Modelling rotor wakes in ground effect

Journal of the American Helicopter Society

Volumn 49, Issue 3, 2004, Pages 238-249

  Brown, Richard E ^a   Whitehouse, Glen R ^a  

^a IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CALCULATIONS; COMPUTATIONAL FLUID DYNAMICS; GROUND EFFECT; MATHEMATICAL MODELS; MATHEMATICAL MORPHOLOGY; NAVIER STOKES EQUATIONS; NUMERICAL METHODS; TURBOMACHINE BLADES; VISCOSITY; VORTEX FLOW; WAKES;

ROTOR FLOW; ROTOR WAKES; VORTICITY TRANSPORT MODEL; WAKE MORPHOLOGY;

HELICOPTER ROTORS;

EID: 4344678235     PISSN: 00028711     EISSN: None     Source Type: Journal    
DOI: 10.4050/jahs.49.238     Document Type: Article

References (24)

1. Zbrozek, J. K., and Dipl, J., "Ground Effect on a Lifting Rotor," ARC R&M 2347, 1950.
2. Hayden, J. S., "The Effects of the Ground on Helicopter Hovering Power Required," American Helicopter Society 32nd Annual Forum Proceedings, Washington DC, May 1976.
3. Saberi, H. A., and Maisel, M. D., "A Free Wake Rotor Analysis Including Ground Effect," American Helicopter Society 43rd Annual Forum Proceedings, 1987.
4. Lee, C. S., and He, C. J., "A Free Wake/Ground Vortex Model for Rotors at Low Speed in-Ground-Effect Flight," American Helicopter Society 51st Annual Forum Proceedings, 1995.
5. Itoga, N., Nagashima, T., Iboshi, N., Kawakami, S., Prasad, J. V. R., and Peters, D. A., "Numerical Analysis of Ground Effect for a Lifting Rotor Hovering Above Close Proximity to Inclined Flat Surface," Proceedings of the American Helicopter Society Specialists Meeting on Advanced Rotorcraft Technology and Disaster Relief, Gifu City, Japan, April 1998.
6. Xin, H., Prasad, J. V. R., Peters, D. A., Nagashima, T., and Iboshi, N., "A Finite State Inflow Model for Simulation of Helicopter Hovering in Ground Effect," American Helicopter Society 54th Annual Forum Proceedings, Washington, DC, May 1998.
7. Xin, H., Prasad, J. V. R., and Peters, D. A., "Unsteady Aerodynamics of Helicopter Rotor Hovering in Dynamic Ground Effect," AIAA Atmospheric Flight Mechanics Conference, Boston, MA., August 1998.
8. Griffiths, D. A., and Leishman, J. G., "A Study of Dual-Rotor Interference and Ground Effect Using a Free-Vortex Wake Model," American Helicopter Society 58th Annual Forum Proceedings, Montreal, June 2002.
9. Curtiss, H. C., Erdman, W., and Sun, M., "Ground Effect Aerodynamics," Vertica, Vol. 11, (1/2), 1987, pp. 29-42.
10. Sheridan, P. F., and Wiesner, W., "Aerodynarmcs of Helicopter Flight Near the Ground," American Helicopter Society 33rd Annual Forum Proceedings, May 1977.
11. He, C., and Gao, Z., "A Study of the Rotor Wake in Nap-of-the-Earth," Chinese Journal of Aeronautics, Vol. 1, (2), 1988, pp. 71-78.
12. Kusmarwanto, I., and Boyd, E. A., "Ground Effect on a Rotor Wake," Cranfield Institute of Technology College of Aeronautics Report 8510, Cranfield, UK, June 1985.
13. Kist, R. A., and Garry, K. P., "Hazards Due to Helicopter Wakes," Cranfield Institute of Technology College of Aeronautics Report 9311, Cranfield, UK, December 1993.
14. Brown, R. E., and Houston, S. S., "Comparison of Induced Velocity Models for Helicopter Flight Mechanics," Journal of Aircraft, Vol. 37, (4), July-August 2000, pp. 623-629.
15. Brown, R. E., "Rotor Wake Modeling for Flight Dynamic Simulation of Helicopters," AIAA Journal, Vol. 38, (1), January 2000, pp. 57-63.
16. Schumann, U., and Sweet, R. A., "A Direct Method for the Solution of Poisson's Equation with Neumann Boundary Conditions on a Staggered Grid of Arbitrary Size," Journal of Computational Physics, Vol. 20, (2), February 1976, pp. 171-182.
17. Toro, E. F., "A Weighted Average Flux Method for Hyperbolic Conservation Laws," Proceedings of the Royal Society of London, Series A: Mathematical and Physical Sciences, Vol. 423, (1864), June 1989, pp. 401-418.
18. Whitehouse, G. R., and Brown, R. E., "Modeling the Mutual Distortions of Interacting Helicopter and Aircraft Wakes," Journal of Aircraft, Vol. 40, (3), May-June 2003, pp. 440-449.
19. Harris, F. D., "Articulated Rotor Blade Flapping Motion at Low Advance Ratio," Journal of the American Helicopter Society, Vol. 17, (1), January 1972, pp. 41-48.
20. Harvey, J. K., and Perry, F. J., "Flowfield Produced by Trailing Vortices in the Vicinity of the Ground," AIAA Journal, Vol. 9, (8), August 1971, pp. 1659-1660.
21. Knight, M., and Hefner, R. A., "Analysis of Ground Effect on the Lifting Airscrew," NACA TM 835, 1941.
22. Cooke, A. K., and Fitzpatrick, E. W. H., Helicopter Test and Evaluation, American Institute of Aeronautics and Astronautics Education Series, Reston, VA., 2002.
23. Critzos, C. C., Heyson, H. H., and Boswinkle, R. W., "Aerodynamic Characteristics of NACA 0012 Airfoil Section at Angles of Attack from 0° to 180°," NACA TN 3361, 1955.
24. Prouty, R. W., Helicopter Performance, Stability, and Control, 2nd ed., Krieger, Melbourne, FL, 1995.