Cannon powder

Multi perforated Propellant Grains. See Cannon Propellant or Cannon Powder in Vol 2, C30—31, Grains of Smokeless Proplnts in Vol 6, G123... 

Perforated Grains (Propellants). See under Camion Propellant or Cannon Powder in Vol... 

HMX, binders, etc b) combination of ingredients into blends, grains or formulations, such as cannon powder, Comp B, extruded doublebase proplnt grains, etc c) loading of warheads, bombs, rocket motors, etc, with the blends or formulations and d) final assembly and pack-out of complete munitions, including metal parts... 

Jalnias Powders. The following compns for Cannon Powder - KN03 75, Na Picrate 3, sulfur 10, coal 10 KC103 2% and Rifle Powder — KN03 15, Na Picrate 8, sulfur 10, coal 15 KC103 2% are found in Ref Ref Perez Ara (1945), p 223... 

Cannon powder is manufactured by kneading in an edge runner followed by pressing the cake to a high density. Afterwards the mass is corned, moistened to 3-3.5% water content and pressed again into cakes at a pressure of 100 kg/cm2. 

T. J. Rodman, Properties of Metals for Cannon and the Quality of Cannon Powder, C. H. Crosby, Boston, 1861, according to J. Taylor [5]. 

A large content of diphenylamine may be particularly detrimental to the ballistic properties in fine-grain (rifle) powders. That is why 0.5-1.0% diphenylamine is used in these powders whereas in slower burning cannon powders 1.5-2.0% is used. 

The influence of the web thickness on the ballistic properties of cannon powder is illustrated by the following example of strip powder used for 105-120 mm field guns. The total solubility of this powder is 35 %. 

In some countries (e.g. in the U.S.S.R. and in the U.S.A.) thick strips (for cannon powders) may be cut immediately after the extrusion of the tubes. This is possible only when pyrocollodion cotton is used for the manufacture of the powder since it is easily soluble and requires only a small amount of solvent (about 80% by weight of nitrocellulose). After cutting the powder is subjected to predrying. When... 

After drying, cannon powders, i.e. strips or tubes, are subjected to a second grading as they may have been distorted or discoloured on soaking. 

The ballistic properties of ordinary cannon powders are more easily controlled, therefore those of individual batches intended for blending are not examined. Exceptions are made when manufacture is restarted after a long interruption or is commen-... 

The standard specifications permit the moisture content to range within certain limits. This enables the producer to regulate the moisture content to obtain the required ballistic properties. If the powder is too vivacious it should be moistened to the upper limit, while if it is less vivacious, the lower limit is preferable. In determining the moisture content the following practical rule should be observed. In rifle powder an increase of the moisture content by 0.01% lowers the muzzle velocity v0 by 4-5 m/sec and the pressure by 50-70 kg/cm2. In cannon powder the variations of ballistic properties are smaller and depend on the type of powder and on the calibre of the gun. 

Rolling. It was carried out using horizontal rollers 40 cm dia. and 100-120 cm in length, rotating with a speed of 11 r.p.m. For paste made with dinitroglycol it was sufficient to maintain a temperature of 70-80°C. A charge of about 15 kg was rolled for 18-30 min. The sheets issued from the rollers completely gelatinized. In cannon powders 3-5% water was left in the sheets since this facilitated the formation of tubes. 

Cannon Powders). Single-base proplnts intended for use in cannons are solid compns contg as a major ingredient NC, fully gelatinized by a volatile solvent(such as eth-alc) with or vjb DNT, TNT or MNN which act as auxiliary gelatinizers and as flash reducers. As minor ingredients, these proplnts contain a stabilizer(such as DPhA) with or vfo a flash reducer(such as K sulfate)... 

Figube 77. Smokeless Powder Blending Tower. The powder is blended by being made to flow through troughs and bins. Lots as large as 50,000 pounds of rifle powder and 125,000 pounds of cannon powder have been blended in this tower. 

NC from single-base cannon powder contg DNT and DBP Preferential solution of the DNT and DBP using an extm process with a mixt of benz-w 17... 

Rodman published Properties of Metals for Cannon and Qualities of Cannon Powder in Boston in 1861. In his expts with the 15-inch gun that bears his name he developed the principle of special powders , ie, that there is a certain definite relation between the size, form and d of a powder that would give the best powder for a given gun in other words, a powder that would give the highest velocity for a given pressure. 

Solventless Powder. See under Cannon Powder (Propellants) in Vol 2, C33-R, and Propellants, 50110 in VOl O, rwj-ato rHUo-x anti... 

Trivilene. One of the names for Dirutrotoluene, when used for coating cannon powder grains Ref Anon, Smokeless Powder Cannon Ingredients , Hercules Powder Co Test Method S-50 (Feb 27,1936 revised Oct 1,1940)... 

Du Pont Co. patented a flashless cannon powder of colloided nitrocellulose containing grains of a mixture composed of charcoal and a nitrate. 

Uses Was used by German Army as cannon powder in World War I. 

Uses In gelatinized form as the basis of all propellants either alone, particularly for cannon powder, or in mixture with guncotton in the small er-caliber guns (See Smokeless Powder), or in mixtnre with nitroglycerine in double-base powders (See),... 

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