This thesis work, developed in collaboration with AvioAero - A GE Aviation Business, has the goal to analyze the aeroelastic behavior of LPT blade. Today in fact one of the most important objective of the aerospace industry is to realize lighter engines with a lower environmental impact. Particularly is object of study an innovative type of blades, realized with a new geometry and lighter materials, which could manifest aeroelastic instabilities during the flight mission. A detailed 3D Flutter Analysis, which is a multidisciplinary work that includes both fluid-dynamics and structural analysis, could strongly help the designers to better understand the aeroelastic response of this new generation of blades.