Effects of liner geometry on acoustic impedance

8th AIAA/CEAS Aeroacoustics Conference and Exhibit

Volumn , Issue , 2002, Pages

  Jones, Michael G ^a   Tracy, Maureen B ^a   Watson, Willie R ^a   Parrott, Tony L ^a  

^a NASA LANGLEY RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AEROACOUSTICS; AIRCRAFT ENGINES; HONEYCOMB STRUCTURES; NASA; PERFORATING;

AEROACOUSTIC PROPAGATION; AIRCRAFT ENGINE NACELLES; GRAZING INCIDENCE TUBE; IMPEDANCE EDUCTION; NASA LANGLEY RESEARCH CENTER; NOISE SUPPRESSION; PERFORATED SHEET; QUANTITATIVE ASSESSMENTS;

ACOUSTIC IMPEDANCE;

EID: 85086619313     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.2002-2446     Document Type: Conference Paper

References (13)

1. Watson, W. R., Jones, M. G., and Parrott, T. L., "Validation of an Impedance Eduction Method in Flow," AIAA Journal, Vol. 37, No. 7, 1999, pp. 818-824.
2. Ingard, U., "On The Theory And Design Of Acoustic Resonators," Journal of Acoustical Society of America, Vol. 25, No. 6, 1953, pp. 1037-1061.
3. Rice, E.J., "A Model For The Acoustic Impedance Of A Perforated Plate Liner With Multiple Frequency Excitation." NASA TMX-67950, 1971.
4. Melling, T.H., "The Acoustic Impedance of Perforates at Medium and High Sound Pressure Levels." Journal of Sound and Vibration, Vol. 29, No. 1, 1973, pp. 1-65.
5. Guess, A.W., "Calculation Of Perforated Plate Liner Parameters From Specified Acoustic Resistance And Reactance," Journal of Sound and Vibration, Vol. 40, No. 1, 1975, pp. 119-137.
6. Hersh, A.S., Walker, B., and Bucka, M., "Effect Of Grazing Flow On The Acoustic Impedance Of Helmholtz Resonators Consisting Of Single And Clustered Orifices." AIAA 78-1124, 1978, pp. 1-14.
7. "Aeroacoustics of Flight Vehicles: Theory and Practice - Volume 1: Noise Sources," NASA RP- 1258, edited by H.H. Hubbard, 1991.
8. Parrott, T. L. and Jones, M. G., "Parallelelement Liner Impedances for Improved Absorption of Broadband Sound in Ducts," Noise Control Engineering Journal, 1995, pp. 183-195.
9. Premo, J., "The Application Of A Time-Domain Model To Investigate The Impedance Of Perforate Liners Including The Effects Of Bias Flow," AIAA Paper 99-1876, 1999.
10. Armstrong, D. L., Beckemeyer, R. J. and Olsen, R. F., "Impedance Measurements of Acoustic Duct Liners With Grazing Flow," Paper presented at the 87th Meeting of the Acoustical Society of America, New York, NY, 1974.
11. Jones, M. G. and Stiede, P. E., "Comparison of Methods for Determining Specific Acoustic Impedance," Journal of Acoustical Society of America, Vol. 101, No. 5, 1997, pp. 2694-2704.
12. Myers, M. K., "On the Acoustic Boundary Condition in the Presence Of Flow," Journal Of Sound And Vibration, Vol.'71, No.'3, 1980, pp. 429-434.
13. Heidelberg, L.J., Rice, E.J. and Homyak, L., Experimental Evaluation of a Spinning-Mode Acoustic Treatment Design Concept for Aircraft Inlets, NASA TP-1613, 1980.