Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/ops/swat/safing/11270/intercept_complete.txt Дата изменения: Wed Sep 28 18:17:02 2011 Дата индексирования: Sun Mar 2 06:12:19 2014 Кодировка: Поисковые слова: cygnus loop

From: "Swain, Scott"
Date: September 28, 2011 7:00:16 AM EDT
Subject: SCI: *FLASH* NSSC-1 SMS Intercept Complete

Following the recovery from the CU/SDF lock-up event of DOY 2011/270, the NSSC-1 intercept of the cold start SMS returning the Payload to nominal science operations has been successfully completed.

In preparation for this, the N02 NSSC-1 load and ATP setting were completed at 270/23:38 UTC via OR 19146-3, corresponding to an SMS intercept time of 271/10:10:56 UTC. The first NSSC-1 QBF load of the N03/B92 SPC load under nominal ACE control was then monitored after establishing the forward link at 271/00:37 UTC. The results of the SMS intercept were not immediately visible in RT telemetry, however, until AOS at 271/10:54 UTC, where successful intercept was verified.

Also completed in preparation for intercept was the setting of the NICMOS safing bit in the NSSC-1 via OR 19146-3 at 270/23:40 UTC. This will prevent incidental execution of the NICMOS safing sequence while NICMOS remains in Safe, ensuring the TECs are not re-enabled. OR 19147-1 was completed at 270/23:25 UTC, successfully disabling the SDF Input section as per our nominal configuration following the SDF power/thermal mitigation implementation.

Again, many thanks to all those who contributed to the successful return to science operations following the Lock-up.

If you have any questions or concerns, please feel free to contact me.

__________________________________________
Scott Swain
HST Scientific Instruments Systems Engineering
Lockheed Martin Mission Services