ACE Weekly 10/11/02 - 10/17/02

All ACE spacecraft subsystems are performing nominally. A "dog-leg" 
attitude maneuver was executed this week with no problems to report. The 
next attitude maneuver is scheduled for 10/21/02.

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OCRs Executed:

NONE

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Ongoing Activities:

The HGA Angle Constraint Report is being reviewed and will be released in 
the near future.

Two 26M demo tests with DSN were performed this week.  Only minor problems 
were noted and analysis is ongoing.

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Anomalies:

Day 02284 (10/11/2002) ACE Anomaly #G02-0117 GDS(DSS-16) Exciter/MPA Problem
Exciter and Metric Pointing Assembly (MPA) problems delayed commanding 
approximately 51 minutes and forced the FOT to request a station change 
from GDS(DSS-16) to GDS(DSS-27). IMPACT:  None. GDS(DSS-27) was able to 
support for the full 3.5 hour pass and the "dog-leg" maneuver was executed 
with no problems.  DR#G101689

DOY 02287 (10/14/2002) ACE Anomaly #G02-0118 GDS(DSS-27) Exciter Problem
GDS(DSS-27) tried to bring carrier up but had problems locking onto the 
spacecraft receivers.  Carrier finally brought up 50 minutes after the 
scheduled BOT.  GDS(DSS-27) reported problems with the exciter which 
ultimately caused the delay in carrier up.  IMPACT: None.  All data was 
recovered.  DR#G101706





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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
Fax:    301-286-1729
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~