The exhibit consists of mechanical models and angle adjustment devices for five common airfoils: symmetrical airfoil, biconvex airfoil, plano convex airfoil, concave convex airfoil, and S-shaped airfoil, as well as a hot air blower and schlieren photography equipment, and a screen. Aiming to study the aerodynamic characteristics of airfoils through mechanical interaction, the specific manifestation is achieved through schlieren photography technology (a photography technique that uses the disturbance of airflow on light waves to transform the changes in airflow that cannot be seen by the naked eye into visible images), observing the airflow shape formed by the airflow passing over wings of different shapes and angles under the action of wind, and forming an experimental analysis of the relationship between wings and air based on the visualization of the airflow field. The basic conclusion is that "wings must have lift, but they must have angles of attack or curvature. However, each coefficient has the most suitable range, and exceeding the range will result in negative effects." This guides visitors to feel the flow field characteristics of the air flow on the surface of the aircraft during flight. Enhance the public's scientific literacy and increase.
