US Government as Represented by the Secretary of the Army

Brian Donovan

Adam L Foltz

Kevin Russell

Darin J Sharar

Ronny Alzamora

Thomas C Grego

John Heinsohn

Jeffrey Kinsberg

Christopher Gandy

Andrew Orsini

Ronald Warzoha

Adrial Kirchen

A heat exchange component includes a part configured for exchanging thermal energy, the part is formed of at least one solid state Martensitic transformation phase change material which is configured to readily undergo a solid-solid martensitic transformation from one crystalline structure to another different crystalline structure during a change in temperature in the normal and/or anticipated operating temperatures of the heat exchange component. In some embodiments, the system further includes a temporally-evolving external temperature/heat source which changes the temperature and resultant phase of the solid-state phase change material. The temporally-evolving external temperature/heat source may involve a solid conducting material or electronic/photonic component, a fluid, a plasma, and/or a radiation source. The heat exchange component may be configured as a flat plate, tube, finned structure, porous structure, graded structure, cold plate, heat exchanger, condenser, evaporator, or any component generally regarded as a thermal energy storage or heat transfer structure in various embodiments.

Solid state martensitic transformation phase change material components for thermal energy storage and transient heat transfer systems

An in-weapon sensor enables electronic measurement of the firing pin indent force of a weapon system. The in-weapon sensor measures, either directly or indirectly, the indent force of the firing pin and communicates the information outside of the weapon to a data capture device. The data capture device provides a visual indication as to whether the firing pin indent force is sufficient or insufficient.

Firing pin indent gauge

A weapon includes a receiver having a bolt carrier assembly therein; a buttstock disposed behind the receiver, the buttstock having a tubular opening adjacent an end of the bolt carrier assembly; a larger diameter spring disposed in the tubular opening; a smaller diameter spring disposed in the larger diameter spring; a rod disposed in the rear end of the smaller diameter spring; a bumper attached to the rod; and a cap disposed in the front end of the spring, the cap having a head wherein a front side of the head engages the end of the bolt carrier assembly and a front end of the larger diameter spring bears against a rear side of the head.

Mechanical buffer for shouldered weapon

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Stroudsburg, PA, United States of America

Brian Donovan