Definition
A woven textile covering stretched over an aircraft's structural framework (such as a truss-type fuselage or wing ribs) to form the outer skin. The fabric is attached, tensioned, and then sealed and finished — historically with cellulose dope, more recently with polyester systems — to create a smooth, airtight, weatherproof surface that gives the aircraft its aerodynamic shape.
Plain English
A tough cloth skin pulled tight over the aircraft's frame and then painted with a special coating to make it firm, smooth, and weatherproof. The frame underneath gives the aircraft its strength; the cloth gives it its outer shape.
Context Anchor
Seen when studying older or fabric-covered aircraft structures, especially truss-type fuselages and wings.
Derivation
‘Fabric’ comes from the Latin fabrica, meaning ‘a workshop’ or ‘something made by craft.’ In aviation it kept the simple sense of ‘a made cloth,’ which fits how early aircraft were literally hand-built and hand-covered.
Why Pilots Care
Fabric-covered aircraft need careful preflight inspection for tears, loose seams, sun damage, and soft spots, because the fabric is part of the aircraft's structural integrity in flight, not just a cosmetic skin. Worn or rotted fabric can fail at high airspeeds.
Intuition Check
Do not think of cloth fabric as ordinary clothing material. In this context, it means an aircraft covering material installed and treated as part of the airplane’s outer surface.
Example Sentence 1
The Piper Cub's wings use a cloth fabric covering stretched over wooden ribs and a metal spar.
Example Sentence 2
Early trainers used cotton cloth fabric because it was light and could be tightened with dope to create a smooth surface.