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Experimental and theoretical study of gust response for a wing-store model with freeplay

Publication ,  Journal Article
Tang, D; Dowell, EH
Published in: Journal of Sound and Vibration
August 22, 2006

An experimental delta wing/store model with freeplay in a periodic gust field has been designed and tested in the Duke wind tunnel. The wing structure is modeled theoretically using von Karman plate theory that accounts for geometric strain-displacement nonlinearities in the plate wing structure. A component modal analysis is used to derive the full structural equations of motion for the wing/store system. A 3-D time domain vortex lattice aerodynamic model including a reduced order model aerodynamic technique and a slender body aerodynamic theory for the store are also used to investigate the nonlinear aeroelastic system. The effects of the freeplay gap, the gust angle of attack and the initial conditions on the gust response are discussed. The quantitative correlations between the theory and experiment are reasonably good, but in the range of the dominant resonant frequency of this nonlinear system, i.e. at larger response amplitudes, the correlations are not good. The theoretical structural model needs to be improved to determine larger amplitude motions near the resonant frequency. © 2006 Elsevier Ltd. All rights reserved.

Duke Scholars

Published In

Journal of Sound and Vibration

DOI

EISSN

1095-8568

ISSN

0022-460X

Publication Date

August 22, 2006

Volume

295

Issue

3-5

Start / End Page

659 / 684

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Tang, D., & Dowell, E. H. (2006). Experimental and theoretical study of gust response for a wing-store model with freeplay. Journal of Sound and Vibration, 295(3–5), 659–684. https://doi.org/10.1016/j.jsv.2006.01.024
Tang, D., and E. H. Dowell. “Experimental and theoretical study of gust response for a wing-store model with freeplay.” Journal of Sound and Vibration 295, no. 3–5 (August 22, 2006): 659–84. https://doi.org/10.1016/j.jsv.2006.01.024.
Tang D, Dowell EH. Experimental and theoretical study of gust response for a wing-store model with freeplay. Journal of Sound and Vibration. 2006 Aug 22;295(3–5):659–84.
Tang, D., and E. H. Dowell. “Experimental and theoretical study of gust response for a wing-store model with freeplay.” Journal of Sound and Vibration, vol. 295, no. 3–5, Aug. 2006, pp. 659–84. Scopus, doi:10.1016/j.jsv.2006.01.024.
Tang D, Dowell EH. Experimental and theoretical study of gust response for a wing-store model with freeplay. Journal of Sound and Vibration. 2006 Aug 22;295(3–5):659–684.
Journal cover image

Published In

Journal of Sound and Vibration

DOI

EISSN

1095-8568

ISSN

0022-460X

Publication Date

August 22, 2006

Volume

295

Issue

3-5

Start / End Page

659 / 684

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences