ACE Weekly 06/09/2010 - 06/15/2010 All ACE spacecraft subsystems are performing nominally. ======================================================================== Orbit/Attitude: Type Attitude Date 06/11/2010 DOY 162 2010 Thrusters 2R 4R+ 4R- Duration 15:08 min Start 14:05:05z Stop 14:20:13z HGAStart -6.28deg HGAStop +7.46deg SunStart 6.89deg SunStop 11.46deg SpinStart 5.0521rpm SpinStop 5.0560rpm Nutation 0.11deg Firing 77 pulses FuelUsed 0.2419lbs FuelRemain 135.6448lbs FinalSCMass 1369.905lbs The next attitude maneuver is scheduled for Tuesday 06/22/2010. ======================================================================= OCRs: None ======================================================================== Activities: Data Capture: 100% DOY 157-164 2010 ======================================================================== Anomalies: DOY 162 06/11/2010 S-ACE-0512 G10-0031 ITOS tm_controller ITOS was unable to process telemetry due to a "timeout reading from tm_controller". ITOS was restarted before beginning of track. This problem occurs approximately once every 2 weeks. DR CDSID#00027515 has been submitted and the ITOS developers expect this to be fixed in ITOS 805. IMPACT: Manual intervention required. No delay in activities. NOTE: ITOS had provided beta version ITOS 804-7 for review. Minimal testing has been performed, but it has been found that ITOS 804-7 is not populating telemetry parameters with multiple source fields (the majority of parameters for ACE and WIND). With the limited resources, finding time to test a new version of ITOS will be difficult. DOY 163 06/12/2010 S-ACE-0513 G10-0032 NOAA Unable To Process TLM At 2032z, NOAA Space Weather Prediction Center (SWPC) called the FOT and informed that they were unable to process ACE telemetry from either antenna at DLR (Germany) and WCDA (Wallops Virginia) since 1905z. The FOT went to MMOC and found no problems with the previous pass. The FOT requested time with DSS-24 (available 2105-2140z) to verify that the spacecraft was ok. DSS-24 provided telemetry from 2114-2121z. There were no problems with the spacecraft. At 2149z, NOAA was able to process telemetry after discovering a full disk partition on their system. IMPACT: Given the downlink format problem on 11/24/2009 (AR#S09-0009), the FOT followed prudence and checked the spacecraft after receiving the call from NOAA. Note, the cause of the problems is different than the previous instance of NOAA unable to process telemetry (04/18/2010, AR#G10-0021). DOY 166 06/12/2010 S-ACE-0514 G10-0033 DSN/Madrid Power Failure DSN's Madrid Complex experienced a power failure. DSS-65 stopped tracking with 37 minutes left in the pass. Telemetry was restored with 5 minutes left in the pass. Uplink was not re-established IMPACT: No data forwarding to NOAA during the TLM outage. NOAA was able to track after the spacecraft automatically switched to the RTSW format. SSR playback had already completed.