US Government As Represented by the Secretary of the Army

Sheldon J Cytron

Jerry C LaSalle

Ravi Batra

Shiping Chen

Christopher J LaVigna

William P Keown, Deceased

Justin M Bowlus

Harry G Kwatny

Kenneth Willison

An apparatus for measuring exit velocity of a round from a muzzle of a gun barrel includes a first optical fiber having a first fiber optic Bragg grating (FBG) circumferentially attached to the gun barrel at the muzzle and a second FBG circumferentially attached to the gun barrel further from the muzzle than the first FBG; a coupler that receives one end of the first optical fiber; a light source connected by a second optical fiber to the coupler for supplying light to the first optical fiber; a third optical fiber comprising an FBG notch filter, the third optical fiber being connected to the coupler to receive light reflected from the first optical fiber; a notch filter mount attached to the gun barrel, the FBG notch filter being disposed in the notch filter mount; a photodetector connected to an end of the third optical fiber; and data processing electronics electrically connected to the photodetector.

Apparatus and method for measuring exit velocity of a gun round

An apparatus and method for detecting a leak by mixing an amount of odorant ith the contents of a sealed container. An amount of odorant having a detectable odor is mixed with the contents of a sealed container. The sealed container with the odorant is placed within a detection zone which is monitored to detect the presence of the odorant which would indicate leakage of the container's contents. The detection zone defines an area within which leakage of the contents will produce a detectable quantity of the odorant. The odorant may be a gas. Preferred odorants are selected from the group consisting of sulfides, cyclic sulfides and mercaptans. In a sealed light source device having radioactive tritium gas, the preferred odorant is hydrogen sulfide which is detectable by individuals in concentrations of at least 5 parts-per-billion (ppb). Individuals, which may be part of a scheduled roving sentry or a patrol, monitor for the presence of the odorant in the detection zone. Mechanical, optical-mechanical, or other such devices may also be used to monitor the presence of the odorant within the detection zone.

Method of detecting leaks in sealed containers

A portable lightweight mortar utilizes a triangularly-shaped canvas base te designed to withstand the high resolved tensile loading stresses generated by mortar firings and transmitted to it by three truss rods which are disposed in grommets located in the canvas corners on one end and are attached by pin/trunnion swivels on its other ends to a gimbaled collar located on the cannon tube.

Lightweight mortar and baseplate apparatus

Armor and a method of making the same, where ceramic tile is placed in opngs of a frame of material and layers of material are in contact with opposite sides of the frame and the tile, and wherein the material of both the frame and the layers is passed through a superplastic state by applications of heat and pressure.

Method and apparatus for conformal embedded ceramic armor

This invention describes a process for producing copper alloys by rapid sdification in order to improve their strength and thermal stability after being exposed to elevated temperatures. The method used to rapidly solidify the molten alloy is either by use of a high pressure non-oxidizing gas spray to atomize the molten alloy into a powder or to pour the molten alloy onto a rotating wheel to form a ribbon which is then attrited into powder. The powder is canned, compacted to full density and cold worked to the desired shape.

Method of producing copper alloys with manganese and selenium to improve

A method for making uranium-tungsten alloy of high strength comprising raly chilling a molten solution of tungsten in uranium to form a ribbon. Subsequent to pulverizing and consolidation, heating effects a precipitation of tungsten in the uranium to effect significant strengthening. A strengthened uranium with 1/2-5%, by weight of tungsten is particularly useful for KE penetrators.

Precipitation strengthened uranium tungsten alloy

A projectile-sabot assembly includes a projectile rod enclosed by a pluray of sabot pieces and a plurality of heat sensitive shape memory alloy metal shims positioned so that when the assembly is fired, the shims heat up and expand to exert separating forces on the sabot pieces.

Projectile and sabot assembly

A method for casting a rotating band onto a projectile having a metallic ll, with a nose at one end, a closed base at the other end, and a hollow core axially formed within said shell. The method comprises the steps of (a) forming a projectile mold having three sections, a first section for the nose, a second section for the closed base, and a third section for the rotating band seat; (b) casting hot metal into the mold; (c) removing the mold from the third section so as to expose the rotating band seat therein; (d) clamping a ring mold about the rotating band seat; (e) casting hot metal into the ring mold to form a rotating band within and above the rotating band seat; and (f) cooling the projectile.

Method for casting a rotating band onto a projectile

A sonic converter is mounted in a housing assembly into which a depleted nium rod can be conveniently press fitted and subsequently easily released, for ultrasonic vibrational treatment to reduce residual stress in the rods. The sonic converter is constructed to operate in high temperature environments due to its internal thermal insulation, and an externally connected cooling device. The sonic converter is comprised of a transducer which converts electrical energy into mechanical, vibrational energy, and a horn which amplifies the vibrational energy to the DU rod.

Residual stress reduction of processed DU alloy rods

A novel method is provided for producing metallic glass reinforced metal rix composites possessing good interfacial bonding between the metallic glass and the metal matrix without gross degradation of the metallic glass or metal matrix. A layer of metallic glass in suitable form, e.g. ribbon, wire or flake, is placed between layers, e.g. sheets, of metal matrix material, which exhibits superplastic flow at a temperature below the crystallization temperature of the metallic glass material. The resulting structure is compressed at a temperature below the crystallization temperature of the metallic glass and sufficient to produce extensive superplastic flow of the metal matrix material.

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Mountain Lakes, NJ, United States of America

Sheldon J Cytron