ACE Weekly 09/15/06 - 09/21/06

All ACE spacecraft subsystems are performing nominally.

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Orbit/Attitude:

Type        Attitude       SK-41          
Date        09/19/2006     09/19/2006     
DOY         262 2006       262 2006       
Thrusters   2R 4R- 4R+     1A 2A          
Duration    11:10 min      7.727 sec      
Start       15:52:49z      17:15:28z      
Stop        16:03:59z      17:15:36z      
StartHGA    -5.17 deg      6.87 deg                        
StopHGA      6.87 deg      6.87 deg                       
Firing      56 pulses      Continuous     
FinalSCMass 1395.242lbs    1395.213lbs               

The next attitude maneuver is scheduled for Monday, 10/02/06.

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OCRs:

None

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Ongoing Activities:

Attitude Training - The OE's will begin training the remainder of the FOT on
attitude determination beginning September 11.

RIONET - The transition to the RIONET on String 3 will tentatively occur
around mid-September.  

Space Link Extension (SLE) - ACE SLE version 2.1 was delivered to the
Library on April 28, 2006.  The delivery to the ACE MOC will not occur until
after the MOC is converted to the RIONET.

Multi-Mission MOC - The FOT has begun supporting the effort to determine the
feasibility of transferring to a multi-mission MOC.

Automation - Development for the next ROBOTT automation release is ongoing
on String 3 and the ACEDDS.  The ROBOTT SPS release was delivered September
14.

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Extra Activities:

DOY 263 (09/20/06) - Scrolled through all 30 telemetry section for SSR-A.
No new errors were detected on the SSR.

DOY 264 (09/21/06) - Scrolled through all 30 telemetry section for SSR-B.
No new errors were detected on the SSR.

On DOY 269 (09/26/06), there will be no ACE pass for the day.  All data will
be recovered the following day.

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Anomalies:

DOY 258 (09/15/06)  S-ACE-0007 (G06-0087)  Excessive Network Hits (DSS-66)
Postpass analysis revealed intermittent network hits during the pass with
DSS-66 (0.32% data loss).  DR N103882.
IMPACT:  None.  All data was recoverable from the CDR.

DOY 262 (09/19/06)  S-ACE-0008 (G06-0088) Unable to Perform cdmount on
string 3 cd drive
The FOT and Sys Admins were unable to mount cd from ac3ws1 to the cd drive
on string 3.
IMPACT:  Cannot use the CD drive on String 3.

DOY 263 (09/20/06)  S-ACE-0009 (G06-0089) Pages not received by Honeywell
Mail
Honeywell email has not been delivering all ROBOTT notifications.
Notifications are successfully received by archwireless.net, skytel.com and
gsfc.nasa.gov accounts.  HTSI helpdesk case number 121476.
IMPACT:  Not all real-time operational notifications are being received by
Honeywell email.

DOY 263 (09/20/06)  S-ACE-0010 (G06-0090) Incorrect Cmd Mod Index (D66)
The FOT noticed commands being retransmitted to the s/c during the initial
commanding sequence. The FOT informed D66 that the command modulation index
was incorrect. D66 re-entered the correct value and commands were
successfully received by the s/c. DR M103853.
IMPACT:  The first command was retransmitted multiple times.  All command
were received by the spacecraft.