Analysis and Calculation for Sound Transmission Loss of Aircraft Fuselage Interior Panel
Abstract— Combining acoustic theory of single wall and sandwich panel, the paper provided an analysis
method to calculate sound transmission loss of typical aircraft fuselage interior panel. According to sound
transmission loss equations, we defined the real parameters of interior panel and put them into calculation
process, and then we got the result in flight and ground conditions. With comparing the data from calculation
and measurement, we find that the value and trending could be marched well in special frequency range and
there are drops at resonance, coincidence and dilatation frequencies of sandwich panel, and level of
transmission loss is rising in flight condition.
Index Terms— sound transmission loss, Sandwich panel, Fuselage interior panel
Han Feng, Xu Junwei, Feng Zixin
Senior Engineer, Shanghai Aircraft Research and Design Institute, Research on aeroacoustic and aircraft acoustic design and noise & vibration control, CHINA
Cite: Han Feng, Xu Junwei, Feng Zixin, "Analysis and Calculation for Sound Transmission Loss of Aircraft Fuselage Interior Panel," Proceedings of 2019 the 9th International Workshop on Computer Science and Engineering, pp. 983-989, Hong Kong, 15-17 June, 2019.