Noise Reduction in Propeller Fans Using Porous Blades at Free‐Flow Conditions
作者:
Robert C. Chanaud,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1972)
卷期:
Volume 51,
issue 1A
页码: 15-18
ISSN:0001-4966
年代: 1972
DOI:10.1121/1.1912815
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Experiments were conducted on propeller fan blades at free‐flow conditions to determine the noise reduction associated with the use of rigid porous materials as the blade material in lieu of solid material. The results suggest that significant sound reduction can be achieved with no loss of pumping efficiency when the pitch angle is increased from normal.
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