Buzz-saw noise, most annoying noise component generated by turbofan engines, can be suppresses by installing porous surface on duct wall directly above engine fan-blade tip. Porous surface and its housing would reduce shock-wave reflection from wall and thus suppress noise.
Suppressing buzz-saw noise in jet engines
NASA Tech Briefs ; 5 , 2
1980-09-01
Miscellaneous
No indication
English
Experimental Investigation of the Oil Pressure Regulator Buzz Noise on Diesel Engines
SAE Technical Papers | 2013
|Experimental Investigation of the Oil Pressure Regulator Buzz Noise on Diesel Engines
British Library Conference Proceedings | 2013
|Online Contents | 2013
|Prevention of buzz-saw noise by acoustic lining
Tema Archive | 1995
|Prevention of Buzz-saw Noise by Acoustic Lining
British Library Conference Proceedings | 1995
|