Parametric Study of Flutter for an Airfoil in Inviscid Transonic Flow

Abstract

With the use of a state of the art inviscid computational fluid dynamic harmonic balance aerodynamic-Euler-based code, a systematic, parametric investigation is presented into how the several structural parameters and freestream Mach number of a transonic flow affect the flutter characteristics of a typical two-degree-of-freedom transonic airfoil configuration. The computational efficiency of the time-linearized option of the harmonic balance aerodynamic model allows a much more thorough exploration of the parameter range than has been possible previously.