The spooling of this Qantas A380 makes me really love Rolls Royce

Same. The visual with the rain, the wingtip vortices at rotation, and the downfield cut to the liftoff was perfect. I’ve replayed this a few times now. What a mood!

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Tight_Hedgehog_6045@reddit

Sounds like the old THX audio intro from the 90s and early 2000s.

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aviation-ModTeam@reddit

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SSpartikuSS@reddit

Man that brings back memories. My step brother and I thought that this was the coolest sound when we first heard it watching an old VHS tape.

We rewound the movie I can't remember how many times just to hear it. We would raise our arms like we were winning a battle, or gaining some magical power. Good times.

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LurpyGeek@reddit

You should listen to this.

https://www.20k.org/episodes/thxdeepnote

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SSpartikuSS@reddit

That was incredible. Thank you for that. I had no idea how much went behind creating that sound.

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Navydevildoc@reddit

I'll always upvote a 20K reference. Dallas and his team are beyond awesome.

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yoweigh@reddit

I have Star Wars on Laserdisc and that's my favorite part.

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Axman6@reddit

Yeah my first thought is “That’s the THX deepnote with a low pass filter”. Fucking epic.

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jvon24@reddit

Hahaha I came here to say the exact same thing!

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spectrumanalyzer@reddit

https://youtu.be/meOhPoCLSj4?si=QSWT_VeIo6sz8Zcm

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quemaspuess@reddit

I could have listened to this 1000000x and never came to that conclusion, but you’re absolutely correct

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Grimol1@reddit

Exactly what I came here to say. I genuinely thought they had blended the sound at first.

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UnderstandingNo5667@reddit

How you can look at this and not think it’s the coolest thing of all time baffles me.

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EconomicsDirect7490@reddit

It never ceases to amaze me how that behemot can fly

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whiskeytown79@reddit

The vertical stabilizer size on these things is crazy. More square footage than most houses.

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satellite779@reddit

It was to support the A380-900 which was never developed.

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somepilot16@reddit

Wouldn’t the vert stab actually be sized for the shorter fuselage, not the longer one?

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No, vertical stabilizer are designed based on the volume of the stabilizer compared to the main wings. The volume is the area of the stabilizer multiplied by the distance from the wings divided by the volume of the wings. So the further back, the higher the volume of the stabilizer

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akshar9@reddit

Not sure what you’re trying to say as you just proved him right. Shorter you get, the bigger area you need for the same volume.

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Gluteuz-Maximus@reddit

Weird way of writing it, but no. The simplified formula is

V_v = S_v * L_v / (S_w * b) Where S_v is the surface of the vertical stabilizer, L_v the distance from the neutral point of the wing, S_w the surface area of the wings and b the wingspan. The further back you go the more effective a large stabilizer will be in relation to the size of the wings

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akshar9@reddit

Yes exactly providing you keep surface of the stab constant. This is precisely why shorter aircraft need bigger stabs and longer aircraft can get away with smaller stabs. What are you trying to say?

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Nmnmn11@reddit

Woahhh really?

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satellite779@reddit

Yes. Wings are oversized as well.

https://simpleflying.com/airbus-a380-stretch-2/

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Nmnmn11@reddit

Wow so it was actually engineered to be ready for an additional section to just get dropped in?

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jamesinc@reddit

You can a different and kind-of-opposite version of this on the Boeing 747SP, where the vertical stab in particular is huge, much larger than the longer 747-100 it is based on. This is because the stabs are closer to the aerodynamic centre of the aircraft, so they have less mechanical advantage and must be larger to achieve the same degree of control as the longer -100.

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satellite779@reddit

Most planes are. That way, they have same type rating between variants. E.g. 737 Max 7, 8,9 and 10 are all different lengths and capacities.

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throwawabooboo@reddit

There’s a trend I see airlines are trying to have more seats. With higher number of customers some routes are so dense and using a super jumbo could be the answer to it. So quad jets might come back.

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ginji@reddit

It's the perfect size for the Qantas livery though

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The3levated1@reddit

Yeah, and the elevator is a reused A320 wing.

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Conscious-Anybody553@reddit

The A380 elevator is much larger than an A320 main wing

https://www.reddit.com/r/aviation/s/Ddu1ciCL9n

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Which_Material_3100@reddit

Whoa! Never knew that! That is cool!

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Powerful_Hair_3105@reddit

That was wicked cool, this would make great sound effects.

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Rook8811@reddit (OP)

All cAll credits go to this amazing dude

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DutchBlob@reddit

Awesome how he was able to outrun the a380 to capture both the spooling up as well as the take off

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Yummy_Crayons91@reddit

I've met Speedbird a few times, he's a great funny guy.

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Electrical-Fix7659@reddit

NNNNNYYYYOOOOOO

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aerochiquita@reddit

This is epic.

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ZeneticX@reddit

Imagine showing this to the Wright brothers or Howard Hughes

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TellMeNowIMustKnow@reddit

I think about the Wright Brothers every single time I watch planes and give them a silent thanks. They would really be impressed with our progress

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Square_Ad8756@reddit

Does anyone know why those engines make that grinding sound? I used to live under the departure path at Brisbane and the highlight of the evening was always hearing those distinctive engines as the A380 left for Dubai.

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ISTBU@reddit

The fan blades spinning against the static blades that are behind them essentially act the same way as an electro-mechanical siren works - chopping the air x-amount of times per second (the frequency you hear) - the volume of air moving through it corresponds to, you guessed it, the "volume" of the sound you hear.

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discombobulated38x@reddit

The fan blades spinning against the fixed blades that are behind them essentially act the same way as an electro-mechanical siren, chopping the air x-amount of times per second (the frequency you hear). The volume of air moving through it corresponds to, you guessed it, the "volume" of the sound you hear.

You can more or less completely detune rotor/stator interaction noise by selecting the appropriate number of rotors and stators, optimising for the exact opposite of a siren.

All jets make very loud turbine noise, but the super-high-bypass turbofans (where the fan blades are MUCH larger than the turbine blades) basically drown it out.

The turbine exhaust tuned noise is what you can hear at lower power settings in the first half of this vid, once the exhaust nozzle is choked that can be a much bigger source of noise.

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iksbob@reddit

Sounds like the kind of thing that could be eliminated with swept or curved blades (resulting in a scissor-action between rotor and stator rather than cycling open/blocked action). It's the turbine version of straight-cut vs. helical gears. I wonder what performance benefit straight blades provide.

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discombobulated38x@reddit

I wonder what performance benefit straight blades provide?

The straighter the blade the greater the fatigue life, as the centrifugal load on a fan blade is preposterous. It's pretty much the limiting factor for all highly swept rotating aerofoils!

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LightningGeek@reddit

Sounds like the kind of thing that could be eliminated with swept or curved blades (resulting in a scissor-action between rotor and stator rather than cycling open/blocked action). It's the turbine version of straight-cut vs. helical gears. I wonder what performance benefit straight blades provide?

The A380 uses either the Rolls Royce Trent 900, or the Engine Alliance GP7000 both of which have curved blades, so that should not be the cause of the geared noise you hear.

I work on 777's which use the Trent 800, and they make exactly the same gear whine type noise at high power settings. Whereas the GE-90 equipped 777's do not make that same noise.

The only difference between the GE90, GP7000 and Trent series is that the Trent is a 3 spool design, whereas the others are both twin spools. Here is a diagram of a twin spool to help visualise, the difference being the Trent has an intermediate pressure spool as well as the high and low pressure spools of the other engine types.

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ISTBU@reddit

You're correct in your last paragraph - Bonus points for scalloped trailing edges on the nacelles.

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discombobulated38x@reddit

That's the fan tips going transonic, you're hearing a bunch of rapid shock waves not dissimilar to a minigun.

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danit0ba94@reddit

Quietest airplane i ever heard takeoff. And I've viewed it taking off from all angles except straight over my head.

Which is the one angle I most desire to see it from. Take me home country wake turbulence. 👌😂

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think-rationally-now@reddit

Biggest Question: what were you doing so close the beast ?

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Next-Competition5690@reddit

Outstanding video!!

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Resident_Net_1998@reddit

What madness

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Normiss2000@reddit

Wow those spool up FAAASSSSSST

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eruditeimbecile@reddit

Man, if only someone would invent a camera that could take video in a long and wide perspective of objects that were long horizontally! I bet you could make a million dollars on that idea.

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lolariane@reddit

Looks perfect on my phone! 🤷‍♀️

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eruditeimbecile@reddit

I'm not watching it on your phone.

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LostInAPortal@reddit

Love to see the METOTS in action

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Mighty_Mite50@reddit

Power is set. V1 Rotate Positive rate, gear is coming up

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orangeinvader75@reddit

This would put a horn on a jellyfish

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ryanturner328@reddit

I hate that the lights are on in the cabin during departure at night. The acclimation if there is an accident and you’d have to evacuate would be bad

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9VTF@reddit

The T900 was a problem child in the early days of its development programme, similar to the T1000, but they both turned out ok in the end.

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No-Bison-5397@reddit

The greatest ever

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Top_Librarian1403@reddit

rolls royce should start making full end planes now

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MalleDigga@reddit

Airbus is einfach genial (-':

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newaccountzuerich@reddit

I do like the staccato buzzsaw of the blade tips' transsonic passage. Fantastic engineering, and a nice demonstration of fluid dynamics physics.

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bath-bubble-babe@reddit

I've never flown on one, but I did sign off a certification report or two for it.

I always tell people I still don't know how they fly, but I'm sure there's some magic involved there somewhere.

I remember at the time, a reporter tried recording the sound of it taking off for radio, expecting a big roar. Instead, it was a 'nothing to hear here', being notable for how quiet it is - you could barely hear anything on the recording.

I still love to have worked on the systems I did at R-R.

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chicofranchico@reddit

https://tenor.com/en-GB/view/simpsons-movies-loud-noises-explode-gif-16355929

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wotmate7@reddit

The craziest thing is that inside the cabin on takeoff, you can pretty much not hear the engines at all, just the sound of air rushing past. Such a smooth, quiet, and comfortable aircraft to fly on.

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Landscape4737@reddit

When I flew on one it felt so smooth I felt that if I wanted,I could balance a pen on its end on my tray, it was so quiet too.

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the_silent_redditor@reddit

I was lucky enough to sit upstairs near the front.

I thought we were still attached to the tug when we started moving forward; I really didn’t hear all the engines start.

There is a bar at the back of the top floor. It’s a surreal experience to sit sipping expensive malts out of a crystal glass at 40,000ft.

Definitely the best passenger experience out of modern aircraft.

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IGotRangod@reddit

Which airline, Qantas? I'm sure not all of them have bars

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the_silent_redditor@reddit

Ah, maybe it’s only Emirates that has the bar.

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IGotRangod@reddit

According to a random Facebook anecdote I found, it's Qatar, Emirates & Etihad that have bars. The rest are probably no bar.

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the_silent_redditor@reddit

Aye, that sounds about right.

Definitely Emirates and Qatar as I’ve seen it, Ethiad I’d be surprised if it didn’t given the competition.

Wild concept.

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