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UARS WEEKLY STATUS REPORT - 26 Nov 2004
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SOLSTICE
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Nothing received.
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SUSIM
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SUSIM successfully gathered daily mid (1.1 nm) resolution, MgII,
occultation, solar pointing offset, and continuous monitoring
scans for time periods with UARS telemetry or tape recording.
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PEM
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Nothing received.
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HALOE
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Nothing received.
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MLS
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Nothing received.
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HRDI
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Nothing received.
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MPG
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The MPG continues to serve as the point-of-contact for UARS
instrument operations in support of the Science Traceability
Mission of UARS.
Daily processing of instrument Daily Activity Plans continues
with no problems.
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CDHF
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Nothing received.
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FOT
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REPORTING PERIOD
This report covers 13 November 2004 (Orbit 72097, GMT Day 318) through
19 November 2004 (Orbit 72202, GMT Day 324).
SPACECRAFT OPERATION
The observatory is now in Forward Flight (Southern Hemisphere viewing)
and is performing nominally under two-battery operations. The
instrument operational changes were:
INSTRUMENT OPERATIONAL CHANGES
Instrument Time Orbit Comment
-NONE THIS REPORT PERIOD.
The beta angle ranged between the angles of 34.8 degrees to 37.4
degrees for this report period. The beta angle is now decreasing
towards a minimum angle of 0 degrees on 02 December 2004 (DOY 337).
Spacecraft battery 1, 2, and 3 performance monitoring continues.
Battery 1 remains OFF the charge relay. Battery 2 and Battery 3 are
currently maintaining greater than 23.6 V end-of-night (EON) load bus
voltage. Battery temperatures are stable with a temperature delta
between Battery 2 and Battery 3 of 0.64 to 0.97 degrees C. Additional
battery performance data for each battery on 12 November and 19
November 2004 are provided in Appendix D.
The clock error ranged from 7.7 to -9.5 msec during this report
period. Clock rate adjustments are listed in Appendix C.
All instrument and subsystem engineers were advised on the initial
excursion of ALERTS or Out-Of-Limits conditions detected by the FOT
for this report. A summary is listed below and the details of ALERT
and Out-Of-Limits occurrences are listed in Appendix B.
OUT-OF-LIMITS = 00
ALERTS = 00
The following real-time command sheets were executed for the listed
operational element(s) during this report period (see Appendix A).
FOT = 00
UARS Anomaly Reports initiated during this report period are listed in
Appendix E and summarized below.
FOT = 04
Two (2) Anomaly Reports remained OPEN at the end of this report period
(see Appendix E).
GROUND SYSTEM OPERATION
Four (4) operational support problems occurred this period. Anomaly
Reports are included in Appendix E.
The data loss calculations are no longer being supplied by Data
Capture Facility (DCF).
OTHER SIGNIFICANT EVENTS
UARS SATELLITE OPERATIONS
This week the FOT continued to work on integrating the SMA
functionality. Testing was done regarding the file transfer issue
between the User Planning System and CMS to help isolate the problem.
This testing revealed that the issue may lie in the new CMS code, so
sections of the code are being review by software development.
MEETINGS
The FOT called a meeting with CMS software development and the CMS
system administrator on 17 November 2004 to discuss the SMA problems.
At this meeting the status of the investigation was reviewed and
future tests and plans were outlined.
FUTURE SIGNIFICANT EVENTS
The next UARS Yaw slew is scheduled for 02 December 2004 (DOY 337).
This maneuver will be a Forward to Reverse Flight maneuver (Northern
Hemisphere viewing).
Attachments: Appendix A, Real-time Command Sheets
Appendix B, Out-Of-Limits & ALERT Occurrences
Appendix C, Clock & Solar Array Rate Corrections
Appendix D, UARS Battery Performance Data
Appendix E, UARS Anomaly Reports
APPENDIX A
REAL-TIME COMMAND SHEETS
Week ending 19 November 2004
ORBIT AOS NO. SUBSYS REASON
----- --- --- ------ ------
-NONE THIS REPORT PERIOD.
APPENDIX B
OUT-OF-LIMITS & ALERTS OCCURRENCES
Week ending 19 November 2004
The following Out-Of-Limits occurrences were detected:
MNEMONIC STATE DESCRIPTION ORBITS
-------- ----- ----------- ------
-None this report period.
The following ALERT occurrences were detected:
MNEMONIC DESCRIPTION ORBITS
-------- ----------- ------
-None this report period.
APPENDIX C
CLOCK & SOLAR ARRAY RATE CORRECTIONS
Week ending 19 November 2004
CLOCK DRIFT RATE ADJUSTMENTS
ORBIT TIME CLOCK RATE CHANGE
----- ----- -----------------
-None this report period.
APPENDIX D
UARS BATTERY PERFORMANCE DATA
Week ending 19 November 2004
12 November 2004 - GMT Day 317 Beta = 32.5 deg, SA Pos = 269 deg
DIFF V (mV) TEMP (C) CURR (amp) EON V AVE C/D AVE
BAT MAX/MIN MAX/MIN MAX/MIN MIN RATIO DOD(%)
--- ------- -------- ---------- ----- ------- ------
1 -700.0/-700.0 -2.42/-3.68 +00.0/+00.0 07.0 0.00 0.0
2 05.6/- 67.2 +6.76/+5.46 +28.0/-15.2 26.1 1.04 20.3
3 -5.6/-140.0 +5.46/+4.50 +27.2/-14.8 26.1 1.04 19.8
19 November 2004 - GMT Day 324 Beta = 37.4 deg, SA Pos = 269 deg
DIFF V (mV) TEMP (C) CURR (amp) EON V AVE C/D AVE
BAT MAX/MIN MAX/MIN MAX/MIN MIN RATIO DOD(%)
--- ------- -------- ---------- ----- ------- ------
1 -700.0/-700.0 -2.42/-3.68 +00.0/+00.0 07.0 0.00 0.0
2 -05.6/ -95.2 +6.43/+5.46 +27.2/-15.2 26.2 1.04 19.7
3 -11.2/-168.0 +5.14/+4.50 +25.6/-14.4 26.2 1.03 19.0
V/T LEVEL CHANGES
ORB# AOS TIME LVL FR-TO
----- -------- ---------
-None this report period
APPENDIX E
UARS ANOMALY REPORTS
Week ending 19 November 2004
NEW ANOMALY REPORTS GENERATED
AR NO. SUBSYS ORBIT TIME CDS PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
04-088 FOT 72109 318/1856 N/A File Transfer Problem
04-086 FOT 72116 319/0550 30832 Generic Late Acquisition
04-086 FOT 72121 319/1339 30832 Generic Late Acquisition
04-086 FOT 72194 324/0935 30832 Generic Late Acquisition
ANOMALY CLOSURE INFORMATION RECEIVED
AR NO. SUBSYS ORBIT TIME CDS PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
04-085 FOT 71999 311/1117 37512 TDRSS 275 Dropout/Eclipse Prim
04-087 FOT 72009 312/0239 37516 TDRSS 275 Dropouts
ANOMALY INVESTIGATION REPORTS GENERATED
AIR NO. SUBSYS ORBIT TIME CDS PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
-None this report period.
OPEN ANOMALY REPORTS
AR NO. SUBSYS ORBIT TIME CDS PROBLEM/DATA LOSS
------ ------ ----- ---- --- -----------------
04-088 FOT 72109 318/1856 N/A File Transfer Problem
04-086 FOT See List Nov 04 30832 Generic Late Acquisition