Abstract: A process and apparatus which can be packaged in a warhead for disseminat a finely divided high explosive by means of a burster charge into the atmosphere as an high explosive dust-air cloud bomb. By interposing a damping means between the explosive burster charge and the load of particulate high explosive, the explosion of the HE explosive inside the container by the burster charge is prevented.

Abstract: A remote radar phase calibrator that provides radar phase measurement and libration. A trihedral or dihedral reflector placed in the radars field of view provides an amplitude calibrated phase stable signal to the radar. Movement of the reflector head-on to the radar provides a phase angle measurement that varies as a function of the radars transmitted wavelength and the distance the reflector is moved.

Abstract: This invention relates to an improved ballistic metallic armor and a method f producing same. The object of this invention is accomplished by utilizing composite metallic materials made up of two but preferably three or more layers of different metals or alloys. The arrangement of the layers are made so that the front face is a hard brittle material (Rockwell C-60) designed to shatter the steel penetrator and the hardness of the layers should decrease from front to back.

Abstract: An RF-insensitive semiconductor ignitor and primer cup assembly is created sing a double polished n-type silicon substrate having its top and bottom surfaces partially metallized to form Schottky barrier diodes. The metallized portion of the back side of the substrate is placed in contact with a conductive surface, and means are provided to electrically isolate those portions of the substrate which have not been metallized from both the metallized portions and the conductive surface. In one embodiment, the isolating means is an integral oxide ring which extends from the periphery of the contact metal to the edge of the substrate. In another embodiment, the means of isolation is a separate plastic ring.

Abstract: A limiting filter has nonlinear signal limiting devices integrally connected to the filter structure so that as the power level of input signals increase the nonlinear signal limiting devices decrease their impedance in response thereto, detuning the filter. Filter isolation thus becomes a function of both frequency and input power.

Abstract: A kinetic energy long rod penetrator is formed from a high density metal ing axially aligned elongated cavities uniformly spaced and extending longitudinally through the penetrator. These cavities allow for a long rod penetrator which is longer than previous long rod penetrators of comparable mass and material as well as a penetrator that is resistant to breakage.

Abstract: A flexible and bowed tow hitch having a A-configuration is adapted for tring a sled behind a snow vehicle. The hitch comprises three plastic straps; two straps form the legs for the A-configuration and the third strap forms the cross-bar for the A-configuration. The ends of the cross-bar strap are physically pressed against the respective ends of the leg straps to form the base terminal of the hitch for attachment to the sled. The other ends of the legs are physically pressed against each other to form the apex for the A-configuration. An elongated bar is embedded between these other ends. The bar is welded to a ring member to form a lunette-type connection for attachment to the snow vehicle.

Abstract: A high voltage, laser light initiated, dielectric breakdown switch for use n safe and arm systems for initiating exploding foil initiators. One electrode has an opening which allows light from a laser source to shine on dielectric material and induce breakdown. Conduction occurs between the electrodes and transfers energy from a power supply to the electronic foil initiator.

Abstract: This disclosure is directed to the use of application specific integrated rcuits in safe and arm devices. The application specific circuits each comprising a buffer means for forming an environmental interface and providing input to a microcontroller, latch means for recording physical evidence, power-up reset means for providing a delayed state change which initializes the microcontroller, static and dynamic AND gate means, command arm data link register means, and a programmable counter means for providing a hard logic derived timing function.

Abstract: A continuous bore evacuation system for aspirating the noxious gas products associated with the firing of tank rounds and for cooling all or part of the gun barrel between rounds. The bore evacuator employs an annular container which is fixed to the exterior surface of the gun barrel, preferably just ahead of the powder chamber. A plurality of canted ports lead from the container into the bore so that gas products can fill the container after a projectile passes the ports, and a compressed gas can be pumped in through check-valves to continuously clear the bore of gas products after launch. The ports may be arranged in a cochlear manner so that the flow of gas is substantially helical. In another embodiment, an aerosol solvent is injected into the compressed gas to prevent accumulation of propellant residue within the container, check-valves, and bore evacuator holes.

Abstract: A training grenade uses a high intensity flash to simulate an explosion in a time delayed fashion when thrown and/or a sonic device such as a buzzer for indicating arming. Alternative means to simulate the explosion can include sonic devices or radio frequency sources. An internal power source and firing circuit connected to an internal timer control the activation of the indicator or flash upon closure of an externally controllable switch. The switch can be locked in an open position through the use of a release pin which closes upon removal of the pin or can be held open through the use of a pivotally attached safety lever as used in conventional grenades.

Abstract: A phantom test cell and method for testing the response of a cardiac pacemaker to electromagnetic fields. The phantom comprises a substantially rigid shell which has a torso-like section and two leg-like appendages. The entire shell is filled with a tissue-equivalent material, which in one embodiment represents an upper bound approximation of human whole body averages. The phantom's torso is equipped with a plurality of access ports to which a current probe containment vessel may attach when immersed in the tissue-equivalent material. The containment vessel houses a current probe and flooded tube through which an implanted pacemaker's leads may pass, allowing induced currents to be monitored. In operation, lead current measurements are taken within the phantom and are normalized using measurements taken without the presence of a phantom. A transfer function is computed by taking the ratio of the induced current measured and a reference E-field and/or H-field measurement.

Abstract: A radio frequency gasket assembly having a flexible hollow tube enveloped a conductive layer, and filled with an incompressible fluid. In one embodiment thereof, the undeformed gasket is filled with a sufficient volume of incompressible fluid such that when the gasket is compressed proper contact pressure is achieved between adjacent conductive surfaces of the enclosure. In another embodiment thereof, the undeformed gasket is filled completely with an incompressible fluid, such as ethylene glycol. When the gasket is compressed, a portion of the fluid is allowed to collect in a spring-loaded reservoir, preventing excessive pressure build-up and rupture. When the compressive force is removed, the collected fluid re-enters the gasket.

Abstract: An optical deflection device for redirecting and/or focusing a high-power collimated beam of light, comprising an optically transparent gas-filled hollow sphere, and a plurality of gas-filled lenses positioned within the sphere. When photorefractive or optically non-linear gases are used within the sphere and lenses, a second beam of light made to travel along the path of the original beam, will result in a local change of refractive index of the gas, thereby altering the path of the original beam. In separate embodiments thereof, the lenses may be mechanically repositioned, the internal pressure of the sphere varied, or a combination of these and the foregoing accomplished.

Abstract: A radio frequency gasket assembly having a flexible hollow tube enveloped a conductive layer, and filled with a compressible fluid, or a combination of both compressible and incompressible fluids. In one embodiment thereof, the undeformed gasket is filled completely with a compressible fluid, such as air. When the gasket is compressed, a portion of the fluid is allowed to collect in a spring-loaded reservoir, maintaining at all times a substantially constant internal pressure. When the compressive force is removed, the collected fluid re-enters the gasket, which may then assume its original undeformed profile. In another embodiment thereof, the undeformed gasket is filled with a mixture of both compressible and incompressible fluids. When the gasket is compressed, a portion of the compressible fluid is evacuated or collected in a spring-loaded reservoir or the like, maintaining at all times a substantially constant internal pressure.

Abstract: An apparatus and method for accurately monitoring the flow and cure rate of a resin material. The method is accomplished through the use and incorporation of efficient sensors as integral components of a composite resin structure material. The sensors used are electrically conductive threads arranged in a non-intersecting, grid-like configuration. They may be placed into or between composite resin materials. These sensors serve as leads which are connected to a computer through a multiplexer/rapid switching system and a scanner. The data obtained for the monitoring of the flow and cure of resin is stored on a computer system and is presented on the computers' graphic window.

Abstract: An acoustic training mine simulator system for use with the pre-existing tiple Integrated Laser Engagement System (MILES). The MILES, located on a target, responds to the acoustic output of said mine simulator upon simulated detonation. The MILES acoustic detection circuitry momentarily disconnects the MILES power supply from the rest of the MILES circuit, causing the MILES to generate an audible alarm indicating a target has been hit.

Abstract: An acoustic receiver for interfacing indirect-fire weapons with the Multi Integrated Laser Engagement System ("MILES") responds to the presence of a device when the device generates a predetermined acoustic signal upon simulated explosion. The simulator then momentarily disconnects the MILES power supply from the rest of the MILES circuit. This action causes the MILES to generate an audible alarm indicating a hit by the explosive device.

Abstract: The overflow tube and ball valve of a conventional water tank are replaced with a collapsible tube, one end of which is located above the water outlet of the tank, and the other end of which is located above the water line in the tank and able to be compressed to allow water to flow through the tube thereby flushing the tank. The volume of water expelled from the tank is controlled by choosing an appropriate amount of compression. The compressed tube returns to its original height after flushing. In one embodiment of the invention, a handle on the exterior of the tank cover is used to compress the tube in a plunger-like motion. The handle is provided with markings corresponding to the amount of water flushed for a given vertical displacement of the handle. In another embodiment of the invention, a lever is positioned on the front wall of the tank and is able to cause rotation of a cantilever beam. At the free end of the beam is a connection to a vertical rod which is depressed by rotation of the lever.

Abstract: A fluidic, volume-cycled respirator circuit comprising a fluidic flowmeter, a tidal volume selection controller and an inlet valve. The flowmeter is connected to the controller through a transmitting means which transmits gas flow frequency signals. Said controller is then connected to the inlet valve, which is connected back to the flowmeter; hence, the respirator circuit is complete. The tidal volume selection controller may operate by either fluidics, electronics, or the combination of the two. The flowmeter facilitates supply of air to the patient. The amount of air supplied is controlled by the tidal volume selection controller which senses inspiration and gas flow frequency. The controller is equipped with a timer back-up system in the event that either the system or the patient fail to respond. The valve is operated at the direction of the tidal volume selection controller. The valve is open during the inspiratory phase and closed during the exhalation phase.