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Nonlinear rotor aeroelastic analysis with stall and advanced wake dynamics

Publication ,  Journal Article
Tang, D; Dowell, EH
Published in: Journal of Aircraft
January 1, 1997

This paper studies an effective lag damping prediction method for a flexible flap-lag-torsional hingeless rotor model and correlation with the experimental data for a four-bladed rotor. The ONERA dynamic stall models of lift, drag, and pitching moment for each aerodynamic airfoil element and an advanced three-dimensional finite state wake model are used. The nonlinear equations of motion are represented in terms of state variables with 4 × 10 structural state variables. Eight aerodynamic elements for each rotor blade and at least eight wake harmonics are employed. The aerodynamic and wake state variables are 4 × 48 and 45, respectively. A numerical simulation technique is applied to determine the transient response of the hingeless rotor model and to predict the lag damping. Numerical investigations indicate that the present theoretical/numerical method improves the correlation of the theoretical and experimental results compared to an earlier eigenvalue, perturbation analysis.

Duke Scholars

Published In

Journal of Aircraft

DOI

EISSN

1533-3868

ISSN

0021-8669

Publication Date

January 1, 1997

Volume

34

Issue

5

Start / End Page

679 / 687

Related Subject Headings

  • Aerospace & Aeronautics
  • 40 Engineering
  • 09 Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Tang, D., & Dowell, E. H. (1997). Nonlinear rotor aeroelastic analysis with stall and advanced wake dynamics. Journal of Aircraft, 34(5), 679–687. https://doi.org/10.2514/2.2229
Tang, D., and E. H. Dowell. “Nonlinear rotor aeroelastic analysis with stall and advanced wake dynamics.” Journal of Aircraft 34, no. 5 (January 1, 1997): 679–87. https://doi.org/10.2514/2.2229.
Tang D, Dowell EH. Nonlinear rotor aeroelastic analysis with stall and advanced wake dynamics. Journal of Aircraft. 1997 Jan 1;34(5):679–87.
Tang, D., and E. H. Dowell. “Nonlinear rotor aeroelastic analysis with stall and advanced wake dynamics.” Journal of Aircraft, vol. 34, no. 5, Jan. 1997, pp. 679–87. Scopus, doi:10.2514/2.2229.
Tang D, Dowell EH. Nonlinear rotor aeroelastic analysis with stall and advanced wake dynamics. Journal of Aircraft. 1997 Jan 1;34(5):679–687.

Published In

Journal of Aircraft

DOI

EISSN

1533-3868

ISSN

0021-8669

Publication Date

January 1, 1997

Volume

34

Issue

5

Start / End Page

679 / 687

Related Subject Headings

  • Aerospace & Aeronautics
  • 40 Engineering
  • 09 Engineering