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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014011516
pages 13-27

EXPERIMENTAL OBSERVATION FOR THE DEVELOPMENT OF REACTION KINETICS IN COMPOSITE PROPELLANT SLOW COOK-OFF

Trevor D. Hedman
Naval Air Warfare Center, Weapons Division, China Lake, California 9355-6100 USA
Matthew L. Gross
Naval Air Warfare Center, Weapons Division, China Lake, California 9355-6100 USA
Kevin P. Ford
Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6100
Ephraim B. Washburn
Naval Air Warfare Center, Weapons Division, China Lake, California 93555, USA
M. T. Gennrich
Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6100
Jessica A. Webb
Naval Air Warfare Center, Weapons Division, China Lake, California 93555, USA
Alice I. Atwood
Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6100 USA

RÉSUMÉ

The reactions occurring during the slow heating of an ammonium perchlorate (AP)−based composite propellant are investigated. Reaction kinetics are determined using differential scanning calorimetry (DSC) and thermogravimetric (TGA) experiments. In addition, small cook-off tests are completed to assess both the reaction temperature and exothermic behavior of the material when subject to a ramped heating rate of 3.3°C/h. Based on experimental observation, two heuristic reaction schemes are derived. These mechanisms are implemented into a 3-D, fully transient, hydrocode and parameterized by direct comparison with the subscale cook-off test results. This model simulates the heat transfer into a propellant grain as well as the heat generated by the reaction, and is used to assess the experimentally determined global reactions. A comparison of the reaction kinetics, the techniques used to obtain them, and their applicability to slow cook-off of a composite propellant is presented.


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