풍동, or "wind tunnel," is a controlled environment used to study the effects of air movement on objects. It allows researchers to simulate wind conditions and analyze how different shapes and designs perform under various airflow scenarios. This is particularly useful in fields like aerospace engineering and automotive design. In a 풍동, models of vehicles or aircraft are placed in a chamber where air is blown at them at specific speeds. By observing the forces acting on these models, engineers can optimize designs for better performance, efficiency, and safety. This technology is essential for developing advanced aircraft and automobiles.