(Ordinary Mod 1) 14-cm (140-mm) (5.5-Inch) Common Capped14-cm (140-mm) (5.5-Inch) Smoke Projectile
Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition
Chapter 5 - Section 1
NAVY PROJECTILES
14-cm (140-mm) (5.5-Inch) Illuminating Projectile
Weight of filled projectile (without fuze): 87.5 pounds.
Weight of empty projectile: 67.46 pounds (appromixmately).

Weight stamped on rotating band (sample): No data (varies with individual projectiles).

Length of projectile (without fuze): 20.3 inches.
Diameter at bourrelet: 5.49 inches (139.5 mm).
Distance from base to rotating band: 0.59 inch.
Width of rotating band:
Forward: 1.11 inches.
Space: 0.38 inch.
Aft: 1.09 inches.
Radius of ogive: No data.
Filling:
Primary ejection charge (black powder): 100 grams.
Secondary ejection charge (black powder): 41 grams.
Initiating pellet, relay train, and delay are black powder.

The ignition compound for the illuminant is a mixture of potassium nitrate, iron oxide, alu-minum, sulphur, and wax.

The illuminant is a mixture of barium nitrate, magnesium, and wax.
Weight: 31 pounds.
Fuzing: Type 91 mechanical time fuze.
Weapon in which used: Type 3d year 14-cm/50 gun.

Operation: At the end of the time set, the mechanical time fuze fires the initiating pel-let. The relay train transmits the flash to the base of the primary ejection charge contai-ner and ignites the charge. The primary ejection charge expels the canister containing the illuminating charge and its parachute, and also ignites the delay element. A short time after the canister is ejected from the projectile body, the delay element fires the secondary ejection charge which expels the illuminating charge and parachutes and igni-tes the illuminant. Two parachutes, a large one above a small one, suspend the illuminat-ing unit.

Burning time, not determined.

Figure 404 – 14-cm Illuminating.

(Ordinary Mod 1) 14-cm (140-mm) (5.5-Inch) Common Capped14-cm (140-mm) (5.5-Inch) Smoke Projectile