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Newman lengyel dartpm-chal_case
 

Newman lengyel dartpm-chal_case

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    Newman lengyel dartpm-chal_case Newman lengyel dartpm-chal_case Presentation Transcript

    • Human Exploration & Operations Mission Directorate Demonstration of Autonomous RendezvousTechnology (DART) Risk Management Case Study J. Steven Newman D.Sc. NASA Human Exploration & Operations Risk & Knowledge Management Support Team ARES Corporation David Lengyel Manager – NASA Human Exploration & Operations Risk & Knowledge Management 
    • Welcome to the DART Case StudyWhat is this? How is this going to work?• This case study explores the • 15 min intro by facilitator and history of the DART mission video (if www available) and examines how changes in • Charts risk posture and management • Text Case expectations created unique • 20 min small group discussion challenges • 5 min to build your summary discussion chartsWho is it for? • Markers & Flip Charts• This case study is intended to provided aid program and project • 15 minute out-brief and large managers in making risk group discussion informed decisions Be thinking? – Take Notes! • What are the key risks? • How might the risks be mitigated? • Would I proceed post CDR? 2
    • The DART ProjectDart was initiated as a Class D, Low Cost, High RiskTechnology Demonstrator Mission• Goal: Demonstrate that a pre-programmed and unaided spacecraft could independently rendezvous with a satellite• Need: Advance the technology readiness level of a capability necessary to support future autonomous resupply of the International Space Station (ISS)• Other Objectives: • Provide results to support DoD DARPA Orbital Express Project • Provide results to support USAF Experimental Small Satellite Project 3
    • The DART Mission Plan27 objectives for a successful missionFour mission phases Launch and Early Orbit Phase • Launch from carrier aircraft to initial parking orbit Rendezvous Phase • Thrusters fire DART into phase 2 orbit below satellite Proximity Operations Phase • Move into satellite’s orbit • AVGS activation at waypoint • Perform close-range maneuvers Departure and Retirement Phase • Retire into short-lifetime orbit 4
    • Historical Implementation Context 5
    • Cost & Schedule ConstraintsCost Pressures • Cost doubled with additional testing • Standing army costs with delays for launch vehicle loads analysisSchedule pressures • Cancellation / gate reviews • MUBLCOM control issues 6
    • Other Constraints• Very small technical team• Contract providing limited government oversight/insight• Experience mixed / limited• Acceptance of risk in the initial verification approach• Limited systems engineering support• Changes in management riskposture• Late changes • Launch vehicle • Software 7
    • DART Key Elements contd. (SIGI) 8
    • Flight Systems Interactions GPS and AVGS collect navigation data Flight computer estimates position, velocity, bearing, and attitude based on sensor input Flight computer issues commands to maneuvering thrusters 9
    • Exercise: CDR Decision Point• The time is January 2003 – shortly after CDR• The DART Project had been shifted from 2nd Gen to the Orbital Space Plane (OSP) program• NASA senior management has announced that the DART Project is now a high priority, low risk mission - Class B – The autonomous rendezvous and docking capability has been determined to be essential for commercial ISS resupply missions• Given that 300 problems and issues were identified in the critical design review – indicating potential risks and problems – Agency senior management has called for a top level review at NASA Headquarters in Washington 10
    • Risk Posture ExerciseYour job is to prepare a 3-Chart briefing for NASAsenior management concerning next steps for theDART Project. Your briefing will address: 20 Min  Discussion• Chart 1: Top DART Risks• Chart 2: Proposed Mitigation Approaches 5 Min Build • Chart 3: Recommendations Charts • Proceeding to the Design Certification Review or cancelling the mission 11
    • DART Risk Management WebCase Visit us on the Web at: http://www.nasa.gov/externalflash/dart/ or http://www.nasa.gov/directorates/heo/home/DART Risk Management Case StudyCopyright © 2011 United States Government asRepresented by the Administrator of the NationalAeronautics and Space Administration. No copyright isclaimed in the United States under Title 17, U.S. Code. All Other Rights Reserved. 12