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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

SIZE EFFECT OF ALUMINUM NANO-PARTICLES ON HTPB/AP PROPELLANT COMBUSTION

Volumen 6, Ausgabe 5, 2007, pp. 529-550
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v6.i5.10
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ABSTRAKT

For a few years, nano-aluminum was supposed to bring about better combustion and ballistic properties to propellants. The actual published results seem a little disappointing. For the purpose of evaluating the properties of such particles, experiments were conducted to complete existing information from literature review.
A specific nano-aluminum powder has been selected because of its well-adapted chemical properties. A HTPB/AP/Al propellant has been processed by traditional techniques and tests were performed to ensure the good dispersion of the nano-Al.
By means of quenching and particle collection, it is observed that agglomeration phenomena takes place at the propellant combustion surface, limiting the initially expected effect of nano-aluminum. Interpretation of the particles' size and X-ray identification analyses are compared to the agglomeration prediction model (typically called 'pocket model') to verify whether this approach can be used in the nanometric domain or not. ONERA application of the Cohen-Beckstead's pocket model leads to a better agreement between experimental and predicted agglomeration globules. It appears that a few remaining overestimated cases, not foreseen by the model, can be attributed to rapid combustion of the finest Al particles.
Visualization experiments show the evolution of the combustion zone of the composite propellant versus the aluminum particles' sizes. As expected, the first visualization results outline the aluminum combustion zone coming closer to the propellant combustion surface. This distance is correlated with the aluminum particle diameter. The Al combustion model proposed by Widener-Beckstead provided a good validation on a wide micrometric size range and in various experimental conditions. New combustion time measurements, extracted from ONERA visualization tests of very fine, yet visible, particles, allow validation of the model down to the particle size limit of 3−5 μm.

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