| 摘要 |
A fuse for an explosive projectile comprises a forward primer and a rearward detonator that is exploded by the primer and that communicates with the primer through a firing passageway. The detonator and a valve that closes the passageway are mounted as an assembly for conjoint sliding movement from a forward position in which the detonator is outside the explosive charge of the projectile, to a rearward position in which the detonator is disposed within that explosive charge, under the influence of the inertia of the assembly when the projectile is launched and is accelerating. Thereafter, the deceleration of the projectile opens the valve, so that the projectile is armed only after it is well away from the launching site. |
