A computational study of BVI noise reduction using active twist control

Annual Forum Proceedings - AHS International

Volumn 1, Issue , 2010, Pages 660-668

  Fogarty, David ^a   Wilbur, Matthew ^b   Sekula, Martin ^b  

^a NATIONAL INSTITUTE OF AEROSPACE   (United States)

^b NASA LANGLEY RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC ANALYSIS; ACTIVE TWIST ROTOR; AEROELASTIC BEHAVIOR; BLADE-VORTEX INTERACTION NOISE; COMPUTATIONAL STUDIES; FLIGHT CONDITIONS; ROTOR DIAMETER; ROTORCRAFT AERODYNAMICS;

AEROELASTICITY; HELICOPTER ROTORS; NOISE ABATEMENT; SHEAR FLOW; TURBOMACHINE BLADES;

ACOUSTIC NOISE;

EID: 84884374552     PISSN: 15522938     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (13)

1. Lim J. W., and Yu, Y. H., "Calculation of Rotor Blade-Vortex Interaction Airloads Using a Multiple-Trailer Free-Wake Model", Journal of Aircraft, Vol. 40 (6), November-December 2003.
2. Brooks, T. F., and Booth, E. R., Jr., "The Effects of Higher Harmonic Control on Blade-Vortex Interaction Noise and Vibration", Journal of the American Helicopter Society, Vol. 38 (3), July 1993.
3. Patt, D., Liu, L., and Friedmann, P. P., "Simultaneous Vibration and Noise Reduction in Rotorcraft Using Aeroelastic Simulation", American Helicopter Society 60th Annual Forum, Baltimore, MD, June 7-10, 2004.
4. Booth, E. R. and Wilbur, M. L., "Acoustic Aspects of Active-Twist Rotor Control," Journal of the American Helicopter Society, January 2004, pp. 3-10.
5. Sekula, M. K., Wilbur, M. L., and Yeager, W. T., Jr., "Aerodynamic Design Study of an Advanced Active Twist Rotor," Proceedings of the American Helicopter Society 4th Decennial Specialist's Conference on Aeromechanics, San Francisco, California, January 21-23, 2004.
6. Sekula, M. K., Wilbur, M. L., and Yeager, W. T., Jr., "Structural Design Study of an Advanced Active Twist Rotor," Proceedings of the American Helicopter Society 61st Annual Forum, Grapevine, TX, June 1-3, 2005.
7. Wilbur, M. L., and Sekula, M. K. "The Effect of Tip Geometry on Active-Twist Rotor Response." Proceedings of the American Helicopter Society 61st Annual Forum, Grapevine, TX, June 1-3, 2005.
8. Johnson, W., CAMRAD II, Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics, Johnson Aeronautics, Palo Alto, California, 1994.
9. Wilkie, W. K., Wilbur, M. L., and Mirick, P. H., "Aeroelastic Analysis of The NASA/Army/MIT Active Twist Rotor", Proceedings of the American Helicopter Society 55th Annual Forum, Montreal, Canada, May 25-27, 1999.
10. Hennes, C., Lopes, L., Shirey, J., Erwin, J.: "PSUWOPWOP 3.3 User's Guide", The Pennsylvania State University, June 28, 2007.
11. Widnall, S., "Helicopter noise due to blade-vortex interaction", Journal of the Acoustical Society of America, Vol. 50, pp 354-365.
12. Martin, R. M., and Splettstoesser, W. R., "Acoustic results of the blade-vortex interaction acoustic test of a 40-percent model rotor in the DNW", AHS Specialists Meeting on Aerodynamics and Acoustics, Arlington, TX, U.S.A, 1987.
13. Splettstoesser, W. R., Schultz, K. J., and Martin, R. M., "Rotor blade-vortex interaction impulsive noise source identification and correlation with rotor wake predictions", AIAA Paper 87-2744.