Which combination best describes the sources of materials used in fabric coverings for aircraft?

• A. Organic and synthetic materials
• B. Ceramic and metallic
• C. Natural rubber and glass
• D. Pure cotton only

Answer: (B)

Fabric coverings on aircraft come from two main origins: natural plant fibers and synthetic fibers. Natural fabrics such as cotton or linen have been used for coverings for a long time, while modern coverings rely on synthetic fibers like nylon and polyester to improve strength and durability. This mix of organic (natural) and synthetic materials best describes the sources used for fabric coverings. Ceramics and metals aren’t used for the fabric itself because they’re rigid and heavy and wouldn’t provide the necessary flexibility; pure cotton alone is too limited, and materials like natural rubber or glass don’t fit the purpose either.