ACE Weekly 06/02/06 - 06/08/06

All ACE spacecraft subsystems are performing nominally.

============================================================================
Orbit/Attitude:

	Type         Attitude  	
	Date         06/07/06  	
	DOY          158 2006  	
	Thrusters    2R 4R+ 4R-	
	Duration     10:39 min	
	Start Time   15:03:29z	
	Stop Time    15:15:44z	
	Start HGA    -5.42 deg		
	Stop HGA     6.20 deg 		
	Firing       54 pulses	
	
	Start Sun Angle  13.52 deg
	Stop Sun Angle   3.90 deg*

This attitude maneuver violated the 4 degree sun angle contraint.  See below
for more details.

The next attitude maneuver is scheduled for Tuesday, 06/20/06.

============================================================================
OCRs:

None

============================================================================
Ongoing Activities:

Attitude Training - The FOT continues training on attitude determination,
maneuver planning, and maneuver execution.  The transition date is
tentatively scheduled for 06/16/06.

RIONET - A licensing issue with the firewalls needs to be resolved before
the MOC can be transitioned.  

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 String 3 is converted to the RIONET.

============================================================================
Extra Activities:

None

============================================================================
Anomalies:

DOY 156 (06/05/06)  G06-0060  DSS-66 - Incorrect Command Mod Index 
DSS-66 had the command mod index incorrectly set at 8.13 dB vice 1.69 dB.
When DSS-66 reset the command mod index, it became 19.7 dB.  DR N103709.
IMPACT: All commands made it to the spacecraft.  

DOY 156 (06/05/06)  G06-0061  FTP Connection to ACE DDS Timed Out
The ftp connection to the ACE DDS failed around the beginning of the pass.
The connection was re-established a short time later.
IMPACT: One automation notification was sent out through the back up XTEDDS.

DOY 158 (06/07/06)  S06-0009  Sun Constraint Violation
The Sun Angle violated the 4 degree constraint after the attitude maneuver.
According to the post-maneuver attitude, the sun angle was 3.9 degrees
around 15:55.  The Sun Angle fluctuated in and out of the yellow low limit
throughout the rest of the pass because the spacecraft nutation was around
0.35 degrees.  By the end of the pass at 17:45 the sun angle had increased
to 4.1 degrees.  
IMPACT: None.  Spin Rate within constraints.  The small sun angle did not
impact the generation of the sun pulse.  The ACE Science Center was notified
of violation.

DOY 159 (06/08/06)  G06-0062  ROBOTT - C&C Color Allocation
TAPS displays were remotely brought up on AC1WS3 and not closed before the
next pass.  These displays take up color and do not leave enough colors to
be allocated to C&C.  The problem was noticed by the FOT as C&C was being
initialized and the necessary windows on WS3 were killed.
IMPACT: None.  If the problem had not been caught, the RTMON would have
eventually failed over the operations to the backup string.

DOY 159 (06/08/06)  G06-0063  CNE N/W Connectivity Unavailable
The FOT is unable to ftp to and from the ACEDDS.  There is a new firewall on
the open IONET and the sys admins have submitted a gateway request for this.

IMPACT: Cannot ftp products to and from the ACEDDS until the gateway request
is implemented.