According to an aspect of the invention, there is provided a fuze arming system for a submunition, comprising: a first stage, arranged to detect launch of the submunition and its associated carrier; a second stage, arranged to detect expulsion of the submunition from the carrier, and to at least partially arm a submunition fuze based on such detection; wherein the second stage is unable to at least partially arm the submunition fuze without the first stage detecting launch of the submunition and its associated carrier.

An enhanced breaching round and techniques for manufacturing such are provided. A breaching round includes a case defining a volume, a propellant disposed in the volume of the case, and a projectile coupled to the case. The projectile may include a body disposed at least partially within the case and configured to enclose the propellant within the volume of the case. The body may be formed of a castable eutectic mixture configured to be melted and cast, wherein the body is configured to break into a plurality of fragments upon impact with a target. A cavity may be disposed between the proximal end and the distal end of the body, and a reactive material disposed in the cavity, the reactive material comprising at least one oxidizer and at least one fuel.

A stand-off breaching device (20) for breaching a barrier, comprising a housing (21), an explosive main charge (24) having a barrier-end (25) and a rear-end (26), a detonator (29), and means for initiating the detonator (27) when the explosive main charge (24) is at a preselected distance from a barrier. The detonator (29) is configured to detonate explosive main charge (24) at the rear-end (26) such that the resultant detonation wave propagates through the explosive main charge (24) towards the barrier-end (25) and the barrier being breached. This configuration provides more efficient transfer of explosively generated overpressure towards a barrier, thereby enabling the use of explosive main charges (24) with reduced mass, and the associated improvements in operator safety. The breaching device (20) is particularly suited to use in door breaching operations.

According to a first aspect of the invention, there is provided an object for moving through a fluid, the object comprising: an outer housing, arranged to be exposed to a hydrostatic pressure exerted by the fluid; a strain gauge, arranged to obtain an indication of the hydrostatic pressure, wherein a first part of the strain gauge is arranged to be in contact with the outer housing, such that the strain gauge is arranged to obtain an indication of the hydrostatic pressure by obtaining an indication of the strain on the housing.

This invention describes embodiments of door breaching grenades (100,100a,100b,100c,100d). Each grenade comprises a projectile (101,101a,101b,101c,101d) coupled to a propulsion cartridge (105); each projectile comprises a shell (110), a body member (140) and an ogive (180). A safe-and-arm mechanism (150) is located in the body member. A seat member (160) and a plunger (166) are assembled on a forward face of the body member so that a leading end of the plunger is in contact with an inside tip surface of the ogive, or a hollow guide member (184) is integrally formed with an inside tip surface of the ogive. In the armed state, upon impacting on a door/barricade (5), the plunger or hollow guide/sleeve impinges on a detonator pin (164), which then sets off a chain of explosive charges (152, 120, 122) whilst the projectile is still outside the door/barricade. The grenade is made substantially of polymer parts.

Hardened target sensors and systems are described herein. An example system includes a projectile defining an ogive, a body, and a base. The body of the projectile is arranged between the ogive and the base. The system includes a sensor assembly including a nose member and a plurality of strain gauges. The nose member defines a nose portion, a shaft, portion, and a threaded portion. The strain gauges are attached to the shaft portion. The system includes a shroud member, which is mechanically coupled with the sensor assembly and the body. The system further includes a smart fuze arranged within the body. The smart fuze is operably coupled to the strain gauges. The strain gauges measure the compression/tension of the shaft portion, which is part of the nose member. The load measured by the strain gauges can be used to detect hardened target layers and/or voids.

A bullet projectile is described with an internal magnetic hammer providing electromagnetic induction upon impact.

A munition has preformed fragments at two radial distances from a center axis, for instance having inner fragments in or within or adjacent to a casing, and outer fragments outside of the casing. The outer fragments may be between the casing and an outer enclosure that surrounds the casing. The casing may be part of a warhead, and may be a penetrator casing. The fragments at different radial distances from the center may have different sizes, different materials, and/or different shapes. The use of fragments at different radial distances aids in providing enhanced fragmentation effects, such as controlling dispersal of fragments to limit fragmentation effects and/or provide more even distribution of fragments.

A munition, such as a warhead, includes a penetrator casing for penetrating hard targets, such as a fortification or reinforced building or other structure, with the penetrator casing having reduced-thickness portions. The reduced-thickness portions provide weak points to the casing that facilitate the casing being transformed into fragments of a desired size/quantity when an explosive within the casing is detonated after the penetration occurs, thus enhancing the effectiveness of the munition. In addition, the warhead may have lethality-enhancing materials, such as additional fragments and/or energetic materials, at the reduced-thickness portions of the penetrator casing. The reduced-thickness portions may be holes, such as longitudinal holes, in the casing, or may be grooves on an inner and/or outer surface of the casing. The munition may be a dual-use munition, with the explosive able to be detonated at a burst height for use of the warhead as a non-penetrating area fragmentation weapon.

A munition may include a warhead, such as a penetrator warhead, enclosed in airframe. The airframe may enable connection to standard mountings, and/or to standard nose kits or tail kits. The airframe may have preformed fragments in it, packed between the airframe and the warhead. The preformed fragments may be loose, may be packed in a potting material, or may be in flexible bags. The fragments may enhance performance of the munition. The warhead may also contain preformed fragments.