Bullet trap systems receive projectiles fired thereinto and allow for the recovery of the projectiles. Specifically, the bullet trap systems include strategically-placed support structures for ensuring that the projectile entry path remains unblocked and further includes sidewalls in the projectile containment units to prevent traveling of projectiles within the projectile containment units to prevent or minimize damage within the projectile containment units. Moreover, one or more accessibility hatches may be provided to allow individuals to gain access to the interior of the bullet trap systems.

Bullet trap systems receive projectiles fired thereinto and allow for the recovery of the projectiles. Specifically, the bullet trap systems include strategically-placed support structures for ensuring that the projectile entry path remains unblocked and further includes sidewalls in the projectile containment units to prevent traveling of projectiles within the projectile containment units to prevent or minimize damage within the projectile containment units. Moreover, one or more accessibility hatches may be provided to allow individuals to gain access to the interior of the bullet trap systems.

A lead collection system and method for reducing the incidence of equipment failures, equipment breakages, and/or safety hazards is provided. The lead collection system may include one or more augers that carry lead to a lead containment barrel. The auger(s) may be equipped with a specialized shear coupling designed such that the shear coupling breaks and stops auger movement before the auger may break. The auger(s) may also be equipped with one or more rotational sensors to detect actual shaft speed and compare it to the inputted speed, and cause a system error if a difference is detected. A lead containment barrel may also be provided, with an ultrasonic sensor for detecting lead fill in the barrel.

A lead collection system and method for reducing the incidence of equipment failures, equipment breakages, and/or safety hazards is provided. The lead collection system may include one or more augers that carry lead to a lead containment barrel. The auger(s) may be equipped with a specialized shear coupling designed such that the shear coupling breaks and stops auger movement before the auger may break. The auger(s) may also be equipped with one or more rotational sensors to detect actual shaft speed and compare it to the inputted speed, and cause a system error if a difference is detected. A lead containment barrel may also be provided, with an ultrasonic sensor for detecting lead fill in the barrel.

This disclosure is directed to an improved ballistic concrete barrier for stopping projectiles with a kinetic energy of between about 1.0 kJ (750 foot-pounds) and 20.3 kJ (15,000 foot-pounds) in between about 3 inches and 10 inches. In one embodiment, the ballistic concrete barrier comprises (a) about 1 part by mass Portland cement; (b) about 0.5 to 1.5 part by mass fine aggregate; (c) about 0.005 to 0.15 part by mass fiber; (d) about 0.005 to 0.05 part by mass calcium phosphate; (e) about 0.005 to 0.05 part by mass aluminum hydroxide; and (f) about 0.0005 to 0.05 part by mass air entrainment additive, such that the ballistic concrete barrier is capable of stopping a fifty caliber bullet in less than 10 inches from a point of entry into the barrier.

This disclosure is directed to an improved ballistic concrete barrier for stopping projectiles with a kinetic energy of between about 1.0 kJ (750 foot-pounds) and 20.3 kJ (15,000 foot-pounds) in between about 3 inches and 10 inches. In one embodiment, the ballistic concrete barrier comprises (a) about 1 part by mass Portland cement; (b) about 0.5 to 1.5 part by mass fine aggregate; (c) about 0.005 to 0.15 part by mass fiber; (d) about 0.005 to 0.05 part by mass calcium phosphate; (e) about 0.005 to 0.05 part by mass aluminum hydroxide; and (f) about 0.0005 to 0.05 part by mass air entrainment additive, such that the ballistic concrete barrier is capable of stopping a fifty caliber bullet in less than 10 inches from a point of entry into the barrier.

An arena test system for characterizing fragments from a warhead. An entry panel and an exit panel are arranged in a wedge configuration with a wedge-shaped air space between them. Fragments are imaged as they pass through this wedge. A soft catch box is located behind the exit panel such that fragments that pass through the exit panel enter the soft catch box and are decelerated within the soft catch box.

The invention relates to a slat arrangement for redirecting the trajectory of a bullet. The slat arrangement has a plurality of elongated steel slats, and each elongated steel slat has a longitudinal front edge and a longitudinal back edge stretching between a first end and a second end. The slat arrangement also has a support structure for supporting the plurality of steel slats. The steel slats are positioned in a louver-like fashion for changing the direction of a bullet following a trajectory along the normal of the slat arrangement. The support structure is connected to each steel slat at the back edge of the steel slat and between the first end and the second end of the steel slat.

The invention relates to a slat arrangement for redirecting the trajectory of a bullet. The slat arrangement has a plurality of elongated steel slats, and each elongated steel slat has a longitudinal front edge and a longitudinal back edge stretching between a first end and a second end. The slat arrangement also has a support structure for supporting the plurality of steel slats. The steel slats are positioned in a louver-like fashion for changing the direction of a bullet following a trajectory along the normal of the slat arrangement. The support structure is connected to each steel slat at the back edge of the steel slat and between the first end and the second end of the steel slat.

A bullet collecting robot comprises a bullet collecting device, a travel driving mechanism, and a controller. The bullet collecting device comprises a collection bin including a bullet accommodating cavity and a collection opening in communication with the bullet accommodating cavity, a friction roller provided at the collection opening, and a collection driving member connected with the friction roller. The travel driving mechanism is configured to drive the bullet collecting device to move. The controller is connected in communication with the collection driving member and the travel driving mechanism, and is configured to control the collection driving member and the travel driving mechanism.