Aeroelastic analysis enables the simulation of structural models in the presence of an air stream. With the Aeroelasticity module, an optional add-on module to the Femap with NX Nastran base module, you have access to static aeroelastic capabilities for stress, load, aerodynamic, and control system analysis and design using a common finite element representation. Aeroelasticity is applicable in the design of airplanes, helicopters, missiles, suspension bridges and even tall chimneys and power lines.