Acoustic Aspects of Active-Twist Rotor Control

Journal of the American Helicopter Society

Volumn 49, Issue 1, 2004, Pages 3-10

  Booth Jr , Earl R ^a   Wilbur, Matthew L ^a  

^a NASA LANGLEY RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC NOISE MEASUREMENT; ACTUATORS; AMPLITUDE MODULATION; COMPUTER CONTROL; DATA ACQUISITION; DATA REDUCTION; INTERFEROMETRY; NOISE ABATEMENT; STRAIN GAGES; TRANSONIC AERODYNAMICS; VIBRATION CONTROL; WIND TUNNELS;

ACTIVE FIBER COMPOSITES (AFC); ACTIVE-TWIST ROTOR (ATR) SYSTEM; HELICOPTER BLADES;

ROTORS;

EID: 1242329824     PISSN: 00028711     EISSN: None     Source Type: Journal    
DOI: 10.4050/jahs.49.3     Document Type: Article

References (10)

1. Hardin, J. C., and Lamkin, S. L., "Concepts for Reduction of Blade/Vortex Interaction Noise," Journal of Aircraft, Vol. 24, (2), January 1987, pp. 120-125.
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, pp. 45-55.
3. Splettstoesser, W. R., Schultz, K. J., Kube, R., Brooks, T. F., Booth, E. R., Niesl, G., and Streby, O., "A Higher Harmonic Control Test in the DNW to Reduce Impulsive BVI Noise," Journal of the American Helicopter Society, Vol. 39, (4), October 1994, pp. 3-13.
4. Kube, R., Splettstoesser, W. R., Wagner, W., Seelhorst, U., Yu, Y. H., Tung, C., Beaumier, P., Prieur, J., Rahier, G., Spiegel, P., Boutier, A., Brooks, T. F., Burley, C. L., Boyd, D. D., Mercker, E., and Pengel, K., "HHC Aeroacoustic Rotor Tests in the German Dutch Wind Tunnel: Improving Physical Understanding and Prediction Codes," American Helicopter Society 52nd Annual Forum, Washington, D.C., June 4-6, 1996.
5. Nguyen, K., Betzina, M., and Kitaplioglu, C., "Full-Scale Demon-stration of Higher Harmonic Control for Noise and Vibration Reduction on the XV-15 Rotor," Journal of the American Helicopter Society, Vol. 46, (3), July 2001, pp. 182-191.
6. Swanson, S. M., Jacklin, S. A., Blaas, A., Kube, R., and Niesl, G., "Individual Blade Control Effects on Blade- Vortex Interaction," American Helicopter Society 50th Annual Forum Proceedings, Washington, D.C., May 1994, pp. 81-101.
7. Marcolini, M. A., Booth, E. R., Tadghighi, H., Hassan, A. A., Smith, C. D., and Becker, L. E., "Control of BVI Noise using an Active Trailing Edge Flap," NASA Ames Research Center and American Helicopter Society Vertical Lift Aircraft Design Conference, San Francisco, CA, January 18-20, 1995.
8. Wilbur, M. L., Mirick, P. H., Yeager, W. T., Jr., Langsten, C. W., Cesnik, C. E. S., and Shin, S., "Vibratory Loads Reduction Testing of the NASA/Army/MIT Active Twist Rotor," American Helicopter Society 57th Annual Forum Proceedings, Washington D.C., May 9-11, 2001, pp. 1050-1068.
9. Fleming, G. A., Soto, H. L., and South, B. W., "Projection Moiré Interferometry for Rotorcraft Applications: Deformation Measurements of Active Twist Rotor Blades," American Helicopter Society 58th Forum Proceedings, Montréal, Canada, June 11-13, 2002.
10. Wilbur, Matthew L., Yeager, William T., Jr., and Sekula, Martin K., "Further Examination of the Vibratory Loads Reduction Results from the NASA/Army/MIT Active Twist Rotor Test," American Helicopter Society 58th Annual Forum Proceedings, Montréal, Canada, June 11-13, 2002.