ACE Weekly 09/22/2010 - 09/28/2010 All ACE spacecraft subsystems are performing nominally. ======================================================================== Orbit/Attitude: Type Attitude Date 09/28/2010 DOY 271 2010 Thrusters 2R 4R+ 4R- Duration 14:45 min Start 14:27:27z Stop 14:42:12z HGAStart -6.61deg HGAStop +7.85deg SunStart 15.85deg SunStop 5.68deg SpinStart 5.0511rpm SpinStop 5.0548rpm Nutation 0.21deg Firing 75 pulses FuelUsed 0.2362lbs FuelRemain 133.6792lbs FinalSCMass 1367.939lbs The next attitude maneuver is scheduled for Friday 10/15/2010. ======================================================================= OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 262-269 2010 File transfer from DSN's Central Data Recorder to the MMOC is now successful. Work continues to route the file transfer via non-operational networks as requested by NISN. ======================================================================== Anomalies: DOY 265 09/22/2010 S-ACE-0533 G10-0050 MMOC Power Outage GSFC Bldg 3/14 experienced a 3.5-4 hour power outage due to lightning (DOY 265 2358z - DOY 266 0330z and intermittent power until ~0400z). The UPS provided power to the MMOC (Multi-Mission Ops Center) during this time; UPS availability was extended with the intermittent power in the last 30 minutes. No ACE or WIND passes were scheduled during this time; the next pass was with ACE on DOY 266 at 1315z. The operational computer for ACE & WIND (mmocops1p) was still running but unable to unlock the screensaver. This may have been due to power transients or the fact that the operations network was also significantly impacted by the power outage. Of the 10 RIONet computers in the MMOC, 7 were unable to unlock the screen saver. All 6 of the RIONet computers in the MITF (Mission Integration and Test Facility) were not impacted and were running without problems. The IONet mailserver used for forwarding email notifications from the MMOC systems was down until DOY 266 1800z. IMPACT: The 7 computers (including the operational computer) in the MMOC that were unable to unlock the screensaver were rebooted. The MMOC software (ITOS, etc) was restarted before the beginning of the next ACE pass. The FOT monitored the ACE pass to ensure everything was functioning properly. Note, the impact would be minimal if the daily ACE pass had been lost; recorder playback would have been caught up over the next couple of days. DOY 266 09/23/2010 S-ACE-0534 G10-0051 DSS-27 Antenna Stop DSS-27 antenna stopped (1723z) when a circuit breaker was tripped during G91 demolition work at the DSN Goldstone site. Power to the antenna and tracking were restored within 30 minutes (1752z). The FOT disconnected and reconnected SLE CMD to ensure no problems when commanding was to be performed at 1838z IMPACT: SSR redumps performed on the following pass. No realtime data to NOAA SWPC for 30 minutes. Manual intervention needed for reconnecting SLE CMD.