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Experimental and theoretical study for nonlinear aeroelastic behavior of a flexible rotor blade

Publication ,  Journal Article
Tang, DM; Dowell, EH
Published in: AIAA Journal
January 1, 1993

The purpose of this paper is to study the flutter instability and forced response of a nonrotating flexible rotor blade model with a geometrical structural nonlinearity and a freeplay structural nonlinearity. The ONERA stall aerodynamic model is used. External excitations are provided by base harmonic excitations in the pitch angle and the chordwise direction, respectively. Two cases are considered in this paper. Case A is for a nonlinear blade structure with an unstalled unsteady aerodynamic model. Case B is for the nonlinear blade structure with a large effective mean angle of attack. The effects of the structural and aerodynamic nonlinearities and initial disturbance on instability and forced response behavior are discussed. A wind-tunnel test has also been carried out in the Duke University low-speed wind tunnel. The wind-tunnel tests show generally good agreement between theory and experiment for both static and dynamic behavior. Although the mathematical and experimental model of the nonrotating blade is different from the operational rotating hingeless rotor blade, the results from the experimental-theoretical correlation study provide fundamental understanding of the nonlinear aeroelastic behavior for a flexural-flexural-torsional hingeless rotor blade. © 1993 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.

Duke Scholars

Published In

AIAA Journal

DOI

ISSN

0001-1452

Publication Date

January 1, 1993

Volume

31

Issue

6

Start / End Page

1133 / 1142

Related Subject Headings

  • Aerospace & Aeronautics
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering
 

Citation

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Tang, D. M., & Dowell, E. H. (1993). Experimental and theoretical study for nonlinear aeroelastic behavior of a flexible rotor blade. AIAA Journal, 31(6), 1133–1142. https://doi.org/10.2514/3.11738
Tang, D. M., and E. H. Dowell. “Experimental and theoretical study for nonlinear aeroelastic behavior of a flexible rotor blade.” AIAA Journal 31, no. 6 (January 1, 1993): 1133–42. https://doi.org/10.2514/3.11738.
Tang, D. M., and E. H. Dowell. “Experimental and theoretical study for nonlinear aeroelastic behavior of a flexible rotor blade.” AIAA Journal, vol. 31, no. 6, Jan. 1993, pp. 1133–42. Scopus, doi:10.2514/3.11738.
Tang DM, Dowell EH. Experimental and theoretical study for nonlinear aeroelastic behavior of a flexible rotor blade. AIAA Journal. 1993 Jan 1;31(6):1133–1142.
Journal cover image

Published In

AIAA Journal

DOI

ISSN

0001-1452

Publication Date

January 1, 1993

Volume

31

Issue

6

Start / End Page

1133 / 1142

Related Subject Headings

  • Aerospace & Aeronautics
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering