Abstract: To provide a combat identification device not affected by adverse environtal conditions, thermoelectric modules are incorporated to a rotatable panel coupled to a target vehicle. By supplying the appropriate power to the thermoelectric modules, one surface of each thermoelectric module would exhibit coolness while the other surface of the module would exhibit heat. The panel to which the thermoelectric modules are incorporated therefore has a cold surface and a hot surface. And by rotating the panel, an identification signature is provided to an infra-red reviewer of an attacker to indicate that the vehicle to which the assembly of the instant invention is attached is a friendly vehicle. Instead of a single panel, two panels may be joined together in an inverted-V shape.

Abstract: An improved tungsten penetrator employing tungsten whiskers of various crystalline orientations--specifically the [100] orientation. The penetrator has enhanced penetration ability and strength.

Abstract: A method and apparatus for encoding information on a chaotic system by causing tiny perturbations in an accessible system control variable, or trajectory, uses the natural underlying symbolic dynamics of the system to encode the information. The system is allowed to behave chaotically even while tracking a pre-specified information-containing symbol sequence, thus maximizing the efficiency of information encoding and transmission.

Abstract: A light weight armor comprising alternate layers of a high and lower dens medium.

Abstract: A novel ceramic ferroelectric material having a low dielectric constant, extremely low loss and high tunability. The material is a composite comprising Barium Strontium Titanate (BSTO) and a ceramic material having a low dielectric constant. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 --MgO, wherein x is greater than 0.00, but less than or equal to 0.75, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and MgO ranges from approximately 99%-40% and 1%-60%, respectively. The novel materials possess superior electronic properties; and they may be employed in various antenna systems at both microwave and millimeter wave range frequencies.

Abstract: A hybrid fuel-air warhead having a housing containing a cylindrical body of reactive liquid surrounded by a housing containing a cylindrical body of reactive dust. A means to burst the two housings is provided along with a number of disks and end caps used to facilitate the turbulent mixing of the reactive liquid and reactive dust and to provide control of the cloud height.

Abstract: To determine the optimum load a laminate member or element is capable of bearing, a three-dimensional progressive analysis is proposed in which the stress and strain states of each ply of the laminate are subjected to failure criteria. If there is failure, new ply stiffness parameters are calculated. Thereafter, the ply is tested with the new parameter until the optimal load is determined. If no failure is detected for a given stress and strain for the ply then the load may be incremented and again applied to the ply, for further testing. Alternatively, the same load may be applied to the ply for a further period of time, until the optimal load is determined and/or the analysis is deemed to be finished.

Abstract: A method for joining sections of densified ceramics, and ceramics to carbon omprising the steps of: placing a preceramic polymer between bodies of the materials to be joined, applying mechanical force thereto, and heating to a temperature sufficient to convert the preceramic polymer to constituents of the materials to be joined thus bonding the materials, and cooling to room temperature.

Abstract: A system uses laser optic technology for non-obtrusive monitoring of movements a missile control surface undergoing electromagnetic testing. The system includes a laser source, a detector positioned opposite the laser source, an attenuator assembly positioned between the laser source and the detector, and a recorder for recording data processed by the detector. The attenuator assembly consists of a framed translucent gray scale shaded window mounted on a block member, which in turn is mounted to the missile control surface. The control surface is a pivotally mounted canard member on the missile body. Generated laser beams project onto the gray scale shaded window. The gray scale shading affects the intensity of the directed laser beams (darker areas attenuate more light and lighter areas allow more light to pass through).

Abstract: An armor applique for the muzzle end of a gun tube includes a collar which astens onto the gun tube and which has affixed to its annular surface a number of radially extending circumferentially spaced explosive filled rods which will cause deflection premature functioning of and/or damage to an oncoming warhead. The rods are replaceably affixed to the gun tube by bayonet type connectors.

Abstract: A method of and system for mortar fuze apex arming is disclosed in which a icroprocessor circuit is added to the M734 class of mortar proximity fuzes such that, at launch, the microprocessor measures the turbine-alternator frequency and the Doppler frequency and uses those values to calculate or look up the charge and angle used by the gunner firing the mortar as well as the time of flight to the trajectory apex, based on stored firing table or equation information. The microprocessor then causes the electrical arming of the fuze at the apex of the flight of the mortar round, using existing arming circuits already present in the M734 class of mortar proximity fuzes. Alternatively, the microprocessor may cause the electrical arming of the fuze just prior to the desired height of burst for the mortar round.

Abstract: An explosive and lightweight container comprising fire-extinguishing and rgy absorbing components. The fire-extinguishing component include an exterior vented plate; a honeycomb element filled with a fire-extinguishing agent; and separated from the vented plate by a membrane to prevent leakage and contamination. The energy absorbing component includes an energy absorbing material; pusher plate; and a honeycomb crush element. In operation, any blast and conflagration are mitigated by energy absorbing material and fire-extinguishing material, respectively.

Abstract: A technique and apparatus for measurement of resistances of 0.025 ohm and ss without disconnection from the circuit. The invention is used for measurement of degradation in cable shields. The method can also be used for measurement of junction resistances in high current circuits such as auto starters. The invention allows measurements to be made with the circuits connected so that the faults are present in the measurement setup. The method includes inductive coupling of long duration repetitive current pulses onto the circuit under test, measurement and display of induced current and voltage pulses, and display of induced current and voltage pulses on an oscilloscope.

Abstract: An individual mine launcher is designed to pneumatically launch high explve VOLCANO and MOPMS mines to simulate flight and impact typically encountered in field use. Electronic components and controls are used to monitor and initiate the arming sequence of the mine. Two configurations are used with the same pneumatic and electronic controls. The air-launch configuration allows the mine to be launched into the air at various specified testing elevation angles. The control impact configuration shoots the mine into a chamber where the mine hits an impact surface and then falls into a test monitoring area below.

Abstract: A process for visualization of a blast wave, which is the shock wave resulting from an explosive charge, is practiced by observing disturbance contours on a liquid-air cloud and interpreting resulting graphical and calculated data to evaluate matters related to the explosive blast wave.

Abstract: An ultra wide band DC to GHz balun consisting of transmission lines, a small inverting junction, and an RC network connecting the shields of the balanced load transmission lines such that an unbalanced source sees a matched load from DC to GHz.

Abstract: An RF-insensitive semiconductor slapper ignitor is created using a silicon ubstrate having a first metallized portion centrally located on its bottom face to form a Schottky barrier diode thereon, and a second substantially smaller metallized portion centrally located on its top face to form a consumable plug. A flyer disc is disposed atop the second metallized portion and is propelled when the consumable plug vaporizes in response to the high current density associated with ignition. In various embodiments the flyer disc is either an insulating material such as plastic, or polyimide, or formed integral to a top contact metal layer.

Abstract: A training device substantially identical in size and shape to the Claymore antipersonnel mine that cooperates with the existing MILES (Multiple Integrated Laser Engagement Set) system. The training device includes a directional acoustic signal that approximates the effectiveness range of the actual Claymore mine.

Abstract: An acoustic training device for simulating the effects of a weapon posing omnidirectional threat in a tactical engagement simulation system generates an audible signal of a predetermined frequency and duration once activated. The amplitude of the signal generated corresponds to the kill-zone of the weapon being simulated. The signal may be modulated so as to produce a predetermined number of pulses which are easily distinguished from other noises associated with the tactical exercise.

Abstract: A fuel-air explosive apparatus comprising a standard plastic beverage bot, a plastic burster tube, a conventional detonator, a detonating cord, Teflon.RTM. tape and a liquid fuel. All of the components of the fuel-air explosive apparatus are readily available, standard materials.