ACE Weekly 06/23/06 - 06/29/06 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Type Attitude Date 06/26/2006 DOY 177 2006 Thrusters 2R 4R+ 4R- Duration 9:51 min Start Time 15:53:59z Stop Time 16:03:50z Start HGA -4.16 deg Stop HGA 6.50 deg Firing 50 pulses Final SC Mass 1397.128 lbs Type Station Keeping-40 Date 06/26/2006 DOY 177 2006 Thrusters 3A 4A Duration 41.156 sec Start Time 17:50:19z Stop Time 17:51:00z Firing continuous Final SC Mass 1396.9758 lbs The next attitude maneuver is scheduled for Thursday, 07/06/06. ============================================================================ 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 07/01/06. 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: Due to the maneuver on Monday 06/26/06, there was not enough time to perform the weekly SWEPAM calibrations. The calibrations were completed on Tuesday instead. ============================================================================ Anomalies: DOY 177 (06/26/06) G06-0067 - String 1 Tape Drive The tape drive on string 1 has been taking twice as long to read the tapes for the last few weeks. The Sys Admin's replaced the tape drive on Wednesday 06/28/06. IMPACT: Weekly archiving completed, but took longer than expected. DOY 178 (06/27/06) G06-0068 - Telemetry Outages Due to network problems, there were 3 brief telemetry outages from 17:42 to 17:55. DR N103760. IMPACT: All data was recoverable from the recorders. DOY 180 (06/29/06) G06-0069 - AC1XT1 Malfunction After the tape drive replacement, the Sys Admin's could not log in to AC1XT1. Currently there is no replacement for the xterm. IMPACT: None. The FOT does not use AC1XT1 for operations.