Lawrence Livermore National Security, LLC

The United States of America As Represented by the United States

Ut-battelle, Inc.

The United States of America As Represented by the Department of Energy

Andrew T Anderson

William C Moss

Terry W Alger

Phillip A Arnold

James William Klett

Jerome P Hall

An improved firearm suppressor is provided. The firearm suppressor generally includes a primary flow path and a secondary flow path. The primary flow path is centrally disposed within the suppressor and includes multiple internal chambers that are separated by conical baffles. The secondary flow path is helically disposed within the firearm suppressor. A diverter directs a portion of the propellant gas rearward, over a firearm barrel, before entering spiral lanes in the forward direction. The primary flow path slows the movement of propellant gas escaping through a projectile exit port, while the secondary flow path slows the movement of propellant gas escaping through a plurality of propellant gas exit ports.

Flow through suppressor with enhanced flow dynamics

The present disclosure relates to a suppressor for use with a weapon. The suppressor may be formed to have a body portion having a bore extending concentric with a bore axis of the weapon barrel. An opening in the bore extends at least substantially circumferentially around the bore. A flow path communicates with the opening and defines a channel for redirecting gasses flowing in the bore out from the bore, through the opening, into a rearward direction in the flow path. The flow path raises a pressure at the opening to generate a Mach disk within the bore at a location approximately coincident with the opening. The Mach disk forms as a virtual baffle to divert at least a portion of the gasses into the opening and into the flow path.

System and method for multi-stage bypass, low operating temperature suppressor for automatic weapons

A suppressor is disclosed for use with a weapon having a barrel through which a bullet is fired. The suppressor has an inner portion having a bore extending coaxially therethrough. The inner portion is adapted to be secured to a distal end of the barrel. A plurality of axial flow segments project radially from the inner portion and form axial flow paths through which expanding propellant gasses discharged from the barrel flow through. The axial flow segments have radially extending wall portions that define sections which may be filled with thermally conductive material, which in one example is a thermally conductive foam. The conductive foam helps to dissipate heat deposited within the suppressor during firing of the weapon.

Firearm suppressor having enhanced thermal management for rapid heat dissipation

A cooling structure ( ) for use inside a ceramic cylindrical tube ( ) of a metal vapor laser ( ) to cool the plasma in the tube ( ), the cooling structure ( ) comprising a plurality of circular metal members ( ) and mounting members ( ) that position the metal members ( ) coaxially in the tube ( ) to form an annular lasing volume, with the metal members ( ) being axially spaced from each other along the length of the tube ( ) to prevent the metal members from shorting out the current flow through the plasma in the tube ( ) and to provide spaces through which the heat from localized hot spots in the plasma may radiate to the other side of the tube ( ).

Large diameter lasing tube cooling arrangement

A segmented coaxial laser shell assembly having at least two water jacket sections, two pairs of interconnection half rings, a dialectric break ring, and a pair of threaded ring sections. Each water jacket section with an inner tubular section that defines an inner laser cavity with water paths adjacent to at least a portion of the exterior of the inner tubular section, and mating faces at the end of the water jacket section through which the inner laser cavity opens and which defines at least one water port therethrough in communication with the water jackets. The water paths also define in their external surface a circumferential notch set back from and in close proximity to the mating face. The dielectric break ring has selected thickness and is placed between, and in coaxial alignment with, the mating faces of two of the adjacent water jacket sections. The break ring also defines an inner laser cavity of the same size and shape as the inner laser cavity of the water jacket sections and at least one water passage through the break ring to communicate with at least one water port through the mating faces of the water jacket sections.

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Livermore, CA, United States of America

Andrew T Anderson