The propagation of caustics in rotorcraft blade-vortex interaction noise

2nd AIAA/CEAS Aeroacoustics Conference

Volumn , Issue , 1996, Pages

  Sim, Ben Wel C ^a   George, Albert R ^a  

^a School of Operations Research and Industrial Engineering   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC NOISE; ACOUSTIC NOISE MEASUREMENT; AERODYNAMICS; HELICOPTERS; MACH NUMBER; TURBOMACHINE BLADES; VORTEX FLOW; WAVEFRONTS; WIND TUNNELS;

BLADE-VORTEX INTERACTION NOISE; FAR FIELD; FAR-FIELD DIRECTIVITY; HELICOPTER BLADE-VORTEX INTERACTIONS; HIGH NOISE; INVERSE SQUARE LAW; NEAR FIELDS; RADIATED NOISE;

AEROACOUSTICS;

EID: 84977151277     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.1996-1737     Document Type: Conference Paper

References (15)

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2. Boxwell, D. A. and Schmitz, F. H., “Full-Scale Measurements of Blade-Vortex Interaction Noise,” Journal of the American Helicopter Society, Vol. 27, No. 4, pp. 11-27,1982.
3. Martin, R. M., Splettstoesser, W. R., Elliott, J. W. and Schultz, K.-J., “Advancing-Side Directivity and Retreating-Side Interactions of Model Rotor Blade-Vortex Interaction Noise,” NASA TP-2784, May 1988.
4. Splettstoesser, W. R., Schultz, K.-J., Boxwell, D. A. and Schmitz, F. H., “Helicopter Model Rotor-Blade Vortex Interaction Impulsive Noise: Scalability and Parametric Variations,” NASA TM-86007, December 1984.
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7. Sim, B. W.-C. and George, A. R., “Blade-Vortex Interaction Noise Studies Using Trace Mach Number,” American Helicopter Society Aeromechanics Specialist Conference, Fairfield County, Connecticut, October 1995.
8. Sim, B. W.-C. and George, A. R., “Development of a Rotor Aerodynamic Load Prediction Scheme for Blade-Vortex Interaction Noise Study,” American Helicopter Society 51st Annual National Forum, Forth Worth, Texas, May 1995.
9. Widnall, S., “Helicopter Noise due to Blade-Vortex Interaction,” The Journal of the Acoustical Society of America, Vol. 50, No. 1, 354-365, 1971.
10. Ringler, T. D., George, A. R. and Steele, J. B., “The Study of Blade-Vortex Interaction Sound Generation and Directionality,” American Helicopter Society’s International Techincal Specialist Meeting, Valley Forge, Pennsylvania, October 1991.
11. Sim B. W.-C. and George, A. R., “A Study of Propfan Noise Propagation,” AIAA Paper No. 93-0602, 1993.
12. Blokhintzev, D. I., “The Propagation of Sound in an Inhomogeneous and Moving Medium, I,” The Journal of the Acoustical Society of America, Vol. 18,322-328,1946.
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