EASA Module 11 Practice Exam

A domed bulkhead uses curvature to carry pressure loads efficiently. The dome shape distributes the forces from differential pressure across the surface, increasing stiffness and resisting bending or buckling. That means the bulkhead can maintain its shape and integrity under cabin pressurization with less deformation than a flat wall. While bulkheads can seal or isolate fire and other functions, the curved geometry specifically provides the strength to handle pressure without deforming, which is why it’s preferred for this purpose. Absorbing moisture is unrelated to the structural role of a bulkhead.