Date |
Time |
Component |
Description |
|
03/20/2013 | 17:22:25 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 20 seconds. Performed 4 thruster firings of 10 seconds. |
|
03/20/2013 | 15:42:00 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 10 seconds. Performed 2 thruster firings of 10 seconds. |
|
03/15/2013 | 17:41:26 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 20 seconds. Performed 1 thruster firing of 20 seconds. |
|
03/15/2013 | 16:00:29 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 10 seconds. Performed 2 thruster firings of 10 seconds. |
|
03/15/2013 | 12:45:21 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 5 seconds. Performed 2 thruster firings of 5 seconds. |
|
03/15/2013 | 12:41:55 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 2 seconds. Performed 3 thruster firings of 2 seconds. |
|
03/14/2013 | 19:45:12 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 5 seconds. Performed 3 thruster firings of 5 seconds. |
|
03/14/2013 | 16:23:44 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 5 seconds. Performed 4 thruster firings of 5 seconds. |
|
03/14/2013 | 14:39:18 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 5 seconds. Performed one thruster firings of 5 seconds. |
|
03/14/2013 | 13:08:08 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 5 seconds. Performed two thruster firings of 5 seconds. |
|
03/13/2013 | 18:28:40 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 2 seconds. Performed four thruster firings of 2 seconds. |
|
03/13/2013 | 16:47:36 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 2 seconds. Performed four thruster firings of 2 seconds. |
|
03/13/2013 | 15:04:48 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 2 seconds. Performed two thruster firings of 2 seconds. |
|
03/13/2013 | 13:30:34 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 2 seconds. Performed two thruster firings of 2 seconds. |
|
03/12/2013 | 18:52:08 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 1.5 seconds. Performed two thruster firings of 1.5 seconds. |
|
03/12/2013 | 15:29:35 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 1 second. Performed three thruster firings of 1 second. |
|
03/11/2013 | 17:34:52 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 1 second. |
|
03/11/2013 | 17:34:52 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 1 second. Performed three thruster firings of 1 second. |
|
03/11/2013 | 15:54:41 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 1 second. |
|
03/11/2013 | 15:54:41 | | Configure spacecraft for firing roll/yaw thrusters (5-8) for 1 second. Performed two thruster firings of 1 second. |
|
03/07/2013 | 15:44:45 | | Restart macros that activates Macro 1B for yaw bias clear |
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03/07/2013 | 15:42:11 | | End GYROLESS test |
|
02/26/2013 | 15:57:08 | | Start GYROLESS test |
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01/10/2013 | 21:13:16 | | Configure spacecraft for manual thruster firing: 5678 (thrust neutral firing for 1 second) |
|
01/10/2013 | 17:56:11 | | Configure spacecraft for thruster firing: 5678 (thrust neutral firing for 0.5 second) |
|
01/10/2013 | 17:51:51 | | Configure spacecraft for thruster firing: 5678 (thrust neutral firing for 0.5 second) |
|
01/10/2013 | 14:32:44 | | Configure spacecraft for manual thruster firing: 6 & 8 (thrust neutral firing for 0.1 second) |
|
01/10/2013 | 13:04:26 | | Configure spacecraft for manual thruster firing: 6 & 8 (thrust neutral firing for 0.1 second) |
|
01/10/2013 | 13:00:08 | | Configure spacecraft for manual thruster firing: 5 & 7 (thrust neutral firing for 0.1 second) |
|
07/25/2012 | 13:02:39 | GYRO 2 | Loss of 3 axes gyro control. Remaining Gyro 1 provides roll and pitch rate and ACS now uses the roll rate to estimate yaw error and yaw rate. ACS mode is now in RGYO estimate yaw. |
|
07/25/2012 | 13:02:39 | | Inhibit IMU switching; Reduced gyro mode to 2; |
|
07/25/2012 | 12:59:14 | | Disable Thrusters |
|
07/24/2012 | 16:38:15 | | Pitch Wheel Bias set to 2500 RPM to enhance RGYRO performance (Control SCP) |
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07/24/2012 | 16:37:20 | | Pitch Wheel Bias set to 2500 RPM to enhance RGYRO performance (Non-Control SCP) |
|
11/11/2008 | 09:50:00 | | Clears gyro consistency flags. |
|
11/04/2008 | 22:51:00 | | Clears gyro consistency flags. |
|
11/04/2008 | 19:26:30 | | On Tuesday (Nov 8, 2008) afternoon the AET called observed a Z axis gyro consistency miscompare. Investigation revealed that the consistency flag was set when SADBIAS slewed the solar array. |
|
07/17/2007 | 18:53:00 | | There was large (.74deg) pitch error. It was quickly damped out by the wheels. The total spacecraft momentum changed from 30 to 15 lb/sq in. The spacecraft recovered in ~3-4 minutes. |
|
04/05/2006 | 22:30:00 | GYRO 2 | Small phase shift in gyro 2. Current (drop of 2 mA) accompanied by increase in TCA voltage, which is unexpected. Returned to previous equilibrium 48 hours later accompanied by a drop in TCA voltage (also unexpected). |
|
04/05/2006 | 22:29:00 | GYRO 1 | Small phase shift in gyro 1. Current (drop of 2 mA) accompanied by increase in TCA voltage, which is unexpected. Returned to previous equilibrium 48 hours later accompanied by a drop in TCA voltage (also unexpected). |
|
02/16/2006 | 19:23:00 | | Change N2 gas unloading trigger on pitch axis momentum to 45 in/lb/sec (from 40) absolute. Control side. |
|
02/16/2006 | 19:21:00 | | Change N2 gas unloading trigger for pitch axis momentum to 45 in/lb/sec (from 40) absolute. |
|
12/16/2005 | 18:02:00 | | Change configuration to monitor thruster telemetry |
|
12/16/2005 | 18:01:00 | | Enable N2 thrusters to enhance spacecraft recovery response to additional potential attitude perturbations caused by possible hydrazine thruster leakage. |
|
12/16/2005 | 12:00:00 | | Spacecraft attitude perturbations now thought to be caused by leaky or anomalous hydrazine thruster components (REA #2 for the first incident on J324 and REA #4 for the incident on J342). |
|
12/08/2005 | 01:21:00 | | Spacecraft attitude perturbation along X (yaw) and Y (roll) axis' with momentum reversals in each axis. Similar to previous perturbation (collision) on 20 Nov but of significantly less magnitude (yaw error of approx 0.9 deg vs previous 10 degs) and affecting roll axis this time vs pitch the previous time with no autonomous hardware swaps. Errors damped out quickly and nominal attitude restored. |
|
11/20/2005 | 16:24:00 | | Select primary RY coil (#1) Deselect backup coil (#2) |
|
11/14/2005 | 10:31:00 | RYTC 1A | Roll-Yaw coil #1 autonomously swapped to #2 after excess momentum remained following an unloading. Significant increase in RWheel speeds and temps and momentum on all 3 axis. Suspect Leonid meteorite strike. Nominal attitude regained 15 minutes later. |
|
06/16/2005 | 07:52:45 | GYRO 2 | Gyro-2 spin motor current surged 10 mAmps then stabilzed at this new higher level. No obvious lasting impact to other attitude control components or values. |
|
06/10/2004 | 15:40:00 | GYRO 3 | Power off Gyro-3 permanently. Place RGyro Mode to MONITOR. |
|
06/09/2004 | 12:00:01 | GYRO 3 | Downgrade color status to YELLOW because of continued degradation of Gyro-3. |
|
03/25/2004 | 14:50:00 | | Change gyro channel selection assignments to
Gyro#1: Y axis (Roll) Channel-A, Gyro#2: X axis (Yaw) Channel-A and Z axis (Pitch) Channel-B. Deselect Gyro #3. |
|
03/15/2004 | 12:00:01 | GYRO 3 | Trend towards excessive yaw updates (up to 0.4 deg) detected since mid Feb 04. Possible gyro-3 problem. Under investigation. |
|
06/02/2003 | 20:02:00 | RWA X | Turnon power to X Reaction Wheel |
|
06/02/2003 | 20:02:00 | RWA S | Turn OFF power to Skew wheel |
|
06/01/2003 | 20:24:00 | | Command spacecraft back to normal attitude mode |
|
06/01/2003 | 15:03:58 | RWA X | Autonomous switch to S wheel from X wheel. |
|
05/30/2003 | 14:34:00 | | Command spacecraft attitude to YGC mode. |
|
06/28/2002 | 12:26:00 | | ADACS to normal mode (from YGC) |
|
06/24/2002 | 18:56:00 | ESA | On Orbit |
|
06/24/2002 | 18:56:00 | GYRO 1 | On Orbit |
|
06/24/2002 | 18:56:00 | GYRO 2 | On Orbit |
|
06/24/2002 | 18:56:00 | GYRO 3 | On Orbit |
|
06/24/2002 | 18:56:00 | IMU | On Orbit |
|
06/24/2002 | 18:56:00 | PTC 1A | On Orbit |
|
06/24/2002 | 18:56:00 | PTC 1B | On Orbit |
|
06/24/2002 | 18:56:00 | PTC 2B | On Orbit |
|
06/24/2002 | 18:56:00 | PTC 2A | On Orbit |
|
06/24/2002 | 18:56:00 | RWA S | On Orbit |
|
06/24/2002 | 18:56:00 | RWA X | On Orbit |
|
06/24/2002 | 18:56:00 | RWA Y | On Orbit |
|
06/24/2002 | 18:56:00 | RWA Z | On Orbit |
|
06/24/2002 | 18:56:00 | RYTC 1A | On Orbit |
|
06/24/2002 | 18:56:00 | RYTC 1B | On Orbit |
|
06/24/2002 | 18:56:00 | RYTC 2A | On Orbit |
|
06/24/2002 | 18:56:00 | RYTC 2B | On Orbit |
|
06/24/2002 | 18:56:00 | SSA | On Orbit |