초록 ▼

An safe and arm apparatus is disclosed wherein the apparatus utilizes setback acceleration for in-bore safety and sustained in-bore acceleration to position various members to allow for subsequent alignment of the firing train at arm time. The apparatus includes a rotor that houses an explosive lead

An safe and arm apparatus is disclosed wherein the apparatus utilizes setback acceleration for in-bore safety and sustained in-bore acceleration to position various members to allow for subsequent alignment of the firing train at arm time. The apparatus includes a rotor that houses an explosive lead and having a side bore hole formed therein which selectively interrupts the initiating explosive train both in front of and after the explosive train lead. The explosive interface between a detonator and a lead is unimpeded when the bore hole is in-line with a second corresponding hole in a protective cover. The rotor is normally secured by a setback lock and a shear tab. Upon launching from a gun, an in-bore lock (in conjunction with a retaining collar) moves down at a low acceleration level to additionally secure the rotor out-of-line while the projectile is in the gun tube. The movement of the in-bore lock also removes an impact drive surface for a piston actuator on the rotor, which eliminates the possibility of an in-bore-arming in the event of an inadvertent firing of the piston actuator. During the period in the gun tube, the setback lock also swings down under a predetermined high acceleration and causes the setback lock to latch, leaving the in-bore lock and a shear/break-away tab holding the rotor. Once out of the gun tube, the in-bore lock releases, leaving the rotor free (except for the shear tab which is overcome by the piston actuator) and restoring the impact drive surface of the piston actuator on the rotor. The electrically activated piston actuator is positioned to rotate and lock the rotor in line such that the detonator in the housing, the side bore hole in the rotor, the explosive lead in the rotor, and the bore hole in the cover are aligned for target initiated detonation. The piston actuator is controlled by an electronics assembly.

대표청구항 ▼

A method of arming an explosive projectile, comprising the steps of: (a) initially inhibiting the rotation of a rotor with a setback lock device; (b) biasing said setback lock device into a first position which inhibits rotation of said rotor and into a second position out of the path of said rotor

A method of arming an explosive projectile, comprising the steps of: (a) initially inhibiting the rotation of a rotor with a setback lock device; (b) biasing said setback lock device into a first position which inhibits rotation of said rotor and into a second position out of the path of said rotor upon a predetermined acceleration of the projectile; (c) striking a surface of said rotor with a piston actuator to rotate said rotor so as to bring an explosive train in-line after the predetermined acceleration of the projectile occurs, wherein the rotation of said rotor orients a detonator in-line with an explosive lead through a side bore in said rotor; and (d) aligning said explosive lead in-line by rotating said rotor to arm the projectile.