Abstract: The invention relates to an energetic igniter charge consisting of a mixture of at least one secondary explosive and an optical doping material in powder form. In accordance with the invention, the optical doping material is a metal. The energetic igniter charge can be used in a detonator as well as in an igniter.

Abstract: A sensor unit comprising a sensor, a neural processor and a communication device, wherein the sensor unit is adapted to perform pattern recognition by means of the neural processor and to transfer the result of the pattern recognition via the communication device.

Abstract: A circuit which produces a current pulse through a load element, includes a primary energy storage unit and a secondary energy storage unit which can be charged up by the primary energy storage unit; an opening switching element which is configured to interrupt or establish a connection between the primary energy storage unit and the secondary energy storage unit; and a closing switch, which is configured to interrupt or establish a connection between the secondary energy storage unit and the load element and a counter current element which is connected to the opening switching element such that a counter current flows from the counter current element through the opening switching element when the closing switch is closed.

Abstract: The invention relates to an energetic igniter charge consisting of a mixture of at least one secondary explosive and an optical doping material in powder form. In accordance with the invention, the optical doping material is a metal. The energetic igniter charge can be used in a detonator as well as in an igniter.

Abstract: The invention relates to an acceleration apparatus comprising an accelerator surrounding an acceleration path with the exception of at least its mouth-side end and an acceleration body which is configured for guided and accelerated motion along the acceleration path and is formed by a missile and preferably a propelling housing at least partially surrounding said missile and in engagement therewith.According to the invention, in the accelerator at least two rectilinear guide rails or guide grooves are formed which preferably have a mutual identical angular distance with respect to the bore axis and which are adapted to be brought into constrained engagement with the acceleration body directly and/or indirectly via at least one respective slide shoe on the acceleration body.

Abstract: Means for polarizing ferroelectric materials up to a predetermined polarization level include the application of an electric field E to these materials. According to this method the ferroelectric material is subjected to an alternating electric field E, the frequency of which ranges from about 0.001 to 1 Hz, and which is made to increase gradually and in a cyclic way between 0.+-.E.sub.N, E.sub.N being slightly in excess of the coercive force E.sub.C of said material. Simultaneously, the intensity i of the current traversing the material (2) is measured as a function of the applied field (E) using a unit of visualization, until a stable curve i=f(E) is attained. The invention is particularly suitable for obtaining a stable polarization of ferroelectric polymers, copolymers, crystals, and polycrystals, with the objective of using the piezoelectric and/or pyroelectric properties of these materials.

Abstract: Disclosed is a high-acceleration resistant, programmable, electronic time fuze and a method of an apparatus for the correction of the operating time of this time fuze by muzzle velocity measurement carried out inside the projectile or at the gun tube. The time fuze uses the muzzle velocity measured at firing to adjust its operating time. Thus, range dispersion of the event time is substantially reduced. The muzzle velocity is measured with a metal sensitive probe installed inside the projectile. When the probe passes annular grooves in the gun wall, an oscillator is detuned and generates pulses for determination of the projectile muzzle velocity. A bidirectional counter responds to the pulses in one direction, to other information in the other direction and sets off the fuze at a predetermined count such as zero.

Abstract: Method and means for polarizing ferroelectric materials up to a predetermined polarization level include the application of an electric field E to these materials. According to this method the ferroelectric material is subjected to an alternating electric field E, the frequency of which ranges from about 0.001 to 1 Hz, and which is made to increase gradually and in a cyclic way between 0.+-.E.sub.N, E.sub.N being slightly in excess of the coercive force E.sub.C of said material. Simultaneously, the intensity i of the current traversing the material (2) is measured as a function of the applied field (E) using a unit of visualization, until a stable curve i=f(E) is attained. The invention is particularly suitable for obtaining a stable polarization of ferroelectric polymers, copolymers, crystals, and polycrystals, with the objective of using the piezoelectric and/or pyroelectric properties of these materials.

Abstract: An armor-piercing projectile having first and second armor-piercing cores supported in axially spaced relation with an intermediate layer filling the space between the cores constituted of a material having a substantially lower sound transmissability than that of the cores to prevent shock detonation of the second core upon impact of the first core with an armor plate.