Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Aerospace Technology and Management (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462012000200197 |
Resumo: | Abstract: Rockets are powered by composite solid propellant, which is a heterogeneous system consisting of solid oxidizer and metallic fuel dispersed in a polymeric fuel binder matrix. The slurry casting technique under vacuum/gravity condition is well-established for performing a different class of large sized case bonded rocket motors. During propellant casting, the flow rate of slurry is a very critical parameter as it affects the product quality. The casting rate is governed by sufficient degassing and viscosity buildup due to the progress of cure reaction. In the present study, casting rate and casting time have been numerically evaluated for fixed and varying percentages of valve opening, different viscosity of slurry, and different pressure drop (driving force). The velocity profile of propellant slurry inside feeding pipe and valve has also been evaluated. Furthermore, to get a flawless grain and to predict the slurry casting rate, a microscopic analysis has been carried out to model the flow behaviour of composite propellant slurry, where the momentum conservation law has been applied to express the mathematical model in an analytical form. The resulting differential and algebraic equations have been solved numerically using MATLAB, computing software. The numerical analysis is useful for designing new casting set-up and for giving the idea of maximum casting rate, which is achievable for given casting set-up and rheological properties of propellant slurry. |
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Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum CastingMicroscopic analvsisComposite propellantVacuum castingCasting rateCasting timeAbstract: Rockets are powered by composite solid propellant, which is a heterogeneous system consisting of solid oxidizer and metallic fuel dispersed in a polymeric fuel binder matrix. The slurry casting technique under vacuum/gravity condition is well-established for performing a different class of large sized case bonded rocket motors. During propellant casting, the flow rate of slurry is a very critical parameter as it affects the product quality. The casting rate is governed by sufficient degassing and viscosity buildup due to the progress of cure reaction. In the present study, casting rate and casting time have been numerically evaluated for fixed and varying percentages of valve opening, different viscosity of slurry, and different pressure drop (driving force). The velocity profile of propellant slurry inside feeding pipe and valve has also been evaluated. Furthermore, to get a flawless grain and to predict the slurry casting rate, a microscopic analysis has been carried out to model the flow behaviour of composite propellant slurry, where the momentum conservation law has been applied to express the mathematical model in an analytical form. The resulting differential and algebraic equations have been solved numerically using MATLAB, computing software. The numerical analysis is useful for designing new casting set-up and for giving the idea of maximum casting rate, which is achievable for given casting set-up and rheological properties of propellant slurry.Departamento de Ciência e Tecnologia Aeroespacial2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462012000200197Journal of Aerospace Technology and Management v.4 n.2 2012reponame:Journal of Aerospace Technology and Management (Online)instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA)instacron:DCTA10.5028/jatm.2012.04021212info:eu-repo/semantics/openAccessThiyyarkandy,BejoyJain,MukeshDombe,Ganesh ShankarMehilal,MehilalSingh,Praveen PrakashBhattacharya,Bikasheng2017-05-29T00:00:00Zoai:scielo:S2175-91462012000200197Revistahttp://www.jatm.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||secretary@jatm.com.br2175-91461984-9648opendoar:2017-05-29T00:00Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA)false |
dc.title.none.fl_str_mv |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
title |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
spellingShingle |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting Thiyyarkandy,Bejoy Microscopic analvsis Composite propellant Vacuum casting Casting rate Casting time |
title_short |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
title_full |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
title_fullStr |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
title_full_unstemmed |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
title_sort |
Numerical Studies on Flow Behavior of Composite Propellant Slurry During Vacuum Casting |
author |
Thiyyarkandy,Bejoy |
author_facet |
Thiyyarkandy,Bejoy Jain,Mukesh Dombe,Ganesh Shankar Mehilal,Mehilal Singh,Praveen Prakash Bhattacharya,Bikash |
author_role |
author |
author2 |
Jain,Mukesh Dombe,Ganesh Shankar Mehilal,Mehilal Singh,Praveen Prakash Bhattacharya,Bikash |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Thiyyarkandy,Bejoy Jain,Mukesh Dombe,Ganesh Shankar Mehilal,Mehilal Singh,Praveen Prakash Bhattacharya,Bikash |
dc.subject.por.fl_str_mv |
Microscopic analvsis Composite propellant Vacuum casting Casting rate Casting time |
topic |
Microscopic analvsis Composite propellant Vacuum casting Casting rate Casting time |
description |
Abstract: Rockets are powered by composite solid propellant, which is a heterogeneous system consisting of solid oxidizer and metallic fuel dispersed in a polymeric fuel binder matrix. The slurry casting technique under vacuum/gravity condition is well-established for performing a different class of large sized case bonded rocket motors. During propellant casting, the flow rate of slurry is a very critical parameter as it affects the product quality. The casting rate is governed by sufficient degassing and viscosity buildup due to the progress of cure reaction. In the present study, casting rate and casting time have been numerically evaluated for fixed and varying percentages of valve opening, different viscosity of slurry, and different pressure drop (driving force). The velocity profile of propellant slurry inside feeding pipe and valve has also been evaluated. Furthermore, to get a flawless grain and to predict the slurry casting rate, a microscopic analysis has been carried out to model the flow behaviour of composite propellant slurry, where the momentum conservation law has been applied to express the mathematical model in an analytical form. The resulting differential and algebraic equations have been solved numerically using MATLAB, computing software. The numerical analysis is useful for designing new casting set-up and for giving the idea of maximum casting rate, which is achievable for given casting set-up and rheological properties of propellant slurry. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462012000200197 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462012000200197 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5028/jatm.2012.04021212 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Departamento de Ciência e Tecnologia Aeroespacial |
publisher.none.fl_str_mv |
Departamento de Ciência e Tecnologia Aeroespacial |
dc.source.none.fl_str_mv |
Journal of Aerospace Technology and Management v.4 n.2 2012 reponame:Journal of Aerospace Technology and Management (Online) instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA) instacron:DCTA |
instname_str |
Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
instacron_str |
DCTA |
institution |
DCTA |
reponame_str |
Journal of Aerospace Technology and Management (Online) |
collection |
Journal of Aerospace Technology and Management (Online) |
repository.name.fl_str_mv |
Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
repository.mail.fl_str_mv |
||secretary@jatm.com.br |
_version_ |
1754732530744950784 |