What is a panel in aircraft structure?

A panel in aircraft structure refers specifically to a flat structural element that contributes to the surface of the aircraft. This definition encompasses a variety of applications, including wing skins, fuselage sections, and tail surfaces where panels serve vital roles in skinning and supporting the airframe's integrity.

Panels are critical for maintaining aerodynamic shape, structural rigidity, and overall strength while minimizing weight. They can be made from a variety of materials, such as aluminum or composite materials, which are chosen based on the need for strength, flexibility, and aerodynamic efficiency.

Understanding the role of panels is essential in aircraft design, as they help manage aerodynamic loads and contribute to the aircraft's overall performance. This is contrasted with other structural components. For instance, cylindrical elements, support frames, and interior partitions have distinct functions that do not align with the general definition of a panel.