S-92 Cabin Acoustic Design Concept

This paper discusses a lightweight, efficient, highly functional, maintenance-friendly, low-noise cabin interior system developed for next-generation passenger comfort. The essential principle, from initial concept to final design, focused on optimizing acoustic performance, weight, access, maintenance, installation time, and interchangeable components. Merging these attributes into one comprehensive cabin design makes this a unique configuration providing significant customer satisfaction. Reducing the customers’ direct operating cost was a guiding design feature. Another achievement was the ability to change out any panel or gain access to any space behind the interior in a very short time. Also discussed is how this panel system builds from an isolated frame structure toward individual, independent cabin panels having no direct contact or attachment to the airframe beams or skin structure. The final design contains a counter-intuitive independent frame structure that contributes no first-order acoustic benefit, yet exploits the panels’ full acoustic properties, significantly reduces access time and enhances interchangeability.