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      Effect of Parameter Variation on the Viscosity of Ethanol Gel Propellants

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          Abstract

          ABSTRACT This research investigated how the variation of temperature and shear rate affects the viscosity of ethanol gel propellants that use methyl cellulose as gellant and, in parts, use boron as energetic additive. Using a rotational viscometer in a cone-and-plate configuration, propellant viscosity data was recorded across a range of temperatures and applied shear rates. The temperaturedependence of the viscosity was modelled using an Arrhenius-type equation. For the high shear rates, the data was modelled using the Power Law, Herrschel–Bulkley model, Carreau model, and Cross model. For low shear rates the used model was the rearranged Herrschel–Bulkley model. The temperature investigation suggested that the trend of decreasing viscosity with increasing temperature, predicted by the Arrhenius-type equation, is only applicable until approximately 320 K, after which the gel viscosity increased strongly. At high shear rates, the gel behaved in a shear thinning manner and was modelled most accurately by the Cross model. At low shear rates, the gel was shear thickening up to its elastic limit, which was found to lie at 0.41 s–1.

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          Most cited references 32

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          Methylcellulose, a Cellulose Derivative with Original Physical Properties and Extended Applications

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            Thermoreversible Gelation of Aqueous Methylcellulose Solutions

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              Formulation and Comparative Study of Rheological Properties of Loaded and Unloaded Ethanol-Based Gel Propellants

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                Author and article information

                Journal
                jatm
                Journal of Aerospace Technology and Management
                J. Aerosp. Technol. Manag.
                Departamento de Ciência e Tecnologia Aeroespacial (São José dos Campos, SP, Brazil )
                2175-9146
                2021
                : 13
                Affiliations
                Delft orgnameDelft University of Technology orgdiv1Faculty of Aerospace Engineering orgdiv2Department of Space Engineering Netherlands
                Article
                S2175-91462021000100308 S2175-9146(21)01300000308
                10.1590/jatm.v13.1196

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 37, Pages: 0
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