The structural influence of the cabin floor on the transmission of low frequency propeller noise into aircraft interiors has been examined using a simplified analytical model. The response amplitudes and distributions of shell displacement and internal acoustic pressure are examined for various frequencies and floor configurations. In general, at lower frequencies the floor exerts little structural influence on the transmission of acoustic energy to the interior. However, as the frequency nears half the cylinder ring frequency the floor can be seen to significantly alter the internal pressure distributions and response.
Structural influence of cabin floor on sound transmission into propeller aircraft - Analytical investigations
1986-07-01
Conference paper
No indication
English
Influence of propeller synchrophasing on aircraft cabin noise
Engineering Index Backfile | 1955
|Influence of propeller synchrophasing on aircraft cabin noise
Engineering Index Backfile | 1956
|