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International Journal of Energetic Materials and Chemical Propulsion

Erscheint 6 Ausgaben pro Jahr

ISSN Druckformat: 2150-766X

ISSN Online: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

TEMPERATURE SENSITIVITY OF GRANULAR PROPELLANTS USING A CONDITIONED CLOSED BOMB

Volumen 13, Ausgabe 1, 2014, pp. 37-50
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014005311
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ABSTRAKT

In this study, a temperature-conditioned closed-bomb facility was employed to determine the temperature sensitivity of granular M48 double-base propellant, as part of a larger study on the effect of initial temperature on the interior ballistics and overall performance of the U.S. Army's 120-mm mortar system. In order to determine the temperature sensitivity of the propellant over a broad range of applicable conditions, at least three test firings were performed at each of four different initial temperatures: −47, −12, 21, and 63° C. The pressure histories recorded from each of these firings were used to deduce the linear burning rate ofM48 propellant as a function of pressure. In addition to the pressure measurements, non-intrusive acoustic emission technology was utilized in the closed-bomb tests to study the effect of initial temperature on the ignition delay of this propellant. Temperature sensitivity was found to be a constant equal to 0.37%/°C with pressure and for initial temperature between −12 and 63°C. However, the deduced burning rate at −47°C is greater than that at −12°C, leading to a temperature sensitivity of −0.07%/°C for initial temperatures below −12°C. Propellant grain fracture seems an unlikely explanation for this observation because the burning rate and vivacity behavior at −47°C mirrors that at the higher temperatures. The acoustic emission records have demonstrated an Arrhenius-type relationship between ignition delay time and initial temperature, which suggests that the propellant decomposition mechanism is not changing with temperature.

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