Foam-metal liner attenuation of low-speed fan noise

14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)

Volumn , Issue , 2008, Pages

  Sutliff, Daniel L ^a,c   Jones, Michael G ^b,d  

^a NASA GLENN RESEARCH CENTER   (United States)

^b NASA LANGLEY RESEARCH CENTER   (United States)

^c Acoustics Branch   (United States)

^d Structural Acoustics Branch   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ATTENUATION LEVELS; CLOSE PROXIMITY; ENGINE COMPONENTS; ENGINE PERFORMANCE; FAN NOISE; LOW SPEED; METAL LINER; NEAR FIELDS; NOISE GENERATION MECHANISMS; NOISE REDUCTIONS;

MACHINE DESIGN; METALS;

AEROACOUSTICS;

EID: 78249265715     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (8)

1. Huff, D.L., "Noise Reduction Technologies for Turbofan Engines", Proceedings of Inter-Noise 2006, IN06 732, December 2006.
2. Smith, C.D. and Parrott, T.L., "Comparison Of Three Methods For Measuring Acoustic Properties Of Bulk Materials," Journal of Acoustical Society of America, Vol. 74, No. 5, 1983, pp. 1577-1582.
3. Chung, J.Y. and Blaser, D.A., "Transfer function method of measuring in-duct acoustic properties: I. Theory," Journal of Acoustical Society of America, Vol. 68, 1980, pp. 907-921.
4. Jones, M.G. and Parrott, T.L., "Evaluation of a multi-point method for determining acoustic impedance," Journal of Mechanical Systems and Signal Processing, Vol. 3, No. 1, 1989, pp. 15-35.
5. Lowe, R.A., Lauer, J.T., McAllister, J., and Sutliff, D.L., "The Advanced Noise Control Fan", AIAA-2006-3150, NASA/TM-2006-214368.
6. Cooper, B.A., "A Large Hemi-Anechoic Chamber Enclosure for Community-Compatible Aeroacoustic Testing of Aircraft Propulsion Systems", Journal of the Institute of Noise Control Engineering of the USA, Jan/Feb 1994.
7. Burdisso, R.A., and Ng, W.F., "Fan Noise Control Using Herschel-Quincke Resonators", NASA CR-2003-212097.
8. De la Riva, D.H., Burdisso, R.A., and Ng, W.F., "Aft Fan Noise Control Using Herschel/Quincke-Liner Systems", AIAA 2005-307