tautening dope

tautening dope

A finishing material brushed or sprayed on the fabric used to cover the framework of an aircraft. Aircraft dope has a film base of cotton fibers dissolved in certain acids and mixed with solvents and thinners. Plasticizers are mixed into the dope to give it resilience and keep it from being brittle.

When the dope is put on the fabric, it encapsulates, or surrounds, the fibers of the cloth, and as it dries, it shrinks and pulls the fibers close together. This shrinks, or tautens, the fabric on the framework. Some inorganic fabrics used to cover aircraft are shrunk with heat, and a special nontautening dope must be used with them. Nontautening dope does not shrink as much as tautening dope as it dries.

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Part of Speech: noun
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Industry/Domain: Aviation
Category: Aeronautics
Company: Aviation Supplies & Academics
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