ACE Weekly 11/03/2006 - 11/09/2006 All ACE spacecraft subsystems are performing nominally. ============================================================================ Orbit/Attitude: No attitude maneuvers were completed this week. The next attitude maneuver is scheduled for Friday, 11/17/2006. ============================================================================ OCRs: DOY 311 (11/07/2006) 1400-2000z GND-173 The annual contingency exercise requirement was performed to ensure that the ground system can be restored from backup and able to successfully command to the spacecraft. The following drives were restored from backup and a NO_OP command was sent. root Unix OS Mission Mission software Support_Tools Mission software Flight_Ops Mission configuration DOY 313 (11/09/2006) 1930-2100z GND-174 The official TPOCC r5.3 delivery was installed on String 3. DR and Regression testing will be performed before installation on Strings 1 and 2. Operations will then transition to TPOCC r5.3 The Sepica team is reviewing power-cycling Sepica to induce a gas valve to open. An OCR is pending from the team. ============================================================================ Ongoing Activities: Automation - The ROBOTT SPS release will need to be patched to provide the SPS password in the SOAP request. DSN recently upgraded to SPS V1.0.5b which requires this password. The ROBOTT patch will be required before DSN transitions to SPS. DSN has currently scheduled their DDR for 11/20/2006 and the elimination of the current NSS server for 11/27/2006. RIONET - A goal to transition to the RIONET on String 3 has been targeted for the end of November to beat the next shuttle freeze. Space Link Extension (SLE) - ACE SLE version 2.1 was delivered to the Library on April 28, 2006. Installation in the ACE MOC will not occur until after the MOC is converted to the RIONET. ============================================================================ Extra Activities: DOY 310 (11/06/2006) - SSR A Telemetry Sections downlinked. No new Single Bit Errors (correctable) found. No non-correctable errors (Hard Single Bit Errors & Double Bit Errors) have occurred throughout the mission. DOY 311 (11/07/2006) - SSR B Telemetry Sections downlinked. Single Bit Error Count (SBE_CT_B) increased from 858 to 2118 since last checked on 09/21/2006 (Reference AR S06-0011). No non-correctable errors (Hard Single Bit Errors & Double Bit Errors) have occurred throughout the mission. DOY 311 (11/07/2006) - String 3 security scan performed. DOY 313 (11/09/2006) - There was no impact from the NTR Transition and Interface Testing on JPL to STGT Closed IOnet (15:45-17:00z). DSN's available time continues to be limited. SSR playback is increasingly not completed until subsequent supports. While trying to catch up, no redumps of data gaps is performed. Data loss has been minor (<1%). ============================================================================ Anomalies: DOY 311 (11/07/2006) S-ACE-0080 (S06-0011) - Increase in SBE_CT_B SSR B Single Bit Error Count (SBE_CT_B) increased from 858 to 2118 since last checked on 09/21/2006. Single Bit Errors are automatically corrected by the SSR. There have only been 4 increases in SBE_CT_B from the monthly check of SSR housekeeping data. However, the number of errors has been roughly doubling each year (based on the limited number of occurrences). The following table gives a history of the Single Bit Error count for SSR A and SSR B IMPACT: Minimal. Single Bit Errors are automatically corrected by the SSR and occur very infrequently. SBE_CT_A SBE_CT_B 12/01/1999 15 09/06/2003 286 02/25/2003 30 09/22/2004 608 06/05/2003 270 11/15/2004 858 11/07/2006 2118 DOY 312 (11/08/2006) S-ACE-0093 (G06-0103) - AC3FE1A Monitor The AC3FE1A monitor failed. Hardware maintance replaced the monitor. IMPACT: Minimal. The workstation display is on String 3.