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Planetary Sciences Subcommittee of NAC 3 Feb 2010 MSL Status Update
Doug McCuistion Mars Exploration Program, Director
James L. Green Planetary Science Division, Director
MSL Technical Accomplishments Since Dec ‘09 PSS
• Actuators – All flight motors delivered – Full complement of flight actuators delivered to JPL
• Restarted LPHTA life test after December failure of bearing cage—~60% complete to 1 Martian life today
– If LPHTA’s complete 2x life successfully (March), we are DONE with actuators!
• Avionics – All FPGAs burned and Rover Compute Elements assembled and in regression
testing – Power avionics beginning acceptance tested – GNC/Landing Radar headed to full-up field testing
• SA/SPaH Robot Arm and Drill / CHIMRA EM testbed deliveries completed, and sample chain validation initiated.
• Descent Stage Propulsion rework complete, and cruise stage rework beginning
MSL Recent Developments • Only three major open issues remain:
– SAM Wide Range Pump • Both design’s life test units failed during December holidays • One variant made 2x start/stop lives, and .93 run-time life before stopped for high current
– Modest reduction of bearing pre-load expected to resolve • Assuming success w/new preload, SAM will deliver before rover environments
– Radar Transmit Receive Module • One of 6 TRM’s failed in test • Root cause: Capacitor short due to residual gold shard • Rework/replacement plans in development—no delivery impact expected
– MMRTG Beginning of Mission power shortfall • Flight unit power is below spec due to larger than expected thermo-electric degradation • Degradation is in-family with Pioneer units, but differences between EM and FM need to be
investigated • Tiger Team initiated with DOE to understand root cause and potential steps to mitigate
further degradation • Potential operational impacts under study—may be reduced ops in Martian winter.
• No major problems uncovered in the Western Titanium investigation. – >1000 suspect parts identified – About 100 left to fully investigate but negative impacts unlikely due to applications – Final dispositions planned early March 2010
MSL Recent Developments
• Launch slip budget history – Oct ’08: Initial augmentation Rough Order of Magnitude (ROM) estimate from
the Project ~$400M – June ‘09: $432M Approved by Agency Program Management Council
(APMC) • Also directed “additional reserves” be set aside to cover most of the Standing
Review Boards estimates • Commitment to Congress in the Rebaseline Report was NTE of $495M
• MSL “Readiness to Proceed” Review completed Nov 18-20, 2009 – Key objectives:
• Assess technical readiness to proceed into system-level assembly and test • Assess budget and reserve status for development work remaining
– Project requested modest amount of additional reserves (above $432M established as true cost-to-go for development, after October ‘08 ROM)
MSL Recent Developments
• Standing Review Board Conclusions: – 2011 launch opportunity remains viable with good schedule margin against Oct.
window – Budget reserves (including Project’s new request) are inadequate. – Major risks are understood and are being addressed. – Project is well positioned and prepared to re-start ATLO, with a well thought out and
mature plan.
• Directorate PMC held January 15th – Referred MSL to APMC recommending augmentation of reserves to prevent work
slippage into 2011
• Agency PMC held January 26th – APMC assessed:
• Should MSL proceed on toward 2011 launch date? • Does the funding requirement at completion remain within the $495M commitment?
– APMC results: • Unanimous approval to proceed—project is stabilizing technically and financially • Cost estimates, including risks, remain well within predictions and external commitment
» SMD/PSD/MEP funding supports needs without no new impacts 5
MSL Budget Status—Green
Budget Status and Impacts Presented to the July 2009 PSS • Impacts must be contained in the Planetary Division
– The Mars Program will repay non-Mars “loan”
• Impacts to cover low- to mid-range budget needs, in order: – Reduce or eliminate Mars Program APA in FY10 and FY11 – Reduce US portion of Mars-16/18/20 missions – Reduce Discovery future and New Frontiers mission lines (no impact to current schedules)
• Impacts increase to cover mid- to upper-range budget needs, in order: – Further reduce US portion of Mars-16/18/20 missions – Delay LADEE and ILN missions – Delay New Frontiers 3 phase B selection
Updated FY11 Budget Status: • MSL project has requested funding that is within the “low to mid-range values”
– No additional Planetary Program impacts (ie: No delays or impacts to R&A)
• Funding request is within the Commitment to Congress discussed in the Rebaseline Report ($495M)