Description
The fuze is essentially a Mechanical Impact Fuze Mk 221 with an external protective Ixd tie-shaped casing of aluminum, a vane extension shaft, and 16 vanes instead of four. This easing screws onto the fuze body and is secured by two lock screws. The lower end of the vane shaft has a battened surface and tits into a slot in the top of the fuze cap. which is Attached by screws to the pinion carrier. The fuze has a delay element in the delay carrier similar to the Mk 221; and a celluloid window in the protective casing permits inspection of the fuze to determine whether or not it is in the armed condition.
The central spindle in this fuze does not telescope, but the collar on the central spindle which supports the hammer carrier is held by a shear wire which breaks on impact as the cap, vane carrier, and striker move forward under the influence of inertia.
The delay element consists of a primer, a delay pellet of meal “D” black powder, and a special detonator of fulminate of mercury mixture; and the auxiliary booster lead-in, booster lead-in, and booster consist of tetryl.
The moving parts housing the firing train are held in the fuze by three locking screws.
Functioning
No information about functioning.
Hazardous Components
No information about hazardous components.
See Also
Source(s)
MIL-HDBK-146, Fuze Catalog (1982)
OP 1664, Volume 2 - US Explosive Ordnance (1947)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)
