NOAA Office of Satellite and Product Operations

NOAA 11 EPS Subsystem Summary

Component Description Status
ADESolar Array Drive ElectronicsGreen
BAT 1Battery # 1Green
BAT 2Battery # 2Green
BAT 3Battery # 3Green
BRU 1Battery Reconditioning Unit 1Green
BRU 2Battery Reconditioning Unit 2Green
BRU 3Battery Reconditioning Unit 3Green
PSEPower Supply ElectronicsGreen
SASolar ArrayGreen
SADSolar Array DriveGreen
SATCUSolar Array Telemetry Commutator UnitGreen
SHUNT ASolar Array Shunt Drive AGreen
SHUNT BSolar Array Shunt Drive BGreen

Subsystem History:

Date Time Component Description
06/16/200416:24:28 N11 Decomissioned. Power depleted, batteries disconnected, transmitters turned off, CPU POP'd.
04/19/200412:00:00SASolar eclipse intermittently for 4 hours between 11:00 and 15:00 No reconfigurations required, Spacecraft remained nominal throughout.
11/24/200303:00:00BAT 1Command all 3 batteries to Low Rate charge. Solar eclipse event ended.
11/23/200322:51:00SASolar eclipse for 20 minutes. 91% was maximum percent shading on solar array. Spacecraft remained nominal.
11/23/200321:35:00BAT 1Battery 1 & 2 to Medium Rate charge, maintain battery 3 at Low Rate. Prep for solar eclipse.
06/02/200315:40:00BAT 1Command battery 1 2 and 3 to low rate charge.
05/29/200319:54:00BAT 1Command battery 1 & 2 to medium rate charge and battery 3 to low rate charge
04/16/200314:50:00BAT 1Command battery 1 to LRC.
04/16/200314:50:00BAT 2Command battery 2 to LRC.
06/19/200215:10:00SAModified solar array offset from -45 degrees to -30 degrees.
06/11/200202:00:00 Solar ecplise event.
06/26/200114:45:00BAT 3Changed VT limit to 8/11.
06/19/200114:45:00BAT 1Changed charge current from low rate to medium rate.
06/19/200114:45:00BAT 1Changed VT limit to 6/8.
06/19/200114:45:00BAT 2Changed charge current fromlow rate to medium rate.
06/19/200114:45:00BAT 3Changed charge current from low rate to medium rate.
09/24/198810:36:00BAT 1On Orbit
09/24/198810:36:00BAT 2On Orbit
09/24/198810:36:00BAT 3On Orbit
09/24/198810:36:00BRU 1On Orbit
09/24/198810:36:00BRU 2On Orbit
09/24/198810:36:00BRU 3On Orbit
09/24/198810:36:00SHUNT AOn Orbit
09/24/198810:36:00SHUNT BOn Orbit
09/24/198810:36:00SAOn Orbit
09/24/198810:36:00SADOn Orbit
09/24/198810:36:00PSEOn Orbit
09/24/198810:36:00ADEOn Orbit
09/24/198810:36:00SATCUOn Orbit