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Sweet-Rayla

Just so you know, they automatically lock when winds are too strong, to avoid this


totallyenthused

Called a watchdog. This one failed.


zzzthelastuser

/r/DogsWithJobs is also one of my favorite subs


nevans89

Or it's texas where de-icing measures are also optional


totallyenthused

This was in Europe 20 years ago


VirinaB

They'd watch this happen and call renewable energy a bad idea.


Titelius_Thorex

This was Denmark and the mechanism failed


KidsMaker

You mean updog?


Angry0tter

What’s … ohnoyoudon’t!


PeaItchy2775

I thought they were designed to feather the blades in high winds for this reason. I guess that didn't come in the kit.


Interesting_Cycle564

The nacelle will yaw into the wind and the blades will pitch to 90 degrees as a default yes. There are many safety redundancies in place to mitigate what you see here obviously nothing is 100%.


ParzivalKnox

Yea they also have big disk brakes to stop the rotor


Anti_Meta

Be sick if they had another generator they could attach to the flywheel, increase the drag to slow it down and power an entire additional generator. Or have a transmission that will gear down and spin the flywheel quicker to take advantage. Both of these are horribly complicated, easy to fail ideas and it's obvious why we haven't done it. But it would be dope to capitalize on angry nature whenever possible.


lackofabettername123

Feather the blades?  Like grooves to allow some of the air to pass through?  The Old Dutch windmills had like shutters on them that would be calibrated to open around a certain wind temperature in case of a storm.


Gnascher

Similar idea, but in this case the blades can be rotated to present their thin edge to the wind and adjust how much power they take from the wind. Many prop-driven aircraft have this same ability. When functioning properly, the angle of the blades are adjusted constantly to keep constant power output under naturally fluctuating wind speeds. Multiple fail-safes must have gone wrong for a runaway like this to occur.


pinky_blues

[More information on the failure](https://en.wikipedia.org/wiki/Hornslet_wind-turbine_collapse) Sounds like a catastrophic gearbox failure decoupled the rotor from the generator and brakes and it lost pitch control. That plus high winds, and I guess this is what happened.


joethafunky

Fun fact not many realize, when you go up/down in a helicopter the rotors don’t spin any faster or slower, it just changes the angle of the blade to control how much lift there is


nico282

Fun fact 2: the angle of the blades changes continuously during every rotation to control how the helicopter moves forward, backwards and sideways.


StereoBucket

Yup, and the same mechanism allows you to make a soft landing without the engine, by letting the air spin up the rotor as you fall and then turning the blades to produce lift. "Autorotation" for those who want to look it up.


relevantusername2020

ah i wonder if this is related to those "unprecedented extreme weather events" all the nerds wont shut up about


Stuebirken

Nope, this happened not that fare from where I live here in Denmark in 2008. The weather *was* pretty harsh by Danish standards as it was something we call "kuling", where the wind will blow between 17,2 - 20,7 m/s(or an 8 on the Beaufort scale where a hurricane is an 12). Not that the weather hasn't changed a lot in Denmark the last 20 years, where we have had actual hurricanes, something that has never been seen before (yes, a category 2 hurricane is still a hurricane, especially in a country where people are used to loose their umbrella to a gush of wind at most).


PeaItchy2775

Feather them, meaning to rotate them so they block the least amount of airflow, are not airfoils anymore.


Interesting_Cycle564

The blades are made of fiberglass and epoxy composite. But the blade surface does not change to allow air through.


Hungry-Western9191

They do - Whats supposed to happen is the blades change their angle of attack so it's not generating rotational energy and then a brake applies which prevents the hub rotating as wind speed goes past safe levels. One or both those mechanisms failed here - or possibly the control electronics - resulting in it self destructing.


nlfo

Well, that one didn’t


that7deezguy

If you watch closely, I think it’s demonstrated here…?


jerrytjohn

I smiled a second late. Have an upvote.


rat4204

Breaks must have failed on this one.


Bennybonchien

Looks to me like the breaks were quite successful…


PeterNippelstein

The front fell off.


Dimos357

UNLIMITED POWER!!


LatentBloomer

![gif](giphy|3oKIPzLXQYb2Bn5PLG|downsized)


Swimming_Student7990

Now we’re cooking with wind!


Designer_Banana_616

POWER UNLEASHED


Dirty_munch

POWER OVERWHELMING!!


Dr-Retz

Sooo much electricity just before that happened


NapKnack

![gif](giphy|WmKrOMrTFFhPW)


HydroElectricTV

They actually decouple at certain speeds to not affect the frequency on the grid, so no electricity just before it happened


No_Definition4335

Exactly, also, you can not produce more power than the generator you are using and you will use the propper one for the zone standard wind speed.


dzic91

The scale is what is lacking to make this video completely frightening, as it should be.


totallyenthused

The big thing that flies out of the top after the tower strike is the gearbox. About the size of a car.


dzic91

Oh yes, I saw a blade being transported, once, absolutely huge.


orphncripplr

I stood next to one at a rest stop a while back. Very impressive.


Medioh_

I saw this video online of one being ripped apart by high winds. Quite large.


ElMuchoDingDong

I once saw a comment about how large the blades can be. Impressive.


Titelius_Thorex

Yes the blades are indeed very large and long. We've had roundabouts specifically made with those in mind I grew up in a town with an office building belonging to Vestas (the company in charge of this specific turbine) and another site in a neighbouring village as well as another site in the munincipality. During my childhood it was very common for people to be late because they were caught behind a turbine part transportation truck. (the wings were not the worst to be behind as you could still see the other lane and might get a chance to pass it) I've had to call home and tell my parents I was late because I was behind those trucks after I got my drivers license


qu33fwellington

There is a scene in House where one of these at a research station in Antarctica (I believe) breaks due to corrosion, and while it is not as high speed as this it shows the scale pretty well as I recall. I’ll see if I can find the clip to either prove I’m an idiot or help you out. Edit: I found it! [Timestamped link.](https://youtu.be/srcxB_6iGio?si=1x-tZEQNbKRFMWcL&t=0m40s)


dzic91

Oh, and those are the small ones. The propellers on the bigger ones are approximately 50m (170ft). Might be bigger, too.


qu33fwellington

Definitely! I actually see the enormous blades being transported all the time, we have a huge wind farm out east with the huge ones. It’s oddly beautiful going out there. We have some paint mines very close to there so it’s a fun little day trip if you take a hike at the mines after, but taking a quick detour to the wind farm is always fun. It makes me slightly uncomfortable since they are SO huge and I am SO small in comparison, but the green green fields around them more than make up for that.


Interesting_Cycle564

Actually now that I look closer that it is not the gearbox flying out it’s the generator coming out of the back. The gearbox is more centrally located or towards the front. Also the generators are very square that one looks square. Those weigh about 1/2 of what the GB does.


Interesting_Cycle564

The gearbox is around 65-80k lbs depending one what MW tower it is.


Interesting_Cycle564

Actually now that I look closer that it is not the gearbox flying out it’s the generator coming out of the back. The gearbox is more centrally located or towards the front. Also the generators are very square that one looks square. Those weigh about 1/2 of what the GB does.


FiercelyApatheticLad

I remember doing the math on this video once. IIRC the tip of the blade goes somewhere around Mach 2.


MisterAmygdala

The thing makes a groaning dying face in it's finality.


Brother_Lou

Need a banana for size.


akmalhot

Banana is there , just hard to see


M1k3y_Jw

A big windmill has 85 m radius and does a full turn in around 4 seconds. That means the edge moves at 130 m/s or 40% of the speed of sound. In this video it takes less than a second to turn but it looks like its not such a big wheel. The edge speed will probably be somewhere between mach 1 and mach 2.


_DapperDanMan-

This isn't supposed to happen, actually.


jeweliegb

Quite. Front fell off.


Mooman242

Love to know what the output was leading up to that, or maybe it was disconnected


thisisinput

It disconnects when the generator is abnormal.


Fun_Country_6737

This is a wind turbine. Windmills grind grain.


ChipSalt

Ok but how much wind is left in the world before it's depleted???


KnightofLusk

Since wind is caused by the sun, about 7 billion years worth


ChipSalt

...so you're saying it's *not* renewable?


StaatsbuergerX

For our reference and usage system, another 7 billion years (more than the Earth is currently old) are probably enough, but as the time in question approaches, you should definitely send a warning note to those responsible. Don't let anything get forgotten again!


Gnascher

While that's true ... Guess what most people not in the industry call them.


Moist-Crack

Probably some mandarin or hindi word.


Fun_Country_6737

Ignorance is bliss


Stoo-Pedassol

If that were true, more people would be happy.


pimpbot666

Yeah, seems the most ignorant are also the most angry these days.


sladives

WINDMILLS DO NOT WORK THAT WAY


gdub695

Thanks, Morbo


LostnFoundAgainAgain

Where I live, I have never heard anybody call them a willmill, they are wind turbines or "big spinmy thingys", I'm also not in the industry. Edit: Also can be referred to as "turbines"


katboom

I'm in that industry and I've never heard people call them windmills.


donnochessi

He said “not in the industry”. Laypeople. If you pointed to one and asked someone “What’s that?” I can see windmill being a common answer. The turbine is the system to transfer energy into rotation to make electricity. The mill is the grinding stones to make flour. Wind powered turbine. Wind powered mill.


ShanAliZaidi

This one grinds the electromagnets


ReverendBread2

How do you know this one isn’t helping to power a machine that grinds grain?


poozapper

I hope they paid the hamster in there extra


EntertainmentBoth105

That’s what happened to my beyblades when I launched them with too much force


LevyAtanSP

That’s not a windmill


BigOpportunity1391

![gif](giphy|Uod1ANyTO3uGQ|downsized)


ES1123

They feather the blades to stop this from happening. This one obviously failed leading to the overspin.


skovbanan

This happened in Denmark a few years ago. The brake holding it still wasn’t functional. Today’s wind mills rotate the blades so the wind doesn’t make them spin and the brake doesn’t have to hold so much force.


mp9220

Wind turbine*.


totallyenthused

Wind turbine


yonderhusker

Can anyone more intelligent than me calculate the blade speed? You could probably use one of those fancy screen capture devices that I don’t have. Kessel Run in less than twelve parsecs kind of speed.


Swan2Bee

I'll make the initial assumption that the rotor diameter is 300 feet, pretty typical for a turbine like this. Aditionally, through the whistling of the blades, one of them seems to be whistling louder than the others, I count *roughly* 3 whistles per second, so three revolutuons per second. the distance the tip of one blade travels per revolution is 300 feet times pi, so 942 feet. And since this distance is traveled thrice per second (3 revolutions per second), the distance the blade tips travel per second is 2830 feet. Converting this to more meaningful numbers, we get **1930 miles per hour, or mach 2.51.** As an aside, my pysics brain tells me this is a bit high, but then again, this is a huge object spinning quite fast. Perhaps I was overzealous with my diameter edstimate. Structurally speaking, the sound barrier (mach 1) tends to be a bit of a speed limit, in which a considerable amount of energy is required to go faster than that - for this speed to be achieved, those blades must be quite strong. That being said, the supersonic tip speed is likely what's casuing the blades to whistle, and is almost certainly what ripped them to shreds (not that you needed me to say that last part). As for this video being faked... I think it's real. I saw the [fake video](https://www.instagram.com/p/BuHvu4SF8PA/?utm_source=ig_embed) that everyone *thinks* this is, and the diference is night and day. the fake video \*looks horrifically\* fake and uncanny. this is not


RareDestroyer8

I went through the video frame by frame. Initially, the turbine is spinning close to 1.8 revolutions per second. This value increases to about 2.2 about a second before the turbine breaks apart. Let's take the 942 ft circumference and multiple it by 2.2. This gives us 2072.4 ft travelled per second, which is equivalent to **2274 km/hr or Mach 1.84**. Still insanely fast. For anyone that doesn't know, mach 1 is the speed of sound. The tip of the blades are travelling nearly twice as fast as sound itself.


Swan2Bee

I'd believe this. Your method for determining rotational velocity seems much better than mine. I agree; still insanely fast.


31kgOfCheeseInMyButt

RAID; or "Rapid Automated Irreversible Dismantling" is a mechanical/industrial situational term used by absolutely no one because I just made it up.


punchybot

This is not a real video. It is a digital animation.


milkiman

I had the same intial thought as you, but as far as I know, this video is actually real. In this article there is the same incident filmed from another angle: [https://www.snopes.com/fact-check/wind-turbine-explosion/](https://www.snopes.com/fact-check/wind-turbine-explosion/) The fake video I, and maybe others like you had in mind, shows a different incident, with horses on the pasture etc. I think it is this one: [https://www.aap.com.au/factcheck/coal-lobby-video-of-wind-turbine-disaster-is-not-real/](https://www.aap.com.au/factcheck/coal-lobby-video-of-wind-turbine-disaster-is-not-real/)


Titelius_Thorex

It’s real I watched it on live television back in 2008, my father worked for the company, Vestas, and had multiple days of overtime due tot his event


LIME-line

By the looks of the other video, and if the tower is actually 60m tall as stated: By pixel count, the rotor radius is around 2/5 of the tower's height, so 24m. I counted 35 rotations in 15 seconds, meaning that that the rotor would be spinning at 140rpm = 14.7 rad/s. If that were close to the actual measurements, it would mean the tip of the blade would be traveling at 14.7rad/s\*24m = 352.8m/s = 1270 km/h, or well over mach 1.


Steamer1

I also thought it was fake but it looks like it might be real https://www.snopes.com/fact-check/wind-turbine-explosion/ http://www.pardoe.net/abo/windfail.htm https://jyllands-posten.dk/uknews/ECE3927005/Minister-demands-explanation-for-windmill-collapse/


Titelius_Thorex

It’s real I watched it on live television back in 2008, my father worked for the company, Vestas, and had multiple days of overtime due tot his event


jeweliegb

What makes you think that? It is reported on Wikipedia that the real incident was one of few to have been captured on film.


earthlingjim

And that's how you get 'batty whales'.


Travelling-Cat

Windturbine*


knockers_who_knock

Wind turbine. Not a windmill


OMG_ITS_BIG_TUNA

1.21 Jigawatts!!!!


sad-mustache

This is so old I wrote an essay about wind turbines as a kid and included screenshots of this over ten years ago


ricksdetrix

Old video, constantly doing the rounds so people can get mad about renewables


Geoclasm

is there a reason they can't implement a transmission system that will swap out gear ratios when the speed exceeds a certain level?


jskaffa

![gif](giphy|3o84sq21TxDH6PyYms)


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Dragonfiery_RDF

There’s a gearbox in the head of the wind turbines to convert the usual 10-20rpm of the turbine blades up to over 1000rpm for the generator. So at these speeds I can only assume either the gearbox has failed or even if it didn’t the generator inside would be toast regardless.


OkHarrisonBidet

I guess it was really noisy 


relevantusername2020

me\_irl 2020-2022 rip my homie me, i barely knew me


Far_Caregiver3046

No one fan should have all that POWER!


NordFraey

Wind blowing.


GnocchiSon

![gif](giphy|xsF1FSDbjguis)


smoothVroom21

That looks... Dangerous.


lunasrojas_

Those things are very very large in size. This is absolutely terrifying.


Dovresunden

Does this happen to wind turbines too?


RigamortisRooster

Thought they can control blade pitch


Daddelblomme

![gif](giphy|3o84sq21TxDH6PyYms)


technobrendo

The governor didn't govern that day apparently


datengrab

Oh snap...


WolfThick

I'm guessing the edges of those blades are going somewhere around 200 mph. There has to be a simple solution to stopping this from happening.


s1eve_mcdichae1

This video could have been 20 seconds shorter.


DoomSayer218

🎼Say it ain't so, I will not go. The night will go on, my little wind mill. 🎶


laughinghardatyou

I have always wondered if the cost of building one of these wind turbines supports the savings of using alternative fuels to generate electricity.


Sqlizit

This is the first time I’m seeing one run. All of ours where I live are nothing but yard ornaments.


Santa2U

That’s the case where I live in Bowling Green Ohio. We have 4 out by the city landfill. Normally there’s only 1 running….


Sqlizit

Ohio here too haha


Bleejis_Krilbin

Hello fellow BG citizen.


Aqueento

![gif](giphy|3o84sq21TxDH6PyYms)


FreakiestFrank

I’ll bet that thing produced 1.21 gigawatts before it self destructed


GardenGnomeOfEden

I imagine that's also how it would look if it got strafed by an x-wing


LivingInPugtopia

Well, that's not terrifying at all.


armathose

This is what happens when the band brakes fail.


Reynn1015

At least it’s keeping the surrounding area cool


rrhunt28

But think of how much power it out out before the explosion. I would imagine this was an old obsolete version, or a test.


CheekyFactChecker

Abbruchsfaelle


asswipesayswha

Niiice


BoscoCyRatBear

It's Fucking WIMDY


FlatFurffKnocker

No, i would bet it's when there it a barring failure.


rvbeachguy

One wind turbines doesn’t mean everything is bad, like there are good cars and bad car manufacturers


_UWS_Snazzle

This looks like a scale model to me


[deleted]

Then a boat crashes onto shore


cturnr

its a big dead bird graveyard


Polo1985

That's my brain doing math


6Arrows7416

For the last damn time. That’s a turbine, not a mill.


OIL_99

Ummm, duh… free power for everyone for a week.


Current-Power-6452

If it goes viral the power produced will be consumed in about an hour by redditors vigorously typing comments under this post.


systemoftheup

Hope we got the extended warranty


christpeepin

![gif](giphy|bhnqreJKvwPMA|downsized)


Hmnh6000

Moar power


bacardi_gold

That’s a wind turbine bro.


Budget_Foundation747

I wonder how close the tips of those blades were to breaking the sound barrier.


Life-Pride-2468

Bang


Thick_RiderYZF-R

Watching that gave me a weird amount of anxiety.


Omnealice

Doc and Marty had somewhere in the timeline they needed to be, what can I say.


SithumKottearachchi

Helikopter helikopter


FaithlessnessOne2443

![gif](giphy|xT3i108YUO3Gm1zmms|downsized)


Sirneko

Windmill motherfucker? that must be pulverizing diamonds


malloc_free_

Spin spin spin... BOOM!


SamaTwo

It's more like when the brakes don't works anymore...


Plastic-Awareness-61

I don’t get why they don’t put an increased electrical load on them during high winds. The current strategy is to completely lock them down in high winds. But if the load were increased significantly, then it would be like extreme magnetic brakes and the blades would spin slow, but generate much more power per revolution. Idk I’m just an engineer


IAmBroom

They. Do. This is an early, failed system.


FootballAggressive49

Is this windmill that also includes one episode of 'Destroyed in Seconds'?


SelafioCarcayu

Oh gawd please don't... That was horrifying


Dan_Glebitz

Weirdest looking 'Windmill'? I have ever seen.


MasterN00b22

Generated electricity: 📈📈📈📈📈


BartyB

![gif](giphy|3o6wO7hfMVIEeqUTJu)


Treebeard777

I want to know how far those blades went. I've seen them roll down the highway and they're truly massive.


blitzkreig90

It is kinda sad seeing the broken parts falling down while still spinning.. Well, I'd better get back to work!


Prestigious_Oil_4805

Who else tight this was a loop and then, dang


Dummyidiot2021

2024, where things made to spin....break from spinning


bartontees

That windmill is my spirit animal


NewbSoop

You should try stopping it with your tongue :D


Conveth

It's not a windmill. Not unless it's milling electricity, but you'd end up with Quarks and Gluons everywhere.


chesbyiii

https://preview.redd.it/395ecrf6mbad1.png?width=283&format=png&auto=webp&s=b0eb51c715072c7cef37fa82b160be4d3991f0db


maialonghorn

r/TerrifyingAsFuck


gschaina

Barcus Wroot is somewhere terrified rn


dorky_dad77

All I see and hear is Dr. Emmet Brown screaming “ONE POINT TWENTY ONE GIGAWATTS?!”


TeslasAndComicbooks

![gif](giphy|zCv1NuGumldXa|downsized)


AnObtuseOctopus

Now... go look up how gigantic each if those blades are.


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All_This_Mayhem

You had one fucking job, windmill.


theorem_llama

I don't think it's designed to mill things.


Cudajim929

Wow, the near perfection in built that they all three came apart at once. Good engineering good build.


Train_Driver68

Before exploding, look how much power it made


SteelyDude

The sound of that is giving me cancer.


Effet_Pygmalion

What's with bots and putting emojis in thread titles