Gas dynamics is the study of how gases behave when they are in motion. It involves understanding the principles of fluid mechanics and thermodynamics to analyze how gases interact with their surroundings. This field is essential in various applications, including aerospace engineering, where it helps design aircraft and rockets. In gas dynamics, key concepts include pressure, temperature, and velocity. These factors influence how gases expand, compress, and flow. By applying mathematical models, scientists and engineers can predict gas behavior in different conditions, which is crucial for optimizing performance in systems like jet engines and pneumatic systems.