Numerical investigation of integral twist actuation for bvi noise reduction

Annual Forum Proceedings - AHS International

Volumn II, Issue , 2006, Pages 918-933

  Thepvongs, Smith ^a   Cesnik, Carlos E S ^a   Voutsinas, Spyros G ^b  

^a The Department of Civil and Environmental Engineering   (United States)

^b NATIONAL TECHNICAL UNIVERSITY OF ATHENS   (Greece)

Author keywords

[No Author keywords available]

Indexed keywords

BLADE VORTEX INTERACTION; COMBINED EFFECT; INTERACTION PARAMETERS; MISS-DISTANCE; NOISE CONDITIONS; NUMERICAL INVESTIGATIONS; ROTOR DISKS;

NOISE ABATEMENT;

EID: 84884311451     PISSN: 15522938     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (23)

1. Splettstoesser, W., Seelhorst, U., Wagner, W., Boutier, A., Micheli, F., Mercker, E., and Pengel, K. , "Higher Harmonic Control Aeroacoustic Rotor Test (HART) - Test Documentation and Representative Results," DLR Report IB 129-95/28 and appendices, December 1995.
2. Jacklin, S.A., Blaas, A., Teves, D., and Kube, R., "Reduction of Helicopter BVI Noise, Vibration and Power Consumption through Individual Blade Control," Proceedings of the American Helicopter Societry 51st Annual Forum, Fort Worth, TX, 1995.
3. Friedmann, P.P, "Vibration Reduction in Rotorcraft Using Actively Controlled Flaps - From Theoretical Concept to Flight-Ready Hardware," Proceedings of the AHS 4th Decennnial Aeromechanics Specialist's Conference, San Francisco, California, January 2004.
4. Cesnik, C.E.S., Shin S-J, Wilkie, W.K., Wilbur, M.L. and Mirick, P.H., "Modeling, Design and Testing of the NASA/Army/MIT Active Twist Rotor Prototype Blade," Proceedings of the American Helicopter Society 55th Annual Forum, Montreal, Canada, May 1999.
5. Wilbur, M.L., Mirick, P.H., Yeager Jr., W.T., Langston, C.W., Cesnik, C.E.S and Shin, S., "Vibratory Loads Reduction Testing of the NASA/Army/MIT Active Twist Rotor", Journal of the American Helicopter Society, Vol. 47, No. 2, April 2002
6. Booth Jr., E.R. and Wilbur, M.L., "Acoustic Aspects of Active-Twist Rotor Control," Journal of the American Helicopter Society, Vol. 49, No. 1, January 2002.
7. Chen, P.C., Baeder, J.D., Evands, R.A.D and Niemczuk, J., "Blade-vortex interaction noise reduction with active twist smart rotor technology," Smart Materials and Structures 10, pp. 77-85, 2001.
8. Thepvongs, S., Cesnik, C.E.S., and Voutsinas, S.G., "Aeroelastic and Acoustic Analysis for Active Twist Rotors," Proceedings of the 31st European Rotorcraft Forum, Florence, Italy, 2005.
9. Cesnik, C.E.S. and Hodges, D. H.: "VABS: A New Concept for Composite Rotor Blade Cross-Sectional Modeling," Journal of the American Helicopter Society, Vol. 42, No. 1, Jan. 1997
10. Hodges, D.H., "A mixed Variational Formulation Based on Exact Intrinsic Equations for Dynamics of Moving Beams," International Journal of Solids and Structures 26, pp. 1253-73, 1990.
11. Palacios, R, Cesnik, C.E.S., "Structural Dynamics of Integrally Strained Slender Wings," International Forum of Aeroelasticity and Structural Dynamics, Amsterdam, The Netherlands, June 2003.
12. Palacios, R., "Asymptotic Models of Integrally-Strained Slender Structures for High-Fidelity Nonlinear Aeroelastic Analysis," Ph.D. Thesis, The Unversity of Michigan, 2005
13. Voutsinas, S.G. and Triantos, D.G., "High Resolution Aerodynamic Analysis of Full Helicopter Configurations," 25th European Rotorcraft Forum, Rome, Italy, 1999.
14. Beale, J.T. and Majda, A., "High Order Accurate Vortex Methods with Explicit Velocity Kernels," Journal of Computational Physics, Vol. 58, pp. 188-208, 1985.
15. Farassat, F., Succi, G.P., "The prediction of helicopter rotor discrete frequency noise," Vertica, Vol. 7, No. 4, pp. 309-320, 1983.
16. Brenter, K.S., Prediction of Helicopter Rotor Discrete Frequency Noise - a Computer Program Incorporating Realistic Blade Motions and Advanced Acoustic Formulation, NASA-TM-87721, 1986.
17. Burley, C., HART II pre-test data, Personal communication via Cesnik, C.E.S., 2003.
18. Cesnik, C.E.S., Shin, S-J,Wilbur, M.L., "Dynamic response of active twist rotor blades," Smart Materials and Structures Smart Materials and Structures 10, pp. 62-76, 2001.
19. Cesnik, C. E. S., Mok, J., Morillo, J. A., and Parikh, A., "Design Optimization of Active Twist Rotor Blades," 30th European Rotorcraft Forum, Marseille, France, September 16-18, 2004.
20. Lim, J.W., Tung, C., and Yu, Y.H., "Prediction of Blade-Vortex Interaction Airloads with Higher-Harmonic Pitch Controls Using the 2GCHAS Comprehensive Code", Journal of Pressure Vessel Technology, Vol. 23, November 2001.
21. Liu, L., Patt. D., and Friedmann, P.P., "Simultaneous Vibration and Noise Reduction in Rotorcraft Using Aeroelastic Simulation," Proceedings of the AHS 60th Forum, Baltimore, Maryland, 2004
22. Brooks, TF., Boyd Jr., D.D., Burley, C.L., and Jolly Jr., J.R., "Aeroacoustic Codes for Rotor Harmonic and BVI Noise - CAMRAD.Mod1/HIRES," Journal of the American Helicopter Society, Vol. 45, April 2000.
23. Gandhi, F. and Tauszig, L., "A Method to Evaluate the Contributions of Individual Interactions to Helicopter Blade-Vortex Interaction Noise," Journal of the American Helicopter Society, Vol. 48, October 2003.