Researchers from North Carolina State University and MIT have collaborated to create a special rubber membrane that will help reduce noise inside airplanes. While the honeycomb-structure paneling used in airplane cabins and wings does a great job keeping planes' weight down without compromising on strength, they don't do a great job blocking noise.
This rubber membrane is made from rubber that's just a quarter of a millimeter thick and is adhered to one side of a piece of the honeycomb paneling. Once it place, it acts much like the skin of a drum, causing incoming sound waves to bounce back instead of infiltrating the cabin.
This simple solution is a work of genius because it is inexpensive and will improve passenger comfort without hampering airplanes in any way.
Noise-Canceling Airplane Lining
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