USA As Represented by Secretary of the Navy

Robert A Koontz

Lee R Hardt

Donald L Burnett

Josiah S Garfield

Eric K Wooding

Que T BuiDang

Kenneth R Hayes

The disclosed embodiments are directed to enhancing insensitive munitions performance. Some of the embodiments employ an outgassing pad having unique geometrical configurations, compositions, and positioning. Other embodiments rely on using thermally-releasable components to foster billet expulsion. Additional embodiments combine both aspects into entire cook-off mitigation systems for insensitive munitions improvements.

Cook-off mitigation systems

Embodiments of the invention are directed to enhancing insensitive munitions performance. Some embodiments of the invention employ an outgassing pad having unique geometrical configurations and positioning. Other embodiments rely on using thermally-releasable components to foster billet expulsion. Additional embodiments combine both aspects into an entire cook-off mitigation system.

Cook-off mitigation systems using an uncanistered outgassing pad

An improved method of producing a controlled fragmentation warhead case by mbedding an expanded metal liner on the interior surface of a casing for a warhead or other ordnance device. The process of embedding an expanded metal liner into the casing during the forming of the casing produces a controlled fragmentation grid on the interior surface of the casing. The improved method of producing a controlled fragmentation warhead case is particularly suitable for weapon systems employing large, unitary warheads.

Method of producing a controlled fragmentation warhead case

Controlled fragmentation warhead case

A thermally activated case venting safety apparatus is used to minimize the otential for detonation of a warhead or other encased explosive when such item is subjected to excessive thermal environments. An aft end closure plate to a warhead casing is secured using an expandable snap ring with a temperature activated releasing mechanism. The snap ring is expanded using a caliper device with an adjustable slide assembly which adjust the snap ring to the required dimensions. An eutectic solder plug or similar plug is attached to the bottom base of the adjustable slide assembly and holds the snap ring in the expanded position. The plug will melt at a predetermined temperature and thus allow the expandable snap ring to retract. Once the snap ring has retracted, the closure plate will be ejected due to the internal case pressure and the warhead case will vent.

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Anchorage, AK, United States of America

Robert A Koontz