What does the planform of a wing refer to?

The planform of a wing refers to the shape of the wing when viewed from above. This includes the outline and dimensions of the wing, which can influence aerodynamic characteristics such as lift, drag, and stability. The design of the planform is crucial in aircraft design, as it affects the performance of the aircraft in flight. Factors like the span, aspect ratio, and overall shape can optimize performance for various flight conditions.

Understanding the planform is essential for pilots and engineers, as it plays a critical role in how an aircraft handles and responds in the air. Analyzing the planform helps in assessing the efficiency of the wing design for different missions or flight profiles. For instance, a delta wing has a distinct planform that allows for high-speed performance, while a high-aspect-ratio wing is typically associated with gliders and long-distance efficiency.