boeing 777 brake test (RTO)

[@RikyyThePootisSlayer]

This is an emergency brake, the brakes WILL catch on fire after it's been performed and are almost always replaced for the next flight. This was a very successful test.

[@viperz888]

+Rikyy ALMOST always replaced?????????

[@equim7363]

+viperz888 ha ha true

[@hoghogwild]

+Rikyy The brakes used for these Rejected Take Off tests are old worn out components that shouldn't be used on a properly maintained jet.. The purpose of this test is to get the plane stopped in worse case scenarios. Worn out brakes, max takeoff loading, no thrust reversers, no external cooling of the brakes/wheels/tires by firefighters until 5 minutes after the planes comes to a stop. The brakes are always replaced after these tests because the brakes that are installed for these tests aren't flight worthy to begin with.

[@abdilahsatwam3225]

abďilah.satiam

[@EdmontonRails]

Did they catch fire? I thought they were just red hot and some parts melted.

[@theminicooper]

Impressive to see the suspension relax once the plane comes to a complete stop!

[@MrJonniconni]

The black smoke is caused the fusible plugs blowing out to release the air pressure from the tyre (tire) to reduce explosion risk. Usually there is more than just one plug per wheel unit.

[@anony00000000]

Mark S I think it should be the possible explosion caused by extra high pressure due to heated nitrogen in the tire.

[@BestPlconEarth50]

Mark S The magnesium wheels go into what cha call a thermal shock event and explode, that is if you were to try and put them out with water. If they were on fire. Once magnesium catches fire good luck putting it out right! Why do they use magnesium for aircraft wheels you ask? Because they stay true over many many heat cycles. Dumbass!

[@BestPlconEarth50]

Im not following you mark, where did I mention plugs?

[@RayleighCriterion]

So why don't they just better non pneumatic tires instead?

[@chrishulk1]

Thanks for you taking the time to explain as I wasn't aware of that redundancy. I wonder what temperatures are reached with that friction.

[@lucasgoncalves6423]

Quem mais está aqui por causa da explicação do Lito? Hihihi

[@SAMUKAOLL]

EU

[@embsilvestre]

hahaha Eu!

[@gabpayerx154]

Eu

[@leonardod.l5218]

Eu

[@edmundolealcoelhogoesne8769]

Eu

[@MrJonniconni]

Mark S, that is correct , tires are charged with dry nitrogen. Fusible plug cores typically melt at 177 degrees C,( but there are other different rated plugs) Following a RTO which is the most severe braking an aircraft can subjected to, the overheated brakes (understatement !) transfer heat to wheel assemblies and tires. The normal tire pressure can be 150 to 225 PSI depending on aircraft type and a RTO can increase pressure dramatically, coupled with tire degradation due to the heat an explosive situation could occur, multiple plugs are mounted on wheel assemblies. These allow tire pressure to dissipate to avoid aircraft damage (fuel tanks) and injuries to persons.

[@Mark-kt5mh]

I have no idea how I stumbled upon this video, but do you remember my original comment, I can't find it.

[@oldmech619]

Hey Mark. You still around? I just saw the video of overheated brakes on a 777 RTO brake test. Great comment. The worst thing the crew would do is set the parking brake after a RTO. I have had to go onto the taxiway to replace tires

[@bluehealer81]

0:32 "Honey, you forgot your lunch..." "DAMMIT MOM, WE'RE TRYING TO DO A BRAKE TEST HERE!"

[@40nine99]

I'm 🤣 rollin

[@jonathangorman9446]

The ultimate sacrifice, rest in peace brakes.

[@williamburke8242]

My dad and I have the same color circle like yours.

[@hudsonball4702]

1:00 I didn't know breaks could cough.

[@sstroh08]

+Hudson Ball Could be wrong but I'm pretty sure thats the tires automatically deflating, if I remember right the rules are it has to land fast [or i guess in this case reject a takeoff] and stop without thrust reversers and maximum weight, then sit for 5 or 10 minutes or so [i can't remember exact time, its supposed to represent the maximum time it would take for a fire engine to respond] without any of the tires exploding, then after that time period remote valves are opened on the tires so they deflate before they explode, I guess they would eventually explode if left exposed to that heat for a long time

[@mattmoreira210]

+Hudson Ball Bahahahahahah!

[@macsrule94]

The rules are it has to stop in so many feet with the brakes at the minimum allowable thickness (basically as worn out as they could be), they weren't allowed to use the thrust reversers and had to stand or taxi for 5 minutes without going up in flames. On the 777 after the tires fuse plugs melted and they put out the glowing brakes, it cost $750,000 to replace the entire gear because of the heat, course thats change to the price tag of replacing the plane and the lawsuits that would happen from passengers

[@Linlds21]

It's Thermal Fuse Plug which at a certain high temperature will melt down and release the pressure inside the tires before they explode

[@bunker931]

Thank God for that technical term, my ears were bleeding.

[@karthikv1212]

Any reason why 58 people have disliked this video? Do they think, we could have done a better job?, or do they expect the brakes to be ice cold after a hard stop?

[@iLLy2pacRemixes]

simple explanation....they're idiots

[@smokingorca]

People? Not a big fan.

[@jesuschrist2616]

The people who disliked this was not because of the break but because the video was not 4k with but I surround sound 8.5000 db audio

[@Capt_Sid]

Probably their car/bikes brakes weren't that efficient and they ended up rear ending someone

[@Mega-tl6bx]

prob. people who work for airbus

[@derekwall200]

this is to show that the tires won't explode when you do an RTO. the wheels will catch fire yes, but the flames won't spread to the rest of the aircraft. the tires will deflate once those fuse plugs on the rubber melt and let the gas out

[@JimWakable]

A successful test! The fusible plugs allow controlled "bursting" of tires

[@jamesbp]

Wow look at that, amazing how fast that behemoth stopped!

[@confirmhandle]

Legend has it that those brakes are still orange hot to this day.

[@haresplitter]

I love shit like this.. always learning.

[@Velo1010]

Notice closely that only the brakes and spoilers were used to stop the aircraft- no T/R (thrust reverse). This explains the fire.

[@sacr3]

Brakes don't light on fire when you don't use your T/R's, but they will if you do a rejected take-off with a fully loaded plane and not use T/R's. This is a test for RTO, worn out brakes must stop a fully loaded plane.

[@Sergey322]

Hello, is it OK to feature your clip in a my chanel for educational purposes (so-called temporary copyright.)? You can stop me from using your content at any time and it will be deleted immediately. It will be credited in the description & comments section with your name. Thanks, MM

[@JimWakable]

And this, folks, was a perfectly successful test... no kidding. Shows the extent of testing in order to make aircraft safe. Beyond the comprehension of the mere mortal passengers who sit in the back and drink beer while sitting in a chair in the sky...

[@NickWilmans]

When John Denver' Calipso or Leaving on a jet plane come's over the radio.

[@zbeast]

1) how long do they have to sit? 2) is there a requirement that the tires not explode during the cook cycle? 3) must they be able to taxi without assistance after the cook cycle?

[@midorigurin1912]

+Anton Zuykov Tires :3

[@frankb4199]

A cool engineering design would be some type of flap that cools the brakes from the wind. Like super cars have.

[@rileycarlson3714]

Never seen a "check tire" light on the tire itself before

[@Wasserspeier07]

I think that are the melting valves of the tires to do a controlled deflation. Deflated tires cannot explode because of the heat coming from the brakes.

[@metanoia.CHANGE_OF_MIND]

Sponsored by Brembo Brakes.

[@JMsoo]

Who's here after Randazzo's update on the PMDG 777's glowing brakes? 🔥✈️

[@overbank56]

those brakes aren't red hot, their orange hot! now that's hot!

[@muhammedareeb9821]

Ooooo

[@TheyForcedMyHandLE]

Why don't they just use the brake from the Nissan Frontier - the one with the Pro 4X Offroading package?

[@vegardpig8634]

LOL

[@FinnishArmy]

Why did they paint the plane before testing...?

[@hank8310]

They should install a fire extinguisher system next to the hydraulic gear so when the pilot has to apply the emergency break they can extinguish the fire.

[@mattorr77]

It's one or two things, either: Smoke from extreme brake heat or dust and grit. Most likely a mix of both

[@ramyg5037]

How come the tires didnt pop given that the brakes were red hot?

[@104th_Fallen]

because its Boeing.

[@EnDSchultz1]

That's part of the test. If the brakes get TOO hot, they'll melt plugs that allow the tires to deflate in a controlled fashion rather than explode. At least, that's the hope. If you look up "A340 rejected takeoff" here on YT you'll an 8-minute video of a test where the failsafes don't work as intended!!

[@SebA-tt8cr]

Funny, boeing doesn't make tires.

[@104th_Fallen]

Neither does Airbus. Yet there are quite a few videos of airbus plane tires exploding after the RTO test. Boeing reached out for a product to solve the issue, and airbus did not.

[@SebA-tt8cr]

Both are reaching out for the same suppliers. Same goes for engines, or everything not directly done by airbus or boeing. And there is accident where tires explode for boeing too.

[@williamburke8242]

ROGELIO GARCIA AGUIRRE, my dad and I have the same color circle like yours.

[@rod928s4]

Check out a set of Formula 1 carbon fibre rotors after they have glowing red hot then cooled hundreds of times during a race. the braking loads are similar and occasionally they explode unexpectedly...

[@devilsoffspring5519]

No room for disc brakes on passenger jets. They use drum brakes, and the drum (rotor) is an integral part of the wheel rim. It's the most compact and lightweight arrangement possible, and works just fine in normal use. This video is a test of a rejected takeoff (RTO) which is an extreme example of brake use in a passenger jet. The brake pads and wheel rims become extremely hot, and the tire pressure is vented automatically to keep the tires from bursting. That's what you see after the plane stops and you get puffs of smoke coming from the wheels.

[@ARSZLB]

always wondered why they couldn’t build in a fire suppression system that would disperse foam or nitrogen or something through a set of nozzles on the inside of the wheels to put out the brake fire after a RTO, since fire is certainly always expected after that, instead of someone on the ground crew having to drive over to the plane and put it out manually.

[@Haruki_Aikawa]

Mmmmm freshly cooked brakes!

[@dontecampbell2966]

This wasn't a brake test,this was a rejected takeoff because the landing gear caught on fire

[@jude_the_apostle]

such a beutiful plane

[@drfiberglass]

Those brakes are finished...

[@BlackFoxFalcon]

They were al ready before the test even started. They used completely worn out brakes to perform this test which makes it even more remarkable.

[@nasajetpropulsionlaborator8727]

T H how did you figure that out

[@Haruki_Aikawa]

Looks like nasa is getting involved now

[@confirmhandle]

Naa. Resurface those rotors and add some antisqueal shims. Good as new :)-

[@leokimvideo]

You only had one job..well done

[@thatonethattalksalot7656]

Thats hell on WHEELS right there!!

[@Sir_Gugharde_Wuglis]

The first test like this with the 777, the plane still taxied off the runway while on fire. This one just sat there. Maybe because this the 777-300 and it's heavier?

[@jonathonkearney9930]

There doesn't look to be any water or moisture on the ground so what is it sucking up?

[@eZLcheng]

It's smoke from the brakes

[@flightfernando]

777 have brake fan same as A320/330?

[@peanuts2105]

Boeing hasn't suparsed the 777-300. Legendary aircraft. Not even that plastic pig 787 comes close. I'm an aircraft engineer and I'm lucky enough to work on both

[@rios4603]

Where is the complete video?

[@heyeveryoneimcool]

Hey look the wheels didn't explode!

[@derekwall200]

that's the whole point of this test. not only to make sure the tires don't explode, but to make sure that fire won't spread to the rest of the aircraft, and to make sure the gear will hold up after undergoing that kind of rough treatment.

[@edward28051989]

In an Rejected Take Off situation, don't used Reverse???

[@derekwall200]

during an RTO test they don't use reverse thrust. but if this were an actual flight they would use reverse thrust

[@jsarita]

You would imagine that they have their own cooling system for situations like this.

[@brianhawkins]

It's such a rare event (hopefully never) and the extra equipment would add considerable weight which would cost the airline more fuel for each flight. The economics just aren't in favor of it.

[@jsarita]

Brian Hawkins Agreed

[@cinimatics]

so....do they always catch fire?

[@sacr3]

no, this was a test to see if worn out brakes can stop the triple 7 after a rejected take off.

[@droidvhm7]

Meu carro faz igualzinho quando desço a serra Taubaté - Ubatuba

[@aymaneatide7362]

why weren't firemen there ?

[@johnvolks1225]

You're not allowed to use thrust reversers show me how do you stop the plane using only brakes..

[@PauloSergioMDC]

That's fantastic!

[@janselkennethtolentino8269]

Those brakes are burning. Ok we have ignition of the brakes and we have liftoff of the Landing gears!!!

[@world-rz9vz]

Wow the engines are so big

[@nutella5404]

I got so confused at 0:34 because I thought there was something in between the wheels!

[@ClinkItsNicko]

R.I.P those brakes

[@eccentricgamer4111]

No reverse thrust?

[@eccentricgamer4111]

Good point.

[@eccentricgamer4111]

+Anton Zuykov Ah, that makes sense. Though I do have one other question: why are the spoilers extended? Wouldn't it make sense to leave them down as well to assume a worst-case scenario?

[@eccentricgamer4111]

+Anton Zuykov Wow, I did not know any of that. Thank you. :)

[@sawadahmed9509]

+Eccentric Gamer they are also need to create downforce which essentially glues the plane to the ground thus making the brakes more effective,

[@nicolasrouvreau8365]

Like in the case of engine failure ?

[@talismenf2253]

I love this dam plane :)

[@cpie2284]

Produktionstechnik brought me here

[@Ant-mj9wf]

Thats some crazy heat. The brake fan didnt do its job

[@andgate2000]

This why the tires are filled with nitrogen.....less susceptible to changes in temp.

[@bertomeuleo7886]

C est très chaud !!!

[@renanrocha4042]

B 777 da Tam que pousou em confins quem tá aqui por ele ?

[@plum_bit]

The British invented the jet engine.

[@Iisslemm]

استمر

[@23058usaf]

Um, no that is the brakes burning.

[@thisisneeraj7133]

*Whenever my plane feels a bit warmth at his feets*

[@spoolinwagon5350]

Those tires are pretty beefy. Like zillion-ply.

[@GenuflectingRotation]

Full of reinforcement armor and pure nitrogen.

[@noodlesflawed4800]

them some big arse engines!

[@sacr3]

120,000 pounds of thrust per engine, they are the GE90's. They produce over 110,000 horsepower per engine.

[@mulewachilekwa2433]

wow cool staff

[@masterplane9131]

cool woah

[@Chamyto2.26]

Those are some red hot tires

[@Michelle_Schu-blacka]

0:44 - I think the plane ran over two people. I suppose you have to test what happens when a plane runs over a human as well. Will the plane crush them or mangle them is an important safety question.

[@mdalamgirhussain7917]

Please don't drugs its not good.

[@mazinho752]

Valeu lito

[@insofar4221]

Noisy!!!!!!!

[@Minecraftdruid]

I didnt know brakes glow like that.

[@vabospotter]

RIP breaks..,

[@edwinmark3178]

117 is an emergency number in my country

[@PIchillin456]

What is your country?

[@GenuflectingRotation]

+PIchillin456 Philippines.

[@owens35351]

Lord Jesus there's a firrrrrrre!

[@RafaelCantarella]

It's a two million dollars braked.

[@andreechkanifertiti5200]

Торможение без реверса

[@น้องบอยผู้รักสุขภาพ]

777-300ER

[@myrkurvr]

take that tailgaters

[@coloradowilderness3139]

If it catch fire then it may burn the Aircraft.

[@TobiasDettinger]

They need liquid nitrogen to cool down lol

[@cancerfour69er]

I'd say that was a failed fail...I would and demand no oranges.. Ffs 2018..

[@lingjati]

Pompf .... Pompf fires go away

[@priyaasthana4248]

U burnt that tire .. pls before doing this ... give it to me ....👻

[@thomasdu35]

Same video avaible on a340-400

[@zylm]

Es el disco de freno

[@MrBat000]

what sort of a test is that! The plane almost caught fire and tyres popped. I suspect results are a failure.

[@MrJulien68]

You're absolutely wrong about everything you said.

[@sacr3]

Plane won't catch fire, the tires won't pop (fuse plugs) and I haven't seen the rest of the video but the results were a success from the looks of it. The plane stopped before the end of the run-way and they still have tires to taxi with.

[@MrBat000]

if this is a successful test, than I would hate to see what a failed test would look like.

[@dae8053]

I can use my dodge truck to stop that plane.my truck brakes are the best there is.

[@kerimdeniz2214]

Şahinden hızlı durdu

[@mohamedsayed-bf7zm]

RTO rejected take off

[@jghjghjghish]

imagine if they start burning in mid air. RIP will never fly with those

[@jghjghjghish]

friction by air resistance

[@jghjghjghish]

if they can fly inside the wtc steel structure they can do this too! sometimes physics take a day off you know!

[@edwinrobert7192]

jghjghjghish planes cannot fly through steel. A 767 is a lot less denser that a steel building. Just a birdstrike at 290kts squashed the nose of a plane. So I don't think planes flew inside the wtc.

[@edwinrobert7192]

mrlevite1237 planes do not cruise with their landing gear extended. That would be idiotic.

[@オラハハハ]

真っ赤っ赤w

[@RingRingRingBananaPhone]

lol all these wheels and my civic still stops faster

[@Courtney1992]

Banana Phone does Civic weigh half a million pounds several stories high and about 4000 feet long

[@meraklicoder]

lan söndürsenizeeeeeeeeeeeee olm

[@ВолодимирГоловаченко]

...so...

[@adamselene621]

See why I don't fly?

[@TheThelama53]

Because the brake of those plane can stop 545,000 lbs that goes at more then 200 km/h ? There nothing more self then those plane --"

[@TheAkmalDesigns]

Did you know it's actually more dangerous driving to the airport then flying on the plane?

[@adamselene621]

TheAkmalDesigns I have never been injured in a car; I have been injured on a plane.

[@TheAkmalDesigns]

Adam Selene I was speaking in general terms

[@adamselene621]

TheAkmalDesigns These days it is much more dangerous to fly due to the Wigner Effect. Planes are coming apart in the air now. The way I see it is if I survive a car accident, I can walk away; Ya' can't walk away at 20K feet.