Boeing 777 RR Trent 895-17 High Power Ground Run - LOUD !!!

[TurbineProductionsX]

which british airways maintenance centre is this?

[MrIfixplanes]

@TurbineProductionsX Heathrow

[manchesterspotter1]

@MrIfixplanes anymore videos to come?

[MrIfixplanes]

@manchesterspotter1 yeah i hope so, not sure when or of what though

[manchesterspotter1]

@MrIfixplanes alright mate cheers :)

[MyEmpire91]

i think it wasnt loud enough...

[MrIfixplanes]

@MyEmpire91 Get better speakers then :)

[TheLaughingMatter123]

you woke my parents up! dammit!

[MrIfixplanes]

@TheLaughingMatter123 This is one of the largest gas turbine engines fitted to an airliner doing a high power run on the ground, you weren't expecting it to be quiet were you? :p

[TheLaughingMatter123]

@MrIfixplanes well thats true but my volume was on the last part before mute........

[MrIfixplanes]

@TheLaughingMatter123 Well at least it was realistic for you then lol. I apologise, and have added edited the title to hopefully avoid such embarrassments in the future. Thanks for watching.

[phatcarz]

nice video, is that heathrow airport?

[4crevis]

Thanks, very informative description and great video! Shame the sound disappeared momentarily half way through, but you did explain about that in the description, so no problem!

[MrIfixplanes]

@4crevis Yeah it's a pity about the sound, I did film an engine acceleration test but there was no sound at all so pretty pointless posting it, which is a shame as it sounded fantastic.

[4crevis]

@MrIfixplanes How did you get in to this industry? I am looking in to some sort of course i can do i have always been interested in anything related to aircraft! I take it you're a Technician/Engineer?!

[normanmj]

Are those intake cage's pinned into the ground? Never seem them before. I've worked F-15's, B-2's, KC-135s, KC-10's, and a bunch other and never seen them used.

[MrIfixplanes]

@normanmj Not pinned to the ground no. They have a wheel and a jack in each corner , the jacks are the red things in the corners. We jack the cage until the wheels are off the ground, the cage is pretty heavy so it doesn't move.

[peerless77]

I saw pictures of someone who got sucked into these engines, they came out the other end like mince meat, a mushy red mess.

[boeingnerd77]

so what were you doing with this aircraft(i presume this is the same one with emeragncy slides)

[MrIfixplanes]

@boeingnerd77 This is not the same aircraft, no. I see 3-4 different 777s every week. Each aircraft comes into the hangar every 3 months for an A-Check, which is routine servicing and fixing defects for about 24hours. Once a year each one has a B-Check, which is more in depth servicing and testing of aircraft systems, that lasts about 48hours. This one had just been in for B-check, the fuel system had been disturbed, so a high power run was needed to test serviceability .

[cliffsoar]

3 shaft monster!

[SuperMillions100]

I wish I was there to witness the sheer power

[Thepylot78]

What is the danger zone around these engines (the minimum distance from them you can be without danger of getting sucked in)? I read somewhere that for the 767 (for CF6 engines) it's something like a 25' radius in front of the intake where you'd be in danger of getting sucked in, but for the 777 (esp. with GE90-115's) you'd have to be further away, I'm sure. I'd say you've got balls the size of the moon to be filming there!

[raykrislianggi]

@Thepylot78 Lucky it's not GE90-115B lol. You can definitely feel the wind sucking you.

[MrIfixplanes]

@raykrislianggi The inlet danger zones for the GE90-115B are the same as for this Rolls Royce Trent funnily enough.

[MrIfixplanes]

@Thepylot78.....Inlet danger zones are, Engine Idle: 15ft (4.6m), Breakaway Power (just enough to start taxiing): 28.5ft (8.7m), Takeoff Power: 63ft (19.2m). Slightly more dangerous at the exhaust end, Idle: 175ft (53m), Breakaway: 275ft (84m), Takeoff: 2100ft (640m).....At this power (about 3/4 takeoff) the danger area is about 47ft (14m). The engine is about 68ft (20.5m) from the nose, so I'm around 20ft (5m) clear, you certainly don't feel any suck at that distance. :-)

[dookiekong007]

@MrIfixplanes wow, what held it in place like that?

[MrIfixplanes]

@dookiekong007 Just the aircraft brakes and rubber chocks against the wheels. The 777 has 12 carbon brake packs, one on each main wheel, that's quite a lot of braking force.

[dookiekong007]

@MrIfixplanes Im really on the fence with this, but would it be possible at some point when leaving the engine running constantly while the aircraft sits still to break away from the wing? but then I also thought that since air is being sucked through so not a lot of force acts on the engine. So?

[MrIfixplanes]

@dookiekong007 There's a huge amount of force acting on that engine here, about 65,000lbs (29,500Kg). At takeoff power it's 85,000lbs (38,600Kg) The engine is literally trying to pull itself off the front of the wing. But the bolts and structure are huge, capable of taking much more load that. But a seperation has happened before on El Al Flight 1862, a 747's no.3 engine came off and then hit no.4 engine, making that break off too, the plane crashed into an Amsterdam hotel.

[Sterlingjob]

@MrIfixplanes Aircraft do jump chocks! Ask the ATC lasham guys!

[MrIfixplanes]

@Sterlingjob I'm sure they do. However, the question was "What's holding it in place like that?", and the answer has to be "the brakes and the chocks", there is nothing else!

[Sterlingjob]

@MrIfixplanes So do feet stay on pedals is the parking brake suffice? What is the park brake pressure??

[MrIfixplanes]

@Sterlingjob Just the parking brake on a 777, the engineer running the engines is covering the foot brakes just in case. All the hydraulic systems, including the brakes, operate at 3000psi.

[neonbluen851]

looks like a soapy washing machine

[Thepylot78]

@neonbluen851 The "soapy washing machine" look is moisture rapidly condensing out of the air in the huge pressure drop in the engine intakes (where there's a big pressure drop like that, where air is rushing into a near-vacuum, there's a huge temperature drop too). When you see that, you know there's an insane amount of power and suction there.

[tompdm]

you can walk there without beeing sucked in? oO

[Lagdieb]

very nice vid!! thx :D

[jordyboy321]

what a monster