rainwater is not changing the clearances of the fan compared to casing. I’m not sure who’s feeding you that or led you on a wild goose chase but that’s not how clearances work and how water is processed through the engine. I’ve done plenty of runs in the rain, compressor washes and my fair share of teardowns, somebody led you astray. But to each its own🤷🏾♂️
This is actually the same system they use when they need to clean Lizzo up.
Only place to learn such things. Bravo!
Shout out to all the engineers from the world who clean out the jet engines on planes regularly to keep flights going, so people can continue flying around the world. I had no idea this kind of maintenance needed to be done.
Aero planes are so mesmerizing
Rolls Royce engines are always best than other engines.
Should add, "Except Boeing."
You’d think you’d make a bypass valve for birds
If they added a net, it would drastically slow down the plane
The existence of man hours implies there are animal hours as well
Centrifugal force from the primary fan throws the water out to the periphery to be ducted out.
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You can tell who in the comments has never worked in aviation because they say stuff that's obviously complete crap.
Well, the problem of course is that "you" might not be able to tell, because if you don't work in aviation you won't know what's BS and what's accurate. It's sad that people are so anxious to pass on something they heard that they just say it without checking if it's right. And then someone hears it and has no way to know if it's true because they have no experience or context to make a judgement.
So true. A lot of CZcamsrs are or claim to be “pilots” so they can tell the world about what the know. Sadly most of it is inaccurate but they get the “wow, I didn’t know that - thanks man” from those that have no clue
It's actually terrifying how much misinformation out there, completely out their ass one way or another. I don't bother try to correct anyone anymore, I chuckle and move on.
Enough water can mess with them trust me.
water can improve efficiency by making the air expend more. some jet engines inject water like early b52s
Some aircraft have interior connections that you pump soap and water through to clean it.
You're right, it is not what I think. Because I did never think of that before.
Seems like a good thing they are this way, that way they don't spray all that crud onto people below.
Water would increase the engines power and you'd go faster. 😊
The bypass duct moving water away is a secondary use. It’s mainly there to use the big fan at the front of the engine like a propeller for better gas mileage.
That vortex was cool at the beginning
it also does increase thrust of the plane, because the addition of rain water increase the mass that is being accelerated out of the engine, adding more thrust
I hate the format of videos where it's assumed that the viewer doesn't know shit. This explains the process but was actually exactly what I thought it was.
Your presentation is very unique, knowledge driven.
Yo why would they shadow ban NotWhatYouThink
Cause he sound like Patrick BenDavid
What are you talking about??
He ain’t a sellout that’s why
What?
the channel is absolutely not shadowbanned
Thank you for sharing.😊
Imagine the brilliant minds that built this! Wow!
when water gets into a jet engine...
nothing out of the ordinary happens
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Venice is so beautiful!
Is this video being blocked somehow? Shorts on this channel usually have hundreds of comments by now. 🤔
It's been 40+ minutes, and there's only 10 comments.
EDIT: I figured it out. They shadow-banned the video because he said "man hours".
CZcams probably shadow banning it who knows
Fr
Wtf are you on about
Was wondering what it was for
@@0741921new around here huh
That is not true…
The compression stages of the engines don’t separate water, but the increase in pressure increases the temperature which in turn evaporates the water.
The pressure wash in front of the engine uses not even 5% of the normal engine speed to was the core…
I always say it gives it more proportion. It has something to push off of. Probably what they do to jet engines anyways add something so it expands.
Gotta respect the York Peppermint Pattie-branded jet engine, they're really moving up in the world.
Nice! An Untimely fact. Thank you.
A similar approach can be taken with piston engines. Lightly dribbling water or preferably mist into the intake after the air cleaner can help clean carbon out of the engine. Not really necessary though - usually only done a) on worn-out, carboned up engines and b) if the owner cares to do it. I've done it just for grins a couple of times
It uses the bypass to also help keep the turbine cool!! It has its own cooling system but it can fail and still remain cool at high altitudes because of water moisture in the clouds and the thin air.. so if the cooling system fails mid flight its not the end of the world nor will it destroy the turbine engine unless you are on the ground and running it.. its a cool way of having redundant cooling system without carrying extra hardware and coolant reservoir and the extra coolant.
@@100GTAGUY yeah makes sense lol but the way I was taught electromechanical engineering when I did my schooling that no opportunity is wasted.. idk a thing about jet engines but in every mechanical system is designed with redundancy so I would think that the water drain would be used as extra cooling because it's not really that hard or extra complex to use a natural issue to help when possible. I would as it would be my first thought as to what can I do with this fluid on its way through the engine.. might as well use it if possible
So much respect to the aviation engineers desinging this.
Thats why D.E.I. should have no business in engineering. Hiring on merrit only. Competency not identity politics.
When I think of it. D.E.I. should have no business in anything.
This job looks fun.
The water actually increases the performance of the engine, because it increases the weight of the matter being exhausted out the back lmao
Some water gets inside the core of the engine, just like air does. It's true that it doesn't wash it properly, as it gets instantly vaporized in the core due to very high temperatures. Plain water also doesn't wash an engine properly, you need a special detergent to clean the carbon deposits and gunk.
This is called “engine wash”. It’s very simple like the video shows but my company has never done it with soap surprisingly. Normally, it’s two engine runs while the hose shoots pressurized water inside. We set up a tarp on both sides of the engine and there’s a drain on the bottom for collection. It’s the two runs with the hose and then one without to dry.
Looking at a cross section of a jet engine is gorgeous.
Like the most beautiful looking thing humanity has created.
Whenever I watch water get sucked into a jet engine; I cannot stop but think about Major Grants demise at the end of Die Hard 2
Wood chipper feeling here 😮”ehhhhhhhhh kchhhhhhhhh brrrtttttftt clink! ping ping ping ping ping 💥 💨”
That’s why the cone of the engine is so pointed. Direct it around from the internals
@NotWhatYouThink I go out of my way for your content, keep it up despite CZcamss antics
Pratt and Whitney PT6 es also have a crank and garden hose periodic cleaning procedure. Some owners have left this up to their kids.
Thank God I will buy some airplanes for myself
Oh, some parts of the engine surely do get partly washed when flying through rain, particularly, the turbofan blades. We used to purposely fly through rain showers or small cumulous clouds during our carrier flying missions to give the windscreen, airframe, and fan blades a nice freshwater washdown.
The apparatus shown here does the complete job for the entire engine.
If your wondering how it does this, water is orders of magnitude heavier than air, using the same process your vacuum cleaner uses, i takes centrifical force and seperates heavier water from air.
The was not always the case. Especially the older CFM56 in the seventies and eighties where in constant danger of getting a flame-out in heavy rain and needed to be switched to continuous combustion with spark plugs always on on rainy days.
Just amazing what humanity has invented these last 200years
Flying a jet engine through rain/water will give it some unofficial power too, just through the cooling effect.
That is not a bypass for water. That is a basic turbo-fan power plant. The water is too insignificant to the extreme pressures in the combustion chamber. The AV-8B Harrier has a water system to inject directly in the combustion chamber for hovering… keeps the engine temp down.
دخول الماء إلى محرك الطائرة يسبب أضراراً للمحرك وتقل كفاءته إلى الحد الأدنى لذلك من الصعب أن تطير الطائرات في الأجواء الممطرة
Nice work 👏 👌
I work for this company it does not take 12 man hours. I’m not sure where you received this information, but a single engine wash takes 30 minutes on avg per engine
That is just amazing to see the water sucking in the water from the ground like that😮
It is basically bathing the engine as long as water is present so that the engine stays fresh. That's why jet planes are so cheerful when flying in the rain.
It can give it more thrust
Then you have to run the engine on high thrust setting for some time or bleeds off take off to avoid smoke buildup from air conditioning as it sucks it up into flight deck and passenger cabin.
We only run ours on idle for about 30 minutes. During the run we use engine anti ice and wing anti ice to clear the water out of the system. And yes, the next take off is recommend to be bleeds off
12 man hours, I would reassign you, @ Delta! lol
Worked on all sorts of jet engines all my life and what you said was complete bollocks!
Battle hymm of the soul is a banger 🔥
I didn’t think I’d end up watch a short of a plane getting bathed tonight, but here we are! life happens fast lol
The centrifugal force causes the water to go along the walls.
Ah I remember the good ole engine wash days on the carrier 🥰
The infographic shown is partly wrong. Worked as an engineer who analysed performance and stress of RR Trent engines.
Water from rain is ingested by core stage (bypass stage is outside the core) as well and is completely ok, as the thermal efficiency is barely affected by this. What matters is the pressure, and if the pressure is maintained in the initial stages (compressor), the combustion occurring in the combustion chamber can easily surpass the surface of the sun (temperature wise). Pressure and temperature is directly correlated. Bypass has got nothing to do here.
I always wondered about this and thanks for the professionals in the comments
Centrifugal force dries the air prior to entering the compressor section.
An engine running in idle can indded flameout in heavy rain.
I can honestly say that I’ve never been like
“Damn that’s a lot of rain, I sure hope it cleans this jet engine while we fly”
I think I remember washing and conserving the ones we had on our ship. Now I’m not sure anymore.
The engine runs on air and water being compressed.
Not liquid fuel. This is the correct answer
So why can't i spray water and soap in my engine bay 🤨😂
Fun fact if water also gets in their and turns into steam it could add more thrust
Jet engines can be flooded if they ingest enough hail. There was an incident which resulted in a redesign
Up next: What happens when the right size of water droplets get in the turbine, mid-air.
But there is a benefit of rain water, it generates more thrust and serves as a coolant to the turbines from overheating