Insensitive Munition (IM) Compliant Composite Motor Case
PSI’s IM-compliant composite case mitigates thermal and high energy impact threats for solid rocket motor (SRM) systems
Capability Description: PSI’s passive case design controllably fractures open, removing pressure vessel confinement, before propellant ignition during Slow Cookoff (SCO), Bullet Impact (BI), and Fragment Impact (FI).
The passive case design employs two key features to reduce the response from thermal and high energy impacts threats.
- Impact induces thermal & mechanical degradation in case material, venting the case prior to propellant ignition
- Heat flux from a SCO event induces reactions within the case material, enhancing thermal and mechanical degradation, and vents the case below propellant ignition temperature.
Benefit to Warfighter/Customer:
The insensitive rocket motor case provides a secondary level of protection to warfighters by reducing the explosive response of rockets during bullet impact or slow cook-off.