Introduction
Airplane structures are not completely rigid, and aeroelastic phenomena arise when structural deformations induce changes on aerodynamic forces. The additional aerodynamic forces cause an increase in the structural deformations, which leads to greater aerodynamic forces in a feedback process. These interactions may become smaller until a condition of equilibrium is reached, or may diverge catastrophically if resonance occurs.
Aeroelasticity can be divided in two fields of study: steady (static) and dynamic aeroelasticity.
Read more about this topic: Aeroelasticity
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