Description
The T156 is a modification of the Artillery Fuze M68, without the tracer and with the retaining spring holding the firing pin block. Also the safety washer is 0.02 inch rather than 0.04 inch thick as in the M68.
Functioning
The retaining spring, which is slotted and fits around the neck of the firing-pin block, holds the firing-pin block in a safe position, until the spring is removed by the pull ring before affixing the motor to the racket head. The expansion plug acts to hold the spring in place during shipment.
On impact of the rocket, the firing-pin block is forced down by inertia on the safety washer, a thin aluminum disc, bending the washer, and striking the primer. The primer sets off the delay pellet (0.01-second) and then the detonator, which, in turn, explodes the booster charge of tetryl.
Hazardous Components
No information about hazardous components.
See Also
Source(s)
OP 1664, Volume 1 - US Explosive Ordnance (1947)
