Active resonators for control of multiple spinning modes in an axial flow fan inlet

5th AIAA/CEAS Aeroacoustics Conference and Exhibit

Volumn , Issue , 1999, Pages 339-348

  Walker, B E ^a   Hersh, A S ^a   Heidelberg, L J ^b   Sutliff, D L ^b   Spencer, M E ^c  

^a Outcomes Insights   (United States)

^b NASA GLENN RESEARCH CENTER   (United States)

^c Signal Processing Solutions   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC FIELDS; ACOUSTIC VARIABLES CONTROL; AEROACOUSTICS; AXIAL FLOW; BANDWIDTH; NASA; TURBOFAN ENGINES;

ACOUSTIC BANDWIDTH; ACTIVE RESONATORS; AXIAL FLOW FAN; EFFECTIVE ABSORPTION; HELMHOLTZ RESONATORS; RESEARCH PROGRAMS; SPINNING MODES; TURBO-FAN ENGINE NOISE;

RESONATORS;

EID: 84983112876     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.1999-1853     Document Type: Conference Paper

References (7)

1. Hersh, A.S. and Tso, J. “Extended Frequency Range Helmholtz Resonators,” U.S. Patent 5,119,427, June 1992
2. Swinbanks, M. A."Active Control of Sound Waves, U. S. Patent 4, 044, 203, Aug. 23, 1977.
3. Morgan, D.R. “Analysis of multiple correlation cancellation loop with a filter in the auxiliary path,” IEEE Trans, on Acoustics, Speech and Signal Processing, vol ASSP-28, pp. 454-467, Aug. 1980
4. Kuo, S.M. and Vijayan, D. “A secondary path modeling technique for active noise control systems,” IEEE Trans, on Speech and Audio Processing, vol 5, no, 4 pp. 374-377, July 1997
5. Heidelberg, L.J., Hall, D.G., Bridges, J.E. and Nallasamy, M., "A Unique Ducted Fan Test Bed for Active Noise Control and Aeroacoustics Research," AIAA-96-1740, NASA 107213, May, 1996
6. Tyler, J.M. and Sofrin, R.G., “Axial Flow Compressor Noise Studies,” Soc. Auto. Engr. Trans., Vol. 70, 309-332, 1962
7. NASA Lewis Research Center “Quieting the Skies: Engine Noise Reduction for Subsonic Aircraft,” 1997. (Contact Larry Viterna, MS 3-7, NASA Lewis Research Center, 21000 Brookpark Road, Cleveland, OH 44135, cto@lerc.nasa.gov)