ACE Weekly 03/31/06 - 04/06/06 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Type Attitude Attitude Station Keeping #39 Date 04/05/06 04/05/06 04/05/06 DOY 095 2006 095 2006 095 2006 Thrusters 2R 4R+ 4R- 2R 4R+ 4R- 1A 2A Duration 08:03 min 05:20 min 22 sec Start Time 15:22:06z 16:33:29z 17:45:05z Stop Time 15:30:09z 16:38:49z 17:45:27z Start HGA -6.01 deg 3.09 deg Stop HGA 3.09 deg 6.10 deg Firing 41 pulses 28 pulses Continuous The next attitude maneuver is scheduled for Friday 04/21/06. ============================================================================ OCRs: None ============================================================================ Ongoing Activities: Space Link Extension (SLE) - The first version of ACE SLE was delivered to the Library on December 14. The delivery to the ACE MOC will not be until after String 3 is converted to the RIONET. RIONet - String 3 conversion to the RIONet is on hold based on NASCOM's schedule. Attitude Training - The FOT continues training on attitude determination, maneuver planning, and maneuver execution. ============================================================================ Extra Activities: None ============================================================================ Anomalies: DOY 091 (04/01/06) G05-0048 Erroneous Pass Change Message - Appended ROBOTT populates the 'passparm' file with duplicate view information when the next DOY or current DOY corresponds to 092. 092 is the spacecraft ID, which is one of the fields in the view file. CDSID 21179 IMPACT: No impact to scheduled activities. This will occur every year on DOY 091 and 092. DOY 096 (04/06/06) G06-0036 Fanout Connection Lost IPNOC reset the fanout connection after their regular software maintenance. The reset occurred during a command period, so one command had to be retransmitted to the spacecraft. Command Echo blocks were not received at the MOC after the reset. IMPACT: One command retransmission. No Echo blocks for the remainder of the pass.