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An ARM-FIRE device for a pyrotechnic system includes a first pyrotechnic, a second pyrotechnic, a passage extending between the first and second pyrotechnics, and an actuator/blocking device positioned between the first and second pyrotechnics. The first pyrotechnic is configured to be ignited by a

An ARM-FIRE device for a pyrotechnic system includes a first pyrotechnic, a second pyrotechnic, a passage extending between the first and second pyrotechnics, and an actuator/blocking device positioned between the first and second pyrotechnics. The first pyrotechnic is configured to be ignited by a heat source, and the second pyrotechnic is configured to be ignited by the first pyrotechnic in the FIRE arrangement. The actuator/blocking device includes a body configured to move between a first position in the SAFE arrangement and a second position in the FIRE arrangement, an aperture extending through the body, and an actuator. The aperture is offset from the passage in the first position of the body and is aligned with the passage in the second position of the body. The actuator is configured to move the body between the first and second positions. The first pyrotechnic, the second pyrotechnic, and the actuator/blocking device occupy a volume of approximately 49 cubic cm (3.0 cubic inches)or less.

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1. An ARM-FIRE device for a pyrotechnic system, comprising: a first pyrotechnic;a second pyrotechnic configured to be ignited by the first pyrotechnic; anda shutter mechanism disposed between the first and second pyrotechnics to selectively block the flow of ignited pyrotechnics, the shutter mechani

1. An ARM-FIRE device for a pyrotechnic system, comprising: a first pyrotechnic;a second pyrotechnic configured to be ignited by the first pyrotechnic; anda shutter mechanism disposed between the first and second pyrotechnics to selectively block the flow of ignited pyrotechnics, the shutter mechanism including: a base,a body linearly slidable with respect to the base in moving from a first position to a second position,the first position interrupting an ignition train from the first pyrotechnic to the second pyrotechnic, the second position of the body permitting access of the ignition train from the first pyrotechnic to the second pyrotechnic; andthe base includes a first hole defining a slot and the body comprises a sled having a protrusion slidably received in the slot of the base. 2. The device of claim 1 wherein the first pyrotechnic, the second pyrotechnic, and the shutter mechanism occupy a volume of approximately 3 cubic inches or less. 3. The device of claim 1 wherein the actuator comprises a shaped metal alloy wire actuator. 4. The device of claim 1, wherein the base includes a first hole and the body includes a second hole, the first hole being offset from second hole in the first position, the first hole being aligned with the second hole in the second position. 5. The device of claim 1 wherein the shutter mechanism further includes a cover coupled to the base, and the body positioned between the base and the cover. 6. The device of claim 5 wherein the body includes an aperture and the cover comprises an opening to be aligned with the aperture in the second position of the body. 7. The device of claim 1 wherein the shutter mechanism further includes a spring configured to bias the body toward the first position. 8. The device of claim 1 wherein the shutter mechanism further includes a latch configured to hold the body in the second position. 9. The device of claim 1, further comprising a cover coupled to the base, the cover having a first hole, the sled being disposed between the base and the cover, the sled includes a second hole with the first hole being offset from second hole in the first position, the first hole being aligned with the second hole in the second position. 10. The device of claim 9, wherein the actuator comprises a shaped metal alloy wire wrapped about the periphery of the sled, the wire contracting in response to an electric current to move the sled within the slot from the first position to the second position the wire elongating upon removal of the electric current to permit the sled to return from the second position to the first position, the shutter mechanism further including a return spring engaged with the protrusion of the sled to bias the sled back to the first position. 11. The device of claim 1, further comprising a membrane located between the shutter mechanism and the second pyrotechnic to separate the second pyrotechnic from the shutter mechanism to prevent the second pyrotechnic material from entering the shutter mechanism prior to ignition. 12. An ARM-FIRE device for a pyrotechnic system, comprising: a first pyrotechnic;a second pyrotechnic configured to be ignited by the first pyrotechnic; anda shutter mechanism between the first pyrotechnic and the second pyrotechnic, the shutter mechanism including a first hole and a second hole, the second hole being configured to move between a first position offset from the first hole and a second position aligned with the first hole, the shutter mechanism comprising: a base including the first hole defining a slot, anda body configured to move relative to the base, the body including the second hole and a protrusion received in the slot. 13. The device of claim 12, further comprising a cover including a third hole for alignment with the second hole. 14. The device of claim 12 wherein the shutter mechanism includes an actuator configured to move the body relative to the base. 15. The device of claim 14 wherein the actuator comprises a shaped metal alloy wire actuator. 16. A pyrotechnic system comprising: a pyrotechnic charge; andan initiator including a first pyrotechnic and a second pyrotechnic to define an ignition train between the initiator and the pyrotechnic charge; anda shutter mechanism disposed between the first and second pyrotechnics to interrupt the ignition train the shutter mechanism including:a base including a first hole;a body including a second hole, the body being linearly slidable with respect to the base in moving from a first position to a second position, the first and second holes being offset from one another in the first position to interrupt the ignition train from the first pyrotechnic to the second pyrotechnic, the first and second holes being aligned with one another in the second position of the body to permit access of the ignition train from the first pyrotechnic to the second pyrotechnic; andan actuator configured to move the body from the first position to the second position; andthe first hole of the base defines a slot and the body comprises a sled having a protrusion slidably received in the slot of the base. 17. The system of claim 16, further comprising a return spring to bias the body in the first position. 18. A method of selectively interrupting an ignition train in a pyrotechnic system between a first pyrotechnic and a second pyrotechnic, the method comprising: controlling an actuator to linearly slide a body having a first hole with respect to a base having a second hole from a first position in which the first and second holes are offset to a second position in which the first and second holes are aligned, the second hole of the base defines a slot and the body comprises a sled having a protrusion slidably received in the slot of the base. 19. The method of claim 18, further comprising biasing the body to return to the first position.