Finite-state aeroelastic modeling of rotating wings with deformable airfoils

This paper presents a new low-order aeroelastic model for rotating wings with deformable airfoils. The structural formulation captures plate-like deformation in a geometrically-nonlinear beam-like framework, allowing the use of conventional aeromechanical approaches. The aerodynamics model consists of finite-state formulations of both a two-dimensional deformable airfoil theory and dynamic inflow theory. Preliminary numerical studies are conducted to examine basic performance and vibration-related characteristics of camber-actuated rotor blades.