| DATA: |
| Over-all length: 49.1 inches. |
| Diameter: 8.27 inches. |
| Total weight: 241.3 pounds. |
| Propellant weight: 39.5 pounds. |
| Length of grain: 21.67 inches. |
| Diameter of grain: 2.46 inches. |
| Type of filling: Amatol 40/60. |
| Weight of filling: 22.4 pounds. |
| Fuzing: Z 23 LA 0.15; P.D.F. with inst. or delay setting. Hbgr.Z.
35 K, S/30 M.T.F. |
|
DESCRIPTION. This
is a streamlined aircraft rocket projectile, consisting of an H.E. shell,
externally threaded at the base to screw into the rocket motor and at the
nose to recei-ve a ballistic cap. (See fig. 215.) A booster container is
threaded into the nose of the shell and receives the nose fuze. A wooden
actuating rod separates the fuze from the tip of the ballistic cap. |
|
The motor body is a cylindrical steel body machined
externally to form fore and aft bour-relets. A venturi assembly, drilled
to form 22 jets, threads into the base of the motor. The jets are inclined
at an angle of 16° to impart a rotary motion to the rocket in flight. An
electric squib is threaded into the center of the venturi assembly. The
propellant charge consists of 7 single-perforated grains supported by a
metal grid at the after end. A ringshaped black powder igniter is placed
at the base of the charge and a second igni-ter is located at the forward
end of the charge. These two ignition charges are connec-ted by a length of
quickmatch in a celluloid tube, which passes through the perforation of
the central propellant grain. |
| REMARKS. 1. The German designation
for this round is "21 cm Wgr. 42 Spr." |
| 2. The round is painted green over-all. |
|
Figure 215 – 21-cm Aircraft Rocket |
