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Capacitive Discharge Initiator (CDI)

Invocon’s Remote Power Control (RPC) Remote Ground Support Equipment (RGSE) provides for power control and monitoring for Avionics or Flight Termination System (FTS) payloads. This includes system monitoring, power switching (e.g., internal/external, on/off), and battery maintenance as well as RS422 communications all through the vehicle’s UMBI(s). The rack is controlled remotely via direct Ethernet connection or through a fiber optic converter for extended range.

Key Specifications

Specification
Value
Output Channels
4 fully redundant
Timing Resolution
1 ms per channel
Run-Time After Trigger
4 hours
Capacitor Voltage Monitoring
Yes
SAFE/ARM Monitoring
Plug identification and state identification
Altitude Switch Monitoring
Open/close monitoring
Battery Support
Smart primary and rechargeable batteries
Power Supply
Single or dual power supply source voltage

Key Features

  • Four Fully Redundant Output Channels

    Four redundant pyrotechnic output channels with 1 ms timing resolution for precise sequencing of ordnance events.

  • Health and Status Monitoring

    Monitors altitude switches, SAFE/ARM plug identification, and SAFE/ARM state, providing pre-fire system verification.

  • Capacitor Voltage Monitoring

    Continuously monitors CDI capacitor charge voltage to confirm sufficient energy for reliable squib firing.

  • Command Trigger Function

    Command trigger capability available on all channels enables ground or flight computer command-initiated event activation.

  • Bad Umbilical Pull Protection

    Protects against inadvertent initiation caused by accidental or premature umbilical pull during ground operations.

  • Smart Battery Support

    Supports both smart primary and rechargeable battery configurations, as well as standard vehicle power.

Typical Applications

  • Rocket Stage Separation

    Fires separation pyrotechnics on a programmable timeline to achieve precise stage separation timing.

  • Payload Deployment

    Commands pyrotechnic bolt cutters or deployment mechanisms for payload release.

  • Engine Ignition

    Provides reliable squib ignition for solid rocket motors and liquid engine igniters.

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