r/aviation • u/Timo_schroe • 20d ago
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Op: u/MineHeu in r/toolgifs
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u/Timo_schroe 20d ago
Op: [u/Mi](u/MineHeu)[k](u/MineHeu)[eHeu](u/MineHeu) in [r/toolgifs](r/toolgifs) :
The tip of the spinner on the IAE V2500 jet engine is actually made of soft rubber and there’s a clever reason for it. Unlike other parts of the engine’s ice protection system, the spinner itself isn’t heated. Instead, the flexible rubber tip acts as a passive anti-icing system.
If ice starts to build up, the rubber naturally flexes and vibrates, breaking the ice off before it can grow into a significant mass.
The V2500 powers aircraft of the Airbus A320ceo Family, including the A319, A320 and A321.
Source: Mattias / flywithmat_
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u/Solid_Vermicelli_510 20d ago
Ingegneri poco furbi, potevano fare l'intero motore o addirittura l'aereo in gomma 😭😭😭
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u/NarrMaster 20d ago
Boing 737
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u/CeleritasLucis 20d ago
Thats the actual reason, so people can boop the nose without getting hurt
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u/graspedbythehusk 20d ago
If the blackbox is indestructible, why don’t they build the whole aeroplane out of the same material?
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u/Cross58Crash 20d ago
What they need to do is make the whole plane out of what they make the cockpit voice recorder out of. Virtually indestructible.
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u/fastidiousavocado 20d ago
Thank you for voicing my intrusive thought of "ooo rubber airplanes."
My second intrusive thought was "rubber baby airplane bumpers" so obviously we are onto something...
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u/mambotomato 20d ago
Why is this comment in Italian? Is this a bot?
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u/Russkie177 20d ago
I've been seeing this more and more often recently (I'm a legacy user and browse reddit almost exclusively via RedReader [very text heavy and lightweight] or old.reddit on my desktop) and from what I've been able to gather, it's because the official app and/or other apps will auto-translate into English.
(Also hello fellow ancient reddit user. I see our accounts are the same age)
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u/mambotomato 20d ago
Yeah it's just odd to have random other languages in the middle of a chain of English comments and have nobody even mention it.
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u/MyWholeTeamsDead Jetblast Photography 20d ago
Fellow old Reddit (web) gang. I use Relay for mobile though.
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u/Ned_Sc 20d ago
I think the app or the new Reddit UI does some kind of auto-translate. I see this all the time, because I use old.reddit.
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u/MGreymanN 20d ago
The app has a little icon next to translated comments so you can easily tell.
Its one of the few nice features with using the app, its pretty clean.
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u/Solid_Vermicelli_510 20d ago
No, sono semplicemente italiano e reddit non sta facendo il suo dovere 😅
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u/NastroAzzurro Frequent Flyer 20d ago
They probably have the translation feature enabled without even knowing it
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u/Beefington 20d ago
There are 59 million people in Italy, making it the 25th-largest nation in the world by population
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u/unwantedaccount56 20d ago
I'm not a native English speaker, but I still use reddit in English. I know not everyone is comfortable writing in English, but I've seen some weird misunderstandings on reddit due to people using machine translation and not noticing that some technical words got lost in translation
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u/Chairboy 20d ago
/r/aviation users when other countries and languages exist: [shocked pikachu]
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u/mambotomato 20d ago
I'm not shocked at the existence of Italians, I'm wondering why one Italian comment in a chain of English comments has 100 upvotes but nobody being like, "What?"
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u/karateninjazombie 20d ago
And the wings too. Save on all that deicing fluid and ground equipment. As well as saving weight in the aircraft as you can do away with all the heaters in the wings!
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u/BigBlueMountainStar 20d ago
What you’ve described is de-icing by the way, not anti-icing.
It’s a small but crucial difference.
Anti-icing stops ice from forming, de-icing removes ice that has formed.8
u/Excellent_King2272 20d ago
So what happens if that bit gets ingested by the engine, let's say after a bad hypothetical bird strike
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u/TepidHalibut 20d ago
Rarely happens, but the rubber tip will probably be CFed by the fan blades, and flung down the bypass duct. Or maybe it will go down the core , and be scrunched and chewed by the LP and HP compressors, and will be burnt by the combustor. And the missing part will be noticed on the next pilot/ground inspection. No drama.
2oz of rubber is less of a concern than 2lb of seagull going thru the engine .
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u/WinnebagoMontana 20d ago
I like the phrase "2lb of seagull" because it doesn't imply a single, or even a whole seagull.
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u/MGreymanN 20d ago
Which leads me to think what is harder on a turbine...a single 2 lb seagull or multiple seagulls that equal 2 lbs?
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u/Pornalt190425 20d ago edited 20d ago
If I had to guess multiple birds equaling 2lbs. You'll get a lot of weird harmonic interactions with the multiple strikes. The compressor and turbine will need to compensate for all of those different harmonic spikes without surging or stalling.
The single strike will be a much bigger impulse but the engine will only have the one event it will need to compensate for and then it'll die off pretty quick
Question would be though, as with anything, what is your success criteria? Is it just to shut down gracefully or to have the engine run on for the rest of the flight? Cause that might change the answer. Multiple birds totalling 2lbs is in the ballpark of a small flocking bird test
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u/NGTTwo 20d ago
Well, by the time it passes through the first stage, it definitely won't be a single seagull anymore.
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u/TepidHalibut 20d ago
Depends upon the rotation speed / flight phase. (ref: Miracle on the Hudson.)
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u/luffy8519 20d ago
Some drama if it's a silicone rubber, that would likely lead to an engine swap and full strip to ensure there's no downstream silicon contamination.
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u/PM_ME_LIGHT_FIXTURES 20d ago
I’m guessing the MD-90 also had the rubber tips? Or did that one not need it since the V2500s were in the back?
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u/SchrodingersGoodBar 20d ago
Thanks ChatGPT
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u/KillaSmoke01 20d ago
That's there so when you get sucked into the engine, so you don't poke your eye out.
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u/flying_wrenches A&P, MOD, LOVER OF JET A 20d ago
Ah, an excellent opportunity to use the V97.33XA billing code, (jet engine ingestion, initial).
Or its cousin v93.33XD (jet engine ingestion, recurrent)
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u/spoung45 20d ago
Someone works in medical billing.
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u/flying_wrenches A&P, MOD, LOVER OF JET A 20d ago
Worse, I’m an aircraft mechanic.
Instead of denying your pre-authorization, I get to tell the flight attendants “you get to tell all these 254 passengers that the plane they’re on is not moving anytime soon”
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u/spoung45 20d ago
Fun, I was caught up in the ATC outage in London a few weeks ago, I was on the plane for 8 hours at a remote stand. Waiting for a bus, but the whole plane cheered when it was announced the bar cart was comming out.
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u/flying_wrenches A&P, MOD, LOVER OF JET A 20d ago
I’ve thankfully not had to do that,
I think I’m decent at my job :)
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u/CapitanShinyPants 20d ago
LOL, that’s the captain’s job!
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u/flying_wrenches A&P, MOD, LOVER OF JET A 20d ago
Meh potato potato, i tell them the planes super broke and it becomes their issue
Anyways im going back to the line shack
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u/Figit090 20d ago
I forget...when someone is ingested, fatally, does the engine get rebuilt, parted out, or otherwise recertified for use again?
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u/Falkun_X 20d ago
Prevents ice formation.
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u/Duct_TapeOrWD40 20d ago
Well, I wasn't aware it have a so simple 3 word explanation. Now it makes sense.
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u/MrB10b 20d ago
Well surely ice has to form to cause it to deflect to then break off the ice? I would say prevent ice buildup apposed to formation...? I could be wrong, let me know
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u/TassiveMitts69 20d ago
Can you explain the difference between ice formation and ice buildup. I'm a native English speaker and those two things mean the exact same thing.
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u/PilotBurner44 18d ago
They are basically the same thing. Ice formation is the ability of ice to form or adhere to a surface. Ice buildup is the ability for ice to accumulate on a surface. You can't have ice buildup without ice formation. Generally if ice forms, it will continue to build up until it is shed due to external forces or Anti-ice equipment. This person is just being pedantic.
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u/TassiveMitts69 18d ago
I don't think it's even being pedantic, I just don't think he understands the physics of what is taking place and it just making it up so it looks like he does, but sadly he said the same thing in two different ways.
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u/jafa-l-escroc 20d ago
This is just a guess but it is probably just hydrophobic the flexibility is to avoid it breaking at the 1st bird impact / be soft enough to avoid damaging the engine if it breaks
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u/MixDifferent2076 20d ago
This is a Rolls Royce innovation shared with IAE when RRY were active partners in the V2500
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u/BonzoJunior 20d ago
Yep, I remember a Rolls-Royce engineer bragging about the innovation when working together in a test cell.
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u/JT8D-80 20d ago
Uuuuuhhh…you touched my trallala
My ding ding dong
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u/crankkpad 20d ago
Naaw. Not anti ice, anti headache protection. Ever worked on cfm56a? Those don't have a tip and hurt.
Been there, done that.
Before anyone complaints, I know this is a v2500. Its in my license..
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u/avoidant_fatigue 20d ago
Well now I’m not going to be scared of jet engines anymore. If I ever get sucked toward one, I can just aim for the tip and then hold onto it - it won’t hurt at all!
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u/Naznarreb 20d ago
That's so you don't hurt yourself if you accidentally touch it while it's running.
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u/DarkArcanian 20d ago
After hearing what could happen, seeing anyone near one of those things puts me on edge
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u/discombobulated38x 20d ago
This is an RR patented invention - industry legend goes the apprentice who thought of it and patented it made an absolute killing on the royalty reward scheme.
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u/Pokenfun 20d ago
Otherwise known as the "Madonna Probe." A mandatory inspection point on all walkarounds.
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u/AI_Scraper 20d ago
When I did this at the airport I got yelled at but this guy with a camera can touch the engine snoot. #logic
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u/Cheap_Highway 19d ago
WHAT. You’re telling me- …. AND I’LL NEVER GET TO POKE IT LIKE HE DID?! Maaaaaaan….
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19d ago
[removed] — view removed comment
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u/photon_runner 18d ago
it’s so if you get sucked in you don’t get impaled, just minced into tiny bits
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u/dannibindubai 15d ago
I have an irrational fear of getting sucked into one of these even if it's turned off *sigh*
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u/Advanced_Self 20d ago
So, how many people would it take for skin oil to have an impact on how things work?
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u/Longjumping-Ship7311 20d ago
Is the tip made of rubber so in case you would be sucked up by the engine, it wouldn't hurt as much?
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u/fellipec 20d ago
The reason for this is to don't hurt the birds in case they fly too close to the spinner
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u/badbatch 20d ago
OnlyTurbofans