Abstract: A surface acoustic wave (SAW) device is fabricated to minimize or eliminate purious signals caused by bulk modes. A backing layer is provided on the bottom surface of the crystal substrate of the SAW device having an acoustic impedance nearly the same as that of the crystal substrate for a family of spurious bulk modes.

Abstract: A digital counter is phased locked to a reference frequency by a voltage trolled oscillator which causes the counter to increase its count rate or decrease its count rate in accordance to the presence of a one or a zero on the most significant bit of the counter at the halfway point of one cycle of the reference frequency. The counter is reset at the end of the cycle of the reference frequency. A single microprocessor which can assess this most significant bit (MSB) and vary the oscillator output, can in this manner control any number of independent phase lock loop circuits.

Abstract: The fuel air explosive (FAE) device of this invention is equipped with a vity responsive unitary burster-detonator positioned in the liquid fuel, wherein the burster is heavier than the liquid fuel and the cloud detonator is lighter than the liquid fuel to provide for automatic means to orient the burster at the bottom of the fuel container and to simultaneously orient the cloud detonator at the top of the fuel container with hand operated release means on the exterior of the device to activate the burster and cloud detonator.

Abstract: A method of clearing a target range or other area of buried unexploded ornce (UXO) by advancing natural galvanic electrochemical corrosion whereby ferrous parts of the UXO is simply rusted away at an accelerated rate and rendered harmless within 5 to 10 years in a safe manner and at substantially reduced cost. The electrolytic condition of the soil containing the UXO is preferably enriched. The soil may be saturated with a liberal amount of salt water or other electrolytic chemicals for establishing a corrosive bed several feet below the surface and a dc voltage applied across the soil to enhance stray current corrosion. The galvanic action of the soil electrolyte may be further enhance by elevating its temperature such as by selective covering with black plastic sheets.

Abstract: A shaped charge and method of breaching reinforced masonary walls is disced. The shaped charge includes an annular liner located centrally between the ends of a cylindrical container filled with explosive. The device is placed in a pilot hole in the wall and is detonated simultaneously at the ends. The charge creates an annular radially expanding jet of explosive gases and fragments directed into the wall providing a man size opening therein.

Abstract: A moveable wing aircraft including a quick release, attachment mechanism carrying the aircraft on a bomb rack or other carrier and a mechanism for deploying the moveable wing from its captive carry position to its extended free flight position are disclosed. The aircraft includes an elongate fuselage, a portion of the top surface of which is substantially flat in order to accommodate the moveable wing. The moveable wing is positionable between a captive carry position in which it is aligned with the longitudinal axis of the fuselage and an extended free flight position. The single, moveable wing is pivoted around a central point from its captive carry position to its extended free flight position such that it is substantially perpendicular to the aircraft fuselage. The quick release mechanism extends through apertures in the wing in its captive carry position and is spring biased to retract through the wing and into the aircraft fuselage when released from the bomb rack or other carrier.

Abstract: The eccentrically and over-center latch device for high load holding capay and quick release/quick engagement with a low, flat profile which allows the device to be used in small operating clearance.

Abstract: Methods are shown for deducing the point of impingement of a beam, such as particle or electromagnetic beam, on a planar detector which is much larger than the beam cross-section. The methods involve chopping the beam before it reaches the detector by means of a chopper which periodically obscures the field of view of the detector as a known function of the chopper motion, and then determining the point of impingement from output measurements of the detector and from the known geometry of the chopper and the detector.

Abstract: A means for augmenting the fragmentation of a lightly confined High Exploe Anti-Tank (HEAT) warhead so that it can be used as an area or interdiction weapon. Process involves the placement of an elastic sleeve over the HEAT warhead by the gunner in the field when he feels fragmentation will improve his effectiveness.

Abstract: A balanced ranging and synchronization (R&S) system for a master(M)-slave satellite pair including a clock, a transmitter, a receiver, a time difference measuring device and a calculating device on both M and S. Each satellite transmits timing signals synchronized to its clock, receives the timing signals from the other satellite and measures the time difference between the transmission and reception of the timing signals. The time difference measured on each satellite is then transmitted to the other satellite. The caluculating device on each satellite utilizes these time difference measurements to calculate the asynchronism between the clocks and the range between the satellites. Finally the S clock is adjusted so that the asynchronism is reduced to within predetermined limits.

Abstract: A companding digital to analog converter (DAC) of a digital input and exponential output is utilized to drive a PIN diode having a logarithmic attenuation characteristic. An RF signal applied to the diode is linearly attenuated by the diode and variably controlled by digital means through the DAC.

Abstract: A mechanism for distributing axial thrust loads acting on a rotating shaft, ncluding dual thrust bearing assemblies concentrically mounted on the rotating shaft for transmitting axial thrust loads to the thrust load distributing mechanism. The thrust load distributing mechanism includes a stationary support member having at least one fulcrum to provide a reaction force to counterbalance the axial thrust loads acting on the rotating shaft, an annular load lever cooperating with each of the at least one fulcrum, at least two thrust transfer members cooperating with first and second segments on the annular load lever and the dual thrust bearing assemblies, and a force transmitting means.

Abstract: A controller for a locked carrier distributed multiplexed telemetry system hich uses on-off switching of a d.c. power supply and a pilot signal generator at a remote control unit. A pilot signal from the remote control unit is amplified and rectified. The d.c. rectifier output, occurring only during the presence of the pilot signal, is sensed by a comparator which provides rapid transition pulses to advance a counter. The counter is advanced one count for each pilot signal cycle (on-off-on) and is reset for each d.c. power supply cycle (on-off-on). The devices to be controlled are connected to the output of the counter.

Abstract: Gamma radiation is detected by placing iron doped glass in an environment bject to gamma radiation and then measuring any color change in the doped glass as a function of gamma radiation.

Abstract: A gyrotron traveling-wave device including quarter wavelength anti-reflece dielectric layers to enhance microwave absorption. A drift tube made from a hollow waveguide is positioned within the gyrotron to surround an electron beam passing from an electron gun to a cavity. A plurality of parallel highly lossy dielectric suppressor rings are interspaced with a plurality of conductive rings positioned to surround the electron beam and located within the waveguide. An anti-reflective layer is formed on the suppressor rings to enhance the absorption by the rings of radiation due to parasitic oscillations by reducing reflections of incident radiation from the suppressor rings. In an alternate embodiment, one or more suppressor rings including an anti-reflecting layer are located within the cavity.

Abstract: This invention relates to various 2-acetyl- and 2-propionylpyridine thiosemicarbazones which are substituted on the 4-nitrogen atom. These compounds are useful in the treatment of gonorrhea and, in addition, many are useful either in the treatment of malaria or bacterial infection. Also disclosed are several synthetic procedures used to prepare the thiosemicarbazones.

Abstract: An apparatus, using three gradiometers, measures the spatial variation of a agnetic field along a path of motion of the apparatus. The apparatus comprises three gradiometers oriented along the mutually orthogonal axes, x', y' and z' defined on the moving platform. The outputs of the gradiometers are the gradients of the magnetic field when the motion is considered to be in the y' direction. Three filters, each having an input connected to the output of one of the gradiometers, are constructed to have an output signal which has a relatively narrow positive peak with a relatively wide negative area on each side of the peak. The net area is approximately zero when the input to the filter is a doublet. Three squares, each having an input connected to the output of a filter, square their input signals. A summer, having three inputs connected to the outputs of the squarers, obtains the sum of the squares of the high-pass filtered components x', y' and z' of the magnetic field.

Abstract: A jet engine compressor stage puller engages the lip of each disk and spa section of a jet engine compressor, and the end of the compressor shaft. A guide bar has a central threaded hole through which a bolt is threaded. A cup integral with the bolt engages the end of the compressor shaft. A pair of guide rods pass through slots in the guide bar, the slots being symmetrical about the central threaded hole. Shoes attached to the ends of the guide rods engage the lip of each disk or spacer section to be removed. As the bolt is rotated a force is exerted to pull the shoes upward, and thus loosen the disk and spacer stages without danger of damage to compressor parts or hazard to personnel.

Abstract: A semiconductor multi-color filter spectrum analyzer is created by multiple pitaxial layers of varying composition. A DC sweep voltage is used to successively deplete the epitaxial layers. An AC voltage is used to modulate the absorption edge of the individual layers.A modification of this device concept is a variable bandwidth detector in which the spectral bandwidth is a function of the applied DC voltage.

Abstract: An article and method is provided for remotely optically measuring high transient isotropic pressures. The arrangement employs a fluorescent crystal (such as a ruby) secured to one end of an elongate optical fiber waveguide for placement in the vicinity of a high pressure occurrence such as near an explosion. Light launched into the free end of the waveguide travels the length thereof to stimulate the crystal, which in the case of a ruby, fluoresces in the red, the wave length of which varies in response to isotropic pressure on the ruby. This red light output is transported back along the same optical fiber waveguide to the free end where its wavelength change is monitored and translated into a pressure value on the crystal.