{"id":{"repo_id":"utc","oai_identifier":"oai:scholar.utc.edu:theses-1937"},"canonical_url":"https://search.dev.ndltd.org/etd/utc/oai:scholar.utc.edu:theses-1937","repository":{"repo_id":"utc","name":"University of Tennessee - Chattanooga","base_url":"https://scholar.utc.edu/do/oai/"},"display":{"title":"To start or not to start: that is the question","abstract":"The BAM6QT is a hypersonic wind tunnel that was simulated with a 7-degree half-angle cone with diameters ranging from 4 to 7-inches, three different cone setups, and viscous and inviscid flow computations. These tests were then compared to determine what effects would cause the tunnel to unstart. Unstarting refers to flow not reaching Mach 6 at the apex of the cone or reflection shocks impinging on the surface of the cone causing undesired flow characteristics. There were three main conclusions that were made from this study, initially, it was found that when the BAM6QT was simulated with viscous flow and a 5.5-inch diameter cone with sting and or sting and support the tunnel would unstart. Secondary findings determined that viscous flow and sting and or sting and sting support are essential to the results. The tunnel unstarts due to shock and boundary layer interaction on the 5.5-inch diameter cone.","abstract_html":"The BAM6QT is a hypersonic wind tunnel that was simulated with a 7-degree half-angle cone with diameters ranging from 4 to 7-inches, three different cone setups, and viscous and inviscid flow computations. These tests were then compared to determine what effects would cause the tunnel to unstart. Unstarting refers to flow not reaching Mach 6 at the apex of the cone or reflection shocks impinging on the surface of the cone causing undesired flow characteristics. There were three main conclusions that were made from this study, initially, it was found that when the BAM6QT was simulated with viscous flow and a 5.5-inch diameter cone with sting and or sting and support the tunnel would unstart. Secondary findings determined that viscous flow and sting and or sting and sting support are essential to the results. The tunnel unstarts due to shock and boundary layer interaction on the 5.5-inch diameter cone.","abstract_has_math":false,"creators":["Snyder, Alexander"],"institution":"University of Tennessee at Chattanooga","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Sreenivas, Kidambi","Newman III, James; Margraves, Charles","College of Engineering and Computer Science"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"","date_published":null,"updated_at":"2026-07-24T05:47:06Z","subjects":["Aerodynamics, Hypersonic","Hypersonic wind tunnels"],"languages":["English","eng"],"rights":[],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"https://scholar.utc.edu/theses/759","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Sreenivas, Kidambi","Newman III, James; Margraves, Charles","College of Engineering and Computer Science"]},{"key":"dc:creator","label":"Author","values":["Snyder, Alexander"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-08-01T07:00:00Z"]},{"key":"dc:publisher","label":"Institution","values":["University of Tennessee at Chattanooga","Chattanooga (Tenn.)"]},{"key":"dc:relation","label":"Dc Relation","values":["Masters Theses and Doctoral Dissertations"]},{"key":"dc:type","label":"Dc Type","values":["Masters theses","Text"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Aerodynamics, Hypersonic","Hypersonic wind tunnels"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholar.utc.edu/theses/759"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Dept. of Mechanical Engineering","M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science."]},{"key":"dc:description.abstract","label":"Abstract","values":["The BAM6QT is a hypersonic wind tunnel that was simulated with a 7-degree half-angle cone with diameters ranging from 4 to 7-inches, three different cone setups, and viscous and inviscid flow computations. These tests were then compared to determine what effects would cause the tunnel to unstart. Unstarting refers to flow not reaching Mach 6 at the apex of the cone or reflection shocks impinging on the surface of the cone causing undesired flow characteristics. There were three main conclusions that were made from this study, initially, it was found that when the BAM6QT was simulated with viscous flow and a 5.5-inch diameter cone with sting and or sting and support the tunnel would unstart. Secondary findings determined that viscous flow and sting and or sting and sting support are essential to the results. The tunnel unstarts due to shock and boundary layer interaction on the 5.5-inch diameter cone."]},{"key":"dc:title","label":"Title","values":["To start or not to start: that is the question"]}]}],"canonical_facts":{"dc:contributor":["Sreenivas, Kidambi","Newman III, James; Margraves, Charles","College of Engineering and Computer Science"],"dc:creator":["Snyder, Alexander"],"dc:date":["2022-08-01T07:00:00Z"],"dc:description":["Dept. of Mechanical Engineering","M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science."],"dc:description.abstract":["The BAM6QT is a hypersonic wind tunnel that was simulated with a 7-degree half-angle cone with diameters ranging from 4 to 7-inches, three different cone setups, and viscous and inviscid flow computations. These tests were then compared to determine what effects would cause the tunnel to unstart. Unstarting refers to flow not reaching Mach 6 at the apex of the cone or reflection shocks impinging on the surface of the cone causing undesired flow characteristics. There were three main conclusions that were made from this study, initially, it was found that when the BAM6QT was simulated with viscous flow and a 5.5-inch diameter cone with sting and or sting and support the tunnel would unstart. Secondary findings determined that viscous flow and sting and or sting and sting support are essential to the results. The tunnel unstarts due to shock and boundary layer interaction on the 5.5-inch diameter cone."],"dc:identifier":["https://scholar.utc.edu/theses/759"],"dc:language":["English","eng"],"dc:publisher":["University of Tennessee at Chattanooga","Chattanooga (Tenn.)"],"dc:relation":["Masters Theses and Doctoral Dissertations"],"dc:rights":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["Aerodynamics, Hypersonic","Hypersonic wind tunnels"],"dc:title":["To start or not to start: that is the question"],"dc:type":["Masters theses","Text"]},"updated_at":"2026-07-24T05:47:06Z"}