Abstract: A piezoelectric power supply for a fuze assembly includes a stacked array of piezoelectric ceramic discs, a hollow can for holding the stacked piezoelectric discs, flexible electrical circuits interposed between the discs and the interconnecting respective positive and negative faces of the discs. The can is deformable upon receipt of a predetermined pressure impulse for transmitting the pressure to the discs. The flexible circuits conduct electrical current and provide positive and negative terminals for supplying electrical power upon deformation of the can and the piezoelectric discs by the pressure impulse.

Abstract: A reserve activated electrochemical cell uses a frangible glass ampule for storing an electrolyte. The ampule is located within a first cylindrical cup-shaped metal housing containing a pair of cell electrodes. One of the electrodes is formed by an electrically conductive ring electrically isolated from the wall of the housing while the other electrode is constituted by an electrically active coating on an inner surface of the wall of the housing. The first cylindrical housing is arranged to form a contiguous extension of a second cylindrical metal housing and is attached by an electrically conductive weld bead located along a peripheral edge of an open end of the cup to the second housing to form a fluid-tight seal therewith while facilitating an electrical connection to the first one of the electrodes. An electrical connection to the other one of the electrodes is provided by a wire extending through a fluid-tight seal in a wall of the second housing and connected to the other electrode.

Abstract: A temperature compensating ballistic control tube system for varying the volume containing primary propellant, for the purpose of affecting the effect of the propellant on the projectile in order to compensate for the effect of ambient temperature upon the performance of the primary propellant. The volume containing the primary propellant is changed by pushing the projectile away from the casing containing the primary propellant, down a gun bore by a piston of the ballistic control tube. The piston, pushing the projectile, is moved by an ignited secondary charge in the ballistic control tube. Electronic components detect initial movement of the piston and projectile and, after a certain delay, ignite the primary propellant thereby ejecting the projectile from the gun. A typical primary propellant, within a given volume, is temperature senstive, that is, it provides more force to the projectile at higher temperatures.

Abstract: A fluid control apparatus for selectively providing a stored fluid to a working environment for the fluid includes a container for storing the fluid. The container is arranged as a metal thimble with longitudinal score lines evenly spaced about its diameter. A weight is attached to one end of the thimble to provide a force on the thimble in a longitudinal direction as a result of a corresponding acceleration of the thimble. The scoring lines produce stress concentrations and serve to weaken the thimble in its radial direction. The longitudinal force produced by the weight during acceleration results in a collapse of the thimble and a rupture of the walls of the thimble along the score lines to produce exit orifices for the fluid stored in the thimble. In one embodiment of the present invention, the fluid is an electrolyte, and the fluid control apparatus is used in a reserve activated battery housing to store the electrolyte until the acceleration induced collapse of the thimble.