Rocket Motor Igniter


How It Works

A Rocket Motor Igniter provides the necessary heat source to ignite rocket engines. This igniter utilizes an electrical input stimulus that ignites an Electro-Explosive Device (EED), which in turn ignites a propellant grain. The propellant grain is designed to sustain a controlled burn to emit the necessary heat and hot particles for sufficient time to reliably ignite a rocket motor. We can tailor the burn duration to meet performance specification requirements, or they can be customized to burn for a specified period of time, based on the application. We have manufactured millions of igniters which have proven highly effective in a diverse set of applications.

Interested in our Rocket Motor Igniter?

We would love to hear about your program and how we may help.



RMIs are used to ignite solid rocket motors or liquid fueled rocket engines.


Our igniters are used on multiple missile and space vehicle platforms, including:

  • Delta IV, Main Engine (RS-68) Igniter
  • Delta IV, Gas Generator Igniter (RS-68)
  • Antares (Taurus II), Main Engine (AJ26-62)


  • All-Fire
    4.0 amperes for 20 milliseconds
  • Operating Temperature
    -20°F to +160°C
  • Applicable Specifications
    Qualified to MIL-STD-1576
    Initiator qualified to MIL-I-23659
  • Output
    Initiation Delay: 70 milliseconds, maximum
    Action Time: 2.0 seconds, minimum
    Plume Length: 12 inches, minimum
    Caloric Output Rate: 36,400 calories per second, minimum


Motor Igniter Technical