Abstract: A radar correcting system has features for providing a corrected radar receiver reflection to a Doppler process unit. The corrected receiver pulse accounts for variances in phase, amplitude and frequency of the transmit pulses. The system has a phase detector that detects the phase difference between a stable oscillator and the transmit signal, providing a complex video or real and imaginary outputs. An operator that will normalize the transmit pulse is determined. The operator is applied to the reflections received by the receiver antenna to remove from the reflections any vagaries due to varieties in the transmit pulses. The data proceeding to the processor deals only with the objects causing the radar reflection.

Abstract: A rigid packaging material having a coating of heat-sealable, anti-static plastic. A fiberboard sheet substrate is coated with a lamina of polyethylene made electrostatic-free by the addition of an organic anti-static compound. When skin-packaged with a film of heat sealable, anti-static plastic material, a static-sensitive item is completely enclosed by a static-free barrier package.

Abstract: An optical computing system is provided for performing a linear multiplication operation involving a matrix with bipolar values. A plurality of beams representing the values of a N.times.1 column matrix Q illuminate an optical mask having elements disposed in a two-dimensional (M+1).times.N array. Each element of the first M rows of the mask represents the offset of the value of a corresponding element in a known M.times.N matrix by a scalar constant c. Each element of row M+1 of the mask represents the value c. An array of photodetectors collects the light passing through the mask, with the light from each row of elements detected by a respective photodetector. The outputs of the first M photodetectors represent the product of Q and M after M has been offset by c. The output of photodetector M+1 represents the scalar value produced by the multiplication of Q and a row matrix represented by row M+1 of the mask matrix.

Abstract: A cover for openings in a partially assembled missile or aircraft structure to prevent entry of chips, oil or other debris during further machining or other manufacturing operations. The cover has a central elastically compressible plug section adapted to fit snugly in an opening and an outwardly extending flange around one end of the plug. When the plug portion is inserted into the opening, the flange covers a ring of bolt holes surrounding the opening. The plug is formed from an elastic closed cell foam material and preferably has a cross-section slightly larger than the opening so as to be compressed slightly when inserted in the opening. The cover is coated with an elastomeric polyurethane coating to prevent flaking of the foam plug when inserted and removed from the opening and to prevent adhesion of contaminates to the cover. Because of the compressibility of the plug, each cover can be used with similarly configured openings of slightly varying sizes.

Abstract: Disclosed is a method and apparatus for forming a liquid tight joint between the ends of conductors (pipes) in a piping system for carrying a liquid metal fluid (LiPb). The ends of the pipes are loosely telescoped to allow for misalignment and then initially cooled by coils to solidify the liquid metal fluid in the annulus between the telescoped ends so that the solidified liquid metal itself seals the joint. Suitably located insulation and cooling fins provide thermal equilibrium for the solidified liquid metal in the annulus to maintain the seal. To disconnect the joint, the joint is heated to liquefy the solidified liquid metal in the annulus so that the ends may be pulled apart.

Abstract: A cable carrier/retractor for supporting, protecting and guiding a cable to an equipment drawer in a cabinet including a framework while at the same time allowing for addition or removal of cables without any disassembly of the mechanism. The carrier supports a cable from an entry position adjacent to the framework of the drawer to an exit position adjacent to the back panel of the drawer. The carrier generally comprises a first having an entry end for supporting a cable from the entry position to an intermediate position, and a second channel for supporting the cable from an intermediate position to the exit position, a hinged mount connecting the first channel to the frame, and an intermediate hinge for connecting the channels. In a preferred embodiment, a retaining hinge connected to a drawer-mounted slide member or the drawer back panel holds the exit end of the second channel in a position adjacent to the back panel.

Abstract: Electro-optical interface connections between electronic modules are used for data transmission rather than conventional pin and socket connections. Each module has on its top a number of diode pairs, one of the diodes transmitting light, and the other receiving light, and converting the light into electrical pulses. A data bus block is mounted across the tops of the modules. The data bus block has corresponding diode pairs that align with the diode pairs in the modules. Light pulses may be transmitted from the modules to the data bus block onto parallel data bus lines, then transmitted back to other modules from the data bus lines. On another side of the module, a serial electro-optical connection using a diode pair transmits to and receives light pulses from a fiber optic line for communicating with modules other than in the cluster.

Abstract: A self contained failure tolerant linear drive mechanism that is especially adapted for celestial space applications. First and second motors are concentrically connected to a shaft for axial movement through rotation of either or both of the motors. A locking mechanism having failure tolerant releasing means cooperates with each motor to provide for selective actuation of either motor and predetermined axial movement of the shaft.

Abstract: Disclosed is a method and apparatus for forming a cold weld joint between parts comprising a sleeve (or coupling) to receive the ends of conductors (or pipes). The sleeve is provided with weld pads which when the sleeve cools will engage one of the conductors and be cold welded thereto by the forces of shrink fit. Serrations are provided for axial strength of the joint and to limit the plastic flow of the material of the pads. A second conductor is loosely telescoped in the sleeve by bellows for compensating for any misalignment when the parts are initially brought together. Later the bellows is provided with a backing material to rigidly connect the second conductor to the sleeve.

Abstract: A ballistic comparative ohmmeter for use in testing the resistance between different selected pairs of a plurality of terminals in a test circuit in comparison to the resistance between corresponding pairs of terminals in a reference circuit. the ohmmeter is particularly useful for making resistance tests in circuits included in assembled products. The ohmmeter makes comparative resistance tests during a transient response period following application of the current to the selected pair of terminals as well as under steady state conditions. Solid state stepping switches that are sequentially stepped by pulse counters are utilized to sequentially connect different combinations of terminals in the test circuit and the reference circuit. Protection circuits limit the voltages applied across the test circuit and master circuit terminals. Indicator panels immediately provide a steady state indication of the pair of terminals in the test circuit at which a fault is detected.

Abstract: A flexible waveguide for transmitting waves from a sensor mounted on a gimbal includes a cable comprising an outer flexible sheath and a plurality of flexible polytetrafluoroethylene fibers bundled within the sheath and including a termination flange coupled to at least one end thereof with the flange including a wedge-shaped plug and a tapered cavity engaging the end of the cable.

Abstract: An easily separable but conventional-appearing hinge wherein the hinge flaps can be connected or disconnected to/from one another without relative lengthwise displacement of the flaps by employing short axial movement of the hinge pin. The flaps thus may be hingedly securely connected together, or disconnected and separated within limited space. The flaps have tubular knuckles with adjacent space or gaps so knuckles of one flap can be interdigitated with knuckles of the other flap and held together by the hinge pin. Knuckles of one flap are slotted longitudinally forming open sided or split tubes; those of the other flap are fully tubular, i.e., unslotted. The removable hinge pin has adjacent cylindrical and flat portions, the latter positionable in gaps longitudinally aligned with the full tube knuckles of one of the flaps.

Abstract: A separable electrical isolator for coupling two pieces of conductive tubing carrying high pressure cryogenic gas includes a gas-impervious dielectric spacer with a bore in which the pieces of tubing are sealed axially-aligned in fluid communication with an electrically-nonconductive gap between them. A pair of complementary coupling members are rigidly attached to the pieces of tubing to define outwardly-extending annular flanges that are each sealed about the periphery of a corresponding one of the pieces in a position slightly set back from an end of the piece. Each flange has an annular rib protruding from it toward the end of the piece. The coupling members are separably and nonconductively interconnected with the annular ribs applying compressive force to the spacer to thereby effect the seal.

Abstract: A coupler for electrically-isolating two conductive sections of fluid-passing line includes two nonconductively-interconnected pieces of tubing for insertion in the line. The pieces of tubing each have a divergently-flared end, and the flared ends are nonconductively-interconnected within two dielectric wafers. Each wafer has a tapered hole extending through it that matches the flared ends and enlarges to a face on the wafer. The flared ends are each bonded within a separate one of the tapered holes in a position recessed from the face with the flare of the end paralleling the taper of the hole, and the faces are bonded together with the larger ends of the tapered holes aligned and the flared ends sealed in fluid communication with an electrically-nonconductive gap between them.

Abstract: A separable electrical isolator for coupling two pieces of conductive tubing carrying high pressure cryogenic gas includes a gas-impervious dielectric spacer with a pair of opposing surfaces and a bore extending therebetween in which the pieces of tubing are sealed axially-aligned in fluid communication with an electrically-nonconductive gap between them. A pair of complementary coupling members are rigidly attached to the pieces of tubing to define outwardly-extending annular surfaces that are each sealed about the periphery of a corresponding piece in a position slightly set back from and facing an end of the piece. The coupling members are separably and nonconductively interconnected with the annular surfaces facing the spacer surfaces and O-ring seals in between to apply compressive force to the spacer and seals and thereby effect the seal.

Abstract: A gimbal-less infrared (IR) target sensor for mounting in an IR transmissive nose cone of a guided missile comprises a fixed, concave, primary mirror mounted coaxially in the base of the nose cone; a fixed, convex, secondary mirror mounted at the focus of the primary mirror; and a plurality of IR sensing units having IR transmissive elements located around the periphery of the primary mirror. A shaped-charge is located aft of the primary mirror. The IR-transmissive elements incorporate IR-conductive fiber optics to transmit the IR signal to detectors aft of the shaped-charge for detection, processing, and missile guidance.

Abstract: A bistatic VHF Doppler radar is utilized to detect and track one or more intruders crossing a large annular ring surveilance zone surrounding a central high security installation. A central omni-directional transmitter radiates the surveillance zone with a continuous wave (CW) signal. Predetermined ones of a plurality of receiver antennas circumferentially spaced around the surveillance zone receive a portion of the signal which is reflected by an intruder crossing the surveillance zone and a portion of the signal which is directly radiated from the transmitter antenna. The reflected signal portion may be received by antenna arrays each of which is controlled to form a null in its pattern toward the transmitter antenna to overcome direct signal overload. The direct signal portion may be received by stub antennas. Each antenna array and each stub antenna is connected to a separate channel of a dual channel receiver.

Abstract: A thin frangible cork barrier conforming to the contour of the burning surface of individual solid propellant grains in a multiple grain rocket motor prevents premature ignition of the protected grain by the heat of combustion of previously ignited adjacent grains and is expelled through the rocket motor nozzle upon ignition of the protected grain. In a second embodiment, the thermal protection afforded by the frangible cork barrier is augmented by bonding to a thermally-protective elastomer layer which is in turn bonded to the propellant grain burning surface. By virtue of the composition and structure of the embodiments, thermal protection is afforded. Upon ignition of a protected grain the thermal barrier breaks up so as to pass readily through the throat of a small motor nozzle.

Abstract: An improved electro-explosive squib device is disclosed with filter/shield characteristics rendering the device substantially immune to electromagnetic environments, thus preventing accidental ignition of the squib device. The invention provides for adapting existing squibs or constructing new squibs with immunity to the electromagnetic environments while adding only a minimal amount of material to the device, thus minimizing the possibility of personnel injury caused by debris ejected from rocket propellant ignited by the squib device. These benefits are achieved while maintaining reliability and extended shelf life, and at minimal cost of conversion or manufacture of the squib devices.

Abstract: A laminated packaging film useful for skin-packaging electrostatic-sensitive items and protecting the items from electrostatic damage during packaging and while the items are vacuumed, contained, and removed from packages. The film includes a pair of sheets of highly resistive, heat-sealable plastic between which is sandwiched a sheet of conductive, heat-sealable plastic. The film resists the buildup of static charges while the item is being packaged and forms a protective Faraday cage while the item is contained in the package.