ACE Weekly 02/10/06 - 02/16/06 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Type Attitude Date 02/16/06 DOY 047 2006 Thrusters 2R 4R+ 4R- Duration 8:24 min Start Time 17:40:13z Stop Time 17:48:37z Start HGA 4.90 deg Stop HGA 6.22 deg Firing 43 pulses The next attitude maneuver is scheduled for Wednesday 02/22/06. ============================================================================ OCRs: DOY 040 (02/10/06) 1639-1644z SIS-038 Four matrix detector strips were enabled recently (OCR-37) and their firmware threshold was not lowered right away so that we could monitor performance of the instrument. This change is a result of the performance evaluation. ============================================================================ 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 February/March. RIONet - String 3 is anticipated to move to the RIONet in February. The TDF firewall test with DSN has been rescheduled to Wednesday 2/22/06. Attitude Training - The FOT continues training on attitude determination, maneuver planning, and maneuver execution. ============================================================================ Extra Activities: DOY 041 (02/10/06) - String 3 was scanned in preparation for the move to the RIONET. There were 2 high level vulnerabilities that need to be address before moving to the RIONET. DOY 044 (02/13/06) - The MOC SLE machines were scanned in preparation for the move to the RIONET. There were no vulnerabilities found. DOY 044 (02/13/06) - Scrolled through all 30 telemetry section for SSR-B. No new errors were detected on the SSR. ============================================================================ Anomalies: DOY 043 (02/12/06) G06-0022 DSS-27 Incorrect Predicts DSS-27 station remotely reset antenna controller and re-downloaded predicts. DR G106530. IMPACTS: 4-minute delay to activities. DOY 044 (02/13/06) G04-0125 Data Server Connection lost (appended) After EOT, Command & Control lost connection to the Data Server. This is an intermittent error. A DR (CDSID #00021091) was submitted on 11/1/04 to document the problem. IMPACT: All commanding and data recovery had already completed for support. Cause of error message continues to be unknown. DOY 046 (02/15/06) G06-0023 DSS-27 Antenna Stow About 35 minutes into the pass DSS-27 had to stow the antenna due to high winds. DR G106540. IMPACT: Lost the remainder of the pass. 1 hour and 35 minutes of playback was not recovered until the next support. DOY 047 (02/16/06) G06-0024 Two Instances of TPOCC The FOT started the ROBOTT prepass activities at the same time the ROBOTT Real-time Monitor was starting the pass activites. This caused TPOCC to startup twice at the same time. All automation processes were killed and restarted individual by the FOT. IMPACT: No impact to the pass. All systems were functioning properly before the pass started. DOY 047 (02/16/06) G06-0025 Erroneous Message from C&C Command and Control sent out an erroneous message stating that telemetry was offline for 156 mins. This is due to a problem with C&C not realizing when telemetry resumes after a dropout, while in a manual paused state. This problem has been previously documented in DR CDSID 21190 on 04/25/05. IMPACT: FOT notified about a telemetry dropout that was not as long as the message states. DOY 047 (02/16/06) G06-0026 ROBOTT/C&C Froze ROBOTT froze after procedure S_OPS_PLBK_COMPLETE completed (EOT-5minutes). RTMON restart not performed since 5 minutes before End of Track. CDSID#00021192 IMPACT: Procedure G_ACEDOWN not executed, status reports not completed before TPOCC terminated.