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Damping prediction for a stalled rotor in flap-lag with experimental correlation

Publication ,  Journal Article
Tang, DM; Dowell, EH
Published in: Journal of the American Helicopter Society
January 1, 1995

A direct numerical time-marching integration is used to compute the transient response (free oscillation) of the flap-lag motion of a rotor. A time-domain quasilinear model identification technique is applied to identify the damping and frequency for the regressing mode, except for the chaotic lag response when stall occurs. Numerical examples and correlation with previous experimental results are provided. It is found that the present theoretical method has improved the flap-lag stability analysis with respect to agreement with experiment.

Duke Scholars

Published In

Journal of the American Helicopter Society

DOI

ISSN

0002-8711

Publication Date

January 1, 1995

Volume

40

Issue

4

Start / End Page

79 / 89

Related Subject Headings

  • Aerospace & Aeronautics
  • 4017 Mechanical engineering
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering
 

Citation

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Tang, D. M., & Dowell, E. H. (1995). Damping prediction for a stalled rotor in flap-lag with experimental correlation. Journal of the American Helicopter Society, 40(4), 79–89. https://doi.org/10.4050/jahs.40.79
Tang, D. M., and E. H. Dowell. “Damping prediction for a stalled rotor in flap-lag with experimental correlation.” Journal of the American Helicopter Society 40, no. 4 (January 1, 1995): 79–89. https://doi.org/10.4050/jahs.40.79.
Tang DM, Dowell EH. Damping prediction for a stalled rotor in flap-lag with experimental correlation. Journal of the American Helicopter Society. 1995 Jan 1;40(4):79–89.
Tang, D. M., and E. H. Dowell. “Damping prediction for a stalled rotor in flap-lag with experimental correlation.” Journal of the American Helicopter Society, vol. 40, no. 4, Jan. 1995, pp. 79–89. Scopus, doi:10.4050/jahs.40.79.
Tang DM, Dowell EH. Damping prediction for a stalled rotor in flap-lag with experimental correlation. Journal of the American Helicopter Society. 1995 Jan 1;40(4):79–89.

Published In

Journal of the American Helicopter Society

DOI

ISSN

0002-8711

Publication Date

January 1, 1995

Volume

40

Issue

4

Start / End Page

79 / 89

Related Subject Headings

  • Aerospace & Aeronautics
  • 4017 Mechanical engineering
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0901 Aerospace Engineering