NASA-LLIS-0288

Lessons Learned – Galileo Spacecraft Safing During Star Scanner Calibration

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T18:39:45Z
date available	2017-09-04T18:39:45Z
date copyright	07/13/1993
date issued	1993
identifier other	JSZCQCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std;query=autho162sAF679D40AC421854DD6EFDEC9FCD/handle/yse/221423
description abstract	Abstract: An unintended in-flight mode change impacted a planned Galileo sequence only because of a hardware failure during the sequence. The spacecraft entered safing, necessitating a difficult recovery process that could have impacted science return had it happened during encounter. When simulating and testing command sequences, assure that the software and hardware states exactly match the expected in-flight states. Any anomaly that changes a fundamental spacecraft state must be scrutinized for potential impacts.
language	English
title	NASA-LLIS-0288	num
title	Lessons Learned – Galileo Spacecraft Safing During Star Scanner Calibration	en
type	standard
page	3
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1993
contenttype	fulltext
subject keywords	Flight Operations
subject keywords	Spacecraft
subject keywords	Test & Verification