The paper presents recent work to include community-noise considerations based on costs in a MDOCD
(Multi-Disciplinary Optimization for Conceptual Design) framework, for the design of New Large
Aircraft (NLA) for civil aviation. The paper presents an extension of the formulation used in the code
MAGIC (Multidisciplinary Analysis and desiGn of Innovative Configurations), developed by the authors
and their collaborators, which comprises models for structures, aerodynamics, aeroelasticity, flight mechanics,
propulsion, aeroacoustics and life-cycle costs. The community noise is treated here as a cost and
included in the objective. The cost of noise is treated as a parameter, since its knowledge is not available
in the conceptual design phase, depending a lot upon government regulation and community perception.
The paper includes applications to the optimization of both standards and innovative configurations. The
latter is represented by a box-wing configuration (Prantl-Plane) proposed by Frediani, which is particularly
interesting because of the greatly reduced induced drag, causing a reduction of the power required,
and hence of the community noise.