USA As Represented by Secretary of the Navy

Sun Ventures, Inc.

Stanley E Wood

Kenneth L Moore

William L Black

Robert A Weinhardt

James T Bryant

Abraham Daniel Schneider

Bertram O Stull

Robert A Gould

Prills of ammonium dinitramide (ADN) are prepared by melting this salt with a stabilizer and, by dry nitrogen pressure, injecting the molten salt i an inert, perfluorinated carrier liquid of greater specific gravity which, initially, is above the solidification temperature of the salt. The molten salt and carrier liquid pass together in turbulent flow through a heated conduit in which stationary vanes disperse the salt into droplets. The liquid and salt then pass in turbulent flow through a cooled conduit for solidification of the salt into prills without agglomeration. The prills are then separated from the liquid by flotation and any liquid carried with the prills recycled. The main flow of carrier liquid is pumped through a preheater and then back to the molten salt injector. The cooled conduit is provided with compression refrigeration, the refrigerant passing in parallel flow along the conduit and the compressed refrigerant passing to the preheater before condensation.

Apparatus for prilling an oxidizing salt of ammonia

Prills are prepared by melting a salt and introducing the molten salt into carrier liquid. Oxidizing salts of ammonia, ammonium nitrate (AN) and ammonium dinitramide (ADN) are melted with a stabilizer and introduced by dry nitrogen pressure into an inert, perfluorinated carrier liquid of greater specific gravity than the molten salts. In a first embodiment, the carrier liquid is quiescent and below the salt solidification temperature so that prills solidify from drops of the salt rising through a column which substantially retains the liquid. In a second and continuous embodiment, the carrier liquid is initially above the solidification temperature, and the salt is injected into the moving liquid which passes with the molten salt in turbulent flow through a heated conduit, in which stationary vanes disperse the salt into droplets, and then through a cooled conduit for solidification of the salt into prills without agglomeration. In the both embodiments, the prills may be separated from the liquid by flotation and any liquid carried with the prills recycled. In the continuous embodiment, the main flow of carrier liquid is pumped through a preheater and then back to the molten salt injector.

Prilling by introduction of a molten liquid into a carrier liquid

A hybrid gun propellant containing an oxidizer rich liquid monopropellant d an oxidizer deficient single based solid propellant.

Hybrid gun propellant

A mixture of aqueous nitric acid (about 90 volume percent HNO.sub.3 and 10 volume percent H.sub.2 O) and Decalin are used as a propellant for a liquid propellant gun.

Propellant for liquid propellant gun

A light detector with level shift and shaped pulse is obtained by circuitry hich provides both short turn off time and high sensitivity. The phototransistor does not provide the reference signal until nearly at maximum output.

Level-shift and pulse shaping circuitry

A composition of matter consisting essentially of a polar fuel, a particue gelling agent and a mixture of two polyfunctional alcohols, one having an ether linkage and the other having no ether linkage. The composition is useful as a fuel for a fuel air explosive device.

Gelled FAE fuel

A liquid propellant gun and gun loading process wherein a predetermined ant of a gas is intimately mixed with the propellant charge.

Liquid propellant gun

Measurement and correlation of chamber pressure and projectile position d is accomplished using an array of phototransistors, illuminated by collimated light, which phototransistors are sequentially switched off due to the interruption of the collimated light by the passing projectile. Pulses generated thereby may be displayed on an oscilloscope along with the pressure-time trace.

Apparatus for determining projectile position and barrel pressure

Nitric acid and n-octane are injected into a gun and utilized to propel pectiles.

An improvement to a liquid propellant gun system wherein a hydrocarbon used n conjunction with nitric acid is predominantly the exo form of tetrahydrodicyclopentadiene and/or its methyl or dimethyl or ethyl derivatives or a mixture thereof. Other suitable hydrocarbons are as follows: a mixture of trans-syn-2-methyldecalin and trans-anti-1-methyldecalin, trans-perhydroacenaphthene and perhydrofluorene.

Growing community of inventors

Inyokern, CA, United States of America

Stanley E Wood