Technical Memorandum of National Aerospace Laboratory
巻
603
ページ
40
発行年
1989-02
抄録（英）
Parametric studies of acoustic duct attenuation of perforated-plate-on-honey-comb absorbers were conducted using a flow duct facility with duct airflow Mach number from -0.6 to 0.6. Open area ratio of face sheets from 0.01 to 0.09 and core depth from 10 to 40 mm were tested with constant duct size of 200 mm. The influence of these parameters as well as duct airflow Mach number was discussed.
多孔板ハネカム吸音ライナの減音特性
naltm00603.pdf
(2.44MB)
