THEMIS Introduction Jan 29 2008 Lessons Learned Project
- Slides: 36
THEMIS Introduction Jan 29, 2008 Lessons Learned Project Overview 1 Jan 29, 2008
Agenda • Mission Objectives • Organization • Schedule • Mission Implementation • S/C & Instrument Description • Ground Systems • Mission Operations Lessons Learned Project Overview 2 Jan 29, 2008
Substorms Lessons Learned Project Overview 3 Jan 29, 2008
Earth and Space Platforms Aurora Current disruption Reconnection Lessons Learned Project Overview 4 Jan 29, 2008
Organization Program Organization • 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 $180 M (FY 07) Launch no later than March 2007 (Launch Feb 2007) • Performance Assurance MIDEX Quality Requirements Ø Implementation Strategy Use Heritage Instrumentation Coordinate Common Buy Parts Keep Probe/Probe Carrier Simple and Robust Leave Complexity on the Ground Build & Verify Probe 1, then Probes 2 -5 Lessons Learned Project Overview 5 Jan 29, 2008
Organization Mission Manager Frank Snow, GSFC Project Scientist Launch Vehicle D. Sibeck, GSFC G. Skrobott, KSC THEMIS PI V. Angelopoulos, UCB EPO Project Manager N. Craig, UCB P. Harvey, UCB Financial Mgr K. Harps, UCB Subcontracts J. Keenan, UCB Science Co-I’s Quality Assurance R. Jackson, UCB Scheduling D. Meilhan, UCB Mechanical/ Thermal Systems P. Turin, UCB C. Smith, UCB Mission Systems Software Systems Mag Cleanliness Mission I&T Operations D. King, UCB C. Russell, UCLA J. Mc. Cauley, UCB R. Sterling, UCB M. Bester, UCB Lessons Learned E. Taylor, UCB Probe/Probe Carrier Management UCB Oversight: D. King Swales Mgr: M. Cully Project Overview 6 Instruments P. Berg, UCB Jan 29, 2008
Organization Instruments P. Berg Instrument Data Processor Unit (IDPU) M. Ludlam Robert Abiad Peter Berg Heath Bersch Dorothy Gordon Selda Heavner Jim Lewis Jeanine Potts Nestor Castillo Electric Field Instrument (EFI) J. Bonnell Forrest Mozer Greg Delory Art Hull Bill Donakowski Greg Dalton Robert Duck Dan Schickele Stu Harris Hilary Richard Electrostatic Analyzer (ESA) C. Carlson C. Scholz M. Marckwardt Bill Elliott Heath Bersch Solid State Telescope (SST) D. Larson Fluxgate Mag (FGM) U. Auster Ron Canario Robert Lee T. Moreau TUBS/IWF Uli Auster K. Glassmeier W. Magnes CETP Alain Roux Bertran de la Porte Olivier Le Contel Christophe Coillot A. Bouabdellah Mag Booms LASP Robert Ergun Aref Nammari Ken Stevens Jim Westfall Lessons Learned Search Coil Mag (SCM) A. Roux Hari Dharan Tien Tan Bill Tyler Project Overview 7 Jan 29, 2008
Organization Ground Segment Mission Ops Science Ops Flight Dynamics Manfred Bester Mark Lewis Tim Quinn Sabine Frey Tai Phan GSFC/GCND David Sibeck Mark Beckman Bob De. Fazio Rick Harman Lessons Learned Ground Based Observatories All Sky Imagers Stephen Mende Stu Harris Harald Frey Ground Magnetometers Fielding & Operation (UC&UA) UCLA Chris Russell Joe Means Dave Pierce Bob Snare UC Eric Donovan Project Overview 8 UA J. Samson Jan 29, 2008
Mission Overview Launch Vehicle: Apogee: Perigee: Inclination: Date: Delta II, Eastern Range 91845. 2 km ± 9567 km 435 km ± 10 km (500 km ± 7 km on or after 3/1/2007) 16. 0 deg ± 0. 5 deg February 17, 2007 Space Segment Spacecraft: 5 Spinning Probes with Fuel for Orbit & Attitude Adjust Instruments: 3 -Axis Electric Field, Magnetic Field 3 -D Ion & Electron Particle Detectors Spin Rate: 20 RPM Orbit Period(s): 1, 2 and 4 days Orientation: Ecliptic Normal Ground Segment Observatories: Control Facilities: 20 Northern with All Sky Imagers and Magnetometers Mission and Science Operations Centers Operations Phases: Lifetime: Lessons Learned L&EO, Cruise, Ascent, Campaigns, De-orbit 2. 5 years Project Overview 9 Jan 29, 2008
Instrument Configuration IDPU: Instrument Data Processor Unit SPB : Spin Plane Booms (4 x) AXB : Axial Booms (2 x) SST : Solid State Telescope (2 x) ESA : Electrostatic Analyzer FGM : Fluxgate Magnetometer SCM : Search Coil Magnetometer Lessons Learned Project Overview 10 Jan 29, 2008
Probe Configuration EFI Axial Booms (2, Stowed) Antenna ESA Miniature Sun Sensor Fuel Tank IDPU EFI SPB Thruster A 2 Repress Tank Fuel Tank Transponder Thruster T 1 EFI SPB Thruster A 1 BAU Battery Gyros Thruster T 2 Lessons Learned AEB Project Overview 11 EFI SPB Jan 29, 2008 11
Launch Vehicle Lessons Learned Project Overview 12 Jan 29, 2008
Mission Data Flows THEMIS Probe TDRS Berkeley Ground Station KSC & Astrotech (1) UCB I&T Facility Secure Intranet JPL I&T Facility (3) Compatibility White Sands (3) Test Van Complex Wallops Ground Station Merritt Island Ground Station (3) Santiago Ground Station Secure VPN Tunnel via Open Internet (2) GSFC NMC Open IONet Berkeley Mission Operations Center Dial-up ISDN Line Notes: Open (1), Restricted (2) or Closed (3) IONet Different Routes for End-to-end Data Flows Between Probes and GS Elements Lessons Learned Project Overview 13 Hartebeesthoek Ground Station Jan 29, 2008
Ground Based Observatories • UCB/UCLA Delivered All 20 GBO (GMAG and ASI) units • Automatic Data Collection and Archiving in Progress • Remote Commanding and Diagnostics Working Geographic Longitude 195° Geographic North Pole Geographic Longitude 324° Geomagnetic North Pole Lessons Learned Courtesy H. Frey, UCB Project Overview 14 Jan 29, 2008
Ground Based Observatories GBO Sites EPO Sites Lessons Learned Project Overview 15 Jan 29, 2008
Ground Based Data Flows Lessons Learned Project Overview 16 Jan 29, 2008
Schedule Lessons Learned Project Overview 17 Jan 29, 2008
Major Reviews Lessons Learned Project Overview 18 Jan 29, 2008
Probe 2 I&T F 2 I&T at UCB Magnetics at JPL EMC at JPL TV at. Fit JPL Probe Check Lessons Learned VIB at JPL Project Overview 19 Jan 29, 2008
Probes 1, 3, 4, 5 I&T FM 4/5 in Thermal Vac Bus Assembly Probe I&T FM 2/FM 3 Thermal Vacuum Lessons Learned Project Overview 20 Jan 29, 2008
JPL 2 PCA Buildup PCA Assembly and Test Lessons Learned Project Overview 21 Jan 29, 2008
JPL 2 Environments Vibration Thermal Vacuum Lessons Learned Acoustics & Shock Spin Balance FM 2/FM 3 Thermal Storage Vacuum Project Overview 22 Jan 29, 2008
ASO Probe Processing Delivery to ASO Bolt Cutter Installation Solar Array Illumination Performance Tests Lessons Learned Project Overview 23 Jan 29, 2008
ASO Probe Fueling Vibration Acoustics Dry Weigh & Pressurize Fueling Thermal Vacuum Lessons Learned Spin Balance Storage Project Overview 24 Jan 29, 2008
ASO PCA Processing Final checks Acoustics Spin Balance PCA Integration SSS Installation Ready for Probes Spin Balance Lessons Learned Vibration Fairing Installation Storage Project Overview 25 Jan 29, 2008
Ground Based Observatories Production line @ UCB GMAG Lessons Learned Fort Yukon, AK, site ASI Project Overview 26 EPO GMAG Jan 29, 2008
Flight Profile Lessons Learned Project Overview 27 Jan 29, 2008
Mission Profile 81 Lessons Learned Project Overview 28 Jan 29, 2008
Orbit Plans Coast http: //sscweb. gsfc. nasa. gov/tipsod/ Placement Tail 1 http: //sscweb. gsfc. nasa. gov/tipsod/ Lessons Learned Project Overview 29 Jan 29, 2008
Probe Placement Decision • Assigned Constellation IDs (P 1−P 5) to Probe Buses THEMIS A THEMIS B THEMIS C THEMIS D THEMIS E • −> −> −> P 5 P 1 P 2 P 3 P 4 Decision Based on Probe Bus and Instrument Performance – Also Included Performance Details Found During Ground Testing – Only Differences Noted Are in Telecom System • Team Members Involved in Probe Placement Decision – PI, PM, MSE, MOM, MDL, Swales Probe Bus Systems Lead, Instrument Scientists, GSFC Program Manager and GSFC Project Scientist Lessons Learned Project Overview 30 Jan 29, 2008
Year at a Glance Predicted conjunctions exceed 188 hrs/season with ~50% margin Lessons Learned Project Overview 31 Jan 29, 2008
Inst Status Instrument Status Charts (5 Flight & Spare) Lessons Learned Project Overview 32 Jan 29, 2008
PFR Tracking PFR Status Charts (vs. 5 Flight & Spare) Lessons Learned Project Overview 33 Jan 29, 2008
PFR Statistics Coverage - Instrument I&T - Probe-Instrument I&T - Environments thru Launch Sequence of Events - Probe Bus A flow halted at Swales Probe Bus B, Inst B integrated first Completed Probe B before Integrating the rest Sequence: B-CDEA or 2 -3451 Lessons Learned Project Overview 34 Jan 29, 2008
PFR Statistics Lessons Learned Project Overview 35 Jan 29, 2008
Top Problems Bus I&T Probe 1 Deck Fabrication Problems (3 x) Bus I&T Probe 1 RCS Pressure Transducer Bus I&T Overall Schedule Probe I&T All BAU Sockets Showed Damage Probe I&T All Transponders Built with Pure Tin Lugs Probe I&T All Transponders Filter Modification Required Probe I&T All Diplexors Mod for Vib Failure, Venting Modification and Retest Environments Probe 2 Fuel Line Backup thermostat near spec Environments All EFI Axial Boom Covers Contaminated Pre-Launch All EFI Preamp Capacitors Needed Replacement Lessons Learned Project Overview 36 Jan 29, 2008
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