Which structural component provides shape and rigidity to an aircraft's wing?

• A. Formers
• B. Ribs
• C. Longerons
• D. Spars

Answer: (B)

The structural component that provides shape and rigidity to an aircraft's wing is the rib. Ribs are essential elements in the wing structure, as they create the airfoil shape, which is critical for aerodynamic performance. They span the wing's width and are typically arranged perpendicular to the spars, contributing to the wing's overall integrity and lift-generating capability.

While formers, longerons, and spars are also important parts of aircraft structures, they serve different purposes. Formers are primarily used in fuselage construction to provide cross-sectional shape, longerons are longitudinal members that provide strength along the length of the fuselage, and spars are the main load-bearing members of the wing, providing structural strength and support. However, it is the ribs that specifically define the wing’s contour and help maintain its shape under aerodynamic loads.