Abstract: A floating torch burning polydimethylsiloxane to provide a decoy over the termediate infrared spectrum of a ship.

Abstract: A data analysis system accepts time related data samples which are develo from sets of common wavefronts incident upon a plurality of sensors. The data samples are converted from analog-to-digital form and the Fourier transforms relative to the frequency components are generated. The frequency components of the Fourier transforms are in turn cross-correlated for developing matrices of all possible correlations for each frequency component and then the matrices are integrated over a determinable time period. The resultant integrated matrices are compared with signals representative of an incident plane wave power as a function of its angles of arrival at a sensor array and of its frequency, producing output signals of relative strength indicative of the direction of the origin of the data samples.

Abstract: A structure for support of a volumetric transducer array that self-erects en deployed in water. Dual assemblies of radially arranged telescoping arms are coaxially aligned to support a plurality of linear transducer arrays which are secured to the ends of corresponding arms between the assemblies. The arms are each telescoped outwardly by respective support cables which are tensed by suspending the deployed array between a float and a terminal mass.

Abstract: 2-(4-pyridyl)-5-aryloxazoles and certain quaternary salts of these compounds are useful as visible-wavelength lasing dyes. These dyes are used in solution with non-interferring polar solvents, such as low molecular weight alcohols, H.sub.2 O, and D.sub.2 O, to form lasing media useful in dye lasers. Such lasers generally include a reservoir for containing the laser dye solution and a pumping energy source operably coupled therewith for producing stimulated emission of the dye solution.

Abstract: A long line hydrophone wound with a pair of bifilar ribbons that are connected to a constant current high frequency source.

Abstract: A monolithic multi-point initiator for a warhead wherein a single detonator s connected by multiple interconnected conduits packed monolithically with an initiator compound that delivers detonating waves to a series of multi-point explosive charges or pellets located at or near either end of the warhead.

Abstract: An analog adaptive filter for deconvolving distorted signals. A clipped vion of the least mean square algorithm is implemented in a first embodiment by placing an acoustic surface wave storage correlator in a feedback loop and performing an iterative two step process to adjust the weight function of the correlator to make the output of the filter converge to a desired signal. In the first step, the distorted signal is applied to the top plate port of the storage correlator and the filter output from the acoustic port is delayed and subtracted from a training signal to produce an error signal. In the second step, the error signal is applied to the top plate port and the distorted signal is applied to the acoustic port which results in the correlation of the acoustic signal and the plate signal being added to the weight function stored in the storage correlator. The two step process is repeated until the filter output from the plate port converges to an approximation of the training signal.

Abstract: An aircraft ejection seat position and restraint system for protecting an rcrewman against back injuries during emergency escape. The ejection sequence is initiated by the aircrewman pulling a lower ejection handle or a face curtain handle with both hands to release or shatter the cockpit canopy. A torso harness suit is concommittantly tightened with inflation of a vest worn between the aircrewman and the suit, and catapult rockets are fired to propel the seat out of the cockpit. The harness suit draws the aircrewman's upper torso against the back of the seat while the inflated vest pushes his hips back and down into the seat pan for optimally positioning his spine before ejection thereby negating the effects of an aircrewman purposely or inadvertently flying with a loose harness. After ejection, the seat is separated from the aircrewman but the vest remains inflated inside the harness providing cushioning against the opening shock force of the parachute which is attached to the harness suit.

Abstract: An interferometrically tuned laser resonator for selectively resonating at desired wavelength or fluorescent line. A dielectric reflector having reflectance characteristics which shift toward shorter wavelengths at incident angles not normal thereto is rotatably mounted at one end of a laser cavity along its axis. Rotation of the reflector permits adjustment of the incidence angle to obtain maximum cavity gain at a desired fluorescent line over adjacent competing lines.

Abstract: A self-retaining locking assembly for threaded couplings. An externally threaded bolt rod end bearing is threadedly secured to a nut or internally threaded piston rod. The bearing includes an axially extending keyway along the threads, and the piston rod includes a circumferential groove at the mating end as well as radially extending slots in the mating face. An annular lock member has a lug projecting radially inwardly of the central aperture for engaging the keyway, and ribs and clips for mating with the radial slots and annular groove, respectively, when the rod is threaded upon the bearing. The lock member therefore cannot rotate relative to the bearing, and the piston rod cannot rotate relative to the lock member whereby the entire assembly is secured together in fixed relationship.

Abstract: A system for evaluating tolerance to high acceleration as a function of visual field perimeter and psychomotor tracking ability. A semicircular array of light-emitting diodes (LED's) subtend the lateral field of view of a subject. Pairs of opposed LED's are sequentially illuminated inwardly or outwardly at a programmed rate. A control stick manipulated by the subject provides a nulling signal for maintaining a desired pair of LED's illuminated.

Abstract: The inclusion in a double base propellant of a ballistic modifier selected rom the class consisting of copper, lead, tin, and bismuth chelates of a dihydroxybenzophenone or alkoxyhydroxyphenzophenone.

Abstract: A digitally activated display scale in association with digital-electronic ircuitry, displays both the airspeed and airspeed trend of a landing aircraft. The digital/electronic circuitry process an analog voltage corresponding to an airspeed range of 80 to 179 knots to produce a digital number representative of the airspeed of the landing aircraft. The digital number is used to produce a continuous display of the airspeed and to indicate the trend of the airspeed as either increasing or decreasing.

Abstract: An apparatus for and a method of determining the material properties of a dielectric and/or conducting radar target by deciphering the backscattered signals returned from the target is disclosed. The resonance "code" of the echo signals from the target is a function of the width and spacing of the resonant spectral lines in the transverse electric (TE) and transverse magnetic (TM) modes of the returned signals. The resonances present in any TE or TM mode become uniformly spaced and of uniform width at high frequencies. The uniform spacing between adjacent resonances is used to uniquely determine the dielectric constant of the material comprising the target, and their uniform width is used to uniquely determine its thickness.

Abstract: Uniquely integrating a search mirror and a deflection mirror with a passive ptical rangefinder and a remote sextant, enhances the operation of both devices. The improved rangefinder/sextant provides day/night 360.degree. azimuthal and at least -5.degree. to about 60.degree. elevational search capability with the additional capability of pointing the search mirror at a navigational star in a direction different from that of an imaging camera. Thus, the imaging camera, can be pointed at the sea horizon that is least obscured by haze and/or sea clutter, thereby allowing altitude readings under adverse conditions.

Abstract: N,N,N',N'-tetrakis(2-fluoro-2,2-dinitroethyl) oxamide, ##STR1## which is prepared by the following reaction sequence ##STR2## N,N,N',N'-tetrakis(2-fluoro-2,2-dinitroethyl) oxamide is a high density, energetic explosive which is melt castable as well as thermally and hydrolytically stable.

Abstract: A digital m of n correlation device using signal and reference shaft registers, modulo 2 adders, unique 1-bit D/A converters, and single resistor analog summing provides a very fast correlation product for pulse compression modulations such as phase or frequency shift keying. The compression ratio for the digital m of n correlation device, according to the present invention, is 168:1 (equal to the number of bits). The device is capable of bit rates in excess of 100 Mbps and is well suited for LSI fabrication.

Abstract: Unsymmetrical carbonates of the formula ##STR1## are prepared by the following reaction sequence ##STR2## where R and R' can each be --CH.sub.2 C(NO.sub.2).sub.3, CH.sub.2 CF(NO..2).sub.2, --CH.sub.2 CF.sub.2 (NO.sub.2), --CH.sub.2 CCl(NO.sub.2).sub.2, --CH.sub.2 CF.sub.3, --CH.sub.2 CCl.sub.3, --CH.sub.2 C(NO.sub.2).sub.2 CH.sub.3, or --CH.sub.2 CF.sub.2 CF.sub.2 H, provided that R.noteq.R' and wherein R" is a lower alkyl group of from 1 to 6 carbon atoms.Also included are symmetrical 1,3-bis(halo- and nitroalkyl carbonyldioxy)-2,2-dinitropropanes of the formula ##STR3## which are synthesis by the following reaction sequence ##STR4## wherein R and R" are as defined above. The carbonates of this invention are useful as energetic additives to propellants and explosive.

Abstract: Unsymmetrical carbonates of the formula ##STR1## are prepared by the following reaction sequence ##STR2## where R and R' can each be --CH.sub.2 C(NO.sub.2).sub.3, CH.sub.2 CF(NO..2).sub.2, --CH.sub.2 CF.sub.2 (NO.sub.2), --CH.sub.2 CCl(NO.sub.2).sub.2, --CH.sub.2 CF.sub.3, --CH.sub.2 CCl.sub.3, --CH.sub.2 C(NO.sub.2).sub.2 CH.sub.3, or --CH.sub.2 CF.sub.2 CF.sub.2 H, provided that R.noteq.R' and wherein R" is a lower alkyl group of from 1 to 6 carbon atoms.Also included are symmetrical 1,3-bis(halo- and nitroalkyl carbonyldioxy)-2,2-dinitropropanes of the formula ##STR3## which are synthesis by the following reaction sequence ##STR4## wherein R and R" are as defined above. The carbonates of this invention are useful as energetic additives to propellants and explosive.

Abstract: A method of separating and ejecting a re-entry body from a booster rocket thout tip-off by igniting a pair of diametrically opposed rockets attached to the base of the re-entry body which provide thrust at an angle, and then firing a plurality of pyrotechnically operated separation nut assemblies, with the attachment bolts being captured in bolt catcher assemblies, to separate the re-entry body from the booster rocket, the pair of rockets providing separation velocity and spin to the re-entry body.