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International Journal of Energetic Materials and Chemical Propulsion

年間 6 号発行

ISSN 印刷: 2150-766X

ISSN オンライン: 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

DETERMINATION OF TOTAL SURFACE HEAT FLUX TO ABLATIVE INTERNAL INSULATORS IN SOLID ROCKET MOTORS VIA INVERSE HEAT CONDUCTION ANALYSIS

巻 13, 発行 2, 2014, pp. 169-191
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014008148
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要約

In assessing the performance of ablative internal insulators in solid rocket motors (SRMs), it is useful to measure the total surface heat flux incident on the insulators. The simplicity of this proposition, however, belies the challenges involved in performing such a measurement. Any device installed in an SRM is subjected to both high temperatures and heating rates; therefore, one challenge is the selection of a gauge material that can not only survive this environment intact, but also deliver accurate and reliable measurements while exposed to these harsh conditions. A second, and more problematic, difficulty is that of introducing the gauge into the SRM environment in a manner that is minimally invasive and will yield results that are an accurate representation of that environment. In this study, a total heat flux gauge using graphite as the sensor material was designed, fabricated, and tested. Multiple micro-thermocouples were embedded at different depths in the graphite sensor, and their recorded temperature histories were utilized in an inverse heat conduction analysis to deduce the total heat flux to and instantaneous temperature of the sensor surface. The gauge was employed in six subscale SRM firings performed for a study of ablative internal insulation. This heat-flux measurement technique proved to be both robust, producing useful results for 9 of 11 total installations, and accurate, with total uncertainty as calculated from quantifiable elemental uncertainties being no greater than 7% of the deduced flux.

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