Invocon’s Solid State Initiator (SSI) provides highly reliable and safe initiation capabilities for energetic devices (squibs). It is a solid state replacement for Invocon’s historic work horse – the Capacitive Discharge Initiator (CDI). The SSI replaces the mechanical devices of the CDI with solid state electronics while maintaining the same levels of protection for fail-safe activation of engines and pyrotechnic functions required by rockets and spacecraft.
The SSI maximizes flexibility in controlling event initiation by using a combination of timing, external commands, and altitude. Each channel is fully programmable with automated error checking at multiple levels. It also features Invocon’s Squib Sense ™ fire path analysis capability to ensure that all stages in each fire path are ready for action whether the vehicle is armed or safe.
Key SSI Features:
- Four fully redundant (or eight non-redundant) programmable output channels
- Redundant input triggers for starting the event timers
- 1 millisecond timing resolution per channel on timed functions
- Optional external command triggers for all channels
- Optical isolation between fire paths and control electronics
- Size, weight, and power: 6.25 x 6.25 x 1.78 in, 3.5 lbs
- 77% reduction in volume from the legacy CDI
- 75% reduction in mass from the legacy CDI
- Power options include:
- Single or redundant smart rechargeable batteries
- Single or redundant smart primary batteries
- Standard vehicle power: 24 to 36 VDC
- Programmable features:
- Any combination of channel firing sequences
- Programmable “safe” altitudes for each channel
- Logic controlled event start windows
- Rejects illegal program inputs
- Selectable sequence start – Lanyard pull, alternate trigger input, or logic command
