2019/03/13 by Max M. J. Opgenoord, Mark Drela, Karen E. Willcox +1 · 36 citations
Engineering · Physics and Astronomy · #Aerodynamics #Aeroelasticity #Aeroelasticity and Vibration Control #Aerospace engineering #Computational Fluid Dynamics and Aerodynamics #Computational fluid dynamics #Engineering #Flutter #Mechanics #Model Reduction and Neural Networks #Physics #Structural engineering #Transonic #Wing configuration
paper · open access · doi:10.2514/1.j057302
published in AIAA Journal 57(5), 1973-1987 (American Institute of Aeronautics and Astronautics)
openalex publication_date 2019/03/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/26
Transonic aeroelasticity is an important consideration in the conceptual design of next-generation aircraft configurations. This paper develops a low-order physics-based flutter model for swept high-aspect-ratio wings. The approach builds upon a previously developed flutter model that uses the flowfield’s lowest moments of vorticity and volume-source density perturbations as its states. The contribution of this paper is a new formulation of the model for swept high-aspect-ratio wings. The aerodynamic model is calibrated using offline two-dimensional unsteady transonic computational-fluid-dynamics simulations. Combining that aerodynamic model with a beam model results in a low-dimensional overall aeroelastic system. The low computational cost of the model permits its incorporation in a conceptual design tool for next-generation transport aircraft. The model’s capabilities are demonstrated by finding transonic flutter boundaries for different clamped-wing configurations and investigating the influence of transonic flutter on the planform design of next-generation transport aircraft.