Analysis of Vibroacoustics of the Superjet 100 Aircraft

Abstract

The problem of vibroacoustics of civil aircraft is considered, which includes a set of tasks conditionally divided into directions - cabin noise, vibrations of the structure and acoustic strength. In these areas, complex computational and experimental studies are carried out during the design of the aircraft and its fine-tuning. Using the example of the Superjet 100 aircraft, some aspects of experimental vibroacoustics are considered. The spectrum of pressure fluctuation fields on the surface of the aircraft fuselage are presented. Ranking by intensity of the main noise sources in the cabin was performed (for experimental aircraft without interior). The influence of the interior on the noise levels in the cabin is considered. An example of visualization of the sound field in the cabin using spherical beamforming technology is shown.