A new time-domain approach for computing flutter speed is presented. Based on the time-history result of aeroelastic simulation, the unknown unsteady aerodynamics model is estimated using a system identification technique. The full aeroelastic model is generated via coupling the estimated unsteady aerodynamic model with the known linear structure model. The critical dynamic pressure is computed and used in the subsequent simulation until the convergence of the critical dynamic pressure is achieved. The proposed method is applied to a benchmark cantilevered rectangular wing.
New Flutter Analysis Technique for Time-Domain Computational Aeroelasticity
AIAA SciTech 2017 ; 2017 ; Grapevine, TX, United States
2017-01-09
Conference paper
No indication
English