摘要
针对某飞机用通风冷却风扇降噪,通过测量、分析和计算,设计一种复合式消声器。该消声器由微穿孔板吸声结构和阻式吸声材料组合而成。实验表明,该消声器能在较宽的频带上有效地消减风扇运行中所产生的进排气噪声,距离风扇1m处可使噪声平均降低12dB(A)。
In the paper, a compound silencer combined microperforated structure and sound absorbing materials for attenuating the fan noise is designed through the measurement, the analysis and the calculation. Experimental results show that the silencer can efficiently attenuate the noise in a wide frequency band and reduce 12dB around the fan in the lm scope.
出处
《噪声与振动控制》
CSCD
北大核心
2008年第3期124-126,共3页
Noise and Vibration Control
关键词
声学
风扇
微穿孔板
消声器
噪声
acoustics
fan
micro perforation plate
silencer
noise
