An instrumentation article is provided for removably attaching to an ammunition round in a gun chamber and connecting to a cable that extends through the chamber. The cable provides tensile pull and signal communication through the chamber. The article has a longitudinal axis that corresponds to the chamber. The article includes a cap structure, an electronics package, a grip assembly, a lock mechanism and a release device. The cap structure connects to the cable. The electronics package provides electrical power and attaches to the cap structure for communication with the round. The grip assembly attaches to the round. The release device connects the electronics package to the lock mechanism. The lock mechanism is disposed between the release device and the grip assembly and rotates in first and second directions along the axis. The lock mechanism latches the claw assembly to the round by manual rotation in the first direction. The lock mechanism withdraws the grip assembly from the round by automatic rotation in the second direction. The release device unlatches the lock mechanism.

A system and method for determining a discharge event of a firearm is provided. An event detection module receives (i) acceleration input signals including a first acceleration input signal along a first axis, a second acceleration input signal along a second axis and a third acceleration input signal along a third axis; and (ii) rotation input signals including a first rotation input signal around the first axis, a second rotation input signal around the second axis and a third rotation input signal around the third axis. An acceleration vector magnitude is calculated from the acceleration signals. The acceleration vector magnitude is compared to a threshold acceleration. A sample event candidate is assigned to the acceleration vector magnitude based on the comparing. The sample event candidate comprises the acceleration input signals and the rotation input signals for a predetermined duration of time.

A system and method for determining a discharge event of a firearm is provided. An event detection module receives (i) acceleration input signals including a first acceleration input signal along a first axis, a second acceleration input signal along a second axis and a third acceleration input signal along a third axis; and (ii) rotation input signals including a first rotation input signal around the first axis, a second rotation input signal around the second axis and a third rotation input signal around the third axis. An acceleration vector magnitude is calculated from the acceleration signals. The acceleration vector magnitude is compared to a threshold acceleration. A sample event candidate is assigned to the acceleration vector magnitude based on the comparing. The sample event candidate comprises the acceleration input signals and the rotation input signals for a predetermined duration of time.

A system and method for determining a discharge event of a firearm includes receiving, by an event detection module, acceleration input signals and rotation input signals. An acceleration vector magnitude is calculated from the acceleration signals. The acceleration vector magnitude is compared to a threshold acceleration. A sample event candidate is assigned to the acceleration vector magnitude based on the comparing. The sample event candidate comprises the acceleration input signals and the rotation input signals for a predetermined duration of time. The sample event candidate is received at a machine learning module. Characteristics of the discharge event detected are determined including ammunition type based on the acceleration and rotation input signals in the sample event candidate.

An ammunition monitoring apparatus of the present disclosure includes at least one object-position detection sensor and a controller. The at least one object-position detection sensor is installed near a shell or charge route to face at least one set area and to output position information of each shell or charge in the at least one set area. The controller is configured to determine whether a position range occupied by the shell or the charge in the at least one set area exceeds an allowable position range, based on the position information received from the at least one object-position detection sensor, and to output an alert signal indicating a poor position upon determining that the position range occupied by the shell or the charge in the at least one set area exceeds the allowable position range.

A system, device, and method for measuring the temperature of a chambered projectile within a firearm are provided. A test ammunition round may include a projectile, a sleeve, and a case including a first end coupled to sleeve, and a second end coupled to the projectile. A thermocouple may be located within the projectile, and an electronic coupler may be coupled to the thermocouple, and extends through the case and the sleeve and exits the sleeve through a slot for coupling to a data acquisition system.

A system, device, and method for measuring the temperature of a chambered projectile within a firearm are provided. A test ammunition round may include a projectile, a sleeve, and a case including a first end coupled to sleeve, and a second end coupled to the projectile. A thermocouple may be located within the projectile, and an electronic coupler may be coupled to the thermocouple, and extends through the case and the sleeve and exits the sleeve through a slot for coupling to a data acquisition system.

A shock testing machine including a platform for holding an item to be shock tested; a brake engaging member separately provided from the platform and movable relative to the platform. The brake engaging member contacts the platform when the platform is moving other than in a braking phase. One or more rails movably supporting the platform and the brake engaging member. A stop configured to stop the brake engaging member from moving in a testing direction at a location while allowing the platform to continue moving past the predetermined location. A brake configured to decelerate the platform after the brake engaging member is stopped by the stop. The brake being movable relative to the platform and the brake engaging member. The brake engaging member is between the platform and the brake and the brake contacting the brake engagement member when the platform is moving in the braking phase.

A system and method for measuring, characterizing, and making recommendations for improving the performance of a shooter and one or more associated firearms. A data collection environment comprises an operator device and a server and data management module configured to receive and transmit one or more data sets over a network. A rig, which may be configured with sensors, may comprise a base assembly, a stock assembly, a grip/trigger assembly, a forend assembly a remote trigger assembly, and a safety lanyard assembly.

A method for determining a performance metric based on a discharge event of a firearm is provided. A plurality of first input signals over a sample window of time from a first inertial measurement unit (IMU) configured on the first firearm are received by a first event detection module associated with the first firearm of a first user. An occurrence of a first shot discharge of the first firearm at a first time based on the plurality of first input signals is identified by the first event detection module. An occurrence of a second shot discharge of the first firearm at a second time based on the plurality of first input signals is identified by the first event detection module. A first split time is determined for the first user based on a difference between the first and second times.