Rocket Motor Case

Products > Energetics > Insensitive Munition Compliant Composite Case

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).


Key Features:

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.
Insensitive Munitions Case

Insensitive rocket motor case before (top) and after (bottom) bullet impact.

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.

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