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International Journal of Energetic Materials and Chemical Propulsion

Publicou 6 edições por ano

ISSN Imprimir: 2150-766X

ISSN On-line: 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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EFFECT OF AZODICARBONAMIDE PARTICLES ON THE REGRESSION RATE OF HYDROXYL-TERMINATED POLYBUTADIENE (HTPB)-BASED FUELS FOR HYBRID ROCKET PROPULSION

Volume 16, Edição 2, 2017, pp. 103-114
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2018022374
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RESUMO

The details of the burning surface layer can have a great influence on the combustion performance of solid fuels for hybrid propulsion. In composite solid fuels, a substance with a low decomposition temperature or a fast burning rate leaves holes in the initial matrix after decomposition or burning, thus increasing the regressing surface area. Azodicarbonamide (ADCA)/hydroxyl-terminated polybutadiene (HTPB) composite fuels can achieve this kind of mechanism: ADCA decomposes at the temperature of 150–306°C while HTPB decomposes at 417–591°C, thus forming a certain thickness of porous layer after the decomposition of ADCA particles when the fuel burns. However, the gaseous products increase the blocking effect, hindering heat transfer from the flame zone to the fuel surface and suppressing combustion. In this study, we investigate the effects of ADCA on the combustion characteristics of HTPB-based composite solid fuels. The first exothermic peak of thermal gravimetry and differential scanning calorimetry (TG-DSC) tests for ADCA/HTPB fuels decreases, while the second exothermic peak increases in intensity and simultaneously shifts to lower temperatures with increasing ADCA contents. The optimal addition to the HTPB matrix of 3% in mass of ADCA particles enhanced the pre-expansion during combustion and showed an increased regression rate by 41.52%, while 1% and 5% in mass of ADCA increased by 2.99% and –0.40%, respectively, at GOX = 340 kg/m2s, but revealed a decrease to –15.61%, –11.81%, and –25.74%, correspondingly at GOX = 150 kg/m2s. This suggests that appropriate ADCA acts as an effective burning rate modifier by favoring the formation of a certain thickness of porous layer.

CITADO POR
  1. Chen Suhang, Tang Yue, Yu Hongsheng, Guan Xinyan, DeLuca Luigi T., Zhang Wei, Shen Ruiqi, Ye Yinghua, Combustion enhancement of hydroxyl-terminated polybutadiene by doping multiwall carbon nanotubes, Carbon, 144, 2019. Crossref

  2. Chen Suhang, Tang Yue, Zhang Wei, Shen Ruiqi, Yu Hongsheng, Ye Yinghua, DeLuca Luigi T., Innovative Methods to Enhance the Combustion Properties of Solid Fuels for Hybrid Rocket Propulsion, Aerospace, 6, 4, 2019. Crossref

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