Published 6 issues per year
ISSN Print: 2150-766X
ISSN Online: 2150-7678
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EXPERIMENTAL OBSERVATION FOR THE DEVELOPMENT OF REACTION KINETICS IN COMPOSITE PROPELLANT SLOW COOK-OFF
ABSTRACT
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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Zeman Svatopluk, Jungová Marcela, Sensitivity and Performance of Energetic Materials, Propellants, Explosives, Pyrotechnics, 41, 3, 2016. Crossref
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Wu Wei, Zhang Ximing, Jin Peng, Zhao Shuai, Luo Yunjun, Mechanism of PSAN effect on slow cook-off response of HTPE propellant, Journal of Energetic Materials, 2022. Crossref