Mission Operations Days: 2004/304 to 2004/310
October 30, 2004 00:00:00 GMT to November 05, 2004 00:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
| AM-1 "Terra" is in Normal Mode PFM MODIS is in A-Side Nominal Science Mode (Cross Strapped with FR B) |
||
|---|---|---|
| Component | State(s) | Comment |
| Blackbody | A On (290K); B Off | Nominal Science Mode |
| Calibration Electronics | A On; B Off | Nominal Science Mode |
| Control Processor | A On; B Off | Nominal Science Mode |
| Nadir Door | Unlatched, Open | Nominal Science Mode |
| Space View Door | Unlatched, Open | Nominal Science Mode |
| Solar Diffuser Door | Unlatched, Screened | Permanent Configuration |
| FDDI Formatter | A On; B Off | Nominal Science Mode |
| FDDI Port | A On; B Off | Nominal Science Mode |
| FIFO Memory | #1 & #2 On; #3 & #4 Off | Nominal Science Mode |
| Format Processor | A Off; B On | Nominal Science Mode |
| Power Supplies | #1 On, #2 Off | Nominal Science Mode |
| PV VIS FPA | A On; B Off | Nominal Science Mode |
| PV NIR FPA | A On; B Off | Nominal Science Mode |
| PV SMIR FPA | A On; B Off | Nominal Science Mode |
| PV LWIR FPA | A On; B Off | Nominal Science Mode |
| PC LWIR FPA | A On; B Off | Nominal Science Mode |
| RC Outgas Heaters | All 3 (CS, IS, OS) Off | Nominal Science Mode |
| RC LWIR FPA Heater | On (83K) | Nominal Science Mode |
| RC SMIR FPA Heater | Off | Nominal Science Mode |
| Scan Assembly | A On; B Off | Nominal Science Mode |
| SDSM | Off | Nominal Science Mode |
| SRCA | Off | Nominal Science Mode |
| PS1 Survival Heater | Enabled | Nominal Science Mode |
| PS2 Survival Heater | Enabled | Nominal Science Mode |
| Timing Generator | A On; B Off | Nominal Science Mode |
| Flight Software | Rev BD + 11 sets of patches
|
Nominal Science Mode |
| Inhibit Ids Set | none | Nominal Science Mode |
| TMON 66 | Disabled | Nominal Science Mode |
| TMON 67 | Disabled | Nominal Science Mode |
| TMON 68 | Enabled | Nominal Science Mode |
| TMON 69 | Disabled | Nominal Science Mode |
This Week’s Completed MODIS Activities:
Saturday, October 30, 2004
None
Sunday, October 31, 2004
None
Monday, November 1, 2004
None
Tuesday, November 2, 2004
Lunar Roll Maneuver (-14.1615 deg roll)
2004/306 23:44:52 ATC MOD_OA03_FR_NIGHT_RATE (03:23 early)
2004/307 00:22:14-00:29:00 ATC MOD_OA08_ROLL_MAN
2004/307 00:41:04-01:27:09 ATC MOD_OA03_FR_DAY_RATE (03:23 late)
Wednesday, November 3, 2004
None
Thursday, November 4, 2004
None
Friday, November 5, 2004
2004/310 01:45:00-01:45:31 ATC MOD_SRCA_14_6_4_1_SETUP.1 Turns on the SRCA and sets it's lamp config. to use 10W lamp #2
2004/310 01:50:09-03:54:57 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2 Performs SRCA 10W continuous radiometric activity
Data collect from 02:06:03-03:54:57
2004/310 08:35:00-08:35:31 ATC MOD_SRCA_14_6_4_1_SETUP.1 Turns on the SRCA and sets it's lamp config. to use 10W lamp #2
2004/310 08:40:06-10:31:32 ATC MOD_SRCA_SPECIAL_10WND.1 Performs SRCA 10W continuous radiometric activity with the neutral density filter in place
Data collect from 08:41:10-10:31:32
2004/310 14:55:00-14:55:31 ATC MOD_SRCA_14_6_4_1_SETUP.1 Turns on the SRCA and sets it’s lamp config. to use 1W lamp #2 (backup)
2004/310 15:01:16-17:06:04 ATC MOD_OA21_SRCA_1W_RAD_A.5 Performs SRCA 1W continuous radiometric activity
Data collect from 15:17:10-17:06:04
This Week’s Scheduled MODIS Activities Not Completed:
Thursday, November 4, 2004
For Terra inclination adjust maneuver #12:
2004/309 15:06:08-15:07:49 ATC MOD_CLOSE_NAD_SVD.1
(100 seconds prior to S/C day, orbit 25968)
Upcoming MODIS Events:
Calibrations for November will include biweekly SDSM, monthly SRCA Full and 10W Radiometric, and bimonthly SRCA Full Spatial calibrations.
Maneuvers:
The Terra FOT has successfully performed 3 Inclination Adjust Maneuvers (IAMs), 2004/300, 2004/302, and 2004/309.
MODIS Anomalies:
MODIS NAD (Nadir Aperture Door) Anomaly:
Telemetry still indicates that the “NAD Open” (MOD_CR_DR_NAD_OPEN) trigger is set to the “NOT_OPEN” position; however, science data has shown that the NAD is open. The NAD OPEN trigger may yet “pop” to OPEN due to thermal cycling on the trigger, as was seen on 2002/079.
General Instrument Comments:
MODIS is in Science Mode, using all A-side components, but cross-strapped to Formatter B, with the blackbody maintained at 290K and the Solar Diffuser Door at the Screened position.
MODIS Telemetry Trends:
Nominal telemetry trending is ongoing.
Non-MODIS Significant Events:
Terra Solid State Recorder Anomaly
Overview:
The SSR Anomaly is still under investigation. MODIS currently is operating with 34 Supersets allotted for its buffer. There are plans in the works for possibly power cycling the SSR to get back PWA’s that are in the Bad List, but no date has yet been set. There are no current plans for a change in science data capture rates. For details, see previous report am1weekly_2003-305_2003-311.doc. The Terra FOT is currently evaluating plans to perform a power recycling of the SSR in an attempt to regain functionality of the “bad” PWAs. This activity will be performed at a time when it is least detrimental to critical science data.
The EMOS mission status webpage (which includes instrument data loss records) can be found at the following URL. Note that a password is now required to access the EOS mission links web pages. There are directions at the URL below for how to obtain a username/password.
http://jupiter02.gsfc.nasa.gov/links/links.htm
Limited Life Item Status:
SRCA 10W Lamp #1: 237.4 of 500 hours
SRCA 10W Lamp #2: 172.4 of 500 hours
SRCA 10W Lamp #3: 182.1 of 500 hours
SRCA 10W Lamp #4: 66.7 of 500 hours
SRCA 1W Lamp #1: 566.9 of 4000 hours
SRCA 1W Lamp #2: 278.7 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 538 of 1316 Movements
Space View Door: 441 of 1316 Movements