Simulation of aeroelastic limit-cycle oscillations of aircraft wings with stores


Conference Paper

© 2013 by the American Institute of Aeronautics and Astronautics, Inc. Aircraft wings carrying stores are susceptible to nonlinear aeroelastic limit-cycle oscillations, which can lead to reduced flight and mission performance. Limit-cycle-oscillation dynamics and control simulation studies, although of great importance, are often based on simplified typical-section airfoil models. In this work, the more accurate beam- rod representation is used to capture the spanwise varying displacement of a wing with store. The spanwise variation of wing geometry and structural properties, as well as the presence of multiple stores on rigid or flexible mounts, is efficiently modeled by the primitive-modes approach. Aeroelastic limit-cycle oscillation due to structural nonlinearity is demonstrated via time-marching simulations, as well as the computationally more efficient harmonic-balance method. Some novel forms of limit-cycle-oscillation behavior are observed as the model parameters are varied, and these are explained in terms of the flutter/divergence properties of the base linear aeroelastic system. Copyright

Full Text

Duke Authors

Cited Authors

  • Padmanabhan, MA; Pasiliao, CL; Dowell, EH

Published Date

  • January 1, 2014

Published In

Volume / Issue

  • 52 / 10

Start / End Page

  • 2291 - 2299

International Standard Serial Number (ISSN)

  • 0001-1452

Digital Object Identifier (DOI)

  • 10.2514/1.J052843

Citation Source

  • Scopus