Tag Archive for 'raketenwerfer'

8.8 cm R. Pz. B. Gr. 4312: Antitank Rocket Grenade

German 8.8 cm R. Pz. B. Gr. 4312: Antitank Rocket Grenade

This projectile is fired from the German 8.8 cm Raketenwerfer 43 (Püppchen—see page 352.1). From this weapon, as limited by the sight, a maximum effective range of 700 meters (765 yards) is obtained. The explosive head is identical to that of the rocket fired from the German counterpart of the “Bazooka” (page 357).

The fuze (AZ 5095) functions as follows: the force of set back causes the set-back ring to move rearward, bending the two prongs of the stirrup spring. These prongs, by engaging in the inside groove of the set-back ring prevent the ring from returning forward. Meanwhile, the striker needle is held away from the primer detonator by a flat, coiled clock spring inside the set-back ring. The clock spring unwinds, expanding against the inside of the fuze body, thus providing a slight delay in the arming of the fuze.

The propellant is a double base powder in the form of a single grain with 14 perforations. There is a hole .364 inch in diameter through the center of the grain. Three lands on the outside of the grain insure an outside burning surface. A triangular-shaped spacer holds the head igniter firmly against the quickmatch. The quickmatch fits in a slight indentation in the head igniter. The primer used in the “Püppchen” rocket is the standard No. 26 percussion primer found in many German artillery fuzes.

SPECIFICATIONS

Weight (complete, as fired)        5 lbs., 13.06 ozs.
Weight of H.E. filler 1 lb., 7 1/4 ozs.
Weight of fuze with detonator 3.15 os.
Weight of motor and tail assembly 1 lb., 8.5 ozs.
Weight of propellant 1.63 ozs.
Overall length 19.64 ins.
Length of propellant grain 4.95 ins.
Diameter of propellant grain .85 ins.
External diameter 3.494 ins.

German: p. 358 (August 1, 1945)

8.8 cm Raketenwerfer 43 (“Püppchen”): Rocket Launcher

8.8 cm Raketenwerfer 43 ("Püppchen"): German Rocket Launcher

The piece is aimed by grasping two handles fitted to the left rear of the cradle and aligning the open sights on the target. The rear sight is adjustable from 180 to 700 meters.

The launcher fires from a closed breech which is operated by a handle on top of the breech ring. Opening of the breech cocks the hammer which is held in firing position by a sear. When the projectile has been inserted and the breech closed, a squeeze of the right handle depresses the sear, releasing the hammer. A safety device fitted to the left of the firing pin in the center of the breechblock must be turned to “F” position before the launcher can be fired. An additional safety feature prevents the hammer from striking the firing pin unless the breech is fully closed. The small shock of recoil developed by the rocket gases against the closed breech is transmitted directly to the spade.

Ammunition used with the rocket launcher is a modified version of the 8.8 cm rocket projectile, having a percussion primer instead of the electric type. The rocket is fitted with a base plate with a protruding rim to seat the round in the tube. The base plate and primer are the only parts of the round which are extracted after firing.

SPECIFICATIONS

Caliber       88 mm (3.46 ins.)
Weight (firing position) 315 lbs.
Length of weapon (overall) 9 ft., 9 ins.
Length of barrel 63 ins.
Height (traveling position) 2 ft., 11 ins.
Height (on segments) 1 ft., 7 1/8 ins.
Width (overall) 3 ft., 4 ins.
Length of bore |
No. of grooves |
Width of grooves | Smooth bore
Depth of grooves |
Width of lands |
Muzzle velocity 460 f/s*
Max. range (horizontal) (limited by sight) 765 yds.
Rate of fire
Traverse on wheels: Right (max.) 28°
       Left (max.) 28°
Traverse on firing segments 360°
Elevation 23°
Depression 14°
Length of recoil none
Ammunition 8.8 cm R. Pz. B. Gr. 4312
Wt. of projectile 5 lbs., 13 ozs.

*Not verified.

German: p. 352.1 (August 1, 1945)

38 cm R. Sprgr. 4581: Rocket Projectile for Raketenwerfer 61

38 cm R. Sprgr. 4581: Rocket Projectile for Raketenwerfer 61

This projectile is fired from the Raketenwerfer 61 (see pages 38.3 and 38.4). It shows a radical departure from standard spin-stabilized rocket design by the use of insert splines at the after end of the motor body. These splines, fitting into the rifling of the projector liner, aid in giving an initial spin to the projectile.

The rocket consists of three main assemblies: the high explosive body, motor body, and nozzle assembly.

The high explosive body of two-piece welded construction is threaded internally at its after end to receive the motor body. The booster pocket and fuze adapter assembly is welded in position at the nose of the high explosive body. The bourrelet is located just behind the welded junction of the ogive and the cylindrical section.

The motor body is threaded externally to screw into the high explosive body and internally to receive the nozzle assembly. Both the explosive body and nozzle assembly are secured by means of two diametrically opposed set screws. Nine grooves for the splines are machined into the base of the periphery of the motor body. The high explosive body is filled with 270 pounds of the German explosive charge 13A, which is 50/50 poured amatol.

The 32 venturi holes in the nozzle plate are set at an angle of 14° to the axis of the rocket. In the center of the nozzle plate there is a threaded hole to receive the igniter primer for the rocket propellant.

A rear spacer ring welded to the nozzle plate aids in the positioning of the outer row of propellant charges.

SPECIFICATIONS

Caliber         38 cm (15 ins. approx.)
Total weight of rocket 761 lbs.
Overall length (not including fuze) 56.68 ins.
Diameter of bourrelet 14.94 ins.
Maximum range 6,179 yds.
Weight of explosive charge 270 lbs.
Weight of propellant charge 88.5 lbs.
Fuze Point detonating
Weapon from which fired Raketenwerfer 61

German: p. 354.2 (June 1, 1945)