The spooling of this Qantas A380 makes me really love Rolls Royce
Posted by Rook8811@reddit | aviation | View on Reddit | 123 comments
Posted by Rook8811@reddit | aviation | View on Reddit | 123 comments
Expensive-Pay-9821@reddit
It sounds like a car
ThatOneComputerNerd@reddit
Idle-push to 40%-check everything’s good-TO/GA engaged.
I could listen to this all day
AVeryHeavyBurtation@reddit
Where we're going we don't need no man flex!
elingeniero@reddit
With how wet that runway looked, maybe not!
MyWholeTeamsDead@reddit
That's not what that is.
The A380, whether in FLX or TOGA, will hold thrust below target thrust for a bit -- no matter if you've selected higher -- before going to TO thrust.
elingeniero@reddit
This is fascinating, thank you.
hoppla1232@reddit
Very interesting, thanks for the explanation
Which_Material_3100@reddit
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!
Tight_Hedgehog_6045@reddit
Sounds like the old THX audio intro from the 90s and early 2000s.
Ecstatic-Ganache921@reddit
Agreed.
deleted_by_reddit@reddit
[removed]
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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.
LurpyGeek@reddit
You should listen to this.
https://www.20k.org/episodes/thxdeepnote
bkuri@reddit
Also r/20khz
SSpartikuSS@reddit
That was incredible. Thank you for that. I had no idea how much went behind creating that sound.
Navydevildoc@reddit
I'll always upvote a 20K reference. Dallas and his team are beyond awesome.
yoweigh@reddit
I have Star Wars on Laserdisc and that's my favorite part.
Axman6@reddit
Yeah my first thought is “That’s the THX deepnote with a low pass filter”. Fucking epic.
jvon24@reddit
Hahaha I came here to say the exact same thing!
Tight_Hedgehog_6045@reddit
It's really hard to unhear it.
spectrumanalyzer@reddit
https://youtu.be/meOhPoCLSj4?si=QSWT_VeIo6sz8Zcm
quemaspuess@reddit
I could have listened to this 1000000x and never came to that conclusion, but you’re absolutely correct
Tank-o-grad@reddit
The Audience is Listening
UltraViolentNdYAG@reddit
lol
UltraViolentNdYAG@reddit
I thought it was an overlay... n/m
Maximus13@reddit
https://i.imgur.com/6LVmh9U.gif
Wide_Jellyfish1668@reddit
100% what I came here to say!!!
Grimol1@reddit
Exactly what I came here to say. I genuinely thought they had blended the sound at first.
UnderstandingNo5667@reddit
How you can look at this and not think it’s the coolest thing of all time baffles me.
EconomicsDirect7490@reddit
It never ceases to amaze me how that behemot can fly
whiskeytown79@reddit
The vertical stabilizer size on these things is crazy. More square footage than most houses.
satellite779@reddit
It was to support the A380-900 which was never developed.
somepilot16@reddit
Wouldn’t the vert stab actually be sized for the shorter fuselage, not the longer one?
Gluteuz-Maximus@reddit
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
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.
Gluteuz-Maximus@reddit
Weird way of writing it, but no. The simplified formula is
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?
Nmnmn11@reddit
Woahhh really?
satellite779@reddit
Yes. Wings are oversized as well.
https://simpleflying.com/airbus-a380-stretch-2/
Nmnmn11@reddit
Wow so it was actually engineered to be ready for an additional section to just get dropped in?
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.
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.
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.
ginji@reddit
It's the perfect size for the Qantas livery though
The3levated1@reddit
Yeah, and the elevator is a reused A320 wing.
Conscious-Anybody553@reddit
The A380 elevator is much larger than an A320 main wing
https://www.reddit.com/r/aviation/s/Ddu1ciCL9n
Which_Material_3100@reddit
Whoa! Never knew that! That is cool!
Powerful_Hair_3105@reddit
That was wicked cool, this would make great sound effects.
Rook8811@reddit (OP)
All cAll credits go to this amazing dude
DutchBlob@reddit
Awesome how he was able to outrun the a380 to capture both the spooling up as well as the take off
Yummy_Crayons91@reddit
I've met Speedbird a few times, he's a great funny guy.
Electrical-Fix7659@reddit
NNNNNYYYYOOOOOO
aerochiquita@reddit
This is epic.
ZeneticX@reddit
Imagine showing this to the Wright brothers or Howard Hughes
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
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.
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.
discombobulated38x@reddit
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.
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.
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.
discombobulated38x@reddit
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!
LightningGeek@reddit
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.
ISTBU@reddit
You're correct in your last paragraph - Bonus points for scalloped trailing edges on the nacelles.
discombobulated38x@reddit
That's the fan tips going transonic, you're hearing a bunch of rapid shock waves not dissimilar to a minigun.
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. 👌😂
think-rationally-now@reddit
Biggest Question: what were you doing so close the beast ?
Next-Competition5690@reddit
Outstanding video!!
Resident_Net_1998@reddit
What madness
Normiss2000@reddit
Wow those spool up FAAASSSSSST
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.
lolariane@reddit
Looks perfect on my phone! 🤷♀️
eruditeimbecile@reddit
I'm not watching it on your phone.
LostInAPortal@reddit
Love to see the METOTS in action
Mighty_Mite50@reddit
Power is set. V1 Rotate Positive rate, gear is coming up
orangeinvader75@reddit
This would put a horn on a jellyfish
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
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.
No-Bison-5397@reddit
The greatest ever
Top_Librarian1403@reddit
rolls royce should start making full end planes now
MalleDigga@reddit
Airbus is einfach genial (-':
newaccountzuerich@reddit
I do like the staccato buzzsaw of the blade tips' transsonic passage. Fantastic engineering, and a nice demonstration of fluid dynamics physics.
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.
chicofranchico@reddit
https://tenor.com/en-GB/view/simpsons-movies-loud-noises-explode-gif-16355929
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.
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.
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.
IGotRangod@reddit
Which airline, Qantas? I'm sure not all of them have bars
the_silent_redditor@reddit
Ah, maybe it’s only Emirates that has the bar.
IGotRangod@reddit
According to a random Facebook anecdote I found, it's Qatar, Emirates & Etihad that have bars. The rest are probably no bar.
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.
Brush_With_Frame@reddit
Exceptional!
immunotransplant@reddit
THX
SentinelChickenFarm@reddit
I love these planes so much, I am going to miss them when they are gone.
etfmylife@reddit
That is sexy
hat_eater@reddit
When all jets all electric, that's how they'll sound.
Scurbs28@reddit
Sounds like a hot rod going by open throttle
devilleader501@reddit
Nothing like the spray of rain and JP-8 exhaust fumes
ukulelebug@reddit
N1 spool
joshwagstaff13@reddit
Personally, there's no better sound than an RB211 at take-off power.
HesSoZazzy@reddit
747 will always be the love of my life but that sound on rotate was glorious.
Josipbroz13@reddit
That is one big ass plane
Logical_Frosting_277@reddit
There are quiet engines now.
fdwyersd@reddit
love the A380 roar
time4nap@reddit
Letting the ponies out!
willfoxwillfox@reddit
There are very few reasons to not love Rolls-Royce
UltraViolentNdYAG@reddit
That ending audio clip sounds like some odd piston engine. Cool clip and nice share...
ElongatedBear@reddit
BEAUTIFUL
deltapilot97@reddit
Awesomeeeee!! Drives me insane when they leave the cabin lights on for takeoff though
Which_Material_3100@reddit
Beautiful capture!
GeraintLlanfrechfa@reddit
Like FLEX 67.. ah fuckit, TOGA.
agha0013@reddit
the magic of four engines working in harmony making beautiful engine music. Something the age of big twins doesn't replicate
MissNashPredators11@reddit
Eargasm right there holy shit— 🔥🔥
LeafsWinBeforeIDie@reddit
Their old classics sound pretty great too
blinkersix2@reddit
I have got to take a trip to a major airport to find one to listen to. It won’t be nearly as good as this.
Imlooloo@reddit
Burning about 90lbs of fuel a second on the take off.
Informedecisions@reddit
That sounds modified!
SeatCompareai@reddit
Full volume 🔊 🥹
yycmobiletires@reddit
Watching the water vapor collect in front of the fan is neat when it gets to full power.
Mediocre-Catch9580@reddit
Sweet music
deltaforce5000@reddit
They’re all out of sync so much its noticeable cause it’s sounds like a chord being played
robo-dragon@reddit
Damn, what a sound! Awesome!
CouchPotatoFamine@reddit
I flew on a TAP A330-900neo from SFO to Lisbon. Loved the sound (or lack thereof) of those RRs!
Philman_@reddit
That was delightful