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International Journal of Energetic Materials and Chemical Propulsion

Publication de 6  numéros par an

ISSN Imprimer: 2150-766X

ISSN En ligne: 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

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COMBUSTION PROCESSES OF TWO DIFFERENT PYROTECHNIC PELLETS USED IN M1020 IGNITION CARTRIDGES FOR 120-mm MORTAR SYSTEM

Volume 8, Numéro 3, 2009, pp. 221-235
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v8.i3.40
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RÉSUMÉ

Understanding the ignition/combustion processes of pyrotechnic pellets and the product-gas pressurization and venting behavior inside the flash tube of an ignition cartridge is very useful for supporting model formulation and design improvements for mortar propulsion systems. This study provides the pressure-time data for flash tubes using both black powder (BP) and moisture resistant black powder substitute (MRBPS) pellets for characterizing the mass and energy fluxes discharged from the vent holes into the granular propellant bed in the M1020 ignition cartridge. Combustion processes in instrumented ignition cartridges using these two types of pellets in the flash tube were studied. Results for both pyrotechnic pellets showed highly non-uniform venting of products from the flash tube vent holes. This can lead to significant pressure wave phenomena in the combustion of ball propellants in the granular bed. The highly transient pressurization process produced by combustion of granular propellants caused non-uniform discharge of products in both gas phase and condensed phase to the mortar tube. MRBPS pellets produced much higher and smoother P-t traces due to its generation of higher percentage of gas-phase combustion products. They also exhibited greater reproducibility than black powder pellets and had a faster average time from ignition to depressurization of the granular bed. However, since both pellets produced a highly non-uniform discharge of product gases and particles from the flash tube into the granular bed, modification of the vent-hole pattern is recommended.

RÉFÉRENCES
  1. Conkling, J.A., Chemistry of Pyrotechnics.

  2. Cooper, P.W. and Kurowski, S.R., Introduction to the Technology of Explosives.

  3. Brede, U., Hagel, R., Redecker, K. H., and Weuter, W., Primer Compositions in the Course of Time, From Black Powder and SINOXID to SINTOX Compositions and SINCO Booster.

  4. Enoksson, B., Alfred Nobel: From Gunpowder to Ballistit.

  5. Varney, M.A., Primers and Igniters in Gun Propulsion Technology.

  6. Kuo, K.K., Moore, J.D., Risha, G.A., Boyer, E., Ferrara, P.J., Rand, R., and Travaille, J., Characterization of the M1020 Ignition Cartridge Under Simulated Mortar Firing Conditions.

CITÉ PAR
  1. Lu Xinggan, Jiang Kun, Wang Hao, Numerical simulation research on coupling of gas generator with large aspect ratio and multi-vent, AIP Advances, 11, 7, 2021. Crossref

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