{"593409":{"#nid":"593409","#data":{"type":"event","title":"Ph.D. Thesis Proposal:  Andrew T. Bellocchio","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EPh.D. Thesis Proposal by\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Ch2\u003E\u003Cstrong\u003EAndrew T. Bellocchio\u003C\/strong\u003E\u003C\/h2\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E(Advisor: Prof. Daniel Schrage,)\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Ch2\u003E\u003Cstrong\u003E\u0026ldquo;Balancing Maintenance Free Operating Period Rotorcraft with Cost Capability Analysis\u0026rdquo;\u003C\/strong\u003E\u003C\/h2\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003E2:00 pm, Friday, July 28, 2017\u003Cbr \/\u003E\r\nWeber SST III, Collaborative Visualization Environment (CoVE)\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EFor the past 50 years, the paradigm of on-condition rotorcraft maintenance has yielded to random failures and subsequent unscheduled maintenance that regularly disrupt flight operations.\u0026nbsp; The British Ultra-Reliable Aircraft Pilot Program of the late 1990s introduced the paradigm of Maintenance Free Operating Period (MFOP) as a solution. \u0026nbsp;An MFOP aircraft is a fault tolerant, highly reliable system that minimizes disruptive failures for an extended period of operations.\u0026nbsp; After the MFOP, a single Maintenance Recovery Period (MRP) consolidates the repair of accrued faults and inspections in order to restore aircraft\u0026rsquo;s reliability for the next MFOP cycle.\u0026nbsp; An MFOP strategy provides assurance to the user that flight operations will continue without disruption for the duration of the MFOP at a given survivability rate.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe U.S. Department of Defense recently adopted MFOP as its maintenance strategy for the next generation of rotorcraft named the Future Vertical Lift (FVL) Family of Systems.\u0026nbsp; The U.S. military desires uninterrupted flight operations to enable a more expeditionary force that operates from remote, austere bases.\u0026nbsp; An initial goal of a 100-flight hour MFOP at 90% availability will be necessary to support such deployments; yet, today\u0026rsquo;s fleet has the system reliability to fly less than ten hours without significant repair at 75% availability.\u0026nbsp; Beyond FVL, the military desires to transition to near-zero maintenance with an MFOP between 480 hours and 720 hours.\u0026nbsp; The challenge presented is to achieve an order of magnitude improvement to meet the FVL target and set the conditions for near-zero maintenance while still remaining affordable.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe goal of the proposed research is to measure the balance between capability, availability, dependability, and life cycle cost of an MFOP rotorcraft.\u0026nbsp; It will utilize a Petri net-like state space in an integrated Discrete Event Simulation to model the MFOP, MRP, and their survivability as operational metrics.\u0026nbsp; The work will identify which subsystem(s) limit the MFOP of an aircraft and which components drive MRP higher.\u0026nbsp; It will explore the relationship between MFOP and MRP as well as their cost and vehicle performance implications.\u0026nbsp; It will test the hypothesis that an operational commander has some control over MFOP by varying the MRP through an aggressive lifing policy.\u0026nbsp; Ultimately, the work will demonstrate an application of Cost Capability Analysis to inform decision makers on vehicle design and technology trade decisions in a near-zero maintenance context.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members: \u003C\/strong\u003E\u003Cbr \/\u003E\r\nProf. Daniel Schrage, Advisor\u003Cbr \/\u003E\r\nProf. Dimitri Mavris\u003Cbr \/\u003E\r\nDr. Vitali Volovoi\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"\u201cBalancing Maintenance Free Operating Period Rotorcraft with Cost Capability Analysis\u201d"}],"uid":"33975","created_gmt":"2017-07-10 18:32:57","changed_gmt":"2017-07-10 18:32:57","author":"Margaret Ojala","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2017-07-28T15:00:00-04:00","event_time_end":"2017-07-28T17:00:00-04:00","event_time_end_last":"2017-07-28T17:00:00-04:00","gmt_time_start":"2017-07-28 19:00:00","gmt_time_end":"2017-07-28 21:00:00","gmt_time_end_last":"2017-07-28 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"1239","name":"School of Aerospace Engineering"}],"categories":[],"keywords":[{"id":"2082","name":"aerospace engineering"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}