Definition
A type of aircraft construction in which the outer covering (skin) carries a major share of the structural loads, working together with the internal framework rather than serving only as a covering. The skin and the underlying frame form a single load-bearing unit.
Plain English
The aircraft's outer surface is not just a shell — it actually helps hold the airplane together and carries the forces of flight along with the frame underneath.
Context Anchor
Seen in airframe construction, aircraft inspection, and discussions of wing or fuselage damage.
Derivation
Stressed' here means 'carrying load' (under stress, in the engineering sense), and 'skin' refers to the outer covering of the airframe. Together: a skin that carries load. This contrasts with older designs where the skin was just fabric stretched over a frame and carried almost no load itself.
Why Pilots Care
Understanding this design helps pilots recognize why dents, cracks, or corrosion in the skin can affect overall strength and why certain inspections are required after damage.
Analogy
Think of a soda can. The thin aluminum wall is what makes it strong — crush the side and the whole can collapses. A stressed skin aircraft works the same way: the outer surface carries real load, not just appearance.
Intuition Check
Stressed does not mean emotionally tense, and skin does not mean a decorative outer layer. In this term, the outer surface is intentionally carrying part of the airplane’s forces.
Example Sentence 1
Most modern metal airplanes use stressed skin structure, so even minor skin damage requires proper inspection before further flight.
Example Sentence 2
After the hail encounter, the mechanic inspected the stressed skin structure for buckling or skin separation.