Ahh! Thanks for explaining that. I've always hated that noise but now that I know what causes it I can't wait to hear it :) I'm doing the dfw nrt run in feb.
@xtole Ahh. That noise is often called as the "buzzsaw noise." It's actually a series of shock waves created by the tips of the engine fan blades as they spin fast enough to exceed the sound barrier. The reason you don't hear them at cruise is the plane speeds up and the engine inlet "swallows" the shock so it can't travel forward out of the inlet and be heard from the cabin. The buzzsaw noise is common across most modern aircraft, since that's typically the most efficient fan speed.
@xtole Not sure exactly what you're referring to, but the cabin recirculation fans for the heating/cooling automatically wind down and turn off once airborne. This makes it easier to hear the engines and other sounds going on during takeoff.
@xtole Anytime! Unfortunately, it's almost impossible to hear the noise unless you're in front of the engine. Have fun on the trip...all us airplane geeks love that angry sound, since it's the sound of power. :)
That grrrr noise at 1:52 from the engines. I'm sure that's just the power of the engine, but I've noticed some planes have that sound at take off and gets quiet above 10k feet. Some other planes dont make that noise and it's quiet.
@wlombardi Although I think the new DL scheme is very smart and looks great on just about all of their aircraft, I have a special place in my heart for the AA livery, too. I just hope there's a way to make the new 787s and Airbuses look nice (bare metal look or otherwise) when they start getting delivered...
![[4K] - Clear & Cloudless Dallas Takeoff - American - Boeing 777-200/ER - DFW - N784AN - SCS 1162](http://i.ytimg.com/vi/KoUeSIhlK2c/mqdefault.jpg)
![American Airlines Boeing 777-200ER [N775AN] push back, taxi, and takeoff from DFW](/img/1.gif)
I like it - the old one will always be an icon, though! Yes, AA has PTVs on all 777s.
Awesome video and I'm excited to go there this winter on a AA 777 DFW to NRT!!!!!!!!!!!
Great video! The AA 772 is the best looking triple 7 out there!.
Ahh! Thanks for explaining that. I've always hated that noise but now that I know what causes it I can't wait to hear it :) I'm doing the dfw nrt run in feb.
@xtole Ahh. That noise is often called as the "buzzsaw noise." It's actually a series of shock waves created by the tips of the engine fan blades as they spin fast enough to exceed the sound barrier. The reason you don't hear them at cruise is the plane speeds up and the engine inlet "swallows" the shock so it can't travel forward out of the inlet and be heard from the cabin.
The buzzsaw noise is common across most modern aircraft, since that's typically the most efficient fan speed.
luv those rolls royce trent engines-such power.
I think once Aeroflot gets their 777s that that'll be one of the best 777 liveries
I think the GE engines make the 777 look so awesome!
@xtole Not sure exactly what you're referring to, but the cabin recirculation fans for the heating/cooling automatically wind down and turn off once airborne. This makes it easier to hear the engines and other sounds going on during takeoff.
Nice video! Like it!
@xtole Anytime! Unfortunately, it's almost impossible to hear the noise unless you're in front of the engine. Have fun on the trip...all us airplane geeks love that angry sound, since it's the sound of power. :)
That grrrr noise at 1:52 from the engines. I'm sure that's just the power of the engine, but I've noticed some planes have that sound at take off and gets quiet above 10k feet. Some other planes dont make that noise and it's quiet.
@edwardsweeney24 I loved it - great food and service. The takeoff sound is much better up front, too :)
What causes that whirring sound on takeoff? Always love to watch those "heavies" in action! Great job!
@zachmatt3 Yep - usually around 13 hours, depending on winds. It's a good flight to snag first class!
@wlombardi Although I think the new DL scheme is very smart and looks great on just about all of their aircraft, I have a special place in my heart for the AA livery, too. I just hope there's a way to make the new 787s and Airbuses look nice (bare metal look or otherwise) when they start getting delivered...
Cool.....
Notice at 3:27, noise is gone... All quiet. Stark contrast between 1:52
Awsome video, how was first class?
Must have been a very long flight...I think it's over 6,000 miles from DFW to Narita.
What causes that noise as soon as the plane off the ground?
@ airbus320dfw bare metal with a red, white and blue cheat line vs. a boring white paint job? Never!
Thats not a nw paint scheme DL has had if or quite awhile.
Airflow at the tip of the fan-blades momentarily going supersonic, while interacting with the intake. Not much different than the concept of thunder.