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Aircraft dope is a plasticised lacquer that is applied to fabric-covered aircraft. It tightens and stiffens fabric stretched over airframes, which renders them airtight and weatherproof, increasing their durability and lifespan. [1] [2] The technique has been commonly applied to both full-size and flying models of aircraft. [3] [4]
Many transports, bombers and trainers still used fabric, although the flammable nitrate dope was replaced with butyrate dope instead, which burns less readily. [4] The Mosquito is an example of a fabric-covered plywood aircraft. The Vickers Wellington used fabric over a geodesic airframe which offered good combat damage resistance.
In 1936 it would have been either cotton or linen doped over the Duraloid skin. Clear nitrate was used to bond and fill the fabric covering. The filling of the fabric weave would have been accomplished by mixing extra fine sawdust with the clear dope sanded smooth to the desired finish. This same process was followed throughout the aircraft.
As the result of a flash-burn accident while burning some scrap aircraft fabric, he designed the Stits Aircraft Covering System, also called Poly-Fiber, which allowed the aircraft industry to stop using the highly flammable combination of Grade "A" cotton fabric treated with nitrate dope and instead move to polyurethane finishes on polyester ...
He sewed the fabric to each rib and the trailing edge by hand. He then covered it with 2 + 1 ⁄ 2 inches of scalloped tape and painted the fabric with two coats of acetate dope. He followed this with three coats of nitrate dope – orange for the wings and black for the fuselage.
Just before noon on 20 April 1928, a fire started in the shed where aircraft wings were coated with highly flammable cellulose nitrate 'dope.' A back room was crowded with seamstresses sewing fabric. All of the windows were high and barred, the walls and floors were soaked in the flammable chemical, as were the uniforms of the workers.
For five years, the Dreyfus brothers studied and experimented in a systematic manner in Switzerland and France. By 1910, they were producing film for the motion picture industry, and a small but constantly growing amount of acetate lacquer, called "dope", was sold to the expanding aircraft industry to coat the fabric covering wings and fuselage ...
Titanine was an aviation coatings (Aircraft dope) originally manufactured by Holzapfels, Ltd., of Newcastle, at their Felling-on-Tyne works, where they had been carrying on business as manufacturers of anti-corrosive paints and varnishes for marine purposes. Titanine continues to be manufactured in a range of paints and coatings used in the ...