ACE Weekly 02/14/03 - 02/20/03

All ACE spacecraft subsystems are performing nominally. An attitude and 
station-keeping maneuver was performed on 02/14/03 successfully. The next 
attitude maneuver is scheduled for 02/24/03.

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OCRs Executed:

NONE

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Ongoing Activities:

TAPS:
Trending, Analysis and Plotting System (TAPS) development continues. 
Testing is progressing on TAPS#2. TAPS#1 is still under control of the 
development team.

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Automation (ROBOTT):
Moving of the Offline subsystem has been delayed pending approval of 
updated offline activities and testing of those activities. The release of 
the Command & Control subsystem has been delayed until completion of 
WIND/POLAR automation task, new release date is TBD.
HSM is currently being tested by the FOT on string 3. HSM has been working 
well except for a few random problems that need to be addressed. It will go 
through several iterations before being moved to string 2. Once any piece 
of the ROBOTT software is moved to string 2, it will referred to as an 
'engineering' version and any problems will be documented via CDS.

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HGA Angle Constraint Report:

Will be released soon.

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Anomalies:

DOY 03046 (02/15/2003) - ACE Anomaly Report #S03-0005 TANK_B1_T Yellow Low 
Limit Violation
At 14:53:48, the mnemonic TANK_B1_T violated the yellow low limit of 10, 
with a value of 9.6472.
At 14:53:53, the mnemonic TANK_B1_T returned to within limits.  This has 
happened before.  Reference AR S02-0024.  The FOT is still investigating 
this.  It does not look like a temperature fluctuation, but more like 
something with the temperature sensor.  IMPACT:  None at this time.

DOY 03047 (02/16/2003) - ACE Anomaly Report #S03-0006 Temperature YL Limit 
Violations
Mnemonics INT_LINES_A_T, TANK_A2_T, TANK_B1_T,  INT_LINES_A_T violated 
their yellow low limits.  All mnemonics returned to within nominal limits 
seconds later. This has happened before.  Reference AR S02-0024.  The FOT 
is still investigating this.  It does not look like a temperature 
fluctuation, but more like something with the temperature 
sensor.  IMPACT:  None at this time.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Glen A. Miller
Honeywell Technology Solutions Inc.

ACE Flight Operations Team
Goddard Space Flight Center
Building 14, Room W10A
Mail Stop 428.2
Greenbelt, MD 20771

Office: 301-286-7071
Pager: 800-425-3174
Fax:    301-286-1729
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