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pm1weekly_2002-145_2002-151

Mission Operations Days: 2002/145 to 2002/151
May 25, 2002 00:00:00 GMT to May 31, 2002 00:00:00 GMT

Aqua Spacecraft and MODIS Instrument Status:

PM-1 "Aqua" is in Fine Pointing Standby Mode
FM1 MODIS is Outgassing in B-Side Standby Mode
Component State(s) Comment
Blackbody A Off; B Off Standby Mode (with Outgas)
Calibration Electronics A Off; B Off Standby Mode (with Outgas)
Control Processor A Off; B On Standby Mode (with Outgas)
Nadir Door Unlatched, Closed Standby Mode (with Outgas)
Space View Door Unlatched, Open Standby Mode (with Outgas)
Solar Diffuser Door Unlatched, Closed Standby Mode (with Outgas)
FDDI Formatter A Off; B Off Standby Mode (with Outgas)
FDDI Port A Off; B Off Standby Mode (with Outgas)
FIFO Memory #1 & #2 Off; #3 & #4 Off Standby Mode (with Outgas)
Format Processor A Off; B Off Standby Mode (with Outgas)
Power Supplies #1 Off, #2 On Standby Mode (with Outgas)
PV VIS FPA A Off; B Off Standby Mode (with Outgas)
PV NIR FPA A Off; B Off Standby Mode (with Outgas)
PV SMIR FPA A Off; B Off Standby Mode (with Outgas)
PV LWIR FPA A Off; B Off Standby Mode (with Outgas)
PC LWIR FPA A Off; B Off Standby Mode (with Outgas)
RC Outgas Heaters All 3 (CS, IS, OS) On Standby Mode (with Outgas)
RC LWIR FPA Heater Off Standby Mode (with Outgas)
RC SMIR FPA Heater Off Standby Mode (with Outgas)
Scan Assembly A Off; B Off Standby Mode (with Outgas)
SDSM Off Standby Mode (with Outgas)
SRCA Off Standby Mode (with Outgas)
PS1 Survival Heaters Enabled Standby Mode (with Outgas)
PS2 Survival Heaters Enabled Standby Mode (with Outgas)
Timing Generator A Off; B Off Standby Mode (with Outgas)
Flight Software Rev BJ Standby Mode (with Outgas)
Inhibit Ids Set None Standby Mode (with Outgas)

This Week's Completed MODIS Activities:

Saturday, May 25, 2002

None

Sunday, May 26, 2002

None

Monday, May 27, 2002

None

Tuesday, May 28, 2002

None

Wednesday, May 29, 2002

2002/149 21:23:26 - 21:26:00 Real-Time Loaded Macro 31. MOD_MEM_PM_LOAD('PM1_MPR_MOD_111_SCIF_TEST',481,'N','DISABLE',1,16)
2002/149 21:26:24 - 21:30:05 Real-Time Dumped Macro 31 Table (not completed due to time constraint. MOD_MEM_DUMP('MACRO_31',481,0,0,1,16)
2002/149 22:51:42 - 22:51:57 Real-Time Halted memory transfer. MOD_MEM_HALT
2002/149 22:52:22 - 22:52:58 Real-Time Dumped last partition of Macro 31. MOD_MEM_PM_DUMP('MACRO_31',481,0,0,16,16)

Thursday, May 30, 2002

None

Friday, May 31, 2002

Thruster Test Maneuvers

2002/151 11:22 HSB and AMSU parked.
2002/151 13:05 Thrusters 1 & 2 fire test..
2002/151 13:58 Thruster 3 fire test.
2002/151 14:42 Thruster 4 fire test.
2002/151 15:31 Thruster 1 fire test.
2002/151 16:10 Thruster 3 fire test.
2002/151 17:01 Thruster 2 fire test.
2002/151 18:44 Thruster 4 fire test.
2002/151 21:10 HSB and AMSU returned to normal scanning.

2002/151 22:03:42 - 22:06:12 Real-Time Moved the SVD to Open (from Outgas) Position. MOD_SVD_TO_OPEN
2002/151 22:25:27 - 22:26:05 Real-Time Dumped the CP Door Position when Trigger Hit Table. MOD_MEM_PM_DUMP('MOTOR_POS_WHEN_HIT', 12, 0, 0, 1, 1)

This Week's Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

The next events in the MODIS activation are:

Moving the SVD from the Outgas to Open position.
Loading the MODIS SCS loads to the ISC.
Turning off the MODIS Outgas Heaters.
Transition MODIS to Science Mode.

The exact dates for the above activities are currently being rescheduled due to schedule shifts from the EPS induced DOY 139 Survival Mode transition.

 

Maneuvers:

The first Delta-V maneuver was successful but less effective than expected. Planning has begun for the next Delta-V.

Current Ascent Plan (as of May 24, 2002):

  • Ascent 1 on May 13, 2002 at 12:14 for 335.000 seconds - Successful
  • Burn #2: June 5th, 2002 at 15:13:00, 1168 second duration
  • Burn #3: June 8th, 2002 at 13:02:00, 793.5 second duration
  • Burn #4: June 10th, 2002 at 12:43:00, 1004 second duration
  • Burn #5: June 13th, 2002 at 13:51:00, 694 second duration
  • Burn #6: June 18th, 2002 at 16:40:00, 755 second duration

MODIS Anomalies:

MOD_SS_CP_LAST_EVENT

Since the second MODIS turn ON activity on DOY 144, there have been 19 pairs of 5D/77 CP event messages received. 5D is the TLM Format/Collect Mismatch message, and 77 is the TLM Late Telemetry Formatting message. SBRS says they have seen these messages during Thermal Vac (around CDH bus activities). The 5D message occurs when something upsets the sector timing or the CP. Since the 5D and 77 are coming together, there may be something going on with the 1553 bus. The events are shortly followed (within 5 seconds) by a telemetry packet with the same MOD_SS_CP1553_MAJCYC value. However, "it appears that the telemetry in said packet is a second reporting of the prior packet, with updates in the one second region. No updates to the data in the 8 and 64 second regions occurred, because the telemetry for that cycle was not sampled (as noted by event 5D)" [-Joe Auchter]. An Aqua Discrepancy Report (ADR) has been submitted to document the situation.

So far, there does not appear to be any recognizable pattern or discernable event that is triggering the CP to generate these event messages. Analysis of telemetry continues.

The last event set occurred at 2002/151-13:55:18.

General Instrument Comments:

MODIS is currently On in B-Side Standby Mode (Power Supply 2, Control Processor B) with the Space View Door at its Open Position. All 3 outgas heaters (Cold Stage, Intermediate Stage, and Outer Stage) are powered and duty cycling nominally.

MODIS Telemetry Trends:

The current MODIS telemetry is consistent with what is expected with MODIS in Standby Mode with Outgassing.

Non-MODIS Significant Events:

Saturday, May 25, 2002

None

Sunday, May 26, 2002

146/00:54 AIRS performs warm function checkout.
146/01:52 AIRS performs VIS/NIR Radiometric test on Lamp 1
146/02:40 AIRS performs VIS/NIR Radiometric test on Lamp 2
146/03:27 AIRS performs VIS/NIR Radiometric test on Lamp 3
CERES performs several calibration activities throughout the day.

Monday, May 27, 2002

CERES continues to perform their calibration activities.
147/15:10 AMSR/e enables their FMU taxi interface (SPS on).

Tuesday, May 28, 2002

148/12:57 CERES performs bi-axial internal calibration.
148/15:53 CERES performs solar calibration.

Wednesday, May 29, 2002

149/12:49 AMSR/e in observation mode.
CERES performs numerous checkouts and calibrations.

Thursday, May 30, 2002

More CERES calibrations and checkouts throughout the day.
150/22:21 AIRS ES deployed.
150/23:15 AIRS Rad calibration on.
150/23:15 AIRS choke heater on.
150/23:40 CERES to standby.

Friday, May 31, 2002

151/11:22 HSB and AMSU parked.
151/13:05 Thrusters 1 & 2 fire test..
151/13:58 Thruster 3 fire test.
151/14:42 Thruster 4 fire test.
151/15:31 Thruster 1 fire test.
151/16:10 Thruster 3 fire test.
151/17:01 Thruster 2 fire test.
151/18:44 Thruster 4 fire test.
151/21:10 HSB and AMSU returned to normal scanning.

The Aqua status can be viewed online at:

http://jupiter02.gsfc.nasa.gov/links/links.htm

Limited Life Item Status:

SRCA 10W Lamp #1: 200.2 of 500 hours
SRCA 10W Lamp #2: 175.7 of 500 hours
SRCA 10W Lamp #3: 178.5 of 500 hours
SRCA 10W Lamp #4: 57.7 of 500 hours

SRCA 1W Lamp #1: 499.5 of 5000 hours
SRCA 1W Lamp #2: 269.8 of 5000 hours

Solar Diffuser Door: 1630 of 3022 Movements
Nadir Aperture Door: 1046 of 1316 Movements
Space View Door: 626 of 1316 Movements

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