Abstract: An automated anthropometric data measurement system includes a standing muring assembly and a seated measuring assembly to determine pertinent anthropometric features of aviators being screened for assignment to particularly suitable aircraft. Both assemblies have a plurality of position sensors and measuring probes which are selectively placed by an operator upon the aviator, each measuring probe producing a digital data signal indicative of the particular feature measured when selective position sensors indicate body contact. The signals are then collected by a microcomputer which compares them to a predetermined population and outputs the compared data to magnetic storage media.

Abstract: A dual redundant pitot-static sensing system for use in a system for deplng a parachute during ejection of an occupant from a disabled aircraft includes a pair of pressure-sensitive check valves to store peak dynamic airstream pressure for obviating difficulties experienced when the pitots are blocked by airborne debris.

Abstract: A electrooptic systolic array architecture performs matrix-matrix multiplication using incoherent light. The incoherent light is collimated and passed through a polarizing beamsplitter and onto a pair of optically reflecting light valves. Each of the valves has a number of cells which are continuously being updated in a clocked sequence to vary their reflectivity in accSTATEMENT OF GOVERNMENT INTERESTThe invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

Abstract: A magnetic proximity sensor for detecting the proximity of a laterally mog magnetized target moving along a translation axis which is parallel to a line joining the targets magnetic poles, including: two ring-core flux-gate magnetometers disposed adjacent to each other with their axes of sensitivity in parallel, with both axes perpendicular to the magnetized target translation axis. The energizing coils of the flux-gate magnetometers are driven by an ac signal at frequency f.sub.o. The signal on the detecting coils in each flux-gate magnetometer is applied to a phase comparator via a bandpass filter tuned to the second harmonic of f.sub.o. When the signals applied to the phase comparator are of opposite phase, then the center plane equidistant from the target's magnetic poles is between the two axes of sensitivity of the magnetometers. When the signals are of the same phase, then the target's center plane is laterally outside of the these two axes.

Abstract: A fiber optic magnetometer for detecting DC magnetic fields includes a first optical fiber having a magnetostrictive jacket thereon which defines a sensing arm, and a second fiber defining a reference arm. A first AC magnetic field of frequency .omega..sub.o and a second AC field of frequency .omega..sub.s are imposed on the magnetostrictive jacket so as to cause a time varying optical path length change, having .omega..sub.o, (.omega..sub.o +.omega..sub.s), and (.omega..sub.o -.omega..sub.s) components in the sensing arm fiber. This induces a corresponding time varying phase shift, also having the above components, in light transmitted through the sensing arm fiber which is detected by a phase detector. The phase detector produces a signal proportional to the phase shift, this signal being passed to a lock-in amplifier set to amplify at .omega..sub.o. .omega..sub.s is sufficiently small such that the lock-in amplifier filters all components other than the .omega..sub.o, (.omega..sub.o +.omega..sub.s), and (.

Abstract: A method for synthesizing arbitrary broadband signals for a parametric ar which computes the input waveform needed to a parametric array source to obtain a received signal of a prescribed waveform. The method uses Fourier transform and the inverse transform of digitized received signal in order to make computation in either the frequency domain or the time domain depending upon the computational simplicity in a particular domain. The method uses a iterative process to obtain the received signal very close to the received signal of the desired waveform.

Abstract: A gas generating composition containing glycidyl azide polymer and a high trogen content additive selected from the group consisting of guanylaminotetrazole nitrate, bis(triaminoguanidinium)5,5'azotetrazole, ammonium 5-nitraminotetrazole and high bulk density nitro guanidine generates large quantities of nitrogen gas upon burning and can be used to extinguish fires.

Abstract: A diffractive radiation shield for protecting eyes and radiation sensitive devices from laser radiation. The shield utilizes one or more holograms disposed on transparent substrates. These holograms consist of spherical holographic fringes recorded in a dischromated gel with which the substrates are coated. The holographic fringes reflect laser radiation which is normal to their respective surfaces. Reflectivity is maximized for a particular wavelength by proper selection of the fringe spacing. The shield may be configured as a visor for an aviator's helmet.

Abstract: A seawater battery has been provided which includes an anode and a cathode, he anode being a flexible sheet of anode material and the cathode being a flexible foil of cathode material. An insulative flexible film joins one side of the cathode foil to one side of the anode sheet so as to form a flexible bilaminar composite. A device is operatively associated with the bilaminar composite for providing it positive buoyancy in seawater, and a ballast device is connected to a bottom edge of the bilaminar composite. An electrical lead is connected to the anode sheet and an electrical lead is connected to the cathode foil at a common edge of the bilaminar composite and in close proximity to one another. The bilaminar composite is flexed to a compacted condition, and a device is provided for releaseably retaining the bilaminar composite in the compacted flexed condition.

Abstract: A method for bonding a thin metal sheet to a rigid body utilizes pneumatic cylinders compressing a spreader bar against components to be bonded. C clamps specially designed to hold the pneumatic cylinders are used to hold the components in place. Heat is applied to the bonding surfaces for curing for a predetermined period of time.

Abstract: A fiber optic magnetometer for detecting DC magnetic fields includes a first optical fiber having a magnetostrictive jacket thereon which defines a sensing arm, and a second fiber defining a reference arm. An AC magnetic field of frequency .omega..sub.o and constant amplitude is imposed on the magnetostrictive jacket so as to cause a time varying optical path length change, having an .omega..sub.o component, in the sensing arm fiber. This induces a corresponding time varying phase shift, also having an .omega..sub.o component, in light transmitted through the sensing arm fiber which is detected by a phase detector. The phase detector produces a signal proportional to the phase shift, this signal being passed to a lock-in amplifier set to amplify at .omega..sub.o. The lock-in amplifier produces an output signal proportional to the amplitude of the .omega..sub.o component, wherein this amplitude is proportional to any DC magnetic fields to which the device is exposed.

Abstract: A new polynitro compound pentanitrophenyl azide is disclosed, and a method of preparation is disclosed wherein hexanitrobenzene is reacted with sodium azide. This new polynitro compound is useful as an explosive.

Abstract: A device for the high speed recording of photon images and nonrepetitive electrical waveforms which comprises a waveform recorder wherein surface acoustic waves excited in a can be GaAs, not layered piezoelectric-insulator-semiconductor layered structure produce a traveling electric field in the semiconductor substrate. Charges stored in the traveling potential wells and representing the instantaenous amplitude of a waveform to be recorded are transferred at static wells when a gate is dropped. Because each successive traveling well represents a different time instant of the waveform, the different spatial locations of the static wells correspond to different times. The output signal from the static wells can be selectively delayed before application to a display oscilloscope to enable display of the waveform at a rate many times slower than the actual frequency of the signal waveform.

Abstract: A flexible trailing shield for providing nonreactive gas shielding to arc lding operations comprises a housing formed of interlocking transverse segments adapted to flexibly cover weld surfaces having varying configurations. The housing has a torch entrance port for slidably receiving a welding torch, a conduit for receiving gas into the housing, a foraminous material to uniformly distribute the gas within the housing, and a pervious structure through which the gas is dispersed over the weld surface.

Abstract: An improved bifurcated multi-lever fiber optic transducer comprising one ht transmitting fiber and two receive fibers having different core diameters separated at one end and combined at the common distal end in the vicinity of a reflective surface parallel to the fiber end plane which is sensitive to axial motion caused by minute pressure changes, either in air or water, such that any displacement of the reflector from equilibrium will increase or decrease the illuminated areas of the two receive fibers which can be used to generate a processed output signal proportional to this motion. The resulting probe is of minimal diameter, has significantly improved sensitivity and produces an output independent of power variations at the input.

Abstract: A highly maneuverable straddle carrier vehicle structure is provided for dling various sizes of containers and outsized loads over rough, unleveled, weak and unprepared soils to meet austere requirements which are beyond the capability of commercial straddle lifts that normally operate on prepared surfaces within specific boundaries of yards and docks. Features include high flotation tires capable of operation over marginal terrain, fording capability, all wheel 360 degree steering and offset wheel yokes which permits automatic changing of wheelbase dimensions for rugged sloping terrain operations and wheel positioning for optimum mobility including lateral and oblique movement and vehicle rotation within its own length for a variety of close quarters operations. Load stabilization devices permit container securing during transit and hinged transverse members operate to reduce torsion and bending moments on the vehicle structure over severe terrain.

Abstract: A mechanism for inserting and aligning electronic modules, especially in se configurations, is provided with removable ring or sleeve whereby the module assemblies may be automatically retracted. The removable ring or sleeve is installed near the threaded end of each mounting shaft. When a shaft is unscrewed from the chassis the ring or sleeve bears against a shoulder formed in the end-portion of the module assembly heat sink frame, thereby providing a lifting force on the module assembly. The ring or sleeve is easily installed or removed through an opening in the side of the end-portion.

Abstract: A device for producing intensity-modulated light over a broad frequency range comprising a frequency tunable light soruce, a control line for controlling the frequency of the light source to provide a first frequency at a first time and a second frequency at a second time, and an interferometer with a differential path length. The interferometer functions to recouple the light frequencies after propagating along different interferometer paths to effect a frequency beating. The resulting beat frequency is the intensity-modulated light.

Abstract: A minesweeping cutter device includes a tubular body closed at one end and aving a cable engaging recess at the other end, a barrel member reciprocable in the body by cable engagement to fire a chisel propelling charge. The chisel has its cutting edge spaced from the cable until the charge is fired so that a reliable cutting velocity is achieved before impact. An erecting vane has a sweep wire channel and is provided with a sliding gate on a guide rail that diverges angularly from the axis of the channel.

Abstract: A radar doppler processor, comprising M, M=N-1, tap delay lines; N digital multipliers; a N-point fast fourier transform network; and a fast orthogonalizing network to orthogonalize each subband output signal to eliminate cross-correlations between all output signals.