R. Meyer J. Köhler A. Homburg Explosives

53 Case Bonding
Table 3. Cartridge density, weight of 11//4 V 8c cartridge and number of 11//4 by
8c cartridges in 50-pound case
Density Weight of
1 1/4 V 8c
g/cm 3
Cartridge
Number of
1 1/4 V 8c
Cartridges
g in 50-pound
Case
Density Weight of
1 1/4 V 8c
g/cm 3
Cartridge
Number of
1 1/4 by 8c
Cartridges
g in 50-pound
Case
0.62 100 227 1.18 190 120
0.68 110 206 1.24 200 114
0.75 120 189 1.31 210 108
0.81 130 175 1.37 220 103
0.87 140 162 1.43 230 99
0.93 150 151 1.49 240 95
0.99 160 142 1.55 250 91
1.06 170 134 1.62 260 87
1.12 180 126 1.68 270 84
Cartridge Strength
Synonymous with W Bulk Strength.
Also W Strength; W Weight Strength.
Case
Brennkammer; chambre de combustion; also: Kiste; caisse
Pressure vessel designed to contain propellant charge before and
during burning.
Also: a large shipping container for explosive materials.
Case Bonding
This expression denotes a modern processing technique in the field of
rockets driven by solid propellants. The pourable W Composite Propellant
is cast directly into the combustion chamber, which has been
pre-treated to produce a bonding and insulating layer and is allowed to
harden (cure) in the chamber. Since temperature variations may be
expected to produce major stresses, owing to the different values of
thermal expansion coefficients, the success of the method depends to
a large extent on the bonding forces acting between the bonding and
insulating layer and the metal wall on the one hand, and the hardened
propellant on the other, as well as on their elastomeric stress relaxation
capability.