There are two factors that lead to silencing the engines... the first one described as thebazzoid said... the buzz sound created by the fan blades is left behind by the air speed... and secondly, because after taking off there's no need for full thurst... therefore... the fan speed is reduced by the pilot or the AP... making much less noise.
I would be asleep like a baby. The sound of the engines is awesome and the rain. Better than xanzax or better yet take one before departure. Great video!
Yep, that's me. Someone who sits in the corner all day. You know, I'm just a transport design student. I appreciate technology just as much as the next guy. If anything I hope to embellish what I know into my designs to make your next car/train/boat/plane ride even more enjoyable as the last... At the moment I'm working on some train interiors and even the infrastructure surrounding the system as a whole. So yeah, I just sit in a corner and design beautiful things all day.
@reedyspeedy12 The drop in sound is the change in thrust rating, specifically TOGA (Take off / Go Around) thrust to CLB (Climb) thrust. The pilots probably determined the commanded thrust was going to be to low (possibly due to a headwind) and either manually increased or changed the thrust back to either FLX/MCT or TOGA.
@bhm1712 It's not quite that. It's actually minor asymmetry among the blades that causes shock waves to collide and combine, producing a low-frequency buzz. The solution is to machine the blades to even higher tolerances than they already have, but that's very expensive, and has no real payoff except to reduce the buzzing sound, so it isn't currently done.
"FLEX" is the standard takeoff thrust setting used on Airbus aircraft, unless departing a contaminated (wet / icy) runway or if performance constraints (short runway or hot and high) exist, in which case TOGA (full thrust) is used. "FLEX" takeoff settings use an assumed temperature thrust reduction to preserve engine wear and thereby prolong engine life.
@reedyspeedy12 when you hear that buzz saw sound, its the tips of the fan blades breaking the speed of sounds and it whines too because the air cant escape out and keep getting sucked in. but that channge in sound is the fan blades breaking the sound barrier and differential pressure inside the engine
@TrackStar828 The sound you hear is the sound waves created by the turbine blades at high rpm, due to the fact that the tips of the blades are exceeding the speed of sound. It is only audible when sitting inline with or infront of the engine intake. The sound is more audible at lower speeds (for instance when taking off) and fades out at higher air speeds when the airspeed impact noise increases or the engines are throttled back enough.
@reedyspeedy12 That sound is most likely the aircraft reaching the optimal speed at that altitude and flightpath. Those engines are never running full throttle and actually run maybe 60-80% in flight. They will push 90% for take off.
@reedyspeedy12 I think it was still under 10.000 feet, meaning that the plane wasn't allowed to go faster than 250 knots. That's why the engine dropped down. Sometimes the autothrottle can be very unpredictable, i think that's why it went up and down again.
@reedyspeedy12 The pilot is just pulling back power then gives a little more than pulls back again at the end of the video; below 10,000 ft the speed limit is 250 knots, he was probably taking care of that (automatic pilot comes later); plus, the higher the plane gets the less engine power it needs anyway to stay up there (less gravity); if you noticed, the higher you are the less the engines roar. A pilot reading this might correct me but this is what I know.
I've been noticing this sound over the last couple of years...First time I heard it I thougth something was wrong:) 5-10 years ago the engines didn't sound like this, in my mind at least. Always wondered if it's a new type of engine that causes this sound.
@reedyspeedy12 It means that when the plane has reached it's cursing altitude, and they must put the engines slower, or the there will be no more gas left. So there was nothing strange about that.
@reedyspeedy12 It is simply going on from takeoff power (Almost full power if not full) to lower the engines power a bit since acording to FAA rules you cant exceed 250knts under 10,000ft so they must slow down a bit if they are lower than 10k feet.
@craigp1231 Nope, ATC probably told them to maintain their current altitude. The reduction from takeoff thrust to climb thrust would've occured far earlier, since by 3:15 the flaps are completely retracted.
@reedyspeedy12 & Dave1Suspect. The "drop" in power is produced by changing from "takeoff thrust" to "climb thrust" as shortly after takeoff, you no longer need full power (takeoff thrust)
To Mario!! no, i was not a pilot. I was a groung engineer, and worked exclusivly on Rolls Royce RB211 engines. As i am not scientific, i can only assume the reason the "Buz saw sound" gradually fades, is because the air speed increases and you slowly leave the sound behind. The "Buz saw sound" is created by the fan blades in the front of the engine. It is worth noting, that a jet engine produces its greatest thrust whilst stationary. (hence the terrific acceleration/thrust on the take off run)
The FAA equivalent is EASA. I believe the rules are also the same in Europe and there are a few exceptions to this rule such as 747, and some ultrasonic yet as the Concorde, which can ask the ATC for clearance for more speed to climb more optimally. :)
Okay, Dave. For the sake of us blind folks, can you please tell me what kind of plane that was? At first I thought it was a 767-300, but I now wonder if it's not an Airbus a340. I know it's not a DC9, because the jet whine is just over an octive higher in pitch. It's can't be a 757 either, because its whine is 5=1/2 notes higher. I sure do love it, though. I haven't flown since 2008 when I flew to California and back.
@reedyspeedy12 Pulling back on power usually means noise abatement. Aircraft was probably flying over a populated area that mandated noise abatement procedures.
Listen, for the last time - everyone - I have no qualms with you listening to the sound of an aircraft's engines. In fact, I'm glad somebody is. There are people employed by Rolls Royce, CFM International etc who actually tune the sounds of these engines - and I'm sure they'd be thrilled to know that you are passionate about the end result!
Lol love it I'm going abroad 1 month and I'm terrified but these calm me down I'm 12 and going to tenerife because it is a short flight but now everyone wants me to go to america
@reedyspeedy12 Pulling back on the power for noise abatement. Aircraft was problably flying over a populated area that required noise reduction from aircrafts flying overhead.
@reedyspeedy12 planes have to remain at at speed of 250 knots or below until the have reached 10,000 ft. so thats the sound of the pilot slowing the plane down a little.
The engines don't go silent after takeoff as cabin crew I have experience on many types of aircraft it's just the effect the pressure has on your hearing
@reedyspeedy12 below 10.000 ft the airplane is restrected to fly at 250 knots indicated so the airplane must have reached 250 and redused the engins not to overcome it.
@reedyspeedy12 Normally this would be the Flight Management Computer switching the engines from takeoff thrust to climb thrust (reduces wear on the engines and uses slightly less fuel) but in this case, maybe he overrode the FMS because he wanted to climb at a higher vertical speed? Who knows.
Yeah I've been on one about 10 times and I'm still scared shitless. This is gonna sound dumb, but the only way that you're gonna get rid of your fear is to go on it. If you're scared of heights too look outside. It's scary and exciting at the same time.
for people who are crapping themselves in terror - flying is actually one of the safest modes of transport!! think about it, most people have been in a car crash at some point in our lives yet arent scared 2 drive. one or two out of the millions of flights each year crash and its really big news when it happens because it doesnt happen a lot.
Nice Video and Nice Sound.
Beautiful sound! Best engine sound a pilot could ever want!!! *Gratified and serene face*
There are two factors that lead to silencing the engines... the first one described as thebazzoid said... the buzz sound created by the fan blades is left behind by the air speed... and secondly, because after taking off there's no need for full thurst... therefore... the fan speed is reduced by the pilot or the AP... making much less noise.
I love these airliner videos...thanks
Im absolutely terrified of planes but i feel like these videos are calming me down
I feel the exact same ^^
It’s fine I flew in a plane bigger than that for three hours
Realy Amazing Sound of Jet-Engine.
correct sound
I would be asleep like a baby. The sound of the engines is awesome and the rain. Better than xanzax or better yet take one before departure.
Great video!
Yep, that's me. Someone who sits in the corner all day. You know, I'm just a transport design student. I appreciate technology just as much as the next guy. If anything I hope to embellish what I know into my designs to make your next car/train/boat/plane ride even more enjoyable as the last... At the moment I'm working on some train interiors and even the infrastructure surrounding the system as a whole. So yeah, I just sit in a corner and design beautiful things all day.
@reedyspeedy12 The drop in sound is the change in thrust rating, specifically TOGA (Take off / Go Around) thrust to CLB (Climb) thrust. The pilots probably determined the commanded thrust was going to be to low (possibly due to a headwind) and either manually increased or changed the thrust back to either FLX/MCT or TOGA.
@bhm1712 It's not quite that. It's actually minor asymmetry among the blades that causes shock waves to collide and combine, producing a low-frequency buzz. The solution is to machine the blades to even higher tolerances than they already have, but that's very expensive, and has no real payoff except to reduce the buzzing sound, so it isn't currently done.
Ah. So that is where my lawn mower engine went.
good video thank's I'm preparing for my trip mentally because I'm a little nervous to fly :) any recommendation I accept it
V2500 engines do sound awesome!
I'm terrified of planes and watching these helps so much :)
"FLEX" is the standard takeoff thrust setting used on Airbus aircraft, unless departing a contaminated (wet / icy) runway or if performance constraints (short runway or hot and high) exist, in which case TOGA (full thrust) is used.
"FLEX" takeoff settings use an assumed temperature thrust reduction to preserve engine wear and thereby prolong engine life.
The best sound I’ve ever heard in my life
Incredible isn't it 👌🏻
@Dave1Suspect I think It depends on a type of engine. Both B737 and A320 series can have CFM56 family engines...That´s why they sound similar.
@reedyspeedy12 when you hear that buzz saw sound, its the tips of the fan blades breaking the speed of sounds and it whines too because the air cant escape out and keep getting sucked in. but that channge in sound is the fan blades breaking the sound barrier and differential pressure inside the engine
@TrackStar828 The sound you hear is the sound waves created by the turbine blades at high rpm, due to the fact that the tips of the blades are exceeding the speed of sound. It is only audible when sitting inline with or infront of the engine intake. The sound is more audible at lower speeds (for instance when taking off) and fades out at higher air speeds when the airspeed impact noise increases or the engines are throttled back enough.
best recorded sound ever... only a few videos show the real sound we hear in a real plane. (sorry for my bad english :P)
@reedyspeedy12 That sound is most likely the aircraft reaching the optimal speed at that altitude and flightpath. Those engines are never running full throttle and actually run maybe 60-80% in flight. They will push 90% for take off.
@reedyspeedy12 I think it was still under 10.000 feet, meaning that the plane wasn't allowed to go faster than 250 knots. That's why the engine dropped down. Sometimes the autothrottle can be very unpredictable, i think that's why it went up and down again.
@reedyspeedy12 The pilot is just pulling back power then gives a little more than pulls back again at the end of the video; below 10,000 ft the speed limit is 250 knots, he was probably taking care of that (automatic pilot comes later); plus, the higher the plane gets the less engine power it needs anyway to stay up there (less gravity); if you noticed, the higher you are the less the engines roar.
A pilot reading this might correct me but this is what I know.
Thats what it sounds like when you're sitting right next to the engine. Its normal.
@sharartimunda A Video Camera or a camera runs on batteries. It doesn't really affect the plane anyways...
What is the model of the engine, because such sound I heard today near my work
I've been noticing this sound over the last couple of years...First time I heard it I thougth something was wrong:) 5-10 years ago the engines didn't sound like this, in my mind at least. Always wondered if it's a new type of engine that causes this sound.
That engine sounds amazing:):):):)
@reedyspeedy12 It means that when the plane has reached it's cursing altitude, and they must put the engines slower, or the there will be no more gas left. So there was nothing strange about that.
a320 by the looks
Yep, same here. Engines sound like those on A320s that I flew on in past.
@reedyspeedy12 It is simply going on from takeoff power (Almost full power if not full) to lower the engines power a bit since acording to FAA rules you cant exceed 250knts under 10,000ft so they must slow down a bit if they are lower than 10k feet.
That sounds amazing!!
@craigp1231 Nope, ATC probably told them to maintain their current altitude. The reduction from takeoff thrust to climb thrust would've occured far earlier, since by 3:15 the flaps are completely retracted.
That takeoff was really smooth IMO.
@reedyspeedy12 & Dave1Suspect. The "drop" in power is produced by changing from "takeoff thrust" to "climb thrust" as shortly after takeoff, you no longer need full power (takeoff thrust)
Awesome sound! I wonder if they are CFM or PW engines.
To Mario!! no, i was not a pilot. I was a groung engineer, and worked exclusivly on Rolls Royce RB211 engines. As i am not scientific, i can only assume the reason the "Buz saw sound" gradually fades, is because the air speed increases and you slowly leave the sound behind. The "Buz saw sound" is created by the fan blades in the front of the engine. It is worth noting, that a jet engine produces its greatest thrust whilst stationary. (hence the terrific acceleration/thrust on the take off run)
I'm going to the Turks and Caicos in a week so excited I love the lift off feeling more than life itself sometimes
The FAA equivalent is EASA. I believe the rules are also the same in Europe and there are a few exceptions to this rule such as 747, and some ultrasonic yet as the Concorde, which can ask the ATC for clearance for more speed to climb more optimally. :)
I love going on planes
Still love the sound of these engines, the downturn then increase again ❤
Love the sound of an aeroplane in the morning and at night. Thumbs up if you agree!
Okay, Dave. For the sake of us blind folks, can you please tell me what kind of plane that was? At first I thought it was a 767-300, but I now wonder if it's not an Airbus a340. I know it's not a DC9, because the jet whine is just over an octive higher in pitch. It's can't be a 757 either, because its whine is 5=1/2 notes higher. I sure do love it, though. I haven't flown since 2008 when I flew to California and back.
It's an Airbus a320
@reedyspeedy12
its the thrust control who reduces the power for holding speed
@vader3435 you can hardly hear the A380 in idle, it's amazing
what airline were you taking?
@reedyspeedy12 Pulling back on power usually means noise abatement. Aircraft was probably flying over a populated area that mandated noise abatement procedures.
Listen, for the last time - everyone - I have no qualms with you listening to the sound of an aircraft's engines. In fact, I'm glad somebody is. There are people employed by Rolls Royce, CFM International etc who actually tune the sounds of these engines - and I'm sure they'd be thrilled to know that you are passionate about the end result!
Lol love it I'm going abroad 1 month and I'm terrified but these calm me down I'm 12 and going to tenerife because it is a short flight but now everyone wants me to go to america
My favorite Passenger Jet engine sounds:
1. Soloviev D30
2. GE GENX and Pratt and Whitney JT8D tied
3. Rolls Royce RB211
4. IAE V2500
5. CFM LEAP 1A and 1B tied
@Axmedkoole Southwest doesn't have A319's
That's correct and true. Southwest flies Boeing 737s. Jetblue flies A 320s and a few A 321s.
do you get the roller coaster feeling? :) i haven't been on a plane since kindergarden lol
@reedyspeedy12 Pulling back on the power for noise abatement. Aircraft was problably flying over a populated area that required noise reduction from aircrafts flying overhead.
I get such a rush when those jets get started and the plane speeds down the runway! Yaaaas!
what airline was it?
@reedyspeedy12 planes have to remain at at speed of 250 knots or below until the have reached 10,000 ft. so thats the sound of the pilot slowing the plane down a little.
Diesen Sound kenne ich vom Flug von Deutschland nach England un d zurück. Hat was für sich, wenn man überlegt was da an Gewicht bewegt wird.
What airline is this? Thomas Cook
@reedyspeedy12 it is switching from full thrust (takeoff power) to nominal thrust
The engines don't go silent after takeoff as cabin crew I have experience on many types of aircraft it's just the effect the pressure has on your hearing
@Dave1Suspect what kind of plane was tht?
i cant tell
were r u flying 2?
which airline
It's actually to avoid noise disturbance over a certian area
If the plane I get on in July makes that "amazing" engine sound I'd poop myself and have a crisis xD
Totally normal engine sound as the tips of the blades become newarly supersonic
This is airbus. And it is normal sound. There is no any problem
It reminds a little the sound of the DC-10 engines, so it is probably propelled by General Electric Engines as well.
Travelled to London then on to Singapore and Australia!!
@reedyspeedy12 below 10.000 ft the airplane is restrected to fly at 250 knots indicated so the airplane must have reached 250 and redused the engins not to overcome it.
@Dave1Suspect it's because airplanes have to stay under 250 knots under 10,000ft because of safety reasons
Its definitely an Airbus you can tell by the Winglet at the end of the wing, also doesn't sound like a boeing.
@reedyspeedy12 Normally this would be the Flight Management Computer switching the engines from takeoff thrust to climb thrust (reduces wear on the engines and uses slightly less fuel) but in this case, maybe he overrode the FMS because he wanted to climb at a higher vertical speed? Who knows.
may i ask why only airbus engines make the loud buzzing noise, i know all airliners do it but airbus seem more prominant.
Was the takeoff in glasglow
very nice sound!! well don!!!
I might have to get on a plane for the first time soon... I don't know if watching this calms me or just makes my fear worse -_-
and where is that in jamaica
Where were you flying to
***** lol
+TheMasterAssasinater But there's not a runway at her house! :p
@reedyspeedy12 It`s because the plane reach to the cruise altitude and the pilots reduce the power...simple
Egyptair ? Isnt it ?
Sounds normal to me
Same here. Sounds like normal A320 engines for Airbus A320 jets.
@Dave1Suspect Auto throttle is reducing engine power.. And an turbine engine has no gears..
@sharartimunda Battery operated cameras are generally okay. It's more a rule for devices like computers and cell phones.
@kramnodd9 Videos tend to be allot louder then they actually are, Aircraft wise. A Dash 8 is much louder that this on the inside.
@AbanoubCupo No its British Airways, take off from Glasgow.
With engines IAE V2500?
The thing causing the noise is because of the motor and its called humming....it also occurs on some trains....
@uupeli0 it is a British Airways plane.
Yeah I've been on one about 10 times and I'm still scared shitless. This is gonna sound dumb, but the only way that you're gonna get rid of your fear is to go on it. If you're scared of heights too look outside. It's scary and exciting at the same time.
which engine?
for people who are crapping themselves in terror - flying is actually one of the safest modes of transport!! think about it, most people have been in a car crash at some point in our lives yet arent scared 2 drive. one or two out of the millions of flights each year crash and its really big news when it happens because it doesnt happen a lot.
@oldsmobile8894 Its a british airways a319
I when on aer lingus flight 587 its an airbus 321 and it made this noise
Also the toilets weren't working and the engines where reving up and down
@reedyspeedy12 Yeh I noticed that myself, very strange, its like the pilot wanted a bit more power for a few second, not sure tho?
Love it 😍😍
Is that Finnair?
Correct Brittany. That's why you have to hide the camera from the cabin crew.
Are you allowed to turn on your gadgets
What state was this in
Durade-Sandstorm
Glasgow Scotland