It is fan buzz. CFM56-7 engines are high bypass turbofans. When the fan blade tips go supersonic as they do when power rises above 80% (approximately), the shock wave creates the buzz you hear in most turbofan engines. The larger the fan, the deeper the buzz pitch. Smaller turbofans, like the JT3D and JT8D make a high pitch buzz. Larger big heavy engine make something more like a saw sound.
That was by far the best T/O video I have ever seen and if you can try to sit in 2F again on a dusk departure love the combination of the buzz and the runway lights GREAT JOB!!!!!
coronaoverhere The change in engine pitch noise is the engines slowing slightly as the aircraft is either leveling off at whatever altitude chicago center has given them or slowing their ascent as they climb out of chicago airspace. Either way, the pilots have throttled back.
coronaoverhere The change in engine pitch noise is the engines slowing slightly as the aircraft is leveling off at whatever altitude chicago center has given them as they climb out of chicago airspace.
Directly below the winglet is the reason for Chicago's existance.That is the Chicago portage,a short one mile hike from the Chicago River,below the engine,to the Des Plaines River,left of the winglet,coming from the north.Discovered by Joliett and Marquette in 1673.Fort Dearborn, downtown Chicago was built to protect the portage from the British.Des Plaines water enters the Illinois River which connects to the Mississippi,Chicago River water drains to the St Lawrence River..
@coolbluelights It has to do with the turbofan. If you sit behind the wing... You dont get that sound. If you sit in front of the engine, you get that awsome sound!
@mike89128 Chicago river water used to drain into Lake Michigan. The Army Corps of Engineers changed the flow with the lock and the Chicago River now drains into the Illinois.
that must suck to live in those house 0:35 hearing all that engine noise haha and langing to must be sight if u live in those houses so close to the airport
coronaoverhere The change in engine pitch noise is the engines slowing slightly as the aircraft is either leveling off at whatever altitude chicago center has given them or slowing their ascent as they climb out of chicago airspace.
Great video. Love taking off from Midway. You gotta love the sound of those engines.
This so far is the best takeoff you've done brilliant
It is fan buzz. CFM56-7 engines are high bypass turbofans. When the fan blade tips go supersonic as they do when power rises above 80% (approximately), the shock wave creates the buzz you hear in most turbofan engines. The larger the fan, the deeper the buzz pitch. Smaller turbofans, like the JT3D and JT8D make a high pitch buzz. Larger big heavy engine make something more like a saw sound.
That was by far the best T/O video I have ever seen and if you can try to sit in 2F again on a dusk departure love the combination of the buzz and the runway lights GREAT JOB!!!!!
Great engine throttle up sound!
i love how you can clearly hear the engines..
The buzzing sound is the engines spooling up,
coronaoverhere The change in engine pitch noise is the engines slowing slightly as the aircraft is either leveling off at whatever altitude chicago center has given them or slowing their ascent as they climb out of chicago airspace. Either way, the pilots have throttled back.
coronaoverhere The change in engine pitch noise is the engines slowing slightly as the aircraft is leveling off at whatever altitude chicago center has given them as they climb out of chicago airspace.
@b7e7 actually the sound is the turbofan blades spinning faster than the speed of sound so its makes a buzzing sound as a result
Directly below the winglet is the reason for Chicago's existance.That is the Chicago portage,a short one mile hike from the Chicago River,below the engine,to the Des Plaines River,left of the winglet,coming from the north.Discovered by Joliett and Marquette in 1673.Fort Dearborn, downtown Chicago was built to protect the portage from the British.Des Plaines water enters the Illinois River which connects to the Mississippi,Chicago River water drains to the St Lawrence River..
Great video, love the throttling.
@coolbluelights the infamous BUZZSAW! I love it!
Nice view of the Stevenson Expressway.
@coolbluelights it is the beutifull sound of the southwest airlines engines!!!
That sound is the engines!
@coolbluelights that's the engines, they don't all do that and TRUST ME from other experience you will love the noise as im sure most people do :D
@coolbluelights It has to do with the turbofan. If you sit behind the wing... You dont get that sound. If you sit in front of the engine, you get that awsome sound!
ahh i love the noise of those powerfull jet engines!!! :D
@b7e7 It's the most amazing sound ever!
Midway is in such a dangerous area far as urban landscape no room for error
@coolbluelights Its the fan blades braking the speed of sound !
@mike89128 Chicago river water used to drain into Lake Michigan. The Army Corps of Engineers changed the flow with the lock and the Chicago River now drains into the Illinois.
Nice video- perfect sounds
Great video!
Nice quality video. May I ask what seat you were in?
The wingflex whilst taxiing kinda worried me there!! xD
WAOH! that plane was light!
@ThatxStaphyy Yep and I didn't hear that buzzing sound on my flight, it was awesome :D
ok, but I didn't think they'd make that noise, well at least I won't think somethings wrong with my plane today :P I've never flown before!
Ive flown this flight from Midway to San Diego its a long long flight thats for sure XD
@oreoweb6
But the buzzing sound on the 777 is amazing!
@bobjl527 i love that cfm56-7b sound.. amazing!
Nice video.
yup i live in one of them and its cool watching planes leave
@coolbluelights
Take off thrust switching to climb thrust, perfectly normal :)
Like that
@coolbluelights i'm guessing you were a first time flyer?
@gipas21 Thank you for letting me know, that video has been removed.
nice video ^^ i want to fly with southwest too xD
what is that buzzing sound??? do they all do that? it's freaky (I have to do this tomorrow) :O
@southwest1998 I was on the same type plane and it didn't make that noise...
you must fly a lot :)
@b7e7 you are welcome my friend
I think I was in 2F.
b7e7. No I think 1F
did you see me wave high to you.. i was in the sears tower!!!
Runway 31C is the runway of departure.
Are you their frequent flyer?
once your very high in the air the lower the power
i was on that plane 5F
Chicago and Lake Michigan at 2:20
once your very high in the air they lower the power
@b7e7 oGhhhhh!
There is another video wich is the same with this. Very weird mate.
0:42
Well they use the same engines so... -_-
at 2:22
@bobjl527 CFM 7b
watch?v=Lhb0eT9zmWg&feature=feedlik i think they have stolen your video. have a look at this . exactly the same
that must suck to live in those house 0:35 hearing all that engine noise haha and langing to must be sight if u live in those houses so close to the airport
coronaoverhere The change in engine pitch noise is the engines slowing slightly as the aircraft is either leveling off at whatever altitude chicago center has given them or slowing their ascent as they climb out of chicago airspace.