Abstract: A method and system for steering an antenna beam are provided. A light source emits light wherein at least one parameter of the emitted light is modulated. Modulated light is received by an optical detector and an analog control signal is provided by the optical detector in response to the modulated parameter. The control signal is applied to an analog-to-digital converter to convert the signal from analog to digital. The digital converter output signal is applied to a digital phase shifter for controlling the phase shift of the phase shifter and thereby steering an antenna beam according to the modulated parameter. The modulated parameter may be, for example, the intensity of the emitted light or the frequency of the emitted light. A plurality of converters and phase shifters may be provided for steering of phased array antennas.

Abstract: A system is provided for temperature compensating and monitoring the energy f a lithium battery. In this method, a temperature compensation factor is determined according to a value of temperature. A determination is made of the energy usage while the battery operates at that temperature. The temperature usage is then compensated in accordance with the temperature compensation factor. A second temperature, along with a second temperature compensation factor, is determined. A second energy level is determined and compensated as described for the first. A cumulative energy usage is determined according to the first and second compensated energy usage values.

Abstract: An improved store launching device is disclosed wherein the inside of a sdard sonobuoy launch container is modified to accept, and properly dispense, only one smaller and lighter store. A positioning ring is fitted securely onto the inner walls a preselected distance from the discharge end to provide a seat for a perforated obturator. A slotted pressure relief ring, with the edge adjacent the obturator having a biased cut of a predetermined angle therein, is placed adjacent the obturator and the discharge end of the container to surround the store.

Abstract: The disclosure shows a multi-store, electrically-operated sonobuoy launcher hat is connected to the sonobuoy launcher power system of the aircraft. The sonobuoys are sequentially stacked inside the launcher and current switching and blocking means regulate and direct pulses from a switch in the aircraft to ensure individual, single sonobuoy launches.

Abstract: This invention relates to a method and composition for improving the corron resistance and anti-wear properties of synthetic lubricating oil greases comprising the addition to said greases of effective amounts of a chelated Schiff base derived from the condensation of approximately stoichiometic amounts of at least one aldehyde and a polyamine.

Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising from about 10 to 90 percent by weight of an epoxy binder and 5 to 65 percent by weight of a combination of metal salts or pigments which consist essentially of calcium borosilicate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating may contain up to about 30 percent by weight of a titanium dioxide pigment and up to about 75 percent by weight of at least one organic solvent.

Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising from about 10 to 90 percent by weight of a polymeric polyurethane binder and 5 to 65 percent by weight of a combination of metal salts or pigments which consist essentially of calcium borosilicate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating may contain up to about 30 percent by weight of a titanium dioxide pigment and up to about 75 percent by weight of at least one organic solvent.

Abstract: An apparatus for processing thermo-composites is disclosed where individual lies of a prepreg, to be formed into a laminate, are processed under two, concentric vacuum chambers. Heat and consolidating pressure are applied under a first vacuum to the material and then a second vacuum is drawn under an outer, rigid shell.

Abstract: A physical property of a fluid or of any optical fiber is measured using an ptical fiber interferometer. A conductive material is disposed upon the surface of a region of a light tranmitting optical fiber and the region having the conductive material is disposed in the fluid. Light energy is applied to one end of the fiber and transmitted light is received at the other end of the fiber. Electrical energy is applied to the conductive material disposed upon the surface of the fiber to heat the region of the fiber and cause a change in the optical path length of the light transmitted through the fiber. The physical property of the fluid or optical fiber is determined in accordance with the change in the optical path length or phase of the received light caused by applying the electrical energy to the conductive material. Thermal conductivity is measured using a series of short energy pulses and determining the average phase change.

Abstract: This invention relates to acrylic polymers and more specifically to polyalamides and polyacrylates such as poly{2-[(N-2-methyl-5-nitrophenylamino)ethyl acrylate]} and poly[(N-2-methyl-4-nitrophenyl)acrylamide]. These acrylic polymers are particularly useful as nonlinear optical components in various electrical devices for processing optical amplifiers, generators, computational devices and the like.

Abstract: A polymer-reinforced metal matrix composite is disclosed which is formed by lending metal particles and polymer particles to form a homogeneous powder blend, and consolidating the powder blend to form a unitary mass. The unitary mass is then plastically deformed such as by extrusion in the presence of heat so as to cause an elongation thereof, whereby the metal particles form a matrix and the polymer particles form elongated filaments uniformly dispersed throughout the matrix and aligned in the direction of elongation of the unitary mass. An aluminum matrix reinforced with polyether-etherketone is shown to have enhanced specific strength and modulus over those of the aluminum alone.

Abstract: This invention relates to a corrosion-resistant coating capable of being lied to various substrates, e.g., particularly metal and plastic surfaces, as a single coat characterized as having a high-gloss, good adhesion and a high degree of flexibility. The corrosion inhibiting composition comprises an acrylic resin containing an effective amount of a corrosion-inhibiting pigment system consisting essentially of critical amounts of at least one zinc phosphate, zinc molybdate and at least one zinc salt of a benzoic acid.

Abstract: A motion dampening device is described that is efficiently and conveniently ackaged with sonobuoy components to reduce the effects of vertical motion caused by surface waves or internal buoyant forces. A plurality of spring steel spokes connected by sections of thin plastic sheet are fitted around a central core around a first-deployed element. As this element is packed, prior to deployment, the spokes and plastic sheet are wrapped around the core. Upon deployment, the stored spring forces push open to their extended positions and spread the plastic sheet, thereby impeding vertical motion of the element and reducing effects of flow noise on a sensor hanging therefrom.

Abstract: The adaptive filter for frequency modulation of the present invention utilizes an audio tone multiplexed into the baseband modulation spectrum as a pilot tone to control and determine the amount of adaptation of the effective and variable bandwidth of the filter for optimum selectivity and rejection of wideband interference or narrowband offset interference. The multiplexed tone is detected and the filter is adjusted according to the signal-to-noise ratio of the detected tone. A continuous and adaptive decrease or increase in bandwidth is produced to accommodate the actual signal bandwidth to achieve rejection of interference with minimum distortion. Additionally, the filter compensates for transmitter drift of center frequency. This filter may be used at radio or intermediate frequencies.

Abstract: This invention comprises a multi-store, gas-fired launcher that fits into, nd is electrically connected with, a transporting vehicle and that contains sequentially-stacked assemblies that generate sufficient gas force to discharge an individual store. An electrical pulse from the transporting vehicle cause a sequencer in the launcher to divert the charge to a burn resistor. At burn-out, a spring-activated striking arm punctures a CO2 bottle which provides sufficient gas pressure to force the store out of the launcher.

Abstract: A sensor is disclosed in which light is launched into the core of a singlode optical fiber having a tapered-down or narrow waist region between 2 tapers along an internal portion of the length thereof. The fiber is positioned so that a physical effect to be measured bends the fiber in the narrow waist region. The intensity of the light exiting from the core of the fiber is measured and the displacement is determined in accordance with the measured intensity. The narrow waist region of the fiber has a V.sub.co parameter of less than 1. A bellows which changes dimension with a change in pressure may be coupled to the fiber to bend it in the waist region in proportion to pressure changes. A magnetostrictive element which changes dimension with changing magnetic field may be coupled to the narrow waist region so that a change in dimension causes a displacement which bends the fiber.

Abstract: This invention relates to a corrosion-resistant coating capable of being lied to various substrates, e.g., particularly metal and plastic surfaces, as a single coat characterized as having high-gloss, good adhesion and a high degree of flexibility. The corrosion inhibiting coating comprises an alkyd resin containing an effective amount of a corrosion-inhibiting pigment consisting essentially of critical amounts of at least one zinc phosphate, zinc molybdate and at least one zinc salt of a benzoic acid.

Abstract: A structural element or member is disclosed that resists or damps vibration rom loads applied along a given axis without significantly sacrificing stiffness, through the use of stress coupling within an anisotropic material. Essentially, the structural member comprises alternating layers or laminates of stiff and viscoelastic or damping material bonded together to form a laminated structrue. The laminated structural member is oriented to receive the applied load in a direction that is parallel to the laminates. At least one of the stiff laminates shows anisotropic behavior when acted upon by the axial load, causing shear strain and concomitant transverse displacement therewithin, thereby loading the viscoelastic laminate in shear.

Abstract: This invention relates to acrylic polymers and more specifically to polyalamides and polyacrylates such as poly{(2-[(N-2-methyl-5-nitrophenylamino)ethyl acrylate]} and poly[(N-2-methyl-4-nitrophenyl)acrylamide]. These acrylic polymers are particularly useful as nonlinear optical components in various electrical devices for processing optical signals including interferometors, optical switches, optical amplifiers, generators, computational devices and the like.

Abstract: A multi-store launch container is disclosed wherein a plurality of stores, aintained in a tandem configuration therein, can be sequentially ejected. The container is normally carried by a vehicle and receives the necessary charges, of for instance pressurized gas, at its breach end through apparatus known in the art. A fluid-controlled flow valve maintains an open flow pathway through a first channel while blocking the opening to a second channel. After the first charge is fired, the diverter mechanism forces the flow valve to pivot and tightly shut the first primary channel and open the second primary channel to receive the next charge.