An ammunition cartridge comprised of a projectile inserted in, and mechanically connected to, a metal cartridge case assembly having a propulsion chamber and a base, and an energetic propellant disposed in the propulsion chamber, includes a base plug in which is mounted an igniter with an energetic primer. During manufacture of the cartridge, a fusible support ring is incorporated into a metal cavity. The cartridge base includes a cavity allowing the fusible material to solidify at ambient temperatures. When exposed to heat from an external fire, the fusible support plug liquefies losing its strength and subsequently, when a propellant or primer off-gasses or auto-ignites the pressure from the reaction ejects a metal plug or lid from the cartridge case base, creating a void that allows the propellant and primer to combust in an unconfined space.

An ammunition cartridge comprised of a projectile inserted in, and mechanically connected to, a metal cartridge case assembly having a propulsion chamber and a base, and an energetic propellant disposed in the propulsion chamber, includes a base plug in which is mounted an igniter with an energetic primer. During manufacture of the cartridge, a fusible support ring is incorporated into a metal cavity. The cartridge base includes a cavity allowing the fusible material to solidify at ambient temperatures. When exposed to heat from an external fire, the fusible support plug liquefies losing its strength and subsequently, when a propellant or primer off-gasses or auto-ignites the pressure from the reaction ejects a metal plug or lid from the cartridge case base, creating a void that allows the propellant and primer to combust in an unconfined space.

A supply system supplies an explosives material and comprises an explosives material delivery mechanism, a bin, a first outlet, a first removable cover, a port and an operation tool. The bin has an upper end, a lower end, and an interior volume that provides a first compartment for storing the explosives material. The first compartment has a corresponding lower end. The first outlet at the lower end of the first compartment feeds the explosives material from the first compartment to the explosive material delivery mechanism. The first removable cover is placed on a second outlet at the lower end of the compartment. The port is at the upper end of the bin by which the explosives material is loadable into the first compartment. The operation tool allows installation and removal of the first removable cover by way of the port without requiring any personnel to enter into the bin.

A penetration device including a casing, a propellant positioned in the casing, and a flyer plate. The flyer plate is coupled to the casing and adjacent to the propellant. The flyer plate includes a center portion having a substantially constant first thickness and includes a peripheral portion around the center portion and defining an edge. The peripheral portion tapers from the first thickness to a second thickness at the edge, where the second thickness is less than the first thickness.

A release mechanism includes a frame with an interior. The release mechanism also includes a prestrained element coupled to the interior of the frame. The prestrained element creates a seal with the frame. The prestrained element is notched in one or more regions. The prestrained element is configured to fracture when heated to a predetermined temperature allowing the interior to open. The fracture is based on the notched regions of the prestrained element such that separation initiates within the notched regions. The remaining regions of the prestrained element unfractured. The shape memory alloy element can include one or more of a nickel-titanium alloy, a titanium-nickel alloy, a copper-zinc-aluminum alloy, a copper aluminum nickel alloy, and a nickel titanium hafnium alloy. Heating of the shape memory alloy element causes a stress in the shape memory alloy that causes fracturing of the prestrained alloy when sufficient heating has been achieved.

A release mechanism includes a frame with an interior. The release mechanism also includes a prestrained element coupled to the interior of the frame. The prestrained element creates a seal with the frame. The prestrained element is notched in one or more regions. The prestrained element is configured to fracture when heated to a predetermined temperature allowing the interior to open. The fracture is based on the notched regions of the prestrained element such that separation initiates within the notched regions. The remaining regions of the prestrained element unfractured. The shape memory alloy element can include one or more of a nickel-titanium alloy, a titanium-nickel alloy, a copper-zinc-aluminum alloy, a copper aluminum nickel alloy, and a nickel titanium hafnium alloy. Heating of the shape memory alloy element causes a stress in the shape memory alloy that causes fracturing of the prestrained alloy when sufficient heating has been achieved.

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.

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.

A fuse housing structure including: a fuse housing coupled to a projectile and having a first surface exposed to the outside, a second surface hidden to the interior of the projectile, and a through-hole portion formed between the first surface and the second surface; and a position part deformed by an external force, in the state of being inserted into the through-hole portion, in such a manner as to be coupled to the fuse housing, the position part including a large diameter portion having a first outer diameter, an outer diameter reduction portion connected to one side of the large diameter portion, and a deformation portion protruding from the other side of the large diameter portion in such a manner as to be inserted into the through-hole portion by means of the deformation caused by the external force.

A fuse housing structure including: a fuse housing coupled to a projectile and having a first surface exposed to the outside, a second surface hidden to the interior of the projectile, and a through-hole portion formed between the first surface and the second surface; and a position part deformed by an external force, in the state of being inserted into the through-hole portion, in such a manner as to be coupled to the fuse housing, the position part including a large diameter portion having a first outer diameter, an outer diameter reduction portion connected to one side of the large diameter portion, and a deformation portion protruding from the other side of the large diameter portion in such a manner as to be inserted into the through-hole portion by means of the deformation caused by the external force.