| Use: 40-mm A.P.-H.E. projectiles. |
| Over-all length (with gaine): 2 5/32 inches. |
| Over-all length (without gaine): 1 1/2 inches. |
| Maximum diameter: 1 7/32 inches. |
| Threaded length: 7/8 inch L.H. |
|
Construction: A cylindrical steel piece is threaded externally
and centrally drilled to pro-vide a recess to house and guide the
striker, inertia weight, and creep spring. It is threaded internally on
the forward end to take the gaine. The striker is housed in and secured to
the inertia weight by a copper shear pin. The inertia weight is a steel
cylinder which closely fits the inner opening of the fuze body and is held
in the rear-most position by a creep spring resting between the
explosive-train carrier and an annular groove in the forward end of the
inertia weight.
|
|
Operation: On firing, set-back causes the inertia weight to move
downward, breaking the shear wire and exposing the striker. Upon impact,
the striker and collar move against the creep spring and the firing pin
pierces the primer.
|
|
Figure 447 – 40-mm Base Fuze. |
