NASA-LLIS-0206

Lessons Learned - Inertial Upper Stage (IUS) Propellant Tank Assemblies (PTA's)

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T15:33:15Z
date available	2017-09-04T15:33:15Z
date copyright	1992.11.12
date issued	1992
identifier other	OIZCQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/34836
description abstract	Description of Driving Event: Inertial Upper Stage/Tracking and Data Relay Satellite (IUS/TDRS) instrumentation design allows active monitoring of only one of two Propellant Tank Assemblies (PTA\'s) during the countdown phase. The PTA\'s are isolated from each other until activated after IUS deployment. Therefore, the status of all PTA\'s can not be determined by monitoring one PTA. Pre-launch preparation procedures permit adequate determination of pre-flight PTA leakage status; pyrotechnic system design adequately protects against inadvertently commanded loss of PTA isolation; and structural design safety factors are adequate. However, no indicator is available to detect a flight-induced anomaly, thereby making the IUS status uncertain.
language	English
title	NASA-LLIS-0206	num
title	Lessons Learned - Inertial Upper Stage (IUS) Propellant Tank Assemblies (PTA's)	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1992
contenttype	fulltext
subject keywords	Energetic Materials - Explosive/Propellant/Pyrotechnic