From the collection of Mr. D Durham , a NASA engineer that worked on the Apollo program in the 1960’s, Durham developed Exploding Foil Initiator designs EFI’s. When a spacecraft is in space and needs to release / detach certain components it does this with a series of systems that activate a charge. This small controlled explosion is a series of components ‘train’. One may release an electrical charge that activates the train to reach the area of ignition. It is a rather complex safety system and Mr. Durham worked on several approved and used components for the mission.

The Apollo Standard Initiator (ASI), specifically the Space Ordnance Systems (SOS) Part NumberSO1-266-7, was an early, electrically-initiated pyrotechnic device used in the Apollo program. It was designed to convert an electrical signal into a pyrotechnic action to trigger various spacecraft functions. 

The ASI was a fundamental component of the Apollo spacecraft's pyrotechnic systems. It was designed to initiate other explosive or pyrotechnic events, such as severing cables, opening/closing valves, or separating structural components, by producing a high-temperature flame, hot particles, and gas pressure.

Measures: 3” H x 2.25” x 1” D