Application of time-domain unsteady aerodynamics to rotary-wing aeroelasticity

AIAA Journal

Volumn 24, Issue 9, 1986, Pages 1424-1432

  Dinyavari, M A H ^a,b   Friedmann, P P ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b BOEING COMPANY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AERODYNAMICS - WINGS AND AIRFOILS; MATHEMATICAL TECHNIQUES;

AEROELASTIC STABILITY; BLADE DYNAMICS; ROTARY-WING PROBLEM;

HELICOPTERS;

EID: 0022787993     PISSN: 00011452     EISSN: None     Source Type: Journal    
DOI: 10.2514/3.9459     Document Type: Article

References (16)

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2. Friedmann, P. P., “Recent Developments in Rotary-Wing Aero-elasticity,” Journal of Aircraft, Vol. 14, Nov. 1977, pp. 1027-1041.
3. Dinyavari, M.A.H. and Friedmann, P. P., “Unsteady Aerodynamics in Time and Frequency Domains for Finite Time Arbitrary Motion of Rotary Wings in Hover and in Forward Flight,” Proceedings AIAA /ASME/ASCE/AHS 25th Structures, Structural Dynamics and Materials Conference, Palm Springs, CA, May 1984, pp. 266-282.
4. Greenberg, J. M., “Airfoil in Sinusoidal Motion in Pulsating Stream,” NACA TN 1326, 1947.
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6. Ormiston, R. A. and Hodges, D. H., “Linear Flap-Lag Dynamics of Hingeless Helicopter Rotor Blades in Hover,” Journal of the American Helicopter Society, Vol. 17, April 1972, pp. 2-14.
7. Peters, D. A., “Flap-Lag Stability of Helicopter Rotor Blades in Forward Flight,” Journal of the American Helicopter Society, Vol. 20, Oct. 1975, pp. 2-13.
8. Peters, D. A. and Gaonkar, G. H., “Theoretical Flap-Lag Damping with Various Dynamic Inflow Models,” Journal of the American Helicopter Society, Vol. 25, July 1980, pp. 29-36.
9. Gaonkar, G. H. and Peters, D. A., “Use of Multiblade Coordinates for Helicopter Flap Stability with Dynamic Inflow,” Journal of Aircraft, Vol. 17, Feb. 1980, pp. 112-118.
10. Johnson, W., Helicopter Theory, Princeton University Press, Princeton, NJ, 1980.
11. Edwards, J. W., “Unsteady Aerodynamics Modeling and Active Aeroelastic Control,” Guidance and Control Laboratory, Department of Aeronautics and Astronautics, Stanford University, Stanford, CA, SUDAAR 504, Feb. 1977.
12. Asghar-Hessari-Dinyavari, M., “Unsteady Aerodynamics in Time and Frequency Domains for Finite-Time Arbitrary-Motion of Helicopter Rotor Blades in Hover and Forward Flight,” Ph.D. Dissertation, Mechanical, Aerospace and Nuclear Engineering Department, University of California, Los Angeles, CA, March 1985.
13. Venkatesan, C. and Friedmann, P. P., “Aeroelastic Effects in Multi-Rotor Vehicles with Applications to a Hybrid Heavy Lift System, Part I: Formulation of Equations of Motion,” NASA CR-3822, Aug. 1984.
14. Venkatesan, C. and Friedmann, P. P., “Finite State Modeling of Unsteady Aerodynamics and Its Application to a Rotor Dynamic Problem,” School of Engineering and Applied Science, University of California, Los Angeles, Rept. UCLA-ENG-85-10, March 1985.
15. Friedmann, P. P. and Kottapalli, S.B.R., “Rotor Blade Aeroelastic Stability and Response in Foward Flight,” Paper no. 14, Proceedings of the 6th European Rotorcraft Forum, Bristol, England, Sept- 1980.
16. Friedmann, P. P. and Kottapalli, S.B.R., “Coupled Flap-Lag-Torsional Dynamics of Hingeless Rotor Blades in Forward Flight,” Journal of the American Helicopter Society, Vol. 27, Oct. 1982, pp. 28-36