NASA-LLIS-0597

Lessons Learned – Monitoring of On-orbit Spacecraft Health and Performance During Early Mission Checkout

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T18:33:53Z
date available	2017-09-04T18:33:53Z
date copyright	07/13/1998
date issued	1998
identifier other	JFCEQCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std;query=author:%22NAVY%20-%206159DD6E273C9FCD0Facil/handle/yse/216068
description abstract	Description of Driving Event: During the critical initial on orbit operations and checkout phase, ground station personnel did not monitor the Lewis spacecraft continuously for anomalies. This was accepted based on a false belief that the spacecraft had a stable safe-mode that it would switch to automatically if anomalies were not immediately corrected. (In the Lewis implementation, the safe-mode was neither stable nor robust.) The situation was further exacerbated by the fact the spacecraft was in an interim (low altitude) orbit which had high drag and short on-station communications intervals and for which the designers had not carried out modeling.
language	English
title	NASA-LLIS-0597	num
title	Lessons Learned – Monitoring of On-orbit Spacecraft Health and Performance During Early Mission Checkout	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1998
contenttype	fulltext
subject keywords	Administration/Organization
subject keywords	Ground Operations
subject keywords	Policy & Planning