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Daily 3649
HUBBLE SPACE TELESCOPE
DAILY REPORT # 3649 PERIOD COVERED: DOY 189 OBSERVATIONS SCHEDULED - No programs executed due to safemode entry. Intercept Science SMS expected @ 190/22:00Z. FLIGHT OPERATIONS SUMMARY: Significant Spacecraft Anomalies: (The following are preliminary reports of potential non-nominal performance that will be investigated.) HSTAR 9472: Main Baffle 6 Temperature (EMNBF6T) flagged OOL red high at -13.987 °C for one sample @ 189/09:28:35Z. Back in bounds @ 189/09:29:05Z. Under investigation. COMPLETED OPS REQs: 17215-3 - ZGSP Recovery - Rate Gyro Reconfiguration @ 189/1455z 17216-0 - ZGSP Recovery - Coarse Attitude Determination @ 189/1537z FRS SAC Special Request # 3; ARU U/L @ 189/1620z 17213-0 - Open +DD SPA Trim Relay @ 189/1752z 17220-0 - Enable Magnetic Field Model Preview Mode @ 189/1755z 17219-1 - Clear SI (ACS & STIS) Engineering Data Reports @ 189/1757z 17222-0 - Fine Attitude Determination & Bias Calculation @ 189/1906z 17222-0 - Fine Attitude Determination & Bias Calculation @ 189/2228z 17222-0 - Fine Attitude Determination & Bias Calculation @ 190/0011z FRS Gyro Calibration Request # 72; LB Bias U/L @ 190/0143z 17222-0 - Fine Attitude Determination & Bias Calculation @ 190/0200z 17223-0 - Uplink N02Z5260C and set ATP pointer.@ 190/0229z FRS SAC Special Request # 8; ARU/PRT U/L @ 190/0302z 17222-0 - Fine Attitude Determination & Bias Calculation @ 190/0322z 17218-2 - ZGSP Recovery Procedure @ 190/0343z OPS NOTES EXECUTED: None SCHEDULED SUCCESSFUL FAILURE TIMES FGS GSacq 0 0 FGS REacq 0 0 FHST Update 0 0 LOSS of LOCK SIGNIFICANT EVENTS: Executing Health and Safety (H&S)/Science Instrument (SI) Recovery SMS SB190O00 (190/04:00Z - 190/22:00Z) Recovery from Zero Gyro Sun Point (ZGSP) Safemode commenced @ 189/14:41Z (OR 17218-2 with attached, red-lined Recovery from Zero Gyro Procedure 7A). Transition from ZGSP to Software Sun Point occurred @ 189/15:37Z. Aperture Door was opened @ 189/16:41Z. Intercepted H&S load @ 190/04:00Z. Started SI recovery @ 190/07:00Z. ZGSP recovery complete @ 190/03:43Z. Intercept Science SMS expected @ 190/22:00Z. Loaded RGA Scale Factor/Alignment and Gyro Bias Offset Tables (69 and 156) @ 189/14:55Z (OR 17215-3 with COP 3.48a, Section D, Steps D1 - D5, D7, and D9 and ROP DF-1A). Dumped and compared Table 69 and 156. No miscompares or missing data. Performed ZGSP Recovery Coarse Attitude Determination @ 189/15:37Z (OR 17216 with COP 3.46). Opened +DD SPA Trim Relay @ 189/17:52Z (OR 17213 with COP 4.22). Enabled Magnetic Field Model Preview Mode @ 189/17:55Z (OR 17220 with COP 3.53) Fine Attitude Determination and Bias Calculation @ 189/19:06Z, 189/22:28Z, 190/00:11Z, 02:00Z, and 03:22Z (OR 17222). Uplinked N02Z5260C and set ATP Pointer @ 190/02:29Z (OR 17223). Cleared ACS and STIS Engineering Data Reports (MSAFINT1, MSAFINT3) @ 189/17:57Z (OR 17219 with ROP NS-05). These reports were both set upon ACS and STIS entry into safemode when vehicle entered ZGSP. Reports need to be cleared prior to the start of SI recoveries in the H&S SMS. |
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