Having just been patented earlier in the month, ITT is presenting its new noise control technology at the show.
Its customised dampening solutions are the result of 10 years of studying cabin noise levels, according to ITT's director of product management control technologies, Jeff Weisbeck.
He explains that the company aims to achieve airline cabin noise levels of 50 A-weighted decibels (dBA), equivalent to a home living room through de-coupling the skin of the aircraft from the interior.
A reduction in cabin noise takes a system approach according to Weisbeck, who says ITT has been understanding the high-frequency performance of elastomers as part of the isolator it uses in this system.
The isolator is an elastomeric device that attaches the cabin interior to the frame of the aircraft and ITT's isolators are in place on the Boeing 787.
Weisback says "different rubber compounds behave very differently", and an elastomer optimised for noise reduction could help reduce cabin noise by 10-15 dBA over one that wasn't.
To demonstrate how differently rubber compounds can behave, Weisback starts slowly pulling so it stretches, but then pulls it quickly at which point it breaks in half.
Source: Flight Daily News
