Unsteady aerodynamics of an airfoil/flap combination on a helicopter rotor using computational fluid dynamics and approximate methods

Journal of the American Helicopter Society

Volumn 56, Issue 3, 2011, Pages

  Liu, Li ^a   Padthe, Ashwani K ^a   Friedmann, Peretz P ^a   Quon, Eliot ^b   Smith, Marilyn J ^b  

^a UNIVERSITY OF MICHIGAN   (United States)

^b Georgia Institute of Technology   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVE FLAPS; AERODYNAMIC MODELS; APPROXIMATE METHODS; COMPRESSIBILITY EFFECTS; COMPUTATIONAL FLUID DYNAMICS CODES; FLAP MOTIONS; FLOW CONDITION; FLOW PHYSICS; LARGE EDDY; PERFORMANCE ENHANCEMENTS; RATIONAL FUNCTION APPROXIMATION; REDUCED ORDER MODELS; REYNOLDS-AVERAGED NAVIER STOKES SOLVERS; SIMULATION CODE; STATE-SPACE; THREE DIMENSIONAL EFFECT; TIME DOMAIN; TRAILING-EDGE FLAPS; UNSTEADY AERODYNAMICS; UNSTEADY AIRLOADS; VIBRATION AND NOISE REDUCTION;

AERODYNAMICS; APPROXIMATION THEORY; COMPUTER SIMULATION; HELICOPTER ROTORS; RATIONAL FUNCTIONS; TIME DOMAIN ANALYSIS; TURBULENCE MODELS;

COMPUTATIONAL FLUID DYNAMICS;

EID: 80052322766     PISSN: 00028711     EISSN: None     Source Type: Journal    
DOI: 10.4050/JAHS.56.032003     Document Type: Conference Paper

References (36)

1. Friedmann, P. P., de Terlizzi, M., and Myrtle, T. F., "New Developments in Vibration Reduction with Actively Controlled Trailing Edge Flaps", Mathematical and Computer Modelling, Vol. 33, (10-11), May-June 2001, pp. 1055-1083. (Pubitemid 32329018)
2. Friedmann, P. P., and Millott, T. A., "Vibration Reduction in Rotorcraft Using Active Control: A Comparison of Various Approaches", Journal of Guidance, Control, and Dynamics, Vol. 18, (4), July-August 1995, pp. 664-673.
3. Milgram, J. H., and Chopra, I., "Helicopter Vibration Reduction with Trailing Edge Flaps", AIAA 1995-1227, 36th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference Proceedings, New Orleans, LA, April 10-12, 1995.
4. Koratkar, N. A., and Chopra, I., "Wind Tunnel Testing of a Smart Rotor Model with Trailing Edge Flaps", Journal of the American Helicopter Society, Vol. 47, (4), October 2002, pp. 263-272. (Pubitemid 35263696)
5. Myrtle, T. R, and Friedmann, P. P., "Application of a New Compressible Time Domain Aerodynamic Model to Vibration Reduction in Helicopters Using an Actively Controlled Flap", Journal of the American Helicopter Society, Vol. 46, (1), January 2001, pp. 32-43. (Pubitemid 32189278)
6. Straub, F. K., Kennedy, D. K., Stemple, A. D., Anand, V., and Birchette, T. S., "Development and Whirl Tower Test of the SMART Active Flap Rotor", Proceedings of SPIE: Smart Structures and Materials 2004, Vol. 5388, July 2004, pp. 202-212.
7. Patt, D., Liu, L., and Friedmann, P. P., "Simultaneous Vibration and Noise Reduction in Rotorcraft Using Aeroelastic Simulation", Journal of the American Helicopter Society, Vol. 51, (2), April 2006, pp. 127-140. (Pubitemid 43810414)
8. Roth, D., "Advanced Vibration Reduction by IBC Technology", 30th European Rotorcraft Forum, Marseille, France, September 14-16, 2004.
9. Millott, T. A., and Friedmann, P. P., "Vibration Reduction in Helicopter Rotors Using an Actively Controlled Partial Span Trailing Edge Flap Located on the Blade", NASA CR 4611, June 1994.
10. Hariharan, N., and Leishman, J. G., "Unsteady Aerodynamics of a Flapped Airfoil in Subsonic Flow by Indicial Concepts", Journal of Aircraft, Vol. 33, (5), September-October 1996, pp. 855-868. (Pubitemid 126541847)
11. Jose, A., Leishman, J. G., and Baeder, J. D., "Unsteady Aerodynamic Modeling with Time-Varying Free-Stream Mach Numbers", Journal of the American Helicopter Society, Vol. 51, (4), October 2006, pp. 229-318.
12. Glaz, B., Friedmann, P. P., Liu, L., Kumar, D., and Cesnik, C. E. S., "The AVINOR Aeroelastic Simulation Code and Its Application to Reduced Vibration Composite Rotor Blade Design", AIAA 2009-2601, 50th AIAA/ASME/ASCE/AHS/ACS Structures, Structural Dynamics, and Materials Conference Proceedings, Palm Springs, CA, May 4-7, 2009.
13. de Terlizzi, M., and Friedmann, P. P., "Active Control of BVI Induced Vibrations Using a Refined Aerodynamic Model and Experimental Correlation", American Helicopter Society 51 st Annual Forum Proceedings, Fort Worth, TX, May 9-11, 1995, pp. 510-524.
14. Depailler, G., and Friedmann, P. P., "Reductions of Vibrations Due to Dynamic Stall in Helicopters Using an Actively Controlled Flap", AIAA 2002-1431, 43rd AIAA/ASME/ASCE/AHS/ACS Structures, Structural Dynamics, and Materials Conference Proceedings, Denver, CO, April 22-25, 2002.
15. Liu, L., Friedmann, P. P., Kim, I., and Bernstein, D. S., "Rotor Performance Enhancement and Vibration Reduction in Presence of Dynamic Stall Using Actively Controlled Flaps", Journal of the American Helicopter Society, Vol. 53, (4), October 2008, pp. 338-350.
16. Patt, D., Liu, L., and Friedmann, P. P., "Rotorcraft Vibration Reduction and Noise Prediction Using a Unified Aeroelastic Response Simulation", Journal of the American Helicopter Society, Vol. 50, (1), January 2005, pp. 95-106. (Pubitemid 40282444)
17. Straub, F. K., Anand, V. R., Birchette, T., and Lau, B. H., "Wind Tunnel Test of the SMART Active Flap Rotor", American Helicopter Society 65th Annual Forum Proceedings, Grapevine, TX, May 27-29, 2009.
18. Liu, L., Friedmann, P. P., and Padthe, A. K., "An Approximate Unsteady Aerodynamic Model for Flapped Airfoils Including Improved Drag Predictions", 34th European Rotorcraft Forum, Liverpool, UK, September 16-19, 2008.
19. Peroomian, O., Chakravarthy, S., Palaniswamy, S., and Goldberg, U., "Convergence Acceleration for Unified-Grid Formulation Using Preconditioned Implicit Relaxation", AIAA 98-0116, 36th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, January 12-15, 1998.
20. Peroomian, O., Chakravarthy, S., and Goldberg, U., "A "Grid-Transparent" Methodology for CFD", AIAA 97-0724, 35th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6-9, 1997.
21. Jespersen, D. C, Pulliam, T. H., and Buning, P. G., "Recent Enhancements to OVERFLOW", AIAA 97-0644, 35th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6-9, 1997.
22. Meakin, R. L., and Wissink, A. M., "Unsteady Aerodynamic Simulation of Static and Moving Bodies Using Scalable Computers", AIAA 99-3302, 14th AIAA Computational Fluid Dynamics Conference Proceedings, Norfolk, VA, June 28-July 1, 1999.
23. Spalart, P. R., and Allmaras, S. R., "One-Equation Turbulence Model for Aerodynamic Flows", AIAA 92-0439, 30th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6-9, 1992.
24. Fang, Y., and Menon, S., "A Two-Equation Subgrid Model for Large-Eddy Simulation of High Reynolds Number Flows", AIAA 2006-0116, 44th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, January 9-12, 2006.
25. Shelton, A. B., Braman, K., Smith, M. J., and Menon, S., "Improved Turbulence Modeling for Rotorcraft", American Helicopter Society 62nd Annual Forum Proceedings, Phoenix, AZ, May 9-11, 2006.
26. McCroskey, W. J., McAlister, K. W, Carr, L. W, and Pucci, S. L., "An Experimental Study of Dynamic Stall on Advanced Airfoil Sections", NASA TM 84245, USAAVRADCOM TR-82-A-8, July 1982.
27. Smith, M., Koukol, B., Quackenbush, T, and Wachspress, D., "Reverse-and Cross-Flow Aerodynamics for High Advance-Ratio Flight", 35th European Rotorcraft Forum, Hamburg, Germany, September 22-25, 2009.
28. Richter, K., Le Pape, A., Knopp, T, Costes, M., Gleize, V, and Gardner, A. D., "Improved Two-Dimensional Dynamic Stall Prediction with Structured and Hybrid Numerical Methods", American Helicopter Society 65th Annual Forum Proceedings, Grapevine, TX, May 27-29, 2009.
29. Pulliam, T, "Artificial Dissipation Models for the Euler Equations", AIAA Journal, Vol. 24, (12), December 1986, pp. 1931-1940. (Pubitemid 17481056)
30. Krzysiak, A., and Narkiewicz, J., "Aerodynamic Loads on Airfoil with Trailing-Edge Flap Pitching with Different Frequencies", Journal of Aircraft, Vol. 43, (2), March-April 2006, pp. 407-418.
31. Rogers, K. L., "Airplane Math Modeling Methods for Actively Control Design", AGARD-CP-228, August 1977.
32. Rodden, W. P., and Albano, E., "A Doublet-Lattice Method for Calculating Lift Distributions on Oscillating Surfaces in Subsonic Flows", AIAA Journal, Vol. 7, (2), February 1969, pp. 279-285.
33. Bisplinghoff, R. L., Ashley, H., and Halfman, R., Aeroelasticity, Addison-Wesley, Cambridge, MA, 1955, Chap. 6, pp. 317-325.
34. Allwine, D. A., Strahler, J. A., Lawrence, D. A., Jenkins, J. E., and Myatt, J. H., "Nonlinear Modeling of Unsteady Aerodynamics at High Angle of Attack", AIAA 2004-5275, AIAA Atmospheric Flight Mechanics Conference and Exhibit, Providence, RI, August 16-19, 2004.
35. Lee, D., Leishman, J. G., and Baeder, J. D., "A Nonlinear Indicial Method for the Calculation of Unsteady Airloads", American Helicopter Society 59th Annual Forum Proceedings, Phoenix, AZ, May 6-8, 2003.
36. de Boor, C. A Practical Guide to Splines, Springer-Verlag, New York, NY, 2001, Chap. 11, pp. 141-142.