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Here is the transcription: ## Fabric covering * The Wright Flyer was a fabric covered wood frame * **Primary advantage:** light weight * **Primary disadvantage:** durability, flammability * Finely woven organic fabrics * Such as Irish linen structure * Sag which exposed to the elements...

Here is the transcription: ## Fabric covering * The Wright Flyer was a fabric covered wood frame * **Primary advantage:** light weight * **Primary disadvantage:** durability, flammability * Finely woven organic fabrics * Such as Irish linen structure * Sag which exposed to the elements so builders started using oils and finishes * In 1916 nitrate dope came to be * Made fabric adhere, taute, and protected it * Extreme flammability * Butyrate dope was the model * Second dope not as flammable * But did not adhere well * Eventually the two dopes were combined * First nitrate was applied then butyrate concent