NUMERICAL-MODEL OF UNSTEADY SUBSONIC AEROELASTIC BEHAVIOR Academic Article uri icon

abstract

  • The present paper describes a numerical simulation of unsteady subsonic aeroelastic responses. The technique accounts for aerodynamic nonlinearities associated with angles of attack, vortex-dominated flow, static deformations, and unsteady behavior. The fluid and the wing together are treated as a single dynamic system, and the equations of motion for the structure and flowfield are integrated simultaneously and interactively in the time domain. The method employs an iterative scheme based on a predictor-corrector technique. The aerodynamic loads are computed by the general unsteady vortex-lattice method and are determined simultaneously with the motion of the wing. Two models are used to demonstrate the technique: a rigid wing on an elastic support experiencing plunge and pitch about the elastic axis and an elastic wing rigidly supported at the root chord experiencing spanwise bending and twisting. © 1990 American Institute of Aeronautics and Astronautics, Inc., All rights reserved.

published proceedings

  • AIAA JOURNAL

author list (cited authors)

  • STRGANAC, T. W., & MOOK, D. T.

citation count

  • 48

complete list of authors

  • STRGANAC, TW||MOOK, DT

publication date

  • May 1990