This document analyzes flutter in a flat composite plate. It begins by defining flutter as a dangerous phenomenon that can occur in flexible structures subjected to aerodynamic forces, including aircraft. Flutter results from interactions between aerodynamic, stiffness, and inertial forces. The document then summarizes the methodology used to model and analyze flutter in a composite plate wing structure with different ply orientations. It describes the basic flutter motion of aircraft wings and introduces the concept of aeroelastic tailoring to control deformation. The mechanics of composites and property averaging methods used to determine composite properties are also overviewed.