ACE Weekly 08/26/05 - 09/01/05 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: Type Attitude Date 08/31/05 DOY 243 2005 Thrusters 2R 4R+ 4R- Duration 11:23 min Start Time 16:49:50z Stop Time 17:01:13z Firing 58 pulses The next attitude maneuver is scheduled for Wednesday 09/07/05. ============================================================================ OCRs: None ============================================================================ Ongoing Activities: Scheduling - Joyce Ross (jmross@pop500.gsfc.nasa.gov) has joined the team as the ACE DSN scheduler. Space Link Extension (SLE) - The DSN/Developer test with DTF-21 was completed on Thursday 09/01/05. The entire test plan was completed including binding, commanding and unbinding. Several issues (both software and configuration) were uncovered by the testing. The next SLE telecon with DSN is scheduled for Tuesday 09/06/05 at 1pm. ============================================================================ Extra Activities: None ============================================================================ Anomalies: DOY 241 (08/29/05) ACE Anomaly G05-0109 Procedure Double Execution ROBOTT/C&C did not see that g_precal had completed successfully and re-executed the proc. The ROBOTT developer was notified and determined that the procedure had completed before results checking had determined that the procedure had started. DR pending. IMPACT: Minimal. FOT had written procedure so there is no impact for duplicate execution. DOY 242 (08/30/05) ACE Anomaly S05-0035 S3DPU Limit Violations S3DPU_CONV_SEC_I had 1 brief red high limit violation (>440mA). SSDIDLECTR was 29-31. Mark Popecki notified. 2005-242 20:36:03 - 20:36:35z 451 - 494mA IMPACT: S3DPU is expected to use more current during increased activity.