Inlet shape effects on the far-field sound of a model fan

3rd AIAA/CEAS Aeroacoustics Conference

Volumn , Issue , 1997, Pages

  Clar, L R ^a   Thomas, R H ^b   Dougherty, R P ^c   Farassat, F ^a   Gerhold, C H ^a  

^a NASA LANGLEY RESEARCH CENTER   (United States)

^b VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY   (United States)

^c BOEING COMPANY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC NOISE MEASUREMENT; AEROACOUSTICS; BYPASS RATIO; MICROPHONES; NOISE ABATEMENT; WIND TUNNELS;

BROADBAND NOISE; DIRECTIVITY PLOTS; DUCTED PROPELLER; FAR-FIELD SOUND; NOISE REDUCTION METHODS; RADIATED NOISE; ULTRA-HIGH-BYPASS RATIO; WIND TUNNEL TESTS;

ACOUSTIC NOISE;

EID: 84860056446     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.1997-1589     Document Type: Conference Paper

References (13)

1. Abbott, J. M., and Dietrich, D. A., "Aerodynamic and Directional Acoustic Performance of a Scoop Inlet, " NASA TP 1028, September 1977.
2. Abbott, J. M., "Aeroacoustic Performance of a Scoop Inlet, " NASA TM 73725, October 1977.
3. Silcox, R. J., "Geometry and Static Flow Effects on Acoustic Radiation from Ducts, " AIAA Journal. Vol. 22, No. 8, August 1984, pp. 1087-1093.
4. Peake, N., "A Theoretical Investigation of the Noise Radiation from a Scarfed Intake, " CEAS/AIAA Paper 95-101, June 1995.
5. Hodges, R. M., Gerhold, C. H., Balster, D., and Thomas, R. H., "Acoustic Testing of Very High Bypass Ratio Turbofans Using Turbine Powered Scale Models, " AIAA Paper 94-2552, presented at 18th AIAA Aerospace Ground Testing Conference, June 20-23, 1994.
6. Thomas, R. H., Gerhold, C. H., Farassat, F., Santa Maria, O. L., Nuckolls, W. E., and DeVilbiss, D. W., "Far Field Noise of the 12 Inch Advanced Ducted Propeller Simulator, " AIAA Paper 95-0722, January 1995.
7. Gentry, G. L., Quinto, P. P., Gatlin, G. M., and Applin, Z. T., "The Langley 14-by 22-Foot Subsonic Tunnel: Description, Flow Characteristics, and Guide for User, " NASA TP 3008, 1990.
8. Preisser, J. S., Schoenster, J. A., Golub, R. A., Horne, C., "Turbofan Engine Blade Pressure and Acoustic Radiation at Simulated Forward speed, " Journal of Aircraft. Vol. 20, No. 4, pp. 289-297, April 1993.
9. Thomas, R. H., Farassat, P., Clark, L. R., and Gerhold, C. H., "Azimuthal Patterns of the Radiated Sound Field from a Turbofan Model, " AIAA Paper 97-1588, presented at the 3rd AIAA/CEAS Aeroacoustics Conference, May 12-14, 1997.
10. Woodward, R. P., Bock, L. A., Heidelberg, L. J., and Hall, D. G., "Model Ducted Propulsor Noise Characteristics at Takeoff Conditions, " Journal of Aircraft. Vol. 31, No. 5, Sept-Oct., 1994.
11. Dougherty, R. P., "Nacelle Acoustic Deisgn by Ray Tracing in Three Dimensions, " AIAA Paper 96-1773, 1996.
12. Meyer, W. L. and Zinn, B. T., "A Parametric Study of the Effect of Inlet Lip Shape Upon the Radiated Sound Field, " AIAA Paper No. 84-0498, 22nd Aerospace Sciences Meeting, Reno, NV.
13. Baumeister, K. J., "Utilizing Numerical Techniques in Turbonfan Inlet Acoustic Suppressor Design, " NASA Technical Memorandum 82994, 1982.