Unsteady aerodynamics of helicopter rotor hovering in dynamic ground effect

23rd Atmospheric Flight Mechanics Conference

Volumn , Issue , 1998, Pages 711-720

  Xin, Hong ^a   Prasad, J V R ^a   Peters, D A ^b  

^a Georgia Institute of Technology   (United States)

^b WASHINGTON UNIVERSITY IN ST LOUIS   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

HELICOPTER ROTORS;

ANALYTICAL EXPRESSIONS; GROUND SURFACES; GROUND VELOCITY; INFLOW MODELING; NUMERICAL RESULTS; PERTURBATION POTENTIAL; PRESSURE PERTURBATION; UNSTEADY AERODYNAMICS;

GROUND EFFECT;

EID: 84983113058     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.1998-4456     Document Type: Conference Paper

References (11)

1. Cheeseman, I. C. and Bennett, W. E. "The effect of the ground effect on a helicopter rotor in forward flight," ARC R&M 3021, September, 1955.
2. nd Annual Forum of the American Helicopter Society, 1976.
3. Hayson, H. H. "Theoretical study of the effect of the ground proximity on the induced efficiency of helicopter rotors," NASA TM X-71951, May, 1977.
4. Curtiss, H. C., Jr., et al. "Rotor aerodynamics in ground effect at low advance ratios," AD-All 8609, July, 1982.
5. Gao, Z. and He, C. J., "A study of the rotor wake in Nap-of-the earth," Journal of Nanjing Aeronautical Institute, Vol. 7, No. 4, August, 1986.
6. Curtiss, H. C, Jr. and Sun, M., "Ground effect Aerodynamics," Vertica, Vol. 11, No. 1/2, 1987.
7. Prasad, J. V. R., Zhang, H. and Peters, D. A., "In-ground effect inflow models for lifting-rotors using a finite state modeling approach," 2nd International Conference on Mathematical Modeling, February, 1997.
8. He, C. J. "Development and application of a generalized dynamic wake theory for lifting rotors," Ph. D. thesis, Georgia Inst, of Tech., July, 1989.
9. rd Annual Forum of the American Helicopter Society, May, 1997.
10. Prasad, J. V. R., Xin, H. and Peters, D. A., Nagashima, T., Iboshi, N., "Development and Validation of a Finite State In-Ground Effect Inflow Model for Lifting Rotors," Presented at the 1997 AHS Technical Specialists' Meeting for Rotorcraft Acoustics & Aerodynamics, Williamsburg, VA, Nov. 28-30, 1997.
11. th Annual Forum, Washington, DC, May 19-22, 1998.