ACE Weekly 09/01/2010 - 09/07/2010 All ACE spacecraft subsystems are performing nominally. ======================================================================== Orbit/Attitude: Type Attitude Date 09/07/2010 DOY 250 2010 Thrusters 2R 4R+ 4R- Duration 15:33 min Start 17:11:14z Stop 17:26:47z HGAStart -6.61deg HGAStop +7.75deg SunStart 9.89deg SunStop 7.88deg SpinStart 5.0473rpm SpinStop 5.0514rpm Nutation 0.23deg Firing 79 pulses FuelUsed 0.2478lbs FuelRemain 133.9156lbs FinalSCMass 1368.176lbs The next attitude maneuver is scheduled for Tuesday 09/28/2010. ======================================================================= OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 241-248 2010 ======================================================================== Anomalies: DOY 247 09/04/2010 S-ACE-0526 G10-0044 SLE CMDs Not Transmitted DSS-24 had successfully transmitted commands at the beginning of the pass (1430-1551z). After the playback was complete, the MMOC sent commands for redumps (1624z). The SLE CMD connection was ACTIVE, and the commands were reaching the station, but the commands were not being transmitted to the spacecraft. The FOT manually disconnected (STOP/UNBIND) and then reconnected (BIND/START) the SLE CMD connection. The commands were then successfully transmitted to the spacecraft. This problem may be related to the recent SLE problems SOHO has had. This problem last occurred for ACE on 03/01/2010 (AR#G10-0012) IMPACT: Manual intervention required. Commanding delayed 15 minutes. DOY 250 09/07/2010 S-ACE-0527 G10-0045 NOAA Data Forward Disconnect NOAA Space Weather rebooted their systems during the DSN pass. The MMOC's data forwarding process is automatically started at the beginning of each pass, but must be manually restarted if NOAA reboots their systems. This problem last occurred 03/01/2010 (AR#G10-0010). MOCR 217 has been submitted to email notification when the NOAA data forwarding has stopped. IMPACT: NOAA Space Weather did not receive data for 3 hours until the pass had finished (16:43-19:45z)