Abstract: According to an aspect of the invention, there is provided a communication system for communicating between a ranged weapon and a projectile for that ranged weapon, the system comprising: a transmitter associated with the ranged weapon, the transmitter being arranged to encode data to be transmitted to the projectile on an electromagnetic carrier wave, and to transmit that electromagnetic carrier wave to the projectile; a receiver associated with the projectile, the receiver being arranged to receive the electromagnetic carrier wave, and to decode data encoded in the electromagnetic carrier wave to retrieve that data, the data being usable in the activation of a fuse of the projectile.

Abstract: A device is provided for recording transverse acceleration of a projectile longitudinally traveling along a barrel. Within the projectile, the device includes a base, a cantilever beam, a stylus and a medium. The beam longitudinally extends at a first end from the base. The stylus connects to a second end of the beam, being longitudinally opposite from the first end. The medium is rigidly fixed relative to the base and indicates transverse deflection extent of the second end onto the medium. The transverse deflection extent can be vertically perpendicular to the beam, and the stylus can permit deflection that is horizontally perpendicular to the beam.

Abstract: Electronics for a shock-hardened device, in particular a data recorder, incorporating non-volatile memory. The device has the functional elements: a signal conditioning circuit, an oscillator, an analog-to-digital converter (ADC), a field programmable gate array (FPGA), a trigger, and a non-volatile memory incorporating both electrically erasable programmable read only memory (EEPROM) and fast static random access memory (SRAM). As a recorder, the electronics enable efficient and reliable data recording in extreme shock environments, e.g., those involving dynamic testing of weapons such as target penetrating bombs or dual-stage warheads. It also provides for data retention upon loss or shutdown of power to the unit and yields high MTBF (mean time between failure) figures in more benign environments.

Abstract: A instrument and method for measuring archery tackle performance is disclosed. A low power, electronics measurement unit attached onto or mounted internal to a bow in communication with a sensor which detects a signal from an external trigger mechanism mounted onto or internal to an arrow shaft for the purposes of measuring arrow velocity or collecting data indicative of arrow position. The statistical parameters of the collected data may then be used to determine and improve archery tackle performance in any shooting situation.

Abstract: An electromagnet sensing device which detects the first axial motion of a ssile relative to its launcher to provide timing information and indicate when the missile first moves axially.

Abstract: An apparatus for measuring velocity of a bullet is shown. A portable clamping device securely holds the barrel of a gun in position during firing. A bullet fired from the gun is projected through two openings located a predetermined distance apart from the end of the gun barrel. The bullet passing through the first opening activates a timing circuit to start current flow through a measuring device. The bullet passing through the second opening stops the current flow through the measuring device. The measuring devices gives an output indication that is indirectly proportionate to velocity of the bullet with units indicating the speed of the bullet. The measuring device may be a ballistic meter with no return springs on a meter movement to remain in its maximum position after measuring current flow therethrough.

Abstract: An electrochemical elapsed time meter indicator with round counter circui for a gun to indicate past usage whereby maintenance and repair or replacement procedures will insure greater reliability in critical field use. The meter, working on an electroplating principle as a function of current and time, may be activated by gun use such as by a switch on the gun trigger, an inductance or piezoelectric transducer in the buffer, a recoil operated microswitch or as part of the circuit in externally powered guns. The meter preferably is color coded to indicate weapon condition, area of use, and replacement or maintenance required.

Abstract: The light output of pyrotechnic luminants under dynamic conditions can be nitored to obtain data representative of ground surface illumination as a function of time and position of the illumination source. An array of photocells is disposed at substantially ground level throughout the range testing area, these photocells being sequentially scanned to provide a serial electrical data output during the firing of a pyrotechnic luminant-containing projectile over the range testing area. The serial data is transmitted to a remote control location whereat the data is received, sequentially demodulated, and converted into an optical display synchronously with the scanning in a pattern which simulates the illumination impinging on the photocell array. The position of the projectile over the range testing area is simultaneously tracked and a tracking information display is also provided.

Abstract: An instrument package (or telemeter) designed to be carried by a projectile uring test flights thereof and to process and record performance and/or meterorological data during such flights. The data is obtained from a plurality of on-board sensors and after signal conditioning the sensor outputs are sequentially sampled and the samples digitized before storage in memory. The stored data may be easily recovered after the projectile impacts by means of a portable interrogator unit. The package is designed to withstand the shock of the projectile's firing, flight, and impact.