Modern high-bypass jets of today (such as that A321NEO) but even the A320CEO along with the 767, A330, and 777 all have that thunderous rumble along with a howling whine. I know I’ve mentioned this before, but here’s something I haven’t discussed. It’s that you might’ve noticed that movies and TV shows depict airplanes with outdated sounds. They use the noise from early low-bypass jetliners such as the DC-8, DC-9, 707, and 727 which is typically hissing roar along with a screeching whine. The only similarity is that both old and new jets have an aerodynamic whooshing sound. Many cartoons depict rockets as sounding like modern jets, that powerful thundering sound. That’s why I was so surprised when I heard jets like Southwest’s 737s takeoff from up close, I thought that they sounded like rockets and not jets; well… not the jets as portrayed by the media and popular culture.
Higher BPR engines are supposed to have quieter exhausts. Depends if its a mixed or unmixed one. One relation showed that jet noise is approximately propionate to exit jet velocity to the 7th power. But high BPR engines have more fan noise probably due to higher tip speeds and blade pass frequencies.
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Modern high-bypass jets of today (such as that A321NEO) but even the A320CEO along with the 767, A330, and 777 all have that thunderous rumble along with a howling whine. I know I’ve mentioned this before, but here’s something I haven’t discussed. It’s that you might’ve noticed that movies and TV shows depict airplanes with outdated sounds. They use the noise from early low-bypass jetliners such as the DC-8, DC-9, 707, and 727 which is typically hissing roar along with a screeching whine. The only similarity is that both old and new jets have an aerodynamic whooshing sound. Many cartoons depict rockets as sounding like modern jets, that powerful thundering sound. That’s why I was so surprised when I heard jets like Southwest’s 737s takeoff from up close, I thought that they sounded like rockets and not jets; well… not the jets as portrayed by the media and popular culture.
Higher BPR engines are supposed to have quieter exhausts. Depends if its a mixed or unmixed one. One relation showed that jet noise is approximately propionate to exit jet velocity to the 7th power. But high BPR engines have more fan noise probably due to higher tip speeds and blade pass frequencies.
@@Joshuamd80 Yes, I know all about it.
How so loud?
It was at 1700 feet. The Neos tend to be louder.
Yeah the NEOs are loud, but louder than what?
@@ChrisZoomER To me they're noisier than any other plane. A330 might be worse though lol.