1. THEMIS SRR MO-1UCB, July 8-9, 2003 THEMIS Mission Overview Peter R. Harvey Project Manager Space Sciences Laboratory University of California, Berkeley Mission Overview

2. THEMIS SRR MO-2UCB, July 8-9, 2003 Agenda AGENDA Primary Goals Mission Parameters Organizations Personnel WBS Processes Concept Schedule Cost

3. THEMIS SRR MO-3UCB, July 8-9, 2003 SRR Goals SRR GOALS Validate the Mission Requirements Documentation -Comprehensive : Do the requirements span the breadth of the effort? -Complete: Are there omissions in the requirements? -Correct:Are the requirements stated correctly? -Consistent: Do the requirements conflict anywhere? -Coordinated:Are the requirements allocated to subsystems properly? -Verifiable:Are the requirements testable? -Necessary:Are any requirements redundant or unnecessary? Promote Project-Wide Understanding of the Requirements -Understood:Do subsystems understand their requirements ? -Achievable:Are the subsystem requirements practical?

4. THEMIS SRR MO-4UCB, July 8-9, 2003 Mission Overview Mission Parameters –Launch Vehicle:Delta II, Eastern Range Injection:1.1 x 12 Re, 9 degrees inclination Date:August 2006 (+/- 2 months) –Space Segment Spacecraft:5 Spinning probes with fuel for orbit/attitude adjust Orbit Period(s):1, 2 and 4 days Orientation:Ecliptic normal –Ground Segment Observatories:20 Northern stations for Imaging and Mag Field –Operations Phases:L&EO (2 mo), Tail Science, Flank Magnetopause, Dayside, Eclipse, Deorbit Lifetime:2 years

5. THEMIS SRR MO-5UCB, July 8-9, 2003 Programmatic Aspects Programmatic Overview –PI Mode PI Team Provides Space, Ground, Data Segments PI Team Provides Cost, Schedule, Performance Assurance PI Team Provides Education/Public Outreach –Cost and Schedule Caps Single Cost Cap for the Mission Launch no later than March 2007 –Performance Assurance GSFC-410-MIDEX-001C (Nov 28, 1997) GSFC-410-MIDEX-003A (June 25, 2002) GSFC-311-INST-001 (Aug 1996)  Implementation Strategy Use Heritage Instrumentation Coordinate Common Buy Parts Keep Probe/Probe Carrier Simple and Robust

6. THEMIS SRR MO-6UCB, July 8-9, 2003 Organization Explorers Office Mission Mgr Explorers Office Mission Mgr U.Colo/LASP Bob Ergun U.Colo/LASP Bob Ergun TU-BS Uli Auster TU-BS Uli Auster ESTEC Philippe Escoubet ESTEC Philippe Escoubet Swales Aerospace Mike Cully Swales Aerospace Mike Cully THEMIS Organization Chart Subcontracts/Agreements Phases BCD U.C. Berkeley Vassilis Angelopoulos, PI Peter Harvey, PM U.C. Berkeley Vassilis Angelopoulos, PI Peter Harvey, PM KSC Mission Integ Mgr KSC Mission Integ Mgr CETP Bertrand de la Porte CETP Bertrand de la Porte GSFC/GNCD Karen Richon GSFC/GNCD Karen Richon UCLA Joe Means UCLA Joe Means Univ of Calgary Eric Donovan Univ of Calgary Eric Donovan Univ of Alberta J. Samson Univ of Alberta J. Samson IWF Werner Magnes IWF Werner Magnes

7. THEMIS SRR MO-7UCB, July 8-9, 2003 Organizations

8. THEMIS SRR MO-8UCB, July 8-9, 2003 Key Personnel

9. THEMIS SRR MO-9UCB, July 8-9, 2003 Processes Management Responsibilities Staffing and Facilities, Training and Certification Subcontract Generation and Tracking Schedule Generation and Tracking (*) Budget Generation and Tracking Cost.v. Schedule Compliance Risk Identification, Risk Tracking, Risk Actions (*) Descope Identification, Cost Evaluation, Descope Actions Trade Studies Identification, Evaluation, Change Implementation Action Item Generation, Distribution and Tracking Technical & Financial Report Generation * : Crucial Elements in a Constellation Project

10. THEMIS SRR MO-10UCB, July 8-9, 2003 WBS THEMIS Project 1.1 Management 1.2 Science 1.3 Systems Engineering 1.3 Systems Engineering 2. Space Segment Development 2. Space Segment Development 3. Ground Segment Development 3. Ground Segment Development 4. Mission Ops & Data Analysis 4. Mission Ops & Data Analysis 5. Education & Public Outreach 3.1 Mission Operations Center 3.2 Science Operations Center 3.3 Ground Based Observatories 4.1 Mission Operations 4.2 Data Analysis 1. Management, Science, Systems Eng. 1. Management, Science, Systems Eng. 2.1 Instruments 2.2 Spacecraft THEMIS Work Breakdown Structure

11. THEMIS SRR MO-11UCB, July 8-9, 2003 Processes Systems Engineering Responsibilities Requirements Identification and Formalization Design Coordination, Studies (FTA, FMEA, etc) Technical Review Coordination, Informal and Formal ICD Generation Configuration Control Verification Plan Development Design Compliance Operations Plan Development Action Item Management Weekly telecons on S/C bus, Instrumentation, Ground Systems Periodic On-site meetings * : Crucial Elements in a Constellation Project

12. THEMIS SRR MO-12UCB, July 8-9, 2003 Processes Performance Assurance Responsibilities Assurance Requirements Identification Implementation Plan Subcontractor Assurance Plan Reviews System Safety Support Supplier On-Site Inspections of Facilities and Procedures Parts and Materials Research, Selection Parts Qualification, Procurement incl. Common Buy Program Verification Planning Inspections and Test Verifications Failure Report Management Weekly telecons on S/C bus, Instrumentation, Ground Systems Periodic On-site meetings * : Crucial Elements in a Constellation Project

13. THEMIS SRR MO-13UCB, July 8-9, 2003 Processes Risk Management UCB/Swales Management Taking Lowest Risk Approach Overall –Assessments Generated by Knowledgeable Engineering –Tradeoffs Discussed with PI for Disposition Top Phase A Actions Taken to Retire Risk –Simplified Probe Carrier, Launch Sequence –Simplified Probe Maneuvering, Safing –Scheduled Early Testing to Detect Design Flaws –Dropped New Technology HCI and Micro-Gyro Top Phase B Trades –Changing Probe CPU from 80C196 to Coldfire (GSFC recommendation) –Developed a Possible Larger Tank Configuration –Switched from PDFE to Amptek design of SST electronics  Improved Margins and Performance and/or Lowered Risk

14. THEMIS SRR MO-14UCB, July 8-9, 2003 Consequence LevelTechnical Performance ImpactSchedule ImpactCost ImpactScience/Mission Impact 1Minimal or none 2Some margin reductionAdditional resources required to meet need date <5%Science objectives impacted or degraded, but science still valid 3Significant margin reductionMinor slip in need date5 to 7%A few science objectives not met but mission science still valid overall 4No margin remainingMajor slip in key milestone7 to 10%Some science objectives not met 5Below requirementUnrecoverable Project delay>10%Most or all mission science objectives not met Likelihood LevelLikelihood of Risk Occurrence 1Extremely Remote 2Unlikely 3Possible 4Likely 5Highly Likely Processes

15. THEMIS SRR MO-15UCB, July 8-9, 2003 20 5X5 Risk Matrix Risk Analysis Processes

16. THEMIS SRR MO-16UCB, July 8-9, 2003 Concept Essentials for Development & Operation of a Constellation –Control Mass & Power –Minimize Design Flaws –Emphasize Automated Testing and Appropriate GSE –Simple and Robust to Operate. Leave Complexity on the Ground. Minimize On-Orbit Computation (Similar to Lunar Prospector, ST-5) Use Ground System Computation (Similar to FAST, HESSI)

17. THEMIS SRR MO-17UCB, July 8-9, 2003 Concept Control of Mass & Power Prior Mission Performance Shows Good Compliance Margins Held by Management, Trended Monthly No Changes in Mass/Power since CSR Allocations Made to the Subsystem Level (inc Contingency)

18. THEMIS SRR MO-18UCB, July 8-9, 2003 Concept Minimizing Design Flaws Good Communications Between Developers –Phase A Developments Used Telecom and Email –Phase B Will Expand Use of Face-to-face Engineering Model Tests –Plan Includes EM Probe & Instrumentation I/F Testing –Early Identification of Interface Issues –Early Benefit of Operations Experience & Data Flow Tests Parts Control –Common-Buy Parts Program –Minimize Number of Different Part Types to Limit ALERT Risk –Maximize Confidence Level in the Parts We Have

19. THEMIS SRR MO-19UCB, July 8-9, 2003 Schedule Development and Maintenance Bottom Up Development Followed Concept Development Developers Generated Detailed Schedules Each Schedule has >30-40 Items Iterated to Understand Schedules Did Not Optimize Across Schedules Generated a Final Master Schedule Schedule Maintenance Developers Report to Sub-schedule Monthly Project Scheduler Updates Master Provides Status to Project Management Non-Compliances Get Management Attention Workarounds include Work Reduction, Addition Support, ReOrganization

20. THEMIS SRR MO-20UCB, July 8-9, 2003 Schedule Key Features Instrument Development EM Instrument I/F Testing with EM Probe I/F Integrate Instrument Complement at UCB Prior to S/C Integration Instrument Complement F1 Tested First Followed by Pairs Added Some Facilities for Qualifying Instruments in Parallel Spacecraft Development Integration and Test of Probe1 Completed Prior to Probes 2-5 Sufficient Manpower and Equipment for Parallel I&T Ground Development Development and Deployment of some GBOs 2 Winters Ahead

21. THEMIS SRR MO-21UCB, July 8-9, 2003 Resources Resource Planning Personnel –Similar to HESSI, Staffing Significantly from Internal and External Sources –Internal: Offloaded CHIPS Development Personnel –External: UC Personnel Hiring within Bay Area Facilities –Space Physics Research Group is the Largest Group at SSL –Clean Rooms for ESA, SST and Instrument I&T are in SPRG Allocation –Centralized Parts Storage in Flight Parts Storage Room (Unique Sensor Parts in Labs) Test Equipment –IDPU has 2 GSE Setups Planned –Sensor GSEs Are Generally a Mixture of Redundant & Special Purpose Equipment

22. THEMIS SRR MO-22UCB, July 8-9, 2003 Resources

23. THEMIS SRR MO-23UCB, July 8-9, 2003 Resources Other SSL Project Resource Requirements STEREO project is in Conflict SNAP and MMS Will Help with Offload

24. THEMIS SRR MO-24UCB, July 8-9, 2003 Cost Development and Maintenance Bottom Up Development Followed Schedule Development Developers Submitted Detailed Requirements Generated Level 3 Budgets by Month Iterated with Developers to Understand Costs Removed Overlapping Efforts between WBS Generated a Final Master Cost Generated Comparison Data from Prior Projects Reviewed and Approved by THEMIS Board of Directors, SPO, UCOP Budget Maintenance UCB Financial Data & Subcontractor Reports Matched to Budget Project Management Comparison of Cost v Schedule Non-Compliances Get Management Attention Workarounds include Work Reduction, Addition Support, ReOrganization

25. THEMIS SRR MO-25UCB, July 8-9, 2003 Cost Key Features Instrument Development Integrate & Test at UCB Using Mostly Existing Facilities Simplified Instrument Interfacing Automated Instrument Testing at S/C Lowers Extended Travel Efforts Spacecraft Development Simplified Probe Carrier Design Relaxed Probe Attitude Requirements and Simplified Design Complexity Left on the Ground Use of Existing Environmental Facilities at GSFC or Md Facilities Ground Development Leverage HESSI & FAST Operations Incorporate GSFC/GNCD Software and Expertise Utilization of Existing UCB ground station

26. THEMIS SRR MO-26UCB, July 8-9, 2003 Changes since CSR Key Features Space Development Probe Tanks: Increased Diameter Caused Redesign of EFI SPB Probe CPU : Change from UCB-provided 80C196 processor card INST CPU: UCB considering 8085 (HESSI), 80C196 (STEREO) INST SST : Switched from PDFE to Amptek design INST SST : Radiation Shielding for Detector Space-to-Ground Development COMM: Exploiting L3Com XPNDR to go from 0.4 to 1.0 Mbps Ground GBO : Simplifying communications using Iridium

27. THEMIS SRR MO-27UCB, July 8-9, 2003 Summary Leverage Experience in Similar Projects PI mode projects, Small Spacecraft, End-to-End Proven Processes Management, Systems Engineering, Quality Assurance, Risk Simple and Robust Constellation Concept Simplified Launch Sequence, Fail-safe, Orbit Adjustment Comprehensive Schedule Sufficient Time for Testing & Problems Detailed and Verified Cost Estimates Comprehensive, Verified to Models, Good Past Performance Avoid Developments No New Technology Required

28. THEMIS SRR MO-28UCB, July 8-9, 2003 THEMIS Probe and Probe Carrier Michael Cully P&PC Manager Swales Aerospace Mission Overview

29. THEMIS SRR MO-29UCB, July 8-9, 2003 P&PC Project Management AGENDA Swales Organization Risk Mitigation THEMIS Cost Basis FUSE Primary Instrument Structure EO-1 Spacecraft During ALI Instrument Integration and Alignment SCONCE Secondary Payload Adapter For Delta II ISS Two Tier CCHP Radiator

30. THEMIS SRR MO-30UCB, July 8-9, 2003 P&PC Organization/Staff

31. THEMIS SRR MO-31UCB, July 8-9, 2003 Risk Mitigations

32. THEMIS SRR MO-32UCB, July 8-9, 2003 Cost/Schedule Probe & Probe Carrier Mission Requirements & Instrument Interfaces well defined by UCB Detail WBS generated for Probe & Probe Carrier. Work well defined by Subsystem Leads and priced down to 5 th level based on recent programs –NRE & RE well defined –Comparison/Analogy – EO1, FUSE & MAP –Detail Engineering/Grassroots Long Lead items have been identified and Major subsystem/components rely on hard quotes from prominent Industry suppliers Detail Mission Schedule developed & iterated with subsystem Leads in order to time phase costing Probe Carrier & Probe Structures costing relies heavily on Swales experience on Commercial Aerospace programs. GSFC Testing facility costs for Mission integration based on quotes from Mantech Following completion of detail costing an assessment was performed using Parametric techniques based on Aerospace Corporation Small Satellite Cost Model (SSCM 98). Results correlate between Swales detail costing and SSCM within 10%. See detail in Swales Cost Proposal!