The paper describes a formulation for aeroelastic analysis of aircraft with high-aspect-ratio wings. The analysis is a combination of a geometrically-exact mixed formulation for dynamics of moving beams and finite-state unstaeady aerodynamics with the ability to model dynamic stall. The analysis also takes into account gravitational forces, propulsive forces and rigid-body dynamics. The code has been validated against the exact flutter speed of the "Goland" wing. Further results have been obtained which give insight into the effects of the structural and aerodynamic nonlinearities on the trim solution and flutter speed.
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