Initial aerodynamic and acoustic study of an active twist rotor using a loosely coupled CFD/CSD method

35th European Rotorcraft Forum 2009, ERF 2009

Volumn 1, Issue , 2009, Pages 446-457

  Boyd Jr , D Douglas ^a  

^a NASA LANGLEY RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVE TWIST; ACTIVE TWIST ROTOR; BLADE MOTION; BLADE PASSAGE FREQUENCY; BLADE ROOTS; CFD/CSD; COMPUTATIONAL FLUID DYNAMICS CODES; COMPUTATIONAL STRUCTURAL DYNAMICS; COMPUTATIONAL STUDIES; CONTROL PHASE; HIGHER HARMONIC CONTROL; LIFT-TO-DRAG RATIO; MEASURED DATA; MID-FREQUENCY; PERFORMANCE PENALTIES; PERFORMANCE PREDICTION; ROTOR BLADES; ROTOR PROFILES; ROTOR SYSTEMS; SINGLE FREQUENCY; TORSIONAL MOMENT; WILLIAMS;

AIRCRAFT; COMPUTATIONAL FLUID DYNAMICS; COMPUTATIONAL GEOMETRY; FORECASTING; GAS DYNAMICS; HELICOPTER ROTORS; LIFT DRAG RATIO; STRUCTURAL DYNAMICS;

AERODYNAMIC CONFIGURATIONS;

EID: 77952495578     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (14)

1. Yu, Y.H., Gmelin, B., Splettstoesser, W., Philippe, J.J., Prieur, J., Brooks, T.F., "Reduction of Helicopter Blade-Vortex Interaction Noise by Active Rotor Control Technology", Progress in Aerospace Science, Vol.33, pp 647-687, 1997.
2. van der Wall, B.G., Burley, C.L.: "2nd HHC Aeroacoustic Rotor Test (HART-II) - Part II: Representative Results", German Aerospace Center Institute Report IB 111-2005/03, February 5, 2005.
3. Brooks, T.F., Boyd, Jr., D.D., Burley, C.L., Jolly, Jr., R.J., "Aeroacoustic Codes for Rotor Harmonic and BVI Noise - CAMRAD.Modl/ HIRES", Journal of the American Helicopter Society, Vol 45, No.63, April 2000.
4. Burley, C.L., Brooks, T.F., Marcolini, M. A., Brand, A.G., Conner, D.A.: Tiltrotor Aeroacoustic Code (TRAC) Predictions and Comparison with Measurements", Journal of the American Helicopter Society, Vol45, No.80, April 2000.
5. Boyd, Jr., D.D., Burley, C.L., Conner, D.A.: "Acoustic Predictions for Manned and Unmanned Rotorcraft Using the Comprehensive Analytical Rotorcraft Model for Acoustics (CARMA) Code System", American Helicopter Society International Specialists' Meeting on Unmanned Rotorcraft, Jan 18-20, 2005, Phoenix, Arizona.
6. Nichols, R.H., Tramel, R.W., Buning, P.G.: "Solver and Turbulence Model Upgrades to OVERFLOW2 for Unsteady and High-Speed Applications", AIAA Paper 2006-2824, June 2006.
7. Johnson, W.J.: "CAMRAD-II: Comprehensive Analytical Model for Rotorcraft Aerodynamics and Dynamics", Volumes 1-9, Johnson Aeronautics, Palo Alto, CA, 2007.
8. Lim, J.W., Nygaard, T.A., Strawn, R., Potsdam, M.: "BVI Airloads Prediction using CFD/CSD Loose Coupling", American Helicopter Society Fourth Vertical Lift Aircraft Design Conference, San Francisco, California, January 18-20, 2006.
9. Sim, B.W., Lim, J.W.: "Blade-Vortex Interaction (BVI) Noise & Airload Prediction using Loose Aerodynamic/Structural Coupling", 62nd American Helicopter Society Forum, Phoenix, Arizona, May 2006.
10. Lim, J.W., Strawn, R.: "Prediction of HART-II Rotor BVI Loading and Wake System using CFD/CSD Loose Coupling", Journal of Aircraft, Vol.45, No.3, May-June 2008.
11. Boyd, Jr., D.D.: "HART-II Acoustic Predictions using a Coupled CFD/CSD Method", 65th American Helicopter Society Forum, Grapevine, Texas, May 27-29, 2009.
12. th American Helicopter Society Forum, Montreal, Canada, June 11-13, 2002.
13. th American Helicopter Society Forum, Montreal, Canada, June 11-13, 2002.
14. th Annual Forum, Montreal, Canada, June 11-13, 2002.