{"674851":{"#nid":"674851","#data":{"type":"event","title":"PhD Proposal by Eleni Sotiropoulos","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EEleni Sotiropoulos\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003E(Advisor: Prof. 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\u003EMethodology to Enable Scenario-Based Training of Accident-Prone Vortex Ring State (VRS) Encounters in Helicopter Flight Simulators\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003EOn\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EFriday, June 7th\u0026nbsp;at 9 a.m.\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECollaborative Visualization Environment (CoVE)\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EWeber Space and Technology Building (SST II)\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003Eand\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EMicrosoft Teams\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EFrom\u0026nbsp;2008\u0026nbsp;to\u0026nbsp;2021,\u0026nbsp;48\u0026nbsp;helicopter\u0026nbsp;accidents have\u0026nbsp;involved\u0026nbsp;Vortex Ring\u0026nbsp;State\u0026nbsp;(VRS)\u0026nbsp;encounters\u0026nbsp;in\u0026nbsp;the\u0026nbsp;United\u0026nbsp;States.\u0026nbsp;Ambitious\u0026nbsp;rotorcraft\u0026nbsp;safety improvement\u0026nbsp;objectives\u0026nbsp;have\u0026nbsp;been\u0026nbsp;set\u0026nbsp;by\u0026nbsp;the helicopter\u0026nbsp;community\u0026nbsp;for\u0026nbsp;the\u0026nbsp;current\u0026nbsp;decade,\u0026nbsp;which\u0026nbsp;will\u0026nbsp;require\u0026nbsp;to\u0026nbsp;mitigate\u0026nbsp;VRS-induced\u0026nbsp;accidents.\u0026nbsp;However,\u0026nbsp;due\u0026nbsp;to\u0026nbsp;the\u0026nbsp;inherent\u0026nbsp;risks, training\u0026nbsp;for\u0026nbsp;fully\u0026nbsp;developed\u0026nbsp;VRS\u0026nbsp;during\u0026nbsp;actual\u0026nbsp;flights\u0026nbsp;is\u0026nbsp;discouraged.\u0026nbsp;Thus,\u0026nbsp;simulators\u0026nbsp;could\u0026nbsp;provide\u0026nbsp;a\u0026nbsp;safer\u0026nbsp;alternative\u0026nbsp;for\u0026nbsp;pilot\u0026nbsp;training,\u0026nbsp;assuming\u0026nbsp;that\u0026nbsp;they\u0026nbsp;accurately replicate\u0026nbsp;the\u0026nbsp;helicopter\u0027s\u0026nbsp;flight\u0026nbsp;dynamics\u0026nbsp;during\u0026nbsp;VRS.\u0026nbsp;To be\u0026nbsp;able\u0026nbsp;to\u0026nbsp;perform VRS\u0026nbsp;Scenario-Based\u0026nbsp;Training\u0026nbsp;in\u0026nbsp;flight\u0026nbsp;simulators,\u0026nbsp;the\u0026nbsp;latter\u0027s\u0026nbsp;ability to represent\u0026nbsp;VRS\u0026nbsp;onset\u0026nbsp;and\u0026nbsp;recovery\u0026nbsp;must\u0026nbsp;be\u0026nbsp;evaluated.\u0026nbsp;However,\u0026nbsp;the\u0026nbsp;current\u0026nbsp;qualification\u0026nbsp;standards\u0026nbsp;for\u0026nbsp;VRS\u0026nbsp;simulation\u0026nbsp;remain\u0026nbsp;subjective, raising\u0026nbsp;uncertainties\u0026nbsp;about\u0026nbsp;the\u0026nbsp;simulator\u0027s\u0026nbsp;suitability\u0026nbsp;for\u0026nbsp;pilot\u0026nbsp;training\u0026nbsp;and\u0026nbsp;the\u0026nbsp;potential\u0026nbsp;risks\u0026nbsp;associated\u0026nbsp;with\u0026nbsp;negative\u0026nbsp;transfers\u0026nbsp;of\u0026nbsp;skills\u0026nbsp;from\u0026nbsp;the\u0026nbsp;simulator\u0026nbsp;to the\u0026nbsp;helicopter.\u0026nbsp;Hence, it\u0026nbsp;is\u0026nbsp;necessary to\u0026nbsp;develop\u0026nbsp;a\u0026nbsp;more\u0026nbsp;objective\u0026nbsp;fidelity\u0026nbsp;assessment\u0026nbsp;of\u0026nbsp;flight\u0026nbsp;simulators in\u0026nbsp;VRS.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThe first step\u0026nbsp;requires building and evaluating\u0026nbsp;non-real-time\u0026nbsp;simulations.\u0026nbsp;To\u0026nbsp;that end, we will develop\u0026nbsp;simulations using two\u0026nbsp;types of inflow\u0026nbsp;models in Flightlab: one\u0026nbsp;real-time\u0026nbsp;dynamic\u0026nbsp;inflow akin\u0026nbsp;to those\u0026nbsp;found in\u0026nbsp;flight simulators,\u0026nbsp;the\u0026nbsp;other a higher fidelity inflow\u0026nbsp;model\u0026nbsp;(VVPM) unsuited\u0026nbsp;for real-time simulation. These two\u0026nbsp;models can then\u0026nbsp;be\u0026nbsp;compared\u0026nbsp;with one another and\u0026nbsp;with\u0026nbsp;flight test\u0026nbsp;data to validate\u0026nbsp;the use\u0026nbsp;of\u0026nbsp;the\u0026nbsp;VVPM-based\u0026nbsp;one\u0026nbsp;to\u0026nbsp;supplement flight test data.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThe second\u0026nbsp;step focuses on VRS onset. A flight\u0026nbsp;test\u0026nbsp;is\u0026nbsp;performed\u0026nbsp;to obtain data\u0026nbsp;on the helicopter\u0027s\u0026nbsp;behavior in\u0026nbsp;VRS. Then, assuming\u0026nbsp;the behavior\u0026nbsp;in VRS\u0026nbsp;of\u0026nbsp;the\u0026nbsp;Flightlab\u0026nbsp;model developed in the previous\u0026nbsp;step\u0026nbsp;is deemed acceptable, it can\u0026nbsp;be used\u0026nbsp;along with\u0026nbsp;the flight test data\u0026nbsp;to assess,\u0026nbsp;in flight simulators,\u0026nbsp;the accuracy\u0026nbsp;of\u0026nbsp;the representation\u0026nbsp;of the VRS\u0026nbsp;onset. This\u0026nbsp;entails defining a set\u0026nbsp;of\u0026nbsp;metrics\u0026nbsp;to use for\u0026nbsp;the evaluation.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EFollowing the same approach\u0026nbsp;as the\u0026nbsp;previous\u0026nbsp;step,\u0026nbsp;the\u0026nbsp;third\u0026nbsp;step\u0026nbsp;centers\u0026nbsp;on VRS recovery techniques, using data\u0026nbsp;from a flight\u0026nbsp;test and\u0026nbsp;from modeling results to\u0026nbsp;test the\u0026nbsp;accuracy\u0026nbsp;of recovery techniques\u0026nbsp;modeling in\u0026nbsp;flight simulators. Here as well,\u0026nbsp;a set of\u0026nbsp;metrics\u0026nbsp;must be\u0026nbsp;defined to evaluate simulators\u0027 performance\u0026nbsp;for this task. Additionally, these experiments provide insight into the\u003C\/p\u003E\u003Cp\u003Eeffectiveness and potential limitations of the different techniques for VRS recovery.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EOnce the accuracy of the simulator has been determined, we can develop VRS-inducing scenarios\u0026nbsp;based on accidents and suitable to the flight simulator\u0027s performance. A group of\u0026nbsp;pilots can then test this\u0026nbsp;set\u0026nbsp;of\u0026nbsp;scenarios to demonstrate its use in VRS accident prevention\u0026nbsp;Scenario-Based Training, by evaluating pilots\u0027 VRS awareness, avoidance, detection, and recovery during the simulations.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EProf. Dimitri Mavris \u2013 School of Aerospace Engineering (advisor)\u003C\/li\u003E\u003Cli\u003EProf. Daniel P. Schrage \u2013 School of Aerospace Engineering\u003C\/li\u003E\u003Cli\u003EProf. Marilyn Smith \u2013 School of Aerospace Engineering\u003C\/li\u003E\u003Cli\u003EDr. Alexia Payan \u2013 School of Aerospace Engineering\u003C\/li\u003E\u003Cli\u003EMr. Charles C. Johnson \u2013 Federal Aviation Administration (FAA)\u003C\/li\u003E\u003C\/ul\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EMethodology to Enable Scenario-Based Training of Accident-Prone Vortex Ring State (VRS) Encounters in Helicopter Flight Simulators\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Methodology to Enable Scenario-Based Training of Accident-Prone Vortex Ring State (VRS) Encounters in Helicopter Flight Simulators"}],"uid":"27707","created_gmt":"2024-05-22 15:51:18","changed_gmt":"2024-05-22 15:51:51","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2024-06-07T09:00:00-04:00","event_time_end":"2024-06-07T11:00:00-04:00","event_time_end_last":"2024-06-07T11:00:00-04:00","gmt_time_start":"2024-06-07 13:00:00","gmt_time_end":"2024-06-07 15:00:00","gmt_time_end_last":"2024-06-07 15:00:00","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":"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":""}}}