The Germans are apparently developing, and to some extent using, a device for
projecting large HE or incendiary bombs. The weapon is known as
the Schwere Wurfgerät or "heavy throwing apparatus". There are three
different types of this weapon, although the projectiles are the same in all cases.
The first type is known as the Schwere Wurfgerät 40 (s.W.G. 40), in
which the stand is a wooden ramp, which is transported to the firing position and then
dismounted and prepared for action.
The second type, the Schwere Wurfgerät 41 (s.W.G. 41), is similar to
the model 40, except that the stand is made of metal.
The third type consists of the model 40 mounted on a medium, armored, half-track
vehicle (see accompanying sketch).
This vehicle is normally used as an armored troop carrier with a complement of 10 men, and
is fitted with swivel mountings at the front and rear for model-34 machine guns. It seems
probable, however, that in some of these vehicles, the forward machine gun and mounting is replaced
by a 20-mm gun for defense against light armored vehicles.
The characteristics of the half-track vehicle are as follows:
|Weight (empty) about|| ||7 tons|
|Weight (loaded) about||8 1/2 tons|
|Overall length||5.8 m. (19 ft. 0 in)|
|Overall width||2.1 m. (6 ft. 11 in)|
|Overall height||2.1 m. (6 ft. 11 in)|
|Thickness of armor||10 to 15 mm. (0.4 to 0.6 in)|
|Turning radius||13.5 m. (44 ft)|
Each projector consists of two parts: carrier plates on the side of the
vehicle, and a skeleton framework to hold the bomb.
The carrier plates are pivotally mounted so that they can be elevated from 5 to 42 degrees, and
are each provided with a clamping lever and an elevation scale. The projectiles are
transported in, and fired from, the framework.
It is now known that the projectiles are of rocket type and are fired electrically.
The weight of the HE projectile is 181 lbs, and of the incendiary, 174 lbs. The HE projectile
has a main filling of 110 lbs of TNT, while the incendiary contains 13 gallons of oil.
A pink band approximately 1 1/4 in wide distinguishes the HE projectile from the
incendiary, which has a green and yellow band.
The following details of the projectile may contain minor inaccuracies but are believed
to be generally correct (the numbers refer to parts shown in sketch):
(1) Artillery-type, direct-action, nose fuse.
(2) Instantaneous detonating system.
(3) Main filling.
(4) Casing wall 3-mm (1/8 in) thick.
(5) Tail body.
(6) Propellant charge (diethylene glycol dinitrate).
(7) Socket for electric primer.
(8) Nozzle apertures.