Aviation Standard Test Battery-E (ASTB E) Practice Test

What does camber refer to in relation to an airfoil?

1. The speed of the aircraft

2. The angle of attack of the wing

3. The curvature of an airfoil

4. The control surfaces of an aircraft

The correct answer is: The curvature of an airfoil

Camber refers to the curvature of an airfoil, which is a fundamental characteristic influencing its aerodynamic properties. Specifically, camber describes the shape of the airfoil from its leading edge to trailing edge as viewed from the side. A cambered airfoil typically has a curved upper surface and a flatter lower surface, which affects how the air flows over the wing. This curvature plays a crucial role in generating lift. When air moves over the cambered surface, it travels faster over the top than the bottom, creating lower pressure above the wing and higher pressure below it. This difference in pressure generates lift, allowing the aircraft to fly. The amount and shape of camber can vary depending on the desired performance characteristics of the aircraft, such as stability, lift efficiency, and drag. Understanding camber is essential for pilots and aeronautical engineers because it directly impacts wing performance during various flight conditions, including different angles of attack and speeds.