NASA - IMAGE - RPI

RPI Anomalous Events

The following table is a summary of the various RPI anomalous events that have occurred.

21 April 2000 00:36 UT: First sounding at 125m deployment. ~500 mA current into X and Y antennas.
08 May 2000 10:55 UT: Y channel Tx power supply failure
08 May 2000 23:15 UT: Antennas fully deployed
03 October 2000 14:37 UT: X antenna damage, ~130m of -X leg lost
12 December 2000 00:22 UT: V49 software employs new coupler settings for X antenna and disables onboard coordinate transformations
18 September 2001 07:52 UT: +Y antenna damage, [small part <50 m, possibly tip mass only]
13 October 2001 04:42 UT: Corrupted data for 106 hours due to an unknown memory problem (cured by the system reset)
13 October 2001 04:42 UT: -Y antenna damage of unknown severity
09 October 2002 14:20 UT: System brownout for 41 days due to memory corruption
24 February 2003 22:17 UT: Software fuse tripped
22 March 2003 12:44 UT: -X antenna is out of tuning, possibly due to relay malfunction
24 August 2004 06:41 UT: Corrupted data for 8 days until 01 September 10:00 UT due to an unknown memory problem (cured by the system reset)
30 September 2004 13:21 UT: +Y antenna damage, the rest of +Y antenna is likely to be gone
21 January 2005 07:29 UT: No science data for 6 days until 27 January 13:48 UT due to an unknown memory problem (cured by the system reset). RPI was making only HK packets (60,000 a day).