Abstract: Strong Lewis acids added to wet HF protonate the water to form stable OH.sub.3.sup.+ salts.

Abstract: Dinitrocyanoalkyl epoxides having the general formula: ##STR1## wherein R is a lower alkylene radical containing from 1 through 5 carbon atoms and n is 0 or 1.

Abstract: A solid propellant gas generator consisting of 45-65 weight percent calcium oxide, 25-45 weight percent calcium azide, and 8-11 weight percent calcium nitrate which produces pure nitrogen gas at temperatures above 2200.degree. K in the complete absence of other gaseous products and metallic vapors.

Abstract: 1,3-Diazido-2-nitrazapropane, is disclosed as an energetic plasticizer, together with a method for producing same.

Abstract: Chlorine trifluoride dioxide is disclosed for use as an oxidizer in formulating energetic compositions, such as propellants. The stable ClF.sub.3 O.sub.2 is produced by reacting a ClO.sub.2 F.sub.2 .sup.+ salt with a strong Lewis base at -78.degree. C.

Abstract: An improved method of synthesizing nitryl perchlorate by oxidizing chlorine nitrate with ozone.

Abstract: A solid propellant motor is fabricated by spreading a propellant onto an uncured reinforced fabric tape to a uniform thickness and then partially curing the mass to a semi-rigid state. The semi-rigid blanket is then rolled with an air gap between the spirally wound layers. The final configuration of the motor is subsequently fully cured.

Abstract: A liquid expulsion device having a tank enclosing a flexible bladder containing liquid to be expelled and an insoluble gas. Prior to expulsion the combined liquid and gas volume remains constant so that during environmental changes the bladder is forced into intimate flush contact with the tank and is incapable of flexing and becoming ruptured. Liquid is expelled through a surface tension screen that blocks passage of the gas.

Abstract: A stable unsubstituted sulfonium salt and method of isolating same.

Abstract: Triazanium perchlorate monohydrate is disclosed as a new composition of matter, together with a method of snythesizing such salts by amination of hydrazines by hydroxylamine-O-methylsulfonate.

Abstract: A regenerative laser device having remotely located optical components. A resonant cavity having a plurality of transverse modes is defined at one end by a highly reflective retrodirective member and at the other end by a retrodirective member formed of a converging lens and a highly transmissive mirror. A body of laser material is located within the resonant cavity, and there are provided means for exciting the material to create a loop gain of the device that is substantially equal to unity. A collimating lens receives light transmitted through the mirror. An energy source supplies additional energy into the resonant cavity through the collimating lens and mirror to increase the radiation, in at least one of the transverse modes, in the resonant cavity.

Abstract: A solid propellant gas generator system employing fluorocarbons as the primary binder and fuel and oxidizing salt wherein the oxidizing power resides in the cation to provide ozidizer-compatible combustion products. The thermal output may be tailored by adding small quantities of boron or carbon fuels and the composition of the combustion products may be tailored by varying the ratio of the fluorocarbon to the oxidizer.

Abstract: An inducer having a generally conical hub and a plurality of blades projecting substantially perpendicular to the axis of said hub; each of said blades being formed of alar configuration with the tip suction surface leading edges of said blades defining angles of .+-. 0.5.degree. with the relative flow direction of the incident fluid, and having the ratio of the spacing between adjacent blades to the clearance distance between said blade tips and an encircling housing greater than about 70.

Abstract: A family of gun propellants formulated with triaminoguanidine ethylenedinitramine (TAGED), as an oxidizer, to reduce the isochoric flame temperature while providing high mass impetus.

Abstract: A method of producing triaminoguanidine nitrate wherein a source of free nitrate ions is provided in an aqueous medium during reaction of guanidine nitrate and hydrazine to increase the yield of triaminoguanidine nitrate.

Abstract: Propellant inhibitors are provided for cellulose-containing particulate solid propellants, and particularly for nitrocellulose-containing gun propellants, in which the inhibitor is the reaction product of a polyfunctional isocyanate such as polymethylene polyphenyl isocyanate and a polyol such as polyethylene glycol.

Abstract: An accelerometer comprising a first glass plate mounted in a fixed position, a second glass plate mounted in spaced relation with said first plate and movable with respect to said first plate, an aligning agent coating the facing surfaces of said plates, a nematic liquid crystal mixture filling the space between said plates, means applying an electrical potential between the coated surfaces of said plates, and means for detecting optical characteristics within said liquid crystal mixture.