Abstract: In a process of preparing an infrared sensitive photodiode comprising the eps of(1) forming by vacuum deposition an epitaxial layer of a semiconductor alloy material selected from the group consisting of PbS, PbSe, PbTe, PbS.sub.x Se.sub.1-x, PbS.sub.x Te.sub.1-x, PbSe.sub.x Te.sub.1-x, Pb.sub.y Sn.sub.1-y S, Pb.sub.y Sn.sub.1-y Se, Pb.sub.y Sn.sub.1-y Te, Pb.sub.y Sn.sub.1-y S.sub.x, Pb.sub.y Sn.sub.1-y S.sub.x Te.sub.1-x, Pb.sub.y Sn.sub.1-y Se.sub.x Te.sub.1-x, Pb.sub.z Cd.sub.1-z S, Pb.sub.z Cd.sub.1-z Se, Pb.sub.z Cd.sub.1-z Te, Pb.sub.z Cd.sub.1-z S.sub.x Se.sub.1-x, Pb.sub.z Cd.sub.1-z S.sub.x Te.sub.1-x, and Pb.sub.z Cd.sub.1-z Se.sub.x Te.sub.

Abstract: Explosive compounds of the formulas ##STR1## where R is --CH.sub.2 C(NO.sub.2).sub.2 CH.sub.3, --CH.sub.2 C(NO.sub.2)b.3 --CH.sub.2 CF(NO.sub.2).sub.2, or --CH.sub.2 CF.sub.2 (NO.sub.2) and R' is --CH.sub.2 CF(NO.sub.2).sub.2 or --CH.sub.2 CF.sub.2 (NO.sub.2); ##STR2## where R is --CH.sub.2 C(NO.sub.2).sub.3 or --CH.sub.2 CF(NO.sub.2).sub.

Abstract: An electric wave operating device for efficiently coupling electromagnetic energy from a waveguide into a dielectric element or vice versa. A waveguide horn portion is chosen for radiating in the primary HE.sub.11 mode and designed to have a predetermined HE.sub.11 mode farfield radiation pattern. A dielectric member is securely disposed with one end in the plane of the aperture of the waveguide horn with the dielectric member having a predetermined HE.sub.11 mode farfield radiation pattern substantially equal to the farfield radiation pattern of the horn.

Abstract: Pentafluorosulfanyl polynitroaliphatic explosive compounds of the formulas ##STR1## where R is --CH.sub.2 C(NO.sub.2).sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 C(NO.sub.2).sub.3, --CH.sub.2 CF(NO.sub.2).sub.2, and --CH.sub.2 C(NO.sub.2).sub.3 ; ##STR2## where R is --CH.sub.2 C(NO.sub.2).sub.2 CH.sub.2 --, --CH.sub.2 C(NO.sub.2).sub.2 CH.sub.2 OCH.sub.2 OCH.sub.2 C(NO.sub.2).sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 N(NO.sub.2)CH.sub.2 CH.sub.2 N(NO.sub.2)CH.sub.2 CH.sub.2 --, and --CH.sub.2 CH.sub.2 N(NO.sub.2)CH.sub.2 C(NO.sub.2).sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --.

Abstract: A method of manufacturing composite propellants which include compounding e propellant with an extended final mix cycle, partially curing the propellant mixture to a specified hardness, and extruding the propellant under certain conditions.

Abstract: A process for preparing 2,5-dipicryl-1,3,4-oxadiazole by reacting N,N'-bi,4,6-trinitrobenzoyl)hydrazine with phosphorus pentachloride in a chlorinated hydrocarbon which is 1,2-dichloroethane, 1,1,1-trichloroethane, 1,1,2-trichloroethane, 1,1,2-trichloroethylene, or a mixture thereof at a temperature of from 70.degree. C. to the reflux temperature.

Abstract: A high frequency active filter is presented having an amplifier having an en loop gain between one and three which is provided with appropriate electrical components of appropriate values for generating the desired filter configuration of pole-zero pairs with no intentional connection between the negative input terminal of the amplifier and the output terminal of the amplifier.

Abstract: A metallic glass ribbon of the formulaFe.sub.w B.sub.x Si.sub.y C.sub.zwherein0.78.ltoreq.w.ltoreq.0.83,0.13.ltoreq.x.ltoreq.0.17,0.03.ltoreq.y.ltoreq.0.07,0.005.ltoreq.z.ltoreq.0.03,andw+x+y+z=1,is annealed to remove mechanical strains and exposed to a magnetic field in the plane of the ribbon and transverse to the long axis of the ribbon. The resulting metalic glass ribbons have very large magnetic coupling coefficients (k.sub.33 >0.9). The treated ribbons are useful in magnetostrictive transducers and in passive listening devices such as hydrophones or pressure sensors.

Abstract: Bis(2-fluoro-2,2-dinitroethoxy)(1-fluoro-1,1-dinitro-2-propoxy)methane wh is useful as an energetic coplasticizer with bis(2-fluoro-2,2-dinitroethyl)formal in plastic-bonded explosives.

Abstract: A non-aqueous lithium electrochemical cell which includes a halocarbon cade depolarizer which is 1,2-dichloroethane, 1,1,2-trichloroethane, 1,1,2,2-tetrachloroethane, 1,2-dichloro-1,1-difluoroethane or mixtures thereof and a cathode catalyst which iscopper,rhodium,palladium,cobalt phthalocyanine,nickel phthalocyanine,iron phthalocyanine,a cobalt tetraaza-[14]-annulene,a nickel tetraaza-[14]-annulene,a iron tetraaza-[14]-annulene,a cobalt porphyrin,a nickel porphyrin,a iron porphyrin, or a mixture thereof.

Abstract: 2,2,2-trinitroethyl 2-nitroxyethyl ether (TNEN), C(NO.sub.2).sub.3 CH.sub.2 CH.sub.2 CH.sub.2 ONO.sub.2, which is prepared by the following reaction sequence:C(NO.sub.2).sub.3.sup.- K.sup.+ +ClCH.sub.2 OCH.sub.2 CH.sub.2 BR.fwdarw.C(NO.sub.2).sub.3 CH.sub.2 OCH.sub.2 CH.sub.2 Br C(NO.sub.2).sub.3 CH.sub.2 OCH.sub.2 CH.sub.2 Br+AgNO.sub.3 .fwdarw.C(NO.sub.2).sub.3 CH.sub.2 OCH.sub.2 CH.sub.2 ONO.sub.2.2,2,2-trinitroethyl 2-nitroxyethyl ether is useful an an energetic plasticizer, for example in LOVA gun propellants.

Abstract: A liquid hydrocarbon ramjet fuel containing a additive which is a diazido kane of the formula N.sub.3 CH.sub.2 (CH.sub.2).sub.n CH.sub.2 N.sub.3 wherein n is an integer of from 1 to 20 or a diazido alkanol of the formula N.sub.3 CH.sub.2 (CH.sub.2).sub.x CHOH(CH.sub.2).sub.y CH.sub.2 N.sub.3 wherein x is an integer of from 0 to 9, y is an integer of from 0 to 19, x+y is an integer of from 0 to 19, and x.ltoreq.y.

Abstract: A molten metal-liquid explosive device comprising:(1) a metal casing enclosing an inner space;(2) a fusable metal wall dividing the inner space into a liquid chamber and pyrotechnic material chamber;(3) a liquid (e.g., water) contained in the liquid chamber;(4) a pyrotechnic material essentially comprising an intimate mixture of(a) a magnesium nickel alloy hydride of the formula MgNi.sub.x H.sub.y wherein 0<.times..ltoreq.0.50 and 1.50.ltoreq.y.ltoreq.2.00 and(b) a oxidizer selected from the group consisting of CuO, Li.sub.2 O.sub.2, BaO.sub.2, and mixtures thereof;wherein the molar ratio of oxidizer to magnesium nickel alloy hydride (MgNi.sub.x H.sub.y) is from about 0.75:1 to about (1.50+0.5y):1 andwherein the pyrotechnic material is contained in the pyrotechnic material chamber in an amount sufficient to melt the fusable metal wall dividing the liquid chamber and the pyrotechnic material chamber; and(5) means for igniting the pyrotechnic material.

Abstract: A data collection system is configured using, inter alia, a master proces and a plurality of slave processors one for each data source to be collected. The slave processors depend upon the master processor for system timing and interpretation of operator commands via a display/keyboard. Each slave processor is a dedicated independent microcomputer whose software is customized for the data collection required. Overhead software for the slave processor is minimized by the use of a simple command structure between the master processor and the plurality of slave processors.

Abstract: The present invention is an apparatus and method for the non-destructive ting of the anisotropic magnetoresistance parameters of a film. A plurality of contacts points are securely disposed in a generally planar support means and engagable with a surface of the film for measuring the anisotropic magnetoresistance parameters of the film in accord with a predetermined equation.

Abstract: A shell feeding system comprising an endless loop, nondisintegrating link lt 14 within a magazine 12 for moving telescoped shells into an extraction position where they are side stripped and transferred to a ram load position. A hydraulic cylinder 48 is used to incrementally index belt 14 placing a round into position. Another hydraulic cylinder 76 accomplishes the transfer of an extracted shell 16' to the cannon load position.

Abstract: An asbestos-free intumescent thermal protection coating consisting essently of from 0.5 to 1.5 weight percent of a ceramic fiber that comprises from 40 to 50 weight percent of Al.sub.2 O.sub.3, 50 to 60 weight percent of SiO.sub.2, from 0.5 to 1 weight percent of Fe.sub.2 O.sub.3, and from 1.2 to 2 weight percent of TiO.sub.2, the fiber having the dimensions of less than 3.2 millimeters in length and from 0.8 to 1.2 micrometers in diameter and from 98.5 to 99.5 weight percent of a polysulfide-epoxide binder. The binder may include a filler.

Abstract: A process for preparing 1,4,4,5,5,6,6-heptafluoro-2-trifluoro-3-oxaheptan,7-diol polyformal by the following steps in order:(1) reacting 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol with formaldehyde in 80-90% (w/w) sulfuric acid in the presence of methylene chloride to produce 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal;(2) treating the reaction mixture with aqueous H.sub.2 O.sub.2 to destroy free formaldehyde;(3) removing methylene chloride from the reaction mixture;(4) extracting the product 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal from the reaction mixture with ether;(5) agitating the ether extract with an aqueous solution of (a) H.sub.2 O.sub.2, (b) KOH or NaOH, and (c) NaCl or KCl to convert hemiformal end groups into hydroxy end groups; and(6) isolating the product 2,4,4,5,5,6,6-heptafluoro-2-trifluoromethyl-3-oxaheptane-1,7-diol polyformal.

Abstract: A rugged portable diagnostic apparatus is configured for temporary installation and operation on board Naval ships. The apparatus provides gunnery training support by allowing a comprehensive empirical assessment and feedback of individual, team and equipment performance on an economical and environmentally responsible basis.

Abstract: A process for preparing 2,2,2-trinitroethyl 2-nitroxyethyl ether by the fowing reaction sequence: ##STR1## 2,2,2-Trinitroethyl 2-nitroxyethyl ether is useful as an energetic plasticizer in propellants and explosives.