Abstract: Ceramic ferroelectric composite material-BSTO-Magnesia based compounds hag a low dielectric constant, low loss tangent and high tunability are disclosed. The composite material comprises Barium Strontium Titanate (BSTO) and a magnesia compound selected from the group consisting, MgZrO.sub.3, MgAl.sub.2 O.sub.4, and MgTiO.sub.3. The preferred composite is represented by Ba.sub.1-x Sr.sub.x TiO.sub.3 -magnesia compound, wherein x is greater than 0.00, but less than or equal to 0.75, and wherein the percent weight ratio between BSTO and magnesia compound 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.

Abstract: Undesirable reflections from an element in an optical system are eliminated y passing incoming light through a polarizer and a 45.degree. optical rotator before it strikes the reflective element. The reflected light component is again rotated 45.degree. by the rotator, for a total rotation of 90.degree., whereupon it is blocked from leaving the system by the polarizer. Alternatively, a quarter wave plate or other circular polarizing component may replace the rotator to result in a net rotation of the polarization of the reflected light by 90.degree..

Abstract: An improved chaff in which a plurality of metallic or metallic coated elets are joined as chain links that, when deployed, produce microarcs when the link elements make and break contact with each other in an electromagnet field such as that created by a high power radar transmitter. These microarcs will then in turn create current spikes that will reflect a radar signal that has a wider bandwidth than conventional chaff, so as to make it more difficult to distinguish the chain link chaff from a fast moving target such as an aircraft.

Abstract: There is disclosed a process for encapsulating a preform of arbitrary size and shape for the purpose of manufacturing a body by means of hot isostatic pressing. The preform is encapsulated with glass using a sol gel technique. The glass initially forms a hard, porous layer. Heating the glass in the hot isostatic press results in the formation of a gas-impermeable capsule around the preform.

Abstract: The invention is directed to a method and apparatus for testing the quality f pultruded material by measuring a load applied to the material as it is being pultruded and measuring the load associated with a fixed displacement of the pultruded stock material.

Abstract: A fire suppression system for a dumb waiter for carrying hazardous materi in a multiple story building includes an exhaust at the top of the shaft, a storage compartment for carbon dioxide gas above the topmost floor served by the dumb waiter, a first nozzle in the shaft near the top thereof, a second nozzle in the shaft near the bottom thereof, and conduits interconnecting the storage compartment and the nozzles. The system further includes vapor detectors in the shaft, each of which is adapted, upon detection of unsafe vapors in the shaft, to open the conduits to flow the carbon dioxide gas from the storage compartment to the nozzles and thence into the shaft above and below the dumb waiter, and to shut down operation of the exhaust.

Abstract: A photolithographed method and pattern for alignment of circuit patterns on double sided opaque substrate or semiconductor such as a silicon wafer during processing of integrated circuits.

Abstract: A solder composition and method of soldering using composite solders comprising a solder alloy and intermetallic filler particles. The intermetallic filler particles are lead-free, have high strength, wet and disperse well in solder joints, remain uniformly distributed and resist degradation on long-term aging. When added to commercial bulk or paste solders, the intermetallic particles reduce the lead content of solder joints by consuming volume in lead-tin solder, and improve the mechanical properties of the solder by inhibiting localized shear deformation and interfering with crack growth.

Abstract: An automatic liquid spraying system extinguishes burning embers and residue emaining after firing of a cannon assembly. The spraying system has nozzles mounted on moveable mounted arm means for spraying the liquid co-axially into the cannon tube breech and projectile area and onto the obturator spindle axis. In one embodiment, external electric and pneumatic powered sources provides the power to operate the system; and in another embodiment, a self-powered squirt gun type hydraulic source provides the power.

Abstract: A fin stabilized kinetic energy tank training device comprising a project having a nose and having nose and end sections, and constructed of a low density material such as aluminum, and having a hollowed-out section to further reduce weight thereof, so as to minimizing penetration of an armor system on impact thereon.

Abstract: The present invention discloses a method of incorporating at least one copy of a real a cloud into a simulated or real two-dimensional scene by extracting the radiance and transmittance from a real cloud; converting the radiance and transmittance of the cloud to the radiance and transmittance of a desired material such as brass, aluminum, copper, or graphite; adding at least one copy of the resulting cloud to the simulated two-dimensional scene; and scaling each cloud in the simulated two-dimensional scene so that each cloud appears at a desired location. The present invention uses the Atmospheric Transmission Large-Area Analysis System to extract the radiance and transmittance of a real cloud. The present invention can also change the infrared image of a cloud by extracting the radiance and transmittance of the cloud at one wavelength of light.

Abstract: A novel ceramic ferroelectric material having a low dielectric constant, 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 --ZrO.sub.2, wherein x is greater than 0.00, but less than or equal to 0.70, and wherein the percent weight ratio between Ba.sub.1-x Sr.sub.x TiO.sub.3 and ZrO.sub.2 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.

Abstract: A combustible fin protection device (10) for protecting the fin planforms 01) on a finned projectile (100) wherein the device (10) comprises a cover member (20) fabricated from a combustible material (21) and dimensioned to envelop the fin planform (101) to protect the fin planform (101) from elevated temperatures and propellant grain impacts during the in-bore transit of the projectile.

Abstract: A light weight ceramic armor providing complete ballistic protection agai penetration from projectiles of caliber 0.30 and 7.62 mm. armor piercing and ball projectiles, and consisting of a composite having a hard frangible facing the principle ingredient of which is a refractory oxide selected from the group consisting of magnesium oxide and aluminum oxide, bonded to a reinforced plastic back-up such as laminated fiber glass. This composite has an area density of approximately 12 pounds per square foot and provides approximately 1.7 times the ballistic protection as compared to standard steel armor of equal area density.

Abstract: Transparent ceramic armor consisting of a light weight composite formed by tilizing a face plate of transparent aluminum oxide or transparent magnesium oxide with a back-up plate of transparent plastic and the two plates bonded together with a transparent adhesive. This composite on test affords complete ballistic protection against 0.30 AP M2 projectiles at 0.degree. obliquity with a muzzle velocity of 2770 ft. per sec.

Abstract: A method and system for modification of a pattern on a semiconductor subste, comprising the application of an electrical current through a liquid medium having a series of individual pixels controlled by a computer, thereby causing the clear liquid to change to opaque in selected areas.

Abstract: An apparatus and method for testing the hardness properties of metallic st materials, wherein electromagnets are employed to replace clamping means. Said apparatus comprises two electromagnets, and a test head which comprises a ball indenter means, a conventional hydraulic hand pump, a pop-off release valve and numerous gauges. A method of testing metallic sheet materials, and specifically armors, is set forth.

Abstract: A transparent composite armor providing complete protection for small arms rojectiles up to and including caliber .50 AP M2 projectiles consisting of two or more layers of transparent material having a hard frangible face plate backed by one or more tough resilient plates to absorb the excess impact force after contact with the face plate, the several plates being bonded together with a suitable transparent adhesive.

Abstract: An audio optical processor unit employing a nonlinear organic optical element which may be in the form of a nonlinear polymer, a nonlinear organic material or a mixture of liquid crystal materials or polymers. The nonlinear organic optical element is interfaced by a piezo-electric crystal which encodes a laser beam passing through the optical element by inducing changes in the index of refraction or the changes in voltage potential across the polymer or non-linear organic material. The resulting encoded output is detected in a conventional manner by a photodetector array.

Abstract: A method of and apparatus for the non-destructive inspection and/or evaluation of materials by the computer processing of images produced on/by an image conversion screen/device is disclosed in which the images are produced by placing the object to be inspected and/or evaluated between the screen/device and a source of x-rays from an x-ray machine having the capability of varying its focal spot area size. Two images, one created with a large focal spot size and one created with a small focal spot size are processed and then combined in such a manner so as to accentuate the fine structure detail in the resulting image.