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DOE OSTI · 2575923

Shear and combustion characterization of printable ammonium perchlorate composite propellant formulations

Purcell, Dylan C. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)] (ORCID:0000000205548185)·Hargather, Michael J. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)] (ORCID:0000000158616770)·Hargather, Chelsey Z. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)] (ORCID:0000000214469112)
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Abstract

Seven formulations of ammonium perchlorate composite propellant (APCP) are developed and their properties relevant for successful additive manufacture are characterized. Extrusion in a custom-built 3D printing system and spindle viscometry are used to collect viscosity measurements of curing primary and non-curing secondary versions of the formulations. The formulations that behave similarly to a Bingham plastic, with apparent viscosities between 4 and 8 thousand Pa*s at 30 minutes post-mix, are determined to be most suitable for printing applications. Measurements of one material show a yield stress of 1 kPa. Ambient pressure burn rates of 2.0–2.9 mm/s were measured for the compositions tested. All measured burn rates were comparable to the lower end of typical burn rates for APCP. In conclusion, the results of the characterization demonstrate a propellant suitable for use in a 3D printing system.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRYChemistryEngineeringadditive manufactureammonium perchloratepropellantshear propertiesviscosity

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Purcell, Dylan C. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)] (ORCID:0000000205548185), Hargather, Michael J. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)] (ORCID:0000000158616770), Hargather, Chelsey Z. [New Mexico Institute of Mining and Technology, Socorro, NM (United States)] (ORCID:0000000214469112). 2023-11-27. Shear and combustion characterization of printable ammonium perchlorate composite propellant formulations. https://doi.org/10.1002/prep.202300154

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY subjectChemistry subjectEngineering subjectPropellant subjectadditive manufacture subjectammonium perchlorate subject

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