US Government As Represented by the Secretary of the Army

Purdue Research Foundation

South Dakota Board of Regents

Lori J Groven

Steven Forrest Son

Jay C Poret

Anthony P Shaw

Travis R Sippel

Jason Brusnahan

Joshua Koenig

Alexander Mukasyan

Deepak Kapoor

Rajesh Shende

Jan Puszynski

Christopher D Haines

Zac Doorenbos

Eric J Miklaszewski

Robert V Reeves

The present invention is a pyrotechnic time delay system that is improved over prior-art designs. Specifically, the system described herein comprises at least one delay element. The delay element or delay elements each have an input charge, a delay composition, and an output charge. Both the input charge and the output charge are igniter compositions and are comprised of the same components despite having different functional goals. The input charge and output charge compositions preferably contain titanium, manganese dioxide, and polytetrafluoroethylene. The delay composition may be modified from current formulations to include manganese and manganese dioxide, or tungsten and manganese dioxide. The system disclosed herein may be comprised of one delay element, or it may be modular wherein multiple delay elements are connected in series.

Pyrotechnic delay element device

The present invention is a pyrotechnic time delay system that is improved over prior-art designs. Specifically, the system described herein comprises at least one delay element. The delay element or delay dements each have an input charge, a delay composition, and an output charge. Both the input charge and the output charge are igniter compositions and are comprised of the same components despite having different functional goals. The input charge and output charge compositions preferably contain titanium, manganese dioxide, and polytetrafluoroethylene. The delay composition may be modified from current formulations to include manganese and manganese dioxide, or tungsten and manganese dioxide. The system disclosed herein may be comprised of one delay element, or it may be modular wherein multiple delay elements are connected in series.

The invention provides mechanically activated metal fuels for energetic material applications. An exemplary embodiment involves mechanically treating micrometer-sized particles of at least one metal with particles of at least one fluorocarbon to form composite particles containing the at least one metal and the at least one fluorocarbon.

Mechanically activated metal fuels for energetic material applications

An environmentally safe, nontoxic energetic time delay composition useful in small diameter aluminum tubes (i.e., typical military delay housings), which provides desired delay propagation rates of from less than about 2 to about 38 mm/s through such delay housings&#x2014;the compositions being compressed stoichiometric mixes of Ti and C powders; Ni and Al powders; a combination of Ti/C and 3Ni/Al powders; and a combination of Ti/C and Ni/Al powders, diluted with inert alumina.

Condensed phase energetic time delay compositions

A fuze includes a housing having a first end and an opposing second end and defining an elongate channel extending between the first and second ends; and a mechanically activated reactive material comprising at least first and second elements disposed within the channel.

Gasless ignition system and method for making same

An improved method for the production of pyrophoric materials which does not employ hot NaOH and produces pyrophoric materials on various types of ceramic, metal, nanomaterial substrates. The method impregnates the substrate materials with pyrophoric iron or other materials resulting in materials that are 'tunable' with respect to its pyrophoric output as determined by its temperature, rise time sustenance etc through selective variation of particle size, morphology, and diluents or reactive materials.

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Rapid City, SD, United States of America

Lori J Groven