{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/84010"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/84010","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Measurement and Modeling of Pressure -Driven Transient Burning of Solid Propellants","abstract":"\"In the modeling section of this study, two transient heterogeneous propellant combustion models, applicable to fine oxidizer composite propellants, are examined. The \"\"surface accumulation model\"\" supposes that components accumulate in a layer at the surface. Each component reaches an equilibrium concentration inversely proportional to its burning rate. The \"\"double reaction layer model\"\" supposes that a molten binder layer covers the propellant. The oxidizer gasifies underneath the layer, while the binder gasifies at the surface. The double reaction layer model qualitatively produces features observed in experimental laser-recoil response function data: a sharp resonance peak accompanied by a shift from negative to positive phase. The surface accumulation model does not produce these features. The presence of time delay terms---the time lag is caused by heat conduction through the binder layer---in the double reaction layer model accounts for the sharp resonance peak. The frequency of the peak produced by the model is lower than what is observed in the data; this discrepancy is attributed to uncertainties in the properties of the binder layer.\"","abstract_html":""In the modeling section of this study, two transient heterogeneous propellant combustion models, applicable to fine oxidizer composite propellants, are examined. The ""surface accumulation model"" supposes that components accumulate in a layer at the surface. Each component reaches an equilibrium concentration inversely proportional to its burning rate. The ""double reaction layer model"" supposes that a molten binder layer covers the propellant. The oxidizer gasifies underneath the layer, while the binder gasifies at the surface. The double reaction layer model qualitatively produces features observed in experimental laser-recoil response function data: a sharp resonance peak accompanied by a shift from negative to positive phase. The surface accumulation model does not produce these features. The presence of time delay terms---the time lag is caused by heat conduction through the binder layer---in the double reaction layer model accounts for the sharp resonance peak. The frequency of the peak produced by the model is lower than what is observed in the data; this discrepancy is attributed to uncertainties in the properties of the binder layer."","abstract_has_math":false,"creators":["Murphy, Jeffrey John"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Krier, Herman"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T21:13:07Z","date_published":"2015-09-25T21:13:07Z","updated_at":"2026-07-22T22:26:22Z","subjects":["Engineering, Aerospace"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9990098"],"render_values":[{"text":"(MiAaPQ)AAI9990098","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/84010","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Krier, Herman"]},{"key":"dc:creator","label":"Author","values":["Murphy, Jeffrey John"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T21:13:07Z","10000-01-01","2000"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Aerospace"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/84010","(MiAaPQ)AAI9990098"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"In the modeling section of this study, two transient heterogeneous propellant combustion models, applicable to fine oxidizer composite propellants, are examined. The \"\"surface accumulation model\"\" supposes that components accumulate in a layer at the surface. Each component reaches an equilibrium concentration inversely proportional to its burning rate. The \"\"double reaction layer model\"\" supposes that a molten binder layer covers the propellant. The oxidizer gasifies underneath the layer, while the binder gasifies at the surface. The double reaction layer model qualitatively produces features observed in experimental laser-recoil response function data: a sharp resonance peak accompanied by a shift from negative to positive phase. The surface accumulation model does not produce these features. The presence of time delay terms---the time lag is caused by heat conduction through the binder layer---in the double reaction layer model accounts for the sharp resonance peak. The frequency of the peak produced by the model is lower than what is observed in the data; this discrepancy is attributed to uncertainties in the properties of the binder layer.\"","Made available in DSpace on 2015-09-25T21:13:07Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9990098.pdf: 5824057 bytes, checksum: 2c9d8452effd333627ed88bf9045f0d7 (MD5) Previous issue date: 2000","Embargo set by: Seth Robbins for item 85291 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","137 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000."]},{"key":"dc:title","label":"Title","values":["Measurement and Modeling of Pressure -Driven Transient Burning of Solid Propellants"]}]}],"canonical_facts":{"dc:contributor":["Krier, Herman"],"dc:creator":["Murphy, Jeffrey John"],"dc:date":["2015-09-25T21:13:07Z","10000-01-01","2000"],"dc:description":["\"In the modeling section of this study, two transient heterogeneous propellant combustion models, applicable to fine oxidizer composite propellants, are examined. The \"\"surface accumulation model\"\" supposes that components accumulate in a layer at the surface. Each component reaches an equilibrium concentration inversely proportional to its burning rate. The \"\"double reaction layer model\"\" supposes that a molten binder layer covers the propellant. The oxidizer gasifies underneath the layer, while the binder gasifies at the surface. The double reaction layer model qualitatively produces features observed in experimental laser-recoil response function data: a sharp resonance peak accompanied by a shift from negative to positive phase. The surface accumulation model does not produce these features. The presence of time delay terms---the time lag is caused by heat conduction through the binder layer---in the double reaction layer model accounts for the sharp resonance peak. The frequency of the peak produced by the model is lower than what is observed in the data; this discrepancy is attributed to uncertainties in the properties of the binder layer.\"","Made available in DSpace on 2015-09-25T21:13:07Z (GMT). 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