UARS Weekly Status Report

14 November 2003




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                UARS WEEKLY STATUS REPORT - 14 NOV 2003

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***********
SOLSTICE
***********

SOLSTICE was under daytime only operations for three days this week in 
support of the yaw maneuver. This limits but does not eliminate our 
solar observations as we are powered off during orbit night. We received 
nearly 52% of each day's data amounting to 370 minutes of solar 
observing time per day.

***********
SUSIM
***********

SUSIM was turned off for the yaw-around on Nov. 10.  For earlier
days, the instrument successfully gathered all of its daily mid
(1.1 nm) resolution, weekly offset, and O2 occultation scans during
periods of UARS telemetry or periods of onboard tape recording.

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ACRIM
***********

Nothing received.

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PEM
***********

Nothing received.

***********
HALOE 
***********

Nothing received.

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MLS
***********

Nothing received.

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HRDI
***********

Nothing received.

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WINDII
***********

Nothing received.

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MPG
***********

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.

***********
CDHF
***********

Nothing received.
                  
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FOT
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                           REPORTING PERIOD

This report covers 01 November 2003 (Orbit 66412, GMT Day 305) through
07 November 2003 (Orbit 66517, GMT Day 311).


                         SPACECRAFT OPERATION

The observatory is now in Reverse Flight (Northern Hemisphere viewing)
and   is  performing  nominally  under  two-battery  operations.   The
instrument operational changes were:


                    INSTRUMENT OPERATIONAL CHANGES

       Instrument    Time          Orbit     Comment
       PEM (Z/H)     310/2312      66502     POWER OFF
       PEM AXIS      311/0313      66504     POWER OFF
       HALOE         311/2309      66517     POWER OFF


The  beta  angle  ranged between the angles of 41.5  degrees  to  14.4
degrees  for  this  report period.  The beta angle is  now  decreasing
towards a minimum angle of 0 degrees on 11 November 2003 (DOY 315).

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 0.95 to 0.97 degrees C.  Additional
battery  performance  data  for each battery  on  31  October  and  07
November 2003 are provided in Appendix D.

The  clock  error  ranged from -10.3 to 0.4 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
    SUSIM     =    00
    SOLSTICE  =    00
    PEM       =    02
    HALOE     =    01
    HRDI      =    00



UARS Anomaly Reports initiated during this report period are listed in
Appendix E and summarized below.

    FOT  =    00

Zero (0) Anomaly Reports remained OPEN at the end of this report period
(see Appendix E).


                        GROUND SYSTEM OPERATION

Zero  (0) 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

The official release of the new Eclipse software was received on 04
November 2003.  The FOT checked all new modifications made to the
software and all changes made are working properly.  The FOT also
performed some regression testing to make sure existing functionality
had not changed and the testing was successful.  Only a few database
changes were requested to modify the state text of a few 3 TDRS
pertinent mnemonics.  These changes will be delivered and tested next
week.

The CMS software was tested this week and the ephemeris generation
process is now working properly.  Several tests were performed and all
executed as planned.  Acceptance testing continued after this problem
was resolved and a new issue with the CMS pollers was found on CMS-B.
This will most likely require some more code changes and will
hopefully be resolved early next week.

In parallel, the FOT is also working with the FSW group to review and
test the new flight software uplink procedure.  Testing has gone well
so far and should be completed by next week, so that the end-to-end
testing can begin.



                               MEETINGS


The FOT attended the UARS Monthly Status review on 04 November 2003.

The  FOT  also attended an Eclipse PSR meeting on 04 November 2003  to
review  the status of all the changes made in the latest build (2.0.4)
of the software.

Also  the FOT attended a 3 TDRS transition meeting on 06 November 2003
in  order  to  hash out the details of how best to move  from  2  TDRS
systems  to  3  TDRS  systems  with the least  amount  of  operational
downtime.  Also discussed were methods to go back to 2 TDRS systems in
the event of an unforeseen problem with the 3 TDRS patch.




                       FUTURE SIGNIFICANT EVENTS

The  next  UARS Yaw slew is scheduled for 11 November 2003 (DOY  315).
This  maneuver will be a Reverse to Forward Flight maneuver  (Southern
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 07 November 2003

ORBIT   AOS        NO.      SUBSYS      REASON
-----   ---        ---      ------      ------
66502   310/2312   03-290   PEM (Z/H)   POWER OFF
66504   311/0313   03-291   PEM AXIS    POWER OFF
66517   311/2309   03-292   HALOE       POWER OFF



                              APPENDIX B
                  OUT-OF-LIMITS & ALERTS OCCURRENCES
                     Week ending 07 November 2003

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 07 November 2003

                     CLOCK DRIFT RATE ADJUSTMENTS

ORBIT          TIME                   CLOCK RATE CHANGE
-----          -----                  -----------------
-None this report period



                              APPENDIX D
                     UARS BATTERY PERFORMANCE DATA
                     Week ending 07 November 2003

     31 October 2003 - GMT Day 304 Beta = 42.7 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 -3.05/-4.63  +00.0/+00.0  07.2     0.000     0.0
2     +11.2/-50.4  +5.79/+4.50  +26.4/-15.2  24.6     1.050    20.5
3     +16.8/-67.2  +4.50/+3.23  +25.6/-15.2  24.5     1.040    20.0


     07 November 2003 - GMT Day 311 Beta = 14.4 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 -3.05/-4.63  +00.0/+00.0  07.2     0.000     0.0
2     +16.8/-78.4  +5.79/+4.82  +28.8/-14.4  24.2     1.020    21.2
3     +16.8/-100.8 +4.82/+3.87  +28.0/-14.4  24.0     1.020    21.0

     V/T LEVEL CHANGES
ORB#           AOS TIME   LVL FR-TO
-----          --------   ---------
None this report period


                              APPENDIX E
                         UARS ANOMALY REPORTS
                     Week ending 07 November 2003

                     NEW ANOMALY REPORTS GENERATED
AR NO.    SUBSYS    ORBIT     TIME      CDS       PROBLEM/DATA LOSS
------    ------    -----     ----      ---       -----------------
-None this report period.

                 ANOMALY CLOSURE INFORMATION RECEIVED
AR NO.    SUBSYS    ORBIT     TIME      CDS       PROBLEM/DATA LOSS
------    ------    -----     ----      ---       -----------------
03-050    FOT       See List  Oct 03    30832     Generic Late Acquisition

                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
------    ------    -----     ----      ---       -----------------
-None this report period.