Solar Terrestrial Probes

1
Solar Dynamics Observatory (SDO) Quarterly
Status ReviewCode 464LRD April 17, 2008
Phase C/D
Project Manager Elizabeth Citrin Project
Scientist Dean Pesnell Deputy Project
Manager Rob Lilly DPM Resources Tom
Miller Financial Manager Wanda Harrell
May 11, 2005
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SDO OVERVIEW
Status As Of 05/04/05

• First Living With a Star (LWS) Mission, part of
  Sun-Earth Connection theme.
• Will characterize the dynamic state of the Sun
  enhancing the understanding of solar processes
  and space weather. Viewed as SOHO follow-on.
• NASA GSFC will manage the mission, build the S/C
  in-house, manage and integrate the instruments,
  develop/manage the Ground System and Mission
  Operations, and perform Observatory environmental
  testing at GSFC.
• SDO Investigations
• Helioseismic Magnetic Imager (HMI) PI Phil
  Scherrer Stanford Images the Suns
  helioseismic and magnetic fields to understand
  the Suns interior and magnetic activity.
• Atmospheric Imaging Assembly (AIA) and Guide
  Telescopes (GT) PI Alan Title LMSAL Multiple
  simultaneous, high-resolution images of the
  corona over a wide range of temperatures.
• Extreme Ultraviolet Variability Experiment (EVE)
  PI Tom Woods LASP, Univ. of CO measures the
  solar extreme ultraviolet (EUV) irradiance to
  understand variations.
• August 2008 (TBR) Atlas-V launch from KSC into
  GEO-Transfer Orbit (GTO), circularize to GEO-Sync
  Orbit, inclined 28.5 degrees.
• Provide continuous high rate data (150 Mbps)
  stream to dedicated ground station.
• Spacecraft robust, three-axis stabilized,
  solar-tracking with low jitter.
• Design Drivers Continuous high data rate/volume,
  Geosynchronous orbit (mass to orbit, radiation),
  5 year mission life, Instrument pointing and
  stability.

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Status as of 05/04/05
PROJECT
INSTRUMENT
GROUND SYSTEM
FEB MAR APR
FEB MAR APR
FEB MAR APR
SCIENCE TEAM
GROUND NETWORK
HMI

SYSTEMS ENGINEERING
DATA DISTRIBUTION
AIA
S/C SUBSYSTEMS
MISSION OPs. MOC
EVE
SOCs
LAUNCH SERVICES
PROCUREMENTS
LAUNCH VEHICLE
COST
R
R
FEB MAR APR
SCHEDULE
VEHICLE
R
R
ACCOMODATIONS
MANPOWER
SUMMARY ASSESSMENT
LAUNCH SITE
FEB MAR APR
LEGEND
TECHNICAL
GOOD SHAPE
COST
R
R
MINOR PROBLEM
Y
R
R
SCHEDULE
MAJOR PROBLEM
R
MAJOR PROBLEM
R
R
OVERALL
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FY05 Funding Rescission
Status As Of 05/04/05
DATE
ACTION
PROBLEMS/ISSUES
PROGRAMMATIC IMPACT
ESTAB.
COMPL.
R
Immediate and severe disruption to all mission
elements--reductions in manpower, delayed
purchases and component awards, instrument
delivery impacts. Launch delay of 4-6 months
cost cap will be exceeded.
4/1/05
Assess and report impacts to Program, Center and
HQ Develop new mission cost and schedule baseline
SDO FY05 funding has been reduced by 21M (30
of remaining funding)
7/15/05
Current Status

4/5/05 Instruments have been directed to
accommodate 6M reduction this year will impact
instrument deliveries. Structure fabrication
orders have been put on hold manpower reductions
have been identified and entered in the manpower
database (12 FTE in 05, 20 FTE in 06) S-band
transponder award has been put on hold battery
and solar array procurement activities have been
stopped Ground System Antenna work has been
delayed. FY06 will also be a big problem.
Working with KSC to move at least 15M out of
FY06 estimate 4-6 month launch delay and
increase in LV price. 4/29/05 Preliminary
mission schedule has been developed. KSC has
indicated that they can accommodate rephasing of
LV payments with 4 month launch delay.
Instruments are developing new plans.
Deobligation of funds on component procurements
is in progress with some limited success.
Downstaffing and other work deferrals are in
progress.
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SDO Risk Assessment
L I K E L I H O O D
LxC Trend Rank L C Approach Risk Title
1 2 4 M Ka-Comm Card 150MHz Oscillator
2 3 3 M QWKNUT Suitability
3 3 3 M Ka-Band Transmitter Acquisition
4 3 3 M ETU Development Schedule
5 3 3 M LMSAL Documentation Purchasing Systems
6 3 3 M Structural Assembly Facilities
5
New
4
3
2
New
1
1
2
3
4
5
CONSEQUENCES
Approach M - Mitigate W - Watch A - Accept R -
Research
Criticality
L x C Trend Decreasing (Improving) Increasing
(Worsening) Unchanged New Since Last Period
High
Med
Low
New
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SDO Risk Assessment (2 of 7) As of 5/6/05
Rank Risk Statement Approach Plan Status
1 Ka-Comm Card 150MHz Oscillator If the 150MHz hybrid crystal oscillator selected for the Ka-Comm Card is unavailable from Q-Tech Corp. then an alternative oscillator or design approach would have to be chosen (suitable sub not known) or the Science data rate would have to be reduced, not meeting the MRD data rate requirement. Context Q-Tech Corp. has delayed the pre-cap inspection of their 150MHz oscillator, indicating they are having technical difficulties. Parts Engineering to determine availability of alternative oscillators determine viability of Q-Tech Corp. and their ability to deliver 150MHz hybrid crystal oscillator. CDH to determine feasibility of alternative oscillators or alternative design approach for Ka-Comm Card. Determine feasibility of frequency multiplier to achieve 150MHz clock rate (18.8MHz x 8). Perform radiation testing to determine stability of osc. candidates perform life testing on osc. candidates to determine degradation over time investigate feasibility of temperature-controlled crystal oscillator. Investigate highest frequency oscillator (used in a similar application) currently being flown in similar environment. Qualification of the Q-Tech oscillator is proceeding. Contacting Vectron in search of suitable sub. Investigating feasibility of using a frequency multiplier in lieu of 150MHz oscillator. Mitigation Plan provided by CDH PDL SDO will perform radiation testing on Q-Tech and Aeroflex (prototype) oscillators to ensure freq. stability Q-Tech will test osc. to freq. higher than 150MHz to determine when part begins to degrade. Q-Tech to deliver 20 parts by end of May 05 for testing. Parts Engineering investigating alternative parts including oscillators from Bliley and Temas.
Med
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SDO Risk Assessment (3 of 7) As of 5/6/05
Rank Risk Statement Approach Plan Status
2 QWKNUT Suitability If the Starsys Research QWKNUT must be replaced, because inherent design flaws make it unsuitable for SDO use then the design changes could cause increased cost and schedule slips. Context A first-generation QWKNUT released prematurely during qual. testing (for another mission), prompting a look at the overall design. Perform detailed design evaluation of QWKNUT investigate/evaluate alternative release mechanisms (e.g., pyrotechnic) perform additional testing to prove design have SDO QA evaluate corrective action evaluate impact to electronics/mechanical design to facilitate alternative design approaches. Meetings held with STEREO Project (using QWKNUTs) and Starsys to determine course of action. Mechanisms Branch meeting held 2/16/05 to discuss QWKNUT issues/concerns generally, Branch satisfied with Starsys corrective action regarding failure of Generation 1 QWKNUT (SDO using modified Generation 3 QWKNUT) due to incorrect part (part common to all QWKNUT assemblies).. Proj. meeting held 2/22/05 to discuss Starsys corrective action and Branch meeting results.. Additional QWKNUT testing proposed. Project developing backup plan to implement pyro sep. nut and assessing impacts. PSE FPGA changes needed start date for this change is next month for implementation in the ETU.
Med
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SDO Risk Assessment (4 of 7) As of 5/6/05
Rank Risk Statement Approach Plan Status
3 Ka-Band Transmitter Acquisition If Ka-Band Transmitter ETU and Flight Units deliveries are late because transition to NGST is more difficult than anticipated, or production problems are encountered then impact to the Project Schedule Critical Path is almost certain. Ensure complete transfer of Code 567 Lessons Learned to NG in a timely manner closely monitor NG Transmitter production progress plan for impacts from Transmitter production delays continue Code 567 ETU development, transferring Lessons Learned to NG in real-time. Meetings held with Northrop Grumman to ensure transfer of Lessons Learned from in-house development effort preliminary schedule and ROM reserved full Implementation Plan from NG due end of March 05. All procedures have been transferred, schematics/layouts lagging. Very successful Ka-Band Transmitter CDR (3/18/05) next decision point is receipt of NG Implementation Plan. Ka-band transmitter development is a high priority. Schedule will be preserved, if at all possible, depending on success of other FY05 downstaffing and cost deferral efforts.
Med
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SDO Risk Assessment (5 of 7) As of 5/6/05
Rank Risk Statement Approach Plan Status
4 ETU Development Schedule If the ETU schedule cannot be met, or if ETUs need rework then the Project Schedule Critical Path will be impacted. Work with PDLs to determine how schedule margins can be maintained through ETU fabrication and test implement comprehensive ETU board testing program with electrical systems involvement Add targeted resources to higher risk ETU developments conduct regular meetings to assess progress. Working with PDLs to evaluate ways to preserve the existing schedule. Being worked as part of the SDO re-plan.
Med
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SDO Risk Assessment (6 of 7) As of 5/6/05
Rank Risk Statement Approach Plan Status
5 LMSAL Documentation Purchasing Systems If the transition to the new EPDM and ERP Document Management and Purchasing Systems encounters problems then drawing release and procurements may be delayed, impacting the Instrument development schedule Critical Path. LMSAL to obtain ATC permission to bypass EPDM until bugs have been resolved (at least until Flight dwgs. are released) obtain ATC resources to retrofit drawing database when it is realistic obtain training for new systems get temporary increase in CC limit as a work around until system is usable. This is risk 17 on the LMSAL Risk List in Dec. 04 Monthly Likelihood was elevated to High when ATC preparations were below expectations. From a Project perspective, it is likely that AIA/HMI Instrument delivery schedules will be impacted if this risk is not mitigated. LMSAL now have workarounds in place to bypass the EPDM and ERP as appropriate to preserve the current schedule. Corporate is still intent on installing new systems, but HMI/AIA requirements to be on-line will be delayed until the significant bugs of the installation have been worked out. Purchasing system (ERP) has proved unworkable and is impacting the instrument builds. Code 400 has contacted ATC management L-M Corporate is reviewing the issue.
Med
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SDO Risk Assessment (7 of 7) As of 5/6/05
Rank Risk Statement Approach Plan Status
6 Structural Assembly Facilities If SDO doesn't have adequate facilities for structural assembly of Flight structure and SVU by October 2005 then there would be day-by-day impacts to the Project Schedule Critical Path. Context Although SDO proactively worked its facilities needs with AETD, documented the agreements reached with AETD management on IT facilities and dates, and has based its planning on these agreements, AETD has informed SDO that the CRIF will not be available to SDO due to a decision to allocate this space to JWST. Code 500 is currently requesting that SDO consider other facilities. Work with Code 500 to find alternate integration facilities 50'x40' w/crane). Working with Code 500, but no appropriate facilities have been identified.
Med
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SIGNIFICANT EVENTS
Status as of 5/09/05

• The Project is responding to the FY05 funding
  rescission
• Preliminary impacts assessed and presented to HQ
  as part of the POP05 process
• Detailed re-planning is in progress
• The AIA structural model telescope completed
  acoustic testing at GSFC
• Results are positive filters look good
• Vibration testing starts this week
• Three flight CCDs have completed processing at
  e2V
• CCD quality is excellent
• One PRT experienced an open during thermal
  cycling due to apparent de-bonding failure
  review is in progress
• The Project, in conjunction with LRO and Code
  450, is evaluating upgrade of SDO Ground Station
  antennas to accommodate sharing with LRO and
  other future missions

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SDO Education and Public Outreach

• EPO Plan Collaborating with SECEF and others to
  finalize plan before
  official submission and review
• Support of Sun Earth Day Ancient Observatories,
  activities and live web
  cast from Chichen Itza. Instrument teams
  participated in activities at their
  local museums and schools.
• GSFC SDO E/PO efforts included
• Annapolis Book Festival
• NASA day for the Girl Scouts at the CCM
• Girl Scout Day at the National Air and Space
  Museum
• Educator Astronaut training
• Anne Arundel County High School Teacher training
• NSTA Conference, Dallas
• Instrument E/PO efforts included
• Science Fellows Service Learning Program
  (HMI/AIA)
• Family Science night, Stanford Solar Center
• NOTE New Initiatives slated for the next three
  months and product development have been put on
  hold due to funding

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SDO Project Summary Schedule
CY 2002
CY 2001
CY 2000
CY 2003
CY 2004
CY 2005
CY 2006
CY 2007
CY 2008
99
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q4
Start Implementation
7/04
(5 Yrs B/L EPM 8/13)
PCA MILESTONES
8/08
LRR
Formulation
Pre-Form
Ops
Implementation
Phase C/D
Phase A
Phase B
4/05
9/03
8/08
3/04
4/03
6/04
5/08
6/07
MISSION MILESTONES
LAUNCH
SRR/ SCR
ICR
PDR
CR
CDR
PSR
PER
AO Rel
Inst. Selections
INSTRUMENT DEVELOPMENT
1/02
8/02
3/07
Ship
AIA - LMSAL
Procure
Build/Test
Concepts/Design/Long Lead
2 mo.s
CDR
AO Process
9/02
Replan in Progress
Ship
2/07
Award Contracts
Procure
HMI - SU
Build/Test
Concepts/Design/Long Lead
2 mo.s
CDR
1/07
Ship
EVE - LASP
Procure
Build/Test
Concepts/Design/Long Lead
2 mo.s
CDR
Instrument Integration
SPACECRAFT DEVELOPMENT INTEGRATION
In-House ATP
3/07
3/06
Procure
Build Comp.s
S/C Int.
S/C Bus Studies
1 mo
2/08
6/07
Concepts/Design/Long Lead
Obs Test
OBSERVATORY TEST
(8 mo.s)
3 mo.s
5/05
5/08
GS CDR
GS MOR
GS TRR
1/07
GROUND SYSTEMS DEVELOPMENT
2/06
Procure
Freeze
3 mo.s
Ship
Procure/Develop/Test
Concepts/Design
5/08
L.V. Selection
LAUNCH VEHICLE DEVELOPMENT _at_ KSC
LV Development/Integration
(36 mo.s)
Launch
2 wks
Code M ATP Issue RFO
L-30 month funding profile
8/08
10/05
As of May, 2005
Reserve (4.5 months)
Original Date
Legend
Progress Bar
Original Date
SUStanford University
LMSAL Lockheed Martin Solar Astrophysics
Laboratory
LASP Laboratory For Atmospheric and Space Physics
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SDO CRITICAL MILESTONE CHART

Critical Milestone
Feb Mar Apr May Jun Jul Aug Sep
Oct Nov Dec Jan
EVE Instrument CDR Complete
1.
3rd week in Feb
2.
AIA Instrument CDR Complete
4/5-7
Spacecraft CDR Complete
3.
ACE ETU Functional Test Cmplt
4.
GCE ETU Functional Test Cmplt
5.
Replan in Progress
Ka-Band Transmitter ETU Box Test Cmplt
6.
PSE ETU Box Environmental Test Cmplt
7.
Complete Fabrication of the Flight Structure
Components
8.
AIA Telescope 1 Flt Optics Coating Complete
9.
HMI Instrument Electronics Box Flight Ready
10.
11.
12.
1. CCD processing changes and EM Filter thermal
vibe test to establish integrity 2. AIA C/D/E
contract fee issues delayed progress toward CDR
As of May 4, 2005
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FYO5 WORKFORCE
Status as of 5/6/05
17
Mass Budget Details
Budget based on 3200 kg separation mass. Margin
measured against dry mass, given a known
propellant load (updated per propellant maximum)
18
Sunlit Power Budget Details
Budget based current solar array size, with
generation capacity limited by bus voltage,
assuming one failed cell (worse failure than
failed string or failed PWM.)
19
Review Date Total of RFA's Responses submitted by Project RFA's closed by Review Team Open RFA's Comments
Ground System SRR Apr-03 36 36 36 0  
HMI PDR Nov-03 28 28 28 0  
AIA PDR Apr-04 14 14 14 0  
EVE PDR Dec-03 34 34 34 0  
Mission PDR Mar-04 41 38 15 26 2 required LV discussions 1 relating to contamination.
Ground System PDR Apr-04 23 23 23 0
HMI CDR Nov-04 19 19 8 11  
AIA CDR Feb-05 16 4 2 14  
EVE CDR Feb-05 16 16 0 16
Mission CDR Apr-05  56 0   0 56  
Ground System CDR May-05          
Totals