DC Field | Value | Language |
---|---|---|
dc.contributor.author | Vara Siva Jyoti, Botchu | ko |
dc.contributor.author | Baek, Seung-Wook | ko |
dc.date.accessioned | 2014-11-12T07:17:09Z | - |
dc.date.available | 2014-11-12T07:17:09Z | - |
dc.date.created | 2014-11-11 | - |
dc.date.created | 2014-11-11 | - |
dc.date.created | 2014-11-11 | - |
dc.date.issued | 2015-04 | - |
dc.identifier.citation | JOURNAL OF ENERGETIC MATERIALS, v.33, no.2, pp.125 - 139 | - |
dc.identifier.issn | 0737-0652 | - |
dc.identifier.uri | http://hdl.handle.net/10203/191072 | - |
dc.description.abstract | The current trend in the area of highly energetic storable liquid rocket propellant research is to develop environmentally friendly gelled/metallized systems and to explore the feasibility of their application in rocket engines. The idea stems from the fact that the conversion of a conventional liquid propellant to a gelled state and its subsequent metallization has the potential to significantly enhance the performance and density-specific impulse. The gelation of liquid fuels could be induced at a critical gellant concentration of as low as 8wt% for the pure ethanol case and as low as 4 and 6wt% for metallized ethanol depending on the metal type. Furthermore, the gel formed should be thixotropic. Metallized gels using 20wt% Al and B metal powders could also be formulated. These metallized (Al and B) ethanol gel systems showed a reduction in the critical gellant concentration depending on the degree of metallization. The rheological properties of metallized and nonmetallized ethanol gels using methyl cellulose (MC) as a gelling agent at different ambient temperatures (283.15, 293.15, 303.15, 313.15, and 323.15K) were experimentally investigated in this study. The gel fuels were rheologically characterized using a rheometer at shear rates ranging from 1 to 12s(-1) and 1 to 1,000s(-1). Metallized and nonmetallized ethanol gels were found to be thixotropic in nature. The apparent viscosity and yield stress (for shear rate range 1 to 12s(-1)) of gels were observed to significantly decrease at higher ambient temperatures and as the gellant and metal particle concentrations decreased. The thixotropic behavior was found to be a strong function of the Al and B metal particle concentration for all test temperatures at shear rate ranges from 1 to 12s(-1) and 1 to 1,000s(-1). It was also a function of the MC concentration at a shear rate range of 1 to 1,000s(-1). | - |
dc.language | English | - |
dc.publisher | TAYLOR & FRANCIS INC | - |
dc.title | Formulation and Comparative Study of Rheological Properties of Loaded and Unloaded Ethanol-Based Gel Propellants | - |
dc.type | Article | - |
dc.identifier.wosid | 000342844700005 | - |
dc.identifier.scopusid | 2-s2.0-84911968458 | - |
dc.type.rims | ART | - |
dc.citation.volume | 33 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 125 | - |
dc.citation.endingpage | 139 | - |
dc.citation.publicationname | JOURNAL OF ENERGETIC MATERIALS | - |
dc.identifier.doi | 10.1080/07370652.2014.939311 | - |
dc.contributor.localauthor | Baek, Seung-Wook | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | propellant | - |
dc.subject.keywordAuthor | thixotropic | - |
dc.subject.keywordAuthor | gel | - |
dc.subject.keywordAuthor | shear thinning | - |
dc.subject.keywordAuthor | rheology | - |
dc.subject.keywordAuthor | propellant | - |
dc.subject.keywordAuthor | thixotropic | - |
dc.subject.keywordAuthor | gel | - |
dc.subject.keywordAuthor | shear thinning | - |
dc.subject.keywordAuthor | rheology | - |
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