Damping prediction for hingeless rotor aeroelastic stability with experimental correlation

Journal Article (Journal Article)

A numerical simulation technique is applied to determine the transient response of a hingeless rotor model and predict the lag damping for correlation with experimental results from a wind-tunnel test. Numerical investigations indicate that the present theoretical/numerical method improves somewhat the correlation of the theoretical and experimental results over earlier eigenvalue, perturbation analyses. For a shaft angle of αs = 0 and -3 deg, the correlation still is not acceptable for the advance ratios, μ > 0.2. In addition to a steady inflow model, a 3 × 3 dynamic inflow model is also used in the present method. The results with this dynamic inflow model show some improvement relative to the experimental data, as compared to the uniform inflow model. For further improvement of the correlation with the experimental data, a highly efficient, accurate aerodynamic model suitable for the rotor blade aeroelastic stability analysis is required.

Full Text

Duke Authors

Cited Authors

  • Tang, D; Dowell, EH

Published Date

  • January 1, 1996

Published In

Volume / Issue

  • 33 / 6

Start / End Page

  • 1071 - 1078

Electronic International Standard Serial Number (EISSN)

  • 1533-3868

International Standard Serial Number (ISSN)

  • 0021-8669

Digital Object Identifier (DOI)

  • 10.2514/3.47059

Citation Source

  • Scopus