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THEMIS Mission Status at Peer UCB Instrument Critical Design Review UCB, April 19/20, 2004

THEMIS Mission Status at Peer UCB Instrument Critical Design Review UCB, April 19/20, 2004 Vassilis Angelopoulos University of California - Berkeley. Past to ~present. Phase B selection: Mar 22, 2003 Science/Systems Requirements Review – Jun/Jul 2003

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THEMIS Mission Status at Peer UCB Instrument Critical Design Review UCB, April 19/20, 2004

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  1. THEMIS Mission Status • at • Peer UCB Instrument Critical Design Review • UCB, April 19/20, 2004 • Vassilis Angelopoulos • University of California - Berkeley

  2. Past to ~present • Phase B selection: Mar 22, 2003 • Science/Systems Requirements Review – Jun/Jul 2003 • PDR – peer: Oct 8/9/15/16, 2003, Mission: Nov 13-14, 2003 • Confirmation Readiness Review – GSFC, Feb 4, 2004 • Confirmation Review – First attempt: HQ, Mar 4, 2004 (Aborted) • GSFC felt necessary to further reduce schedule risk • Developed better I&T flow, increased work, validated by GSFC Engineering • Developed 2 month slack in I&T flow, pushing launch to Oct 21 • Added P1 magnetics verification and calibration test • Added P1 EMC/EMI verification and calibration test • Added pressurant tank: increased mission deltaV to help: • mass posture (refocus bus on instrument hosting); • bus development schedule; • a compressed ascend and commissioning scenario • Lost dawn sector conjunctions; kept ascend schedule contingency • Instrument work kept-on full steam (ETU production & testing) • Test plans being detailed; test GSE/software being built • Test facilities being refurbished, procured or built • ETU vibration tests start April 21; electrical tests ongoing; TV: May

  3. ~Present to near future • Peer FGM/SCM CDR – Berlin, Paris, Apr 6/8, 2004 • Peer EFI/SST/ESA CDR – UCB, Apr 19/20, 2004 • Peer GBO CDR – Calgary, Apr 26/27, 2004 • Confirmation Review – HQ, Apr 22, 2004 • Baring further GSFC thunderbolts or risky reviews • Authority to spend >25% of cost • Can commit launch vehicle and launch date • Mission CDR: UCB Jun 15/16, 2003 • Design supported by ETU results satisfies requirements • Interfaces tested and per ICD • Flight test plans detailed and to environments expected • Probe I&T plans detailed;can test compliance with instr. Req’s • ETU Instrument Deliveries: April 2nd – Jun 3rd, 2004 • ETU Instrument I&T – starts May 28th, 2004 • F1 deliveries Aug 10th – Sep 27th, 2004 • F1 I&T at UCB mid-Aug to mid-Nov, 2004 • F1 EMI/MAG testing at UCB: Oct 22/26, 2004

  4. Outlook • We are relatively on-track despite 2-3 month delays in reviews • We turn adversity into opportunity and • enhance technical margins • improve development program quality • increase science capacity • A tribute to: • Explorer program support • Funds keep flowing – ensuring no delays • Engineering talent present and eager • Management support in scheduling and tracking • Tenacity, commitment and experience of team • Engineering excellence and success oriented attitude • Expect on time delivery of Integrated Suite at end of year: • EMI/MAG testing complete on instrument suite • Bugs worked out with principal attributes of IDPU-BAU interaction

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