{"675307":{"#nid":"675307","#data":{"type":"event","title":"PhD Proposal by Madilyn Drosendahl","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EMadilyn Drosendahl\u003C\/strong\u003E\u003Cbr\u003E\u003Cem\u003E(Advisor: Professor Dimitri Mavris]\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003Ewill propose a doctoral thesis entitled,\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EA Methodology for the Optimization of Hybrid SEP-Chem Trajectories for Outer Planets Missions\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EOn\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EMonday, July 15 at 2:00 p.m.\u0026nbsp;\u003C\/strong\u003E\u003Cbr\u003E\u003Cstrong\u003ECollaborative Design Environment (CoDE)\u003C\/strong\u003E\u003Cbr\u003EWeber Space and Technology Building (\u003Ca\u003ESST\u003C\/a\u003E II) and \u003Ca href=\u0022https:\/\/teams.microsoft.com\/l\/meetup-join\/19%3ameeting_ODg5MTAzZTgtZGZmMy00ZmQwLWJkNTctNTUxMGVlY2U3NTc3%40thread.v2\/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%2206e98244-c2b1-48b0-961a-c1fa1e553e03%22%7d\u0022\u003EMicrosoft Teams\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003Cbr\u003EMissions to the Outer Planets (planets and planetary bodies beyond the asteroid belt) are a critical \u003Ca\u003Ecomponent\u003C\/a\u003E in the future of space exploration. Currently, these missions are powered by solar panels and propelled by combustible fuels. This system is highly efficient in terms of thrust provided but adds a significant amount of weight to the spacecraft, leading to constraints on scientific payload weight. Although lightweight propulsion alternatives, specifically solar electric propulsion (SEP), are available, they cannot currently be used for outer planets missions due to the distance between the Sun and the mission destinations. Therefore, if the goal is to decrease payload weight without sacrificing mission time of flight, experimental propulsive systems must be considered.\u003C\/p\u003E\u003Cp\u003EThis thesis considers the performance of hybrid-thrust SEP-Chem propulsion, a novel propulsive technology under consideration for the Evolvable Mars Campaign, for outer planets missions. However, to perform the analysis necessary to evaluate the performance of this technology, trajectory optimization must be performed. Since well-documented trajectory optimization frameworks do not currently exist for mixed-thrust propulsive systems, this thesis intends to build a preliminary \u003Ca\u003Emethodology\u003C\/a\u003E for the mixed-thrust interplanetary trajectory problem posed by SEP-Chem missions to the outer planets.\u003C\/p\u003E\u003Cp\u003EThe \u003Ca\u003Emethodology\u003C\/a\u003E proposed in this thesis covers both sequence optimization (planetary bodies visited on the way to the destination) and path optimization (the ideal route between sequence points). It will allow for the determination of globally \u003Ca\u003Eoptimal\u003C\/a\u003E, robust trajectory solutions that may be applied to SEP-Chem missions to the outer planets, as well as to general mixed-thrust interplanetary trajectory problems.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee\u003C\/strong\u003E\u003C\/p\u003E\u003Cul type=\u0022disc\u0022\u003E\u003Cli\u003EProf. Dimitri Mavris \u2013 School of Aerospace Engineering (advisor)\u003C\/li\u003E\u003Cli\u003EProf. Brian Gunter\u2013 School of Aerospace Engineering\u003C\/li\u003E\u003Cli\u003EProf. Graeme Kennedy \u2013 School of Aerospace Engineering\u003C\/li\u003E\u003Cli\u003EDr. Bradford Robertson \u2013 School of Aerospace Engineering\u003C\/li\u003E\u003Cli\u003EDr. Stephen Edwards \u2013 Advanced Concepts Office, NASA Marshall Space Flight Center\u003C\/li\u003E\u003C\/ul\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EA Methodology for the Optimization of Hybrid SEP-Chem Trajectories for Outer Planets Missions\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"A Methodology for the Optimization of Hybrid SEP-Chem Trajectories for Outer Planets Missions"}],"uid":"27707","created_gmt":"2024-07-02 15:08:49","changed_gmt":"2024-07-02 15:09:29","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2024-07-15T14:00:00-04:00","event_time_end":"2024-07-15T16:00:00-04:00","event_time_end_last":"2024-07-15T16:00:00-04:00","gmt_time_start":"2024-07-15 18:00:00","gmt_time_end":"2024-07-15 20:00:00","gmt_time_end_last":"2024-07-15 20:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Collaborative Design Environment (CoDE) Weber Space and Technology Building (SST II) and Microsoft Teams","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"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":""}}}