{"681597":{"#nid":"681597","#data":{"type":"event","title":"PhD Defense by Ezgi Balkas","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EEzgi Balkas\u003C\/strong\u003E\u003Cbr\u003E\u003Cem\u003E(Advisor: Prof. Dimitri Mavris]\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003Ewill defend a doctoral thesis entitled,\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECertification by Analysis in the Context of Non-Conventional Thermal Management Systems\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EOn\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETuesday, April 15 at 10:00 a.m.\u0026nbsp;\u003C\/strong\u003E\u003Cbr\u003E\u003Cstrong\u003ECollaborative Visualization Environment (CoVE)\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EWeber Space and Technology Building (SST II)\u003C\/strong\u003E\u003Cbr\u003E\u003Ca href=\u0022https:\/\/teams.microsoft.com\/l\/meetup-join\/19%3ameeting_YzRlOTdkZjUtMTFiNy00NTc1LTg5NjYtOGMzMDg0MDQzMzU2%40thread.v2\/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%221467d4b8-501c-45b9-a9e8-1184d649691a%22%7d\u0022\u003E\u003Cem\u003EJoin the meeting now\u003C\/em\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EThe aviation industry is accelerating efforts to adopt hybrid- and more-electric propulsion systems to reduce emissions and noise. However, these novel architectures introduce new safety challenges, particularly in \u003Cstrong\u003EThermal Management Systems (TMS)\u003C\/strong\u003E. This study proposes a \u003Cstrong\u003ECertification-by-Analysis (CbA)\u003C\/strong\u003E framework to streamline and validate TMS design through integrated modeling and simulation, including \u003Cstrong\u003ENPSS engine cycle analyses\u003C\/strong\u003E, \u003Cstrong\u003Ecustom geometry tools\u003C\/strong\u003E (WATE++-like), and \u003Cstrong\u003ECFD in OpenFOAM\u003C\/strong\u003E. A novel \u003Cstrong\u003E3D Lumped-Capacitance Thermal Model\u003C\/strong\u003E captures transient thermal behavior in fan, core, and fuselage compartments\u2014enabling a thorough assessment of temperature-sensitive components (motors, power electronics, batteries) throughout the mission, including extreme hot- and cold-day conditions. By combining \u003Cstrong\u003E14 CFR Part 25 subpart E\u003C\/strong\u003E rules with advanced failure-mode and redundancy analyses, the framework confirms these new propulsion concepts can meet safety and certification requirements. The methodology is also extended to \u003Cstrong\u003Eopen-rotor\u003C\/strong\u003E configurations, highlighting the unique cooling challenges when the bypass duct is removed. Finally, this work quantifies system-level impacts (weight, fuel burn, and reliability) to inform design trade-offs that balance performance gains with rigorous safety and redundancy needs\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EProf. Dimitri Mavris \u2013 School of Aerospace Engineering (Advisor)\u003C\/p\u003E\u003Cp\u003EProf. Daniel Schrage \u2013 School of Aerospace Engineering\u003C\/p\u003E\u003Cp\u003EProf. Brian German \u2013 School of Aerospace Engineering\u003C\/p\u003E\u003Cp\u003EDr. Eric Hendricks \u2013 Propulsion System Branch, NASA Glen\u003C\/p\u003E\u003Cp\u003EDr. Angela Campbell \u2013 System Safety Section, FAA\u003C\/p\u003E\u003Cp\u003EDr. Jonathan Gladin \u2013 School of Aerospace Engineering\u003C\/p\u003E\u003Cp\u003EDr. Evan Harrison \u2013 School of Aerospace Engineering\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003ECertification by Analysis in the Context of Non-Conventional Thermal Management Systems\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Certification by Analysis in the Context of Non-Conventional Thermal Management Systems"}],"uid":"27707","created_gmt":"2025-04-04 13:45:58","changed_gmt":"2025-04-15 17:51:22","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2025-04-21T13:00:00-04:00","event_time_end":"2025-04-21T15:00:00-04:00","event_time_end_last":"2025-04-21T15:00:00-04:00","gmt_time_start":"2025-04-21 17:00:00","gmt_time_end":"2025-04-21 19:00:00","gmt_time_end_last":"2025-04-21 19:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Collaborative Visualization Environment (CoVE)  Weber Space and Technology Building (SST II)","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}