A 100-mm (4-in) smoke and HE mortar, throwing a 16-pound bomb 3,300
yards and used to some extent by airborne troops, has been captured in the
Middle East. While the mortar is a standard smoke or chemical warfare weapon
in the German Army, HE is also fired.
Designed on the familiar German lines, the weapon consists of a barrel,
baseplate, and bipod, with a total weight of 205 pounds, the three principal
components being of approximately equal weight. It is, in fact, simply a larger and
heavier version of the German 81-mm mortar.
There are reported to be two projectiles, one weighing 16 pounds, the
other 19 pounds.
b. 19-pound Bomb
No details of the construction of the 19-pound projectile are yet available.
The primary propelling charge is 154 grains of nitroglycerine flake. The
augmenting charges are nitroglycerine annular propellant. Augmenting charge I contains
756 grains; charge II, 1,358; and charge III, 1,574 grains.
The propelling charges are made up as follows:
Charge I (kleine Ladung) primary and augmenting charge
I 427 f/s muzzle velocity
Charge II (mittlere Ladung) primary and augmenting charges
I and II 755 f/s muzzle velocity
Charge III (grosse Ladung) primary and augmenting charges
I, II and III 1,017 f/s muzzle velocity
c. 16-pound Bomb
From a German document come details of a 16-pound bomb for the same mortar:
Length: 17 in
Maximum diameter: 4.09 in
Thickness of walls: 1/8 - 3/10 in
Maximum range: 3,300 yds