Abstract: A potential target scenery image data is filtered and complex-multiplied h synthetic discriminant functions to produce a two-dimensional, cross-correlated surface. The surface is then analyzed to determine the spatial coordinates of the target, if any.

Abstract: A pressure controlled pintle is employed in combination with a throttling quid, gel, or hybrid engine to provide a constant pressure and variable thrust from a single operating engine. As the propellants are throttled back and the chamber pressure drops, the pintle moves and closes the gap between the pintle and nozzle throat, thereby lowering the throat area and re-establishing the design chamber pressure related to pintle spring tension. By retaining the design pressure over a wide thrust range, the engine efficiency remains at the design value. This eliminates the drop of Isp due to pressure and keeps the cost of the system reasonable because only one engine is required. When a higher thrust is desired, a throttling valve in an injector increases the propellant flow rate, which causes a higher pressure in the combustion chamber. The constant pressure actuator moves the pintle to open the nozzle throat, which reduces the pressure to the design value. The design value may not be optimum.

Abstract: The structure of this invention provides a means for shielding an optically ensitive detector, device, or components from electromagnetic fields without shielding them from the optical spectra desired to be transmitted. The structure of the invention is in the form of an optically transmissive Faraday cage or box having optically transparent material selected from optical glass and optically transparent plastic which functions as a substrate. The substrate is provided a thin film of predetermined skin depths in the form of a conductive coating selected from silver and a nickel-chromiumiron-manganese-silicon-copper-alloy. The conductive coating is applied in a thickness equivalent to a predetermined number of skin depths in order to attenuate an external electromagnetic field strength to meet the tolerance of the detector, device, or components which are to be shielded.

Abstract: A sprayer of an elongated shape receives a desired liquid from an outside urce and spray-applies the liquid onto a fiber in response to motivating force provided by pressurized gas. The unsprayed, virgin fiber enters the sprayer through an inlet hole, is sprayed on with the liquid as it travels the width of the sprayer and exits the sprayer as a sprayed fiber through an exit hole. The pressure of the motivating gas can be varied to provide the optimum jettisoning force for a selected liquid, taking into consideration the viscosity, volatility and other pertinent characteristics of the liquid.

Abstract: A single hybrid junction discriminator is described for operation over a wide operating frequency range. The single hybrid discriminator uses a transmission line, phase shifters and fixed short circuits in providing a resonant cavity in the discriminator element to form a device that will measure near carrier frequency modulated noise on a carrier frequency. Only a minimum exchange of circuit components is required for changed carrier frequencies. With the phase shifter located in the signal channel, operation is a direct and easy process for quadrature detection. Component arrangement is critical to the operation of the single hybrid discriminator. The single hybrid discriminator is more sensitive than either the two hybrid or one hybrid and a directional coupler type discriminator because better usage is made of the available signal power.

Abstract: A wireless training device is disclosed which uses a digital computer to simulate or imitate electronic circuits, especially logic or computer circuits. Basically, a control program is selected by insertion of an edge encoded card. This card has on it a drawing of the circuit being taught as well as addressing information for use by the digital computer. Test points on the training card are holes, through which the test probe can contact the metal fingers of a test plane. The information derived from the test plane, as well as inputs from the various test switches, are operated on by the computer and control program to give output indications, usually in the form of lights. By putting the control programs in permanent memory (i.e. ROM or PROM) the student will be required to perform few preparatory steps. The unit is expandable by simply adding more programing to the memory chips and by drawing suitable training cards.

Abstract: A multivibrator controlled, transistor switching circuit having a controlle pulse period and variable voltage output for providing low voltage switching of a high operating voltage, high power output circuit.

Abstract: In a multi-pass laser optical system orthogonal polarization of any two immediately adjacent optical passes allows suppression of internal parasitics caused by overlap of laser radiation on successive passes through a laser oscillator or amplifier, allowing increased operating efficiency and closer spacing of adjacent optical paths.

Abstract: An optical detector, being operated in a non-linear portion of its response urve, is used as an electronic heterodyning element for two applied frequencies. They may be applied with two modulated light sources, or one source and an alternating current bias component to provide a preselected sum or difference output signal for selectable input frequencies allowing optical tracking of a target.

Abstract: An explosively operated device by which a strong magnetic field pulse and an electric current pulse of microseconds duration is produced. A cylindrical magnet is used to initiate the field, and its energy source is an explosive filled metal tube. Within the converter itself, the lines of magnetic flux are essentially axial. When an explosive charge in the central tube is detonated, the end of the tube flares radially, and the tube begins to expand along its length. As it does so, the tube compresses the magnetic field against the inner surface of a magnet. Simultaneously, a helical coil inside the converter experiences a rapid increase in flux density, thus satisfying Faraday's law. This interaction causes a pulse of electric current to be fed into the turns of the magnetocumulative generator as its initial magnetic field is maximized. As the central tube expands against the inside of the coil, it shorts out the turns one-by-one as the detonation wave travels axially along the converter.

Abstract: Apparatus for measuring force and displacement by measuring Moire fringe fts in response to relative movement between a pair of mirrors which reflect light beams therefrom to an interaction region. A pair of electro-optical sensors is positioned to view the interference region and detect fringe shifts responsive to relative movement between the mirrors.

Abstract: This invention relates to a mainlobe jamming cancellation system which can e used to allow a radar to detect targets even when relative motion exists between the jammer and the radar platform. In particular, this invention relates to a mainlobe canceller that utilizes a main antenna and one or more widely spaced auxiliary antennas in conjunction with one or more phase locked loops (PLL), to automatically align the jamming signals received by the several antennas. The alignment is necessary to realize a high degree of jammer cancellation.

Abstract: A system in which the light of a single laser is used to both expose a hologram and to simultaneously measure the formation of the hologram in the recording material.

Abstract: An encapsulated signal illuminant flare composition is comprised of powde magnesium from about 45 to about 60 weight percent, of powdered sodium nitrate from about 32 to about 49 weight percent, and of capsular adhesives containing about 91 weight liquid materials contained within capsules having cell walls of equal parts Arabic gum and gelatin of about 9 weight percent to yield a binder from about 6 to about 12 weight percent. The composition ingredients are blended in a dry mixer to achieve a homogeneously, blended signal illuminant flare composition. The blended signal illuminant flare composition is incrementally fed into a flare press for compacting into cartridges in two increments at about 14,000 psi pressure which ruptures the capsular adhesives by hydraulic forces to achieve polymer mixing and the surrounding of the powder ingredients with the binder ingredients to form a very homogenous signal illuminant flare composition mass.

Abstract: The device of the invention comprises a ball and socket and shoe assembly ich is pressure balanced with hydraulic fluid. This combination provides for low friction and relatively large travels when used as a linear to rotary motion actuator. In accordance with the contributions of the structural elements of the device, hydraulic pressure is applied to the rear of a piston by modulating the fluid pressure through a servo valve. Four pistons are typically used with two pistons driving the support spider clockwise and the other two driving the support spider counter clockwise. The control pressure produces a force through both the piston and pressure balanced shoes. The force is transmitted to the spider which is pivoted about flexures to produce a torque which results in a rotary motion of the spider (support).

Abstract: A spring tension retained, gas pressure actuated annular piston is mounted n a centered gas tube disposed within an outer gas tube connected to a gas flow tube. The annular piston which is positioned around the centered gas tube and within the outer gas tube is connected to a retractable tension spring positioned on the outer surface of the center tube. In the absence of gas pressure, the force of the tension spring retracts the annular piston away from the mating surface of the structure to which it is mated or to be mated, but subsequently, after gas pressure is applied to the annular piston the force of tension spring is overcome, and mating of surfaces of piston-seal and the structure to be mated takes place to achieve a firm seal without damaging the interface seal disposed between piston and mating surface. The self-sealing seal is employed to connect two sections of a gas supply tube during missile assembly procedure.

Abstract: A high precision transfer lamination plate/mandrel is fabricated in a sanch construction design wherein an inner core is constructed of a low coefficient of thermal expansion (CTE) comprised of an iron-nickel alloy core member (e.g., Kovar or Invar) with stainless steel cladding on each side of the core member. The stainless steel is selected from AISI type 302, 304, or 316. The stainless steel cladding outer surface of the top and bottom plate to which an electroplated copper foil circuitry is applied must be free of pits, scratches, and defects so as to yield a continuous circuitry satisfactory for military electronics. A matched (CTE) of the transfer lamination plate/mandrel with a composite material to which the electronic circuitry is transferred results in adherence of the copper circuitry minimally to the plate/mandrel to avoid blistering and enables the transfer to be achieved without distortion of circuitry features due to CTE mismatch.