Boeing 777 GE90 High Power Engine run clearing the snow - bring the noise

[@matt8863]

I understand that the ground worker is outside of the induction zone...But you've still got to give him a big balls award for standing in front of two 100,000 horsepower vacuum cleaners.

[@nebarrera]

Correction: 100.000 hp snow blowers...

[@Propa_Way]

El Moli 100?

[@rob8529]

Or just crazy

[@Manayz]

i do it every week 🙃

[@kek207]

Eugen 120.000 xD

[@mrifixplanes1813]

The inlet danger zones are, Engine Idle: 15ft (4.6m), Takeoff Power: 63ft (19.2m). The nose is around 23m in front of the intake, and the headset man is about 5m in front of the nose. You'll notice that though he may move around and stand on one leg while the engine is idling, once the power starts increasing his attention is firmly fixed on that aircraft. It's very unusual that this test is carried out without intake guards, my video description details why it was the case this time. Thanks

[@nicholasschwarz7663]

I know this video is from 9 years ago but it just popped up on my KZbin. You say the inlet danger zone is 15ft at idle. I heard that a 737 at idle could suck a 200lb person into the engine from 30ft. Either way, it's a great video there.

[@dphorgan]

Ahhhh. So that's how they keep the Earth rotating in orbit!

[@aryanrishi]

earth no does it roatate ites flat

[@gordo1163]

What the hell? Read that again, but slowly.

[@Science_Atrium]

@@aryanrishi No, it's not.

[@jetstream454]

@@aryanrishi ffs

[@FLASH24x]

@@aryanrishi Not surprised that u are dumb

[@martiithebest]

The blade fan rotation matching the camera refreshing speed was satisfying

[@mattafakkah]

looks like na zi symbol when rotating

[@liamoreilly308]

I work at a logistics company a 100 meters away and often hear the engines runs, pretty awesome to witness these machines going through their tests. Keep up the great content.

[@dwilliams6346]

I grew up in Harlington in the 80's and 90's when there were 2 engine run locations, so often we'd hear a symphony of loud gritty turbines, or a deep roar from Concorde's engine runs. Much louder back then than these modern planes but equally fascinating. My grandad was a BA engineer in the 60's and 70's so this would've been a common thing for him on those old smokers. What an awesome job.

[@mr.darknight416]

That is a very good way to clear the snow off my yard and house, now all I need is a plane.

[@dvddmc]

I love the start up of those engines the low groan then the up tune of sound just awesome

[@mrifixplanes1813]

He's standing there because it's company policy to have an observer in constant communication with the flight deck as with all engine ground runs. It is not possible to see the engines from the flight deck. He can inform the engineer performing the test of any problems earlier than the warning system. He will also notice if the aircraft moves before the flight deck crew. He is very aware that running engines are dangerous, and that's why he's standing well outside the inlet danger safety zone.

[@WSOAWACS]

Why not install the fuselage buit-in angle cams to watch the engines from cockpit? We are now on that tech level. Frankly speaking Tired to always hear " We/They can't see the engines from cockpit" Cheers :)

[@mrifixplanes1813]

@@WSOAWACS You would have to take that up with Boeing, we can't just go around drilling holes in aircraft to attach cameras to. Not to mention the wiring and configuration changes.

[@WSOAWACS]

@@mrifixplanes1813 Clear. Thanks

[@jeromejccheung7032]

and it looks like that is as far as the cord goes..

[@mrifixplanes1813]

There's two ways that the spoilers will deploy automatically. On approach to landing the flight crew can move the spoiler/speedbrake lever to the arm position, they will then deploy when the "weight-on-wheels" switches sense the aircraft has touched down. If the lever is not in the arm position, the spoilers will auto-deploy when reverse thrust is selected. That's what happened here when the thrust reverser translating sleeves were tested at 1:32, hope that answers your question, TFW.

[@Piano_Reimagined]

Yes! Squat switches control many systems

[@DanielOliveira-lk3tg]

Wow! The 777 is a real star and I'm a real fan of it! Thanks for posting it here.

[@bagelboi66]

Fascinating! I really enjoy the look from the technical side. I have only ever seen the view from inside as a passenger. I very much appreciate this peek behind the curtain.

[@vegardpig8634]

thats some powerful ass brakes

[@vector6977]

The plane is strapped to the ground.

[@Horizon301.]

vector6977 no they are brakes.

All vehicles brakes are more powerful than their engines ,next time you are bragging about your engine to your friends ,take a moment and show them your brakes

[@mattafakkah]

those are brakes and wheel chocks

[@JU-lj8hl]

My dream is that after I graduate with my mechanical engineering degree, I will get hired by GE Aviation to engineer these engines.

[@pavel1809]

good lock

[@Wilbur-em1hw]

pavel1809 nah why would he purchase a lock. No one goin anywhere.

[@stanley00991]

I have the same dream

[@dawidk3074]

Start to thing about 9X

[@itsmetez]

3 years later, mission accomplished?

[@EASTWOODO4]

waking behing that plane woud send you on a HELL of ride.

[@BruceWayneWorld]

I been blasted by a 757, 767, 737, MD-88 and other engines many times working the airport ramp..... it feels like being hit with a strong gust of very (hot) air with a over bearing gasoline (jet fuel) smell. In the summertime in 90 -100 degree weather it just feels like your being cooked to death !

[@hectormelendez7196]

Have you been at St. Marteen Airport?. It is a blast.

[@lagdroid0017]

@@hectormelendez7196 Do you smell the fuel?

[@andrewandrew583]

The Boeing 777: the only plane that would suck your house up & pretend it was a bird strike

[@ManMak6]

I love these engines....so big and exasperated new size! Awesome!

[@zarax1733]

New size....?

[@milnei]

Looks like there are at least 160 of us who are 'that way inclined'..... Love it!

[@mrifixplanes1813]

Thoroughly glad you're all enjoying it. Thanks for the comment.

[@starpawsy]

THe 777 with those big chunky engines is the most beautiful plane currently flying.

[@VE2ZAZ]

I can see the dollars being blown out of the exhaust! :-o

[@gamuss1234]

God save the King BA.

[@twiff3rino28]

Airplane of the year 1995!

[@TonymanCS]

The best concert hall ever!

[@davidca96]

I thought British Airways only used Rolls Royce powered 777's, glad I was wrong. GE90 cant be beat, its a beast of an engine.

[@ArmyofSeaturtles]

ge90 only option on 777-300er

[@mrifixplanes1813]

Hi, an engine run is carried out after each and every service check. It's done for leak checks and function tests of the systems that have been disturbed during the maintenance input. Some are simply idle runs and others are high power, it depends on what work has been carried out during the check. Running the engines makes sure adequate fluid pressures are attained. For example, fuel pressure can be as high 600psi at high power. Thanks for watching and good luck with your studies.

[@FBWFTW]

Thanks for the uploads! Love your channel. Your babies go over my head every morning on the BA212... I can set my watch to it and can also always tell whether it's a G-VII- GE90 or G-YMM- RR going overhead... I'll have to send you some of my videos! The RR is the better sound imho

[@mrifixplanes1813]

Hey, thanks for your comment, really appreciated.

[@BomberFletch31]

Who needs a snow plough when you can get a Boeing 777 :)

[@ohara417]

Love this....i do this in P3D for ages just listening to the whine.... great to hear the real thing....

[@lesbrown7009]

I just love that sound.

[@rumlad1]

Handy for clearing the drive after a snowfall

[@DanielOliveira-lk3tg]

That video made my day, thanks!

[@mrifixplanes1813]

There are facilities at Heathrow too, this video was done there. 747, 767, 777, Airbus A320 family minor checks and 767 major checks are carried out at Heathrow. It's possible Airbus majors are done at Heathrow but I can't be certain. Thanks for watching.

[@gingerwood1969]

You guys have the best jobs!!! No lie!! I am tired of driving a Peterbilt! I want to be closer to jets at Ohare!!

[@38911bytefree]

What a beauty the 777

[@zarax1733]

♥️I agree♥️

[@mattafakkah]

Luckily no one was injured

[@compteck7]

Thanks for a great video....I have to laugh at those who think we are "heros" for standing in front of a test run..bloody cold some days and noisey as .ell but its got to be done.and no we wont get sucked into the engine unless we were standing in front of it, we carry laptops and communication equipment and if the plane does start to slide and the engineers didnt notice soon enough, we can cut engine power at ground level

[@governmentoffacebookmessen3982]

compteck7 I know this is a late comment, but how do you cut the engines at ground level?

[@davehowe4714]

Government of Facebook Messenger Department They press control alt delete 😂 joking aside I too have no idea but it must be a nice job to work on these beauties

[@mrkongsimr]

I'm glad they have that guy there to stop the plane from jumping forward , like has happened !!!!!

[@mrifixplanes1813]

I like my job but it's not all fun. Take de-panelling the leading edges of a 777's wings, that's at least 30 panels and they have a minimum of 32 screws each, to be removed with hand tools. Then the next day you have to put them all back on again! Or changing the filters on the toilet waste tanks, lovely. Or clearing a blocked drain line because cabin crew pour milk, coffee, wine, juice, and everything else down there and it coagulates and festers and you get to fish it out with a brush, Joy!

[@Thedoug369]

A brave man to be standing that close! Not me!! I'd be back where the photographer's at.

[@haydnvonmed6624]

What a howler!

[@bigtaxrefund]

@ 1:35 u could see the air being ingested into the engine inlet on engine #1. left side

[@jwholmes2]

Brakes and chocks holding back 230,000 lbs of thrust. That’s wild.

[@Slegzj5]

How often do you need to do this routine?? I am educating myself as an aircraft mechanic and running the engines is one of those maintenance checks I think look coolest!

[@Matnaude]

British Airways Maintenance Center at Cardiff Airport ?

[@mansouralblooshi3004]

Great vid mate.👍 i know how shaky it is in the cockpit when it comes to high power runs. 😫

[@op3l]

Imagine having this as your snow blower... can clear an entire street from the intersection.

[@PlaneSpotterLCY]

I think the guy in the green vest must wear a warmer jacket this winter

[@jurrien75]

Nice how the framerate matches the N1

[@banzaiib]

almost 200,000 lbs of thrust right there... that's about 7 of the F-15E engines at full afterburner...

[@n10cities]

Sounds like warp drive kicking in @ 1:00! :)

[@mrifixplanes1813]

You're very welcome, and thanks for watching!

[@thomaszapantis9429]

Thanks for uploading :)

[@rileywoods6801]

Looking at the tires squatting, I can tell this bird is HEAVY with fuel for this run-up. I work at a local FBO where we do MX and run smaller GA aircraft up like Citations, King Airs Etc... It would be a blast to work with one of these.

[@mrifixplanes1813]

+Riley Woods Not that much, 40 metric tonnes, Max is 95 tonnes on this "A Market" 777-200, which are the earlier ones, most 777-200s can hold 137 tonnes

[@HoggerCaptain]

Is all of BA's maintenance done at Cardiff or do they have facilities at Heathrow as well? Thanks for the behind the scenes look.

[@imdaman786]

Amazing ! I actually did enjoy that an wishing it was me standing there lol (one day) .. Some powerful brakes they are .. & do only take the engines upto 80% or can anyone be at 100% ??

[@ridefast0]

I noticed that 'strobe' effect of the camera just about stops the fans at their highest speed in this test - if this is a 30fps video then that makes it about 1800rpm? And I think we needed a few more leaves, sheets of paper, lost luggage etc flying around, to better illustrate the no doubt impressive set of vortices set up by this wonderful experiment. Thanks for uploading.

[@mrifixplanes1813]

Yeah, we kinda have to make sure all that stuff is not in the run pen before running them up like this :). At 8:15 if you watch in full screen, at the rudder, there's a fair size chunk of snow that makes it way right (on screen) and is obliterated by the exhaust of the left engine, I like that ha. Thanks for stopping by and leaving a comment, appreciate it.

[@LinusLarrabee]

Nice video! How is it that the engine did not suck that man up?

[@Anonymous-or4ru]

+LinusLarrabee Engine ingestion can only happen in closer proximity to the engines. Standing behind the nose wheel will become risky though

[@lesbrown7009]

+LinusLarrabee Because he was standing outside of the induction zone. Even large jet engines that inhale tonnes of air per second only have a limited supply; per se. Just like your vacuum cleaner has technically enough power in it to kill you. But it just sucks wind.

[@JarrodFernandes]

I don't think I'd be able to stand there so calmly in front of a 777 while its running.

[@RoyalRecordsLLC]

There’s having big balls then there’s that man

[@jonw8789]

Excellent video.... must have good brakes or that thing would have been off like a shot!

[@joanborger702]

Enjoyed very much!

[@mrifixplanes1813]

Thanks

[@SKBenergy]

my icon in maintenance action :) !!!!

[@S3driver]

Just my kind of snow plower!!!

[@uzico]

Incredible! 🔥🔥🔥

[@txav8tion]

the 30 dislikes were from train lovers. awesome video!

[@pxlz5942]

Using the world's most powerful jet engine to clear the snow

[@cmdcs]

What's the meaning of letting the engines run like that? Is there any thought behind it? If yes, which one?? :)

[@mrifixplanes1813]

After routine maintenance an engine ground run is carried out to check for leaks from serviced components. A run is necessary to build up the required fuel and oil pressure in the various systems. At 80% N1 speed (the fan rotor is N1) the fuel pressure is over 550psi. Once the run is complete the engine cowlings are opened and a thorough leak check is carried out, paying particular attention to any filters that have been changed, blanks and plugs that were removed for borescope inspections, and pipework that may have been disturbed.

[@cmdcs]

MrIfixplanes Thanks a lot for this detailed answer! 😀

[@samanli-tw3id]

To check if the engines are running properly. If there's a problem, it will show itself otherwise .

[@SonorGeek05]

I would love to have this job. Graduated in May of 2016 from the Aviation Institute of Maintenance, and received my A&P license. Unfortunately I can't find a job that doesn't require 3 - 5 years of experience.

[@Manayz]

gotta job yet? also how hard is it to get an a&p im currently surving in the usaf and am planning to get one myself.

[@mrcannotfindaname]

Look at the tornadoes they created

[@hrhlordwurlibird]

Looks like BAMC. My son Sam will be applying for an apprenticeship there in 2014 after work exp in Oct '13 :)

[@mrifixplanes1813]

Nice of you to say so, cheers

[@emercycrite]

Notice how by the end of the video the blast walls are almost completely swept clean of snow.

[@horsepowerchef]

just out of curiousity, why do the spoilers deploy? did the person in the flight deck deploy them, or does the aircraft deploy them through its own logic sensing it it on the ground?

[@mrifixplanes1813]

If a take-off power test is required, which isn't very often, one engine would be run at full power and the other at 60%, then switch over to do the other engine at full power. This is normally also the case for this 80% thrust test. Due to the conditions, the engineer running the test decided it would be better that if the aircraft started to slide, it would do so in a straight line. That's also the reason there are no intake guards on this run and I'm standing right the way back there :) TFW!

[@giltracy505]

Please don't get too close to that engine!!! That sounds is music to my ears!

[@dbn52]

I am mechanically challenged so this stuff amazes me totally.Do you know how BA decides which engine to buy for a certain plane? I know they have both Rolls and GE engines on 777 but does it make a difference if where it fly's to or just what is available?

[@mrifixplanes1813]

+dbn52 I can't say for sure. The first 22-24 777s that BA ordered were GE90 powered, the second batch of 24 were Rolls Royce powered. All of the 777-300ER's have GE90s as that was the only option. It probably just ends up being cost driven, which is the best deal at the time, which they think are most efficient on fuel etc. Certain planes do fly certain routes but I think that's more to do with the cabin configuration than the engines. Sorry I can't be more help, I just maintain them :)

[@dbn52]

+MrIfixplanes That does help explain things. Thanks very much.

[@mrifixplanes1813]

dbn52 Anytime

[@sqeeky100]

please! i want my turbo to sound like this in my car :))))

[@tranquynhanh8991]

then remove the internal combustion engine and install one of these :v

[@matt18333]

servicing Waste Separators, good times...not EGR's are one of my favorite things about the job

[@AlexDomain1]

Unleash the beast!!

[@SteveWard3928]

if they are running at full or even 80%, how do they keep they plane still?? And how is the guy not sucked into the engine?

[@mrifixplanes1813]

Just set the parking brake, they're strong enough to hold the power. TFW.

[@mrifixplanes1813]

The spoliers deploy automatically when reverse thrust is selected, which is part of the test. This ensures the thrust reverser systems works correctly after being reset as they are de-activated in the hangar for maintenance and safety.

[@BruceWayneWorld]

When you work the ramp you are taught where to stand, and areas of the plane to not walk in front of, and behind when engine is running. Plus the areas by the engine are marked with danger line logos.

[@MrKKUT1984]

It would seem like you would need alot more than just a parking brake to hold it in place.. Like it should be strapped to the concrete or something...that's crazy but awesome af

[@aaronwhite1786]

Looks like it might have a chock in front of the nose wheel too.

[@plummetplum]

Great video. Are there often leaks found and of so why? I didn't quite understand why no intake guards were required when two engines running, surely the danger is still present, or is it because an engineer can away more easily from a straight slide?

[@mrifixplanes1813]

Thanks for the comment firstly. It's not very often we find leaks no, we're checking to make sure the filters and drain plugs we've changed aren't leaking, that's just good maintenance practices.

[@ag6371]

Is this G-ZZZA?

[@Michael_Michaels]

THIS WAS AWESOME!!! Thank you!!!

[@mrifixplanes1813]

+MikeVonDoom You're welcome, thanks

[@JU-lj8hl]

Question to you: do you know how much pressure builds up in the combustion chamber? I did the math, 550 psi is 3.8 MPa which is extremely high therefore the energy of the fuel and air combined is high therefore increasing rate of energy that converts to thrust. Temperatures must be hovering about 9000 degrees F, no wonder this engine is so efficient.

[@mrifixplanes1813]

The GE90-76 is listed as having an overall pressure ratio of 40:1. That means on the ground at full power that pressure is around 580psi. Maximum pressure in the engine occurs after the last stage of the compressor, pressure actually drops a little in the combustion chamber as the gas is allowed to expand, further pressure drops occur through each turbine stage. If the combustor achieves higher pressure than the compressor outlet, then a surge occurs. I couldn't find combustion temperature, but the maximum turbine inlet temperature is listed as 2700 deg F. That's combustion air mixed with cooling dilution air, so it's reasonably hot yes.

[@JU-lj8hl]

MrIfixplanes But when you say ratio pressure is 40:1, means exactly what? What pressures are being compared?

[@mrifixplanes1813]

Juan Ulloa The overall pressure ratio is the ratio between compressor outlet pressure and the outside, or ambient, air pressure. In this case, 40:1, the compressor outlet pressure is 40 times greater than ambient air pressure at full power I presume. In the description I mention the fuel pressure is 550psi, that is in the feed tube after the high pressure fuel pump to the fuel spray nozzles and so not directly related to compressor outlet or combustion chamber pressure.

[@mrifixplanes1813]

dominique lachance Je suis vraiment désolé Dominique, je ne parle pas français. J'ai essayé de traduire votre commentaire en ligne, mais ce n'est pas très bon.

[@derekwall200]

thankfully the bird is anchored to the ground so that if the wheel brakes cant keep it from moving the anchored wheels will hold her still at full throttle

[@mrifixplanes1813]

derek wall No anchors, just brakes, and chocks placed near to the wheels.

[@derekwall200]

MrIfixplanes really I hope they'll be enough. the sound the engines are making is the aircrafts way of saying I want to fly please let me fly

[@mrifixplanes1813]

derek wall Each of the 12 mainwheels has a brake on the 777, each brake has 6 pistons which are pressurised with 3000psi hydraulic system fluid. The brake pack consists of 5 carbon rotors and 5 carbon stators. As a rough calculated guess, there is approx 54000lbs of force clamping the rotors and stators together on EACH wheel, they're telling the aircraft "you aint going nowhere mate" :)

[@derekwall200]

MrIfixplanes cool. im sure the ground crew feel safe now

[@amapolishplummer]

Can't the plane create enough thrust to break traction of the 14 tires, or is that just too much force required.

[@lesbrown7009]

The reverse test was what one should expect.

[@matt8863]

6:39 Speedbird..Go at throttle up.

[@henryyoung2116]

Expect nothing less from the Flagship ‼️‼️‼️‼️

[@daniellouie1718]

Where is this

[@derekwall200]

what is this area called that they're doing this in?

[@mrifixplanes1813]

This is the "Engine Ground Run Pen", it's located on the engineering base at Heathrow. It's a specially designed enclosure that can take the jet blast from the engines and reduce the noise to the surrounding area.There's two at Heathrow, one at the East base and one at the West base. www.google.co.uk/maps/place/51%C2%B028'29.0%22N+0%C2%B025'08.5%22W/@51.4747268,-0.4195852,241m/data=!3m2!1e3!4b1!4m6!3m5!1s0x0:0x0!7e2!8m2!3d51.4747256!4d-0.4190384 www.google.co.uk/maps/place/51%C2%B028'10.1%22N+0%C2%B025'42.2%22W/@51.4694722,-0.4293131,482m/data=!3m2!1e3!4b1!4m6!3m5!1s0x0:0x0!7e2!8m2!3d51.4694711!4d-0.4283998

[@thihal123]

I understand the brakes lock the wheels, but I'm surprised there is enough traction to keep the plane from skidding with wheels locked when engine is running full throttle.

[@mrifixplanes1813]

thihal123 The maintenance manual states that the aircraft must be at a certain minimum weight to perform a high power engine run. We increase the aircraft weight simply by adding large amounts of fuel (40,000KG usually). This makes sure the tires are firmly planted onto the tarmac. Thanks for watching :)

[@jetengine7]

The engines only reach about 70% power in this video. Full power ground run ups are rarely done.

[@jbymmlng]

AWESOME AWESOME AWESOME. MORE PLEASE

[@warotimi6182]

One question, what is the purpose of these high power runs on engines

[@mrifixplanes1813]

Mark Akin It's in the description

[@TheBlooRayChannel]

What if the brakes come loose....

[@Manayz]

the jet is chocked and before he runs ground they have a lil talk saying if the jet does jump chockes that he runs one way and they steer the jet the opposite.

[@applejacks971]

If his foot sips off the clutch the guy on the ground is sure gonna be surprised!

[@stefankoelsch788]

Is that safe to stand there?

[@mrifixplanes1813]

Stefan Koelsch Engine ground runs do contain an element of risk, however, the engineer is standing outside of the engine inlet hazard zone and is in communication with the engineer on the flight deck. Aircraft engineers are specifically trained on the hazards and procedures to carry out this task.

[@dodovomitory3496]

where is that? it doesn't look like an airport

[@mrifixplanes1813]

This test is carried out at the maintenance base in a "run pen", at the other side of the airport from the terminals.

[@dodovomitory3496]

interesting never seen or heard about something like that

[@soflaav8r]

did you have to have the engine anti ice on during this test, since there is freezing precip?

[@mrifixplanes1813]

Yes, the Engine Anti-Ice switches would have been turned to the "ON" position as the automatic ice detection system is inhibited on the ground. The engine anti system should be selected "ON" on the ground when the temperature is below 8°C and there is visible moisture in the air (rain/fog/sleet/snow). If the engine is at idle for 15 minutes in these conditions, a short burst to 50% N1 is required to make sure any ice that may have formed on the spinner, fan blades, and stator vanes is dislodged before accumulating too much.

[@soflaav8r]

Thanks for the reply! Do you have to take that info effect when recording your engine numbers, or is this engine run simply a leak check?

[@mrifixplanes1813]

soflaav8r This run was a simply a leak check, a high power setting was required because we'd disturbed the fuel systems on both engines.

[@soflaav8r]

MrIfixplanes Thanks for the info!

[@HNT63]

excellent videos

[@woooster17]

What % thrust can they run static.. 100%, the brakes hold with max power?

[@mrifixplanes1813]

Usually 80% is the maximum for static ground runs and normally one engine at a time with the other at 60% then swap over. 90% for a fan trim balance run is used but that's quite rare.

[@AhmedAwadKareem]

some one leaves spoilers up before start (;

[@mrifixplanes1813]

The spoilers don't go up until 1:36 when the thrust reversers are tested, they auto deploy when reverse thrust is selected.

[@AhmedAwadKareem]

MrIfixplanes thank`s

[@Felon_Confir]

it cleans like a vacuum