Vibroacoustic Evaluation and Optimization of Aircraft Cabin Concepts - A Systems Engineering Framework

Abstract

Concepts such as model based systems engineering (MBSE) and multi-disciplinary design optimization (MDO) are increasingly used for the design of complex products. In order to describe new innovative cabin designs and its interrelations with other aircraft components an MBSE approach is motivated. Furthermore, MDO methods enable a holistic design optimization on the foundation of this model-based description. In order to facilitate an efficient exchange of data and parameters between numerical tools of different disciplines, a central data model is needed. Such a central data model is proposed in the present study for the assessment of vibro and cabin acoustics. This MBSE approach enables the integration of cabin comfort as a key driver in the design phase. With the incorporation of additional scientific disciplines in aeronautics, the MDO benefits the overall cabin design. An approach for MDO with special consideration of vibroacoustics in an MBSE framework is presented. The choice of a suitable requirement model is particularly emphasized, which is needed to yield reasonable results for the customer. The overall aim of the methodology is an enhancement of the processes and the development of new tools which facilitate the network of different partners engaged in the vibroacoustic evaluation of cabin concepts.