Description
This is a Japanese Navy mechanical impact tail fuze. it is used in 1/3 kg antiaircraft bomb. The fuze is aluminum.
The fuze body houses an inertia striker which is secured by the arming vane assembly which protrudes from the side of the body. The arming vanes are cup-shaped. A locating pin lines the hole in the striker up with the arming vane hole in the tail assembly for ease in assembly. A spring keeps the striker away from the primer flash cap after the arming vane assembly falls away. The tail assembly hides the fuze to a great extent.
Functioning
The arming vane assembly unscrews and falls away after the bomb is released from the container. The spring holds the striker away from the primer while the bomb is falling. On impact, inertia causes the striker to move downward against the spring. The striker pierces the primer and the exploder system is set into operation.
Hazardous Components
Lead azide primer, cyclonite detonator and TNT. Cyclonite main filler.
Physical Data
Length, overall - 3.37 in, 85.6 mm (including tail extension)
Width, overall - 1.3 in, 33 mm
See Also
Bomb, 1/3 kg AA, Type 2
Source(s)
OP 1667, Japanese Explosive Ordnance, Volume 1 (1946)
USNBD - Japanese Bombs & Fuzes (1944)
TM-E9-1984, Enemy Bombs and Fuzes, Section VII, Japanese Fuzes (1942)
