In a commercial planes, these silver things are the reason why it’s virtually silent in the cabin even though it’s the opposite outside the cabin.
The insulation that goes on in between the cabin panel you see and the metal skin not only keeps warmth, but also attenuate outside noise, allowing you to sit in the cabin worrying about the crying baby a few rows down from you instead of being deafened by the roar of the jet engine & the airflow outside.
You mean they are louder flying over your house than being inside? How low are planes flying over you?
The cabins are well insulated and the sound of the engines is muffled inside but it’s still rather loud.
In a commercial planes, these silver things are the reason why it’s virtually silent in the cabin even though it’s the opposite outside the cabin.
The insulation that goes on in between the cabin panel you see and the metal skin not only keeps warmth, but also attenuate outside noise, allowing you to sit in the cabin worrying about the crying baby a few rows down from you instead of being deafened by the roar of the jet engine & the airflow outside.