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People who have traveled by airplane should know that it is almost impossible to isolate the noise and vibration generated by the engine in the cabin. For infants and young children, this environment is clearly not enough humane. The good news is that researchers at North Carolina State University and the Massachusetts Institute of Technology have developed a new rubber membrane material. The relevant articles of this research have been published in the Applied Physics Letters published last week.
It is reported that by covering a honeycomb structure with a 0.25 mm thick (approximately 0.01 inch) thin film of rubber, the device can very effectively eliminate low-frequency noise (1000 times or more), which is particularly effective for passenger aircraft with a large engine.
However, airlines that are pursuing fuel economy may not be able to immediately deploy this new technology because the biggest problem with the current material is that it will increase aircraft weight by 6%.
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