Double-Base Cannon Propellants

Double-Base Cannon Propellant Double-Base Canno... 

II)Double-Base Cannon Propellants. This term is applied in the US to proplnts contg NC and NG as major ingredients, while in foreign countries such as Germany or Italy, the term is extended to proplnts based on NC and DEGDN(or TEGDN or... 

Properties of Double-Base Cannon Propellants. Double-base NC-NG proplnts are considered "hot proplnts, because their heats of expl and flame temps are much higher than those of single-base proplnts (See Tables V, VI VII). This means that... 

US Double—Base Cannon Propellants. In Tables V, VI VII are given compns and some props of presently used proplnts. Proplnts M2, M5, M7, M8 M9 are "standard , whereas proplnts T31, T32 T33 are experimental. Proplnts contg NC, NG NGu are listed here under Triple—Base Propellants (See below)... 

Double-Base Cannon Propellants in Vol 2, C31-R to C33-R, and Production Methods of Representative Propellants in Vol 8, P420-L... 

Smokeless Propellant. Term used to distinguish the relatively smokeless single-base, double-base and triple-base propellants from BkPdr which produces heavy smoke (Ref 40a, p 133) (See also CANNON PROPELLANTS in Ref 44, p C29-R)... 

DOUBLE-BASE AND TRIPLE-BASE PROPELLANTS. A description of double-base proplnts containing NC + NG was given in this Encycl under BALLI5TITE (Vol 2, pp B8-L to B10-L), under CANNON PROPELLANT Vol 2, pp C33-L to C37-L) and under CORDITE (VoL 3, PP C531-L to C541-R). Some Ball Powders, described in Vol 2, pp Bll-R to B16-L can be made double-base. The description did not include the German proplnts which were described previously in Refs 1, 2 3 and in Ref 4, pp Get 142 (Table 43) Ger 146 (Table 46), under PROPELLANT (Treibmittei)... 

Accdg to compositions, cannon smokeless proplnts may be subdivided into single-base-, double-base- and triple-base-proplnts. The last two proplnts are sometimes called "compound proplnts. The so-called "composite proplnts, used in JATOS and rockets, are described under Composite Propellants... 

Uses. Blended NC is used in the manuf of single-base and double-base proplnts. Requirements of the US Armed Forces for NC s used in manufg proplnts are given in Specification MIL-N-244A(See also Cannon Propellant)... 

Double-Base Propellants for Cannons. The discovery of colloidal pioplnts based on two expl ingredients (NC St NG), dates from 1887 ... 

Double-Base Propellants for Cannons. The discovery of colloidal proplnts based on two expl ingredients (NC NG), dates from 1887 88 when A. Nobel of Sweden developed Ballis-r fire (See Vol 2, pB8-L). This proplnt, as well as Cordite See this Vol), developed slightly later (1889) in England, is now known as double-base propellant... 

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),... 

Continuous Solvent—Extrusion Process. A schematic for a typical continuous process, widely used for making solvent propellant for cannons, is shown in Figure 7. This continuous process produces ca 1100 metric tons of single-base propellant per month at the U.S. Army Ammunition Plant (Radford, Virginia). Continuous processes have also been developed for double- and triple-base propellants and for stick as well as granular geometries. A principal aspect of these processes has been the extensive use of single- and double-screw extmders instead of the presses used in the batch process. 

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