Aero Acoustic source description for prediction of structural loads

Purpose and goal

The project has delivered better knowledge and understanding in aeroacoustic source mechanisms, which has been attained through detailed studies, new analyses of previous measurement data and also through detailed studies of relevant model problems. Additionally, basic analysis methodology for strut noise has been derived, which has given an increased understanding of how this can be prevented.

Results and expected effects

For the academy the project has contributed in strengthening the research environment and the possibility to employ younger scientists, which will lead to increased competence within the area. For Creo Dynamics the project gives the possibility to develop and strengthen its aeroacoustic competence, which results in higher competitiveness and enables growth. Creo Dynamics also sees the possibility of developing this competence to cover a wider field, thus strengthening Creo Dynamics further on the Swedish and European markets as specialists.

Approach and implementation

In WP1, measurements of interior sound, exterior sound pressure and vibration from in-flight tests have been analyzed. Various parameters believed to influence the acoustic sources were investigated in order to characterize the sources. Based on these results various solution methodologies have been proposed in WP2. These methodologies have than been developed and used in WP3 for further analysis of the source. In parallel, workshops have also been set up with Saab and Lunds Tekniska Högskola.